US3928881A - Method and mould for the manufacture of a plastic sole for shoes - Google Patents

Method and mould for the manufacture of a plastic sole for shoes Download PDF

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US3928881A
US3928881A US485815A US48581574A US3928881A US 3928881 A US3928881 A US 3928881A US 485815 A US485815 A US 485815A US 48581574 A US48581574 A US 48581574A US 3928881 A US3928881 A US 3928881A
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gripper elements
gripper
sole
elements
outsole
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US485815A
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Alfred Bente
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Adidas AG
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Dassler Adolf
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Priority claimed from DE2338942A external-priority patent/DE2338942B1/en
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Assigned to ADIDAS SPORTSCHUHFABRIKEN ADI DASSLER KG, A LIMITED PARTNERSHIP OF GERMANY reassignment ADIDAS SPORTSCHUHFABRIKEN ADI DASSLER KG, A LIMITED PARTNERSHIP OF GERMANY ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: BAENKLER, BRIGITTE, BENTE, INGE, DASSLER, HORST, DASSLER-MALMS, SIGRID, BY ALBERT HENKEL, LAWYER, ESSING, KARIN
Assigned to HENKEL, ALBERT DR. KONIGSALLEE 36 IN 4000 DUSSELDORF 1, ATTORNEY IN FACT reassignment HENKEL, ALBERT DR. KONIGSALLEE 36 IN 4000 DUSSELDORF 1, ATTORNEY IN FACT APPOINTMENT OF ATTORNEY IN FACT Assignors: BAENKLER, BRIGITTE, BENTE, INGE, DASSLER, HORST, DASSLER-MALMS, SIGRID, ESSING, KARIN
Assigned to ESSING, KARIN (1/5), BENTE, INGE (1/5), DASSLER-MALMS, SIGRID (1/5), DASSLER, HOST (1/5), BAENKLER, BRIGITTE (1/5) reassignment ESSING, KARIN (1/5) CERTIFICATE OF INHERITENCE Assignors: DASSLER, ADOLF
Assigned to ADIDAS SPORTSCHUHFABRIKEN ADI DASSLER STIFTUNG AND CO. KG. reassignment ADIDAS SPORTSCHUHFABRIKEN ADI DASSLER STIFTUNG AND CO. KG. CHANGE OF ADDRESS. (IN GERMAN WITH ENGLISH TRANSLATION). Assignors: ADIDAS SPORTSCHUHFABRIKEN ADI DASSLER KG., AM BAHNHOF, HERZOENAURACH, GERMANY D8522
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29DPRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D35/00Producing footwear
    • B29D35/06Producing footwear having soles or heels formed and joined on to preformed uppers using a moulding technique, e.g. by injection moulding, pressing and vulcanising
    • B29D35/061Producing footwear having soles or heels formed and joined on to preformed uppers using a moulding technique, e.g. by injection moulding, pressing and vulcanising by injection moulding
    • AHUMAN NECESSITIES
    • A43FOOTWEAR
    • A43BCHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B13/00Soles; Sole-and-heel integral units
    • A43B13/14Soles; Sole-and-heel integral units characterised by the constructive form
    • A43B13/22Soles made slip-preventing or wear-resisting, e.g. by impregnation or spreading a wear-resisting layer
    • A43B13/24Soles made slip-preventing or wear-resisting, e.g. by impregnation or spreading a wear-resisting layer by use of insertions
    • A43B13/26Soles made slip-preventing or wear-resisting, e.g. by impregnation or spreading a wear-resisting layer by use of insertions projecting beyond the sole surface
    • AHUMAN NECESSITIES
    • A43FOOTWEAR
    • A43CFASTENINGS OR ATTACHMENTS OF FOOTWEAR; LACES IN GENERAL
    • A43C15/00Non-skid devices or attachments
    • A43C15/16Studs or cleats for football or like boots
    • A43C15/161Studs or cleats for football or like boots characterised by the attachment to the sole

Definitions

  • the present invention relates to a method for the manufacture of a plastic sole for shoes, especially sports shoes, with exchangeable screw-on gripper elements, by moulding.
  • the invention further relates to a mould for carrying out this method and to gripper elements for use in the method.
  • a method for the manufacture of a plastics material outsole for shoes, especially sports shoes, with exchangeable gripper elements having screw-threaded exten sions comprising locating the screwthreaded gripper elements in a mould, and thereafter introducing plastic material directly round the screwthreaded extensions to mould the sole.
  • the invention thus dispenses with metal inserts in the sole and in the gripper elements and also with large projections on the sole, from which the gripper elements extend.
  • the gripper elements and the plastic sole are preferably manufactured of different materials, in such a way that the material of the gripper-elements is not impaired at the temperatures at which the sole is cast and also does not bond to the material of the sole.
  • the sole consists, as hitherto, of an elastic plastic, for example nylon, whilst the gripper elements are manufactured from styrene or the like.
  • a particularly advantageous embodiment furthermore provides that the gripper elements have a recess in their support face, by which they rest against the underside of the sole and transfer the stud or spike pressure, and that the gripper elements are located with this support face either flush with, or projecting from, the corresponding surface of the mould cavity.
  • the gripper elements Before introduction into the mould, the gripper elements can be treated with a release agent, which further improves their detachability from the sole.
  • a particularly advantageous embodiment of the method furthermore provides that as is already in itself known the plastic sole is moulded directly onto the readylasted upper, so that after the moulding method a finished complete shoe is obtained. This results in a substantial simplification of the production since the gripper elements no longer have to be screwed into the soles in a separate working step, and results in a corresponding saving in machinery.
  • a particular advantage of the method according to the invention is that gripper elements which must occupy a certain orientation or angular position relative to the longitudinal direction of the sole, as in the case, for example, with the ridge-like or pyramidal gripper elements of track shoes, can very simply be fixed to the outsole in this orientation of the elements. It only requires the gripper elements to be located appropriately in the mould whereas hitherto the position of the threads, both in the sole and in the gripper element, had to be matched very accurately to one another, or compensation by corresponding spacers was necessary.
  • the method of the present invention is of particular importance because in football, in recent years, a noticeable transition from the previous relatively hard plastic outsole to a soft outsole has been noticeable and as a result it has been necessary to resort increasingly to moulding-in of holder inserts since the softer plastic material does not possess sufficient strength for holding 3 screw-type gripper elements securely.
  • the mold for carrying out themethod according to the invention differs from the known molds only in that recesses 'for receiving the gripper elements are provided in the face of the mold cavity which forms the undersideof the sole. Hence, it is possible to adapt any known mold to the method according to the invention, without a substantial increase in cost. At the same time it is possible to matchthe recessesto the maximum size of gripper elements whichoccurs. and then to hold smaller gripper elements by means of separately inserting support rings. Thesesupport rings are at the same time intended to fulfil a certain sealing. function to prevent thefluid plastic material of the sole from entering the recesses. a
  • FIG. 1 is a schematic section, in the longitudinal direction of the sole, through the lower part of a mold according to the invention, with a shoe mounted thereon, and further shows, for simplicity, two different embodiments of gripper-elements on one sole;
  • FIG.. 2. is a side elevation of a holder insert made of plastic, into which afootball boot stud has already been screwed and which can be embedded by molding, by the-method according to the invention, in the outsole of a football boot;
  • FIG. 2 ,FlGS.. 2 a and 2b are plan. views of different embodiments of .the plastic holder inserts accordingto FIG. 2; andi ,FIG. 3 shows, a further modified embodiment of a plastic holder insert according to FIG. 2, constructed to receive. two gripper elements.
  • FIG. 1 is asection, in the longitudinal direction of the sole, through the lower part of a mould 1, on which aready-lasted upper 2 of a football boot is mounted,.i n.such a way as to create a mould cavity 3 which corresponds precisely tothe dimensions of the outsole which is to be attached by injection moulding to the upper 2.
  • the drawing shows a-situation in which plastic material, for examplenylon, has already been injected into the mould cavity 3 and forms the outsole.
  • the lower, part 1 of the mould has, in its base, which defines themould cavity 3 and moulds the undersideof the outsole, recesses 4, 5 which serve to receive studs 6, 7, I
  • the recesses 4, 5 and the studs 6, 7 inserted therein are of. two different embodiments.
  • Thestud 6, shown on. the left 'of the drawing, has in its part which projects from the sole, the customary slightly concavely-domed truncated cone shape of the known football studs.
  • the recess 4 matches the outer face of the stud 6 precisely, so that the support face 8 of this stud lies face in order to exert a good sealing. effect to preven the entry of plastic material into the recess 5.
  • the stud 7 is so located in the support ring 11, that is to say theinternal diameter of the support ring 11 is I such, that the support face 8' is not flush with the-base" flush with the base surface of the lower part 1 of the surface of the lower .part 1 of the mould but instead is about 0.5 mm above it.
  • the support face 8 can also be] providedwith a circular groove 10.
  • the outer edge of the support "face 8 is cylindrical at least to a height which corresponds to the amount by which the support face'8' lies above thebase surface of the lower part 'of the mould.
  • FIG. 2 shows a holder insert 21 into which a football stud 22 has been screwed.
  • these two parts are inserted into a recess of a mould a which is not shown in such a way that the edge 23 of the stud 22 is flush with the edge ofthe recess. If now fluid plastic material is forced into the mould,'the mate-' rial flows into all the interspaces between the holder insert 21 and the stud 22 and fills-these.
  • the holder insert is embedded in, and
  • FIGS. 2a and 2b show plan views of different embodi ments of the holder insert 21 shown in FIG. 2,
  • the notches 24 or perforations 25 provided respectively at the 'edge or in the edge 'zone serve to permit the plastic material to flow more easily through to the other side of the holder insert, sothat the latter is firmlyenclosed by plastic material.
  • the holder inserts according to FIGS. 2d and 2b are preferablyso arranged in the outsole, that their longitudinal direction matches the main direction of stress of the particulargripper element. This produces a longer lever arm which effects a more uniform distribution of forces.
  • the holder insert 26 according to FIG, 3 isconstructed to receive two gripper elements andextends in the finished outsole transversely to the longitudinal direction of the outsole.
  • This design it is directly possible, if desired, to locate the holder insert at an angle to the outsole, that is to say to locate it in such a way that it is more deeply embedded in the sole in the region of one gripper element than in the region of the other gripper element.
  • the holder-inserts shown in the drawings consist of plastic, preferably of a hard grade of nylon or of PVC.
  • plastic holder inserts, a soft transition from the softer areas'of the sole to the areas in which the holder inserts are located is achieved, so that painful pressure points can be'avoided.
  • This can alsobe controlled additionally by giving theholder inserts an asymmetrical shape relative to thefixing position of the gripper elements. This asymmetricalshape can also be selected in relation to the principal stresses on the particular gripper element-which is to be held..
  • studs 6 or 7 are inserted in the recesses 4 or 5 of the lower part 1 of the mould.
  • the studs 6, 7 can first be treated with release agent at their threaded extensions 9.
  • a ready-lasted shoe upper is mounted on the mould so that the insole rests against the free end faces of the threaded extensions 9.
  • Fluid plastic material is then injected into the mould cavity 3 thus formed.
  • the plastic material flows round the threaded extensions 9 and in the case of the stud 7 also round the cylindrical part of the outer surface of the stud.
  • the material penetrates into the circular groove 10 and fills the latter.
  • a method for the manufacture of a plastic material outsole for shoes, especially sports shoes, with exchangeable screw-in gripper elements, having screwthreaded extensions comprising the steps of locating the screw-threaded gripper elements in a mold cavity and thereafter introducing plastic material directly round the screwt hreaded extensions.
  • each gripper element has a support face and a recess in each support face from which the screw-threaded extension projects and is located with this support face flush with the corresponding face of the mold cavity.
  • each gripper element has a support face and is located with its support face projecting a relatively small distance from the corresponding face of the mold cavity.

Abstract

A method for the manufacture, by molding of a plastics sole with exchangeable gripper elements, for sports shoes, in which the gripper elements are so located in recesses of the mold, before introducing the fluid plastic material into the mold, that plastic material is cast directly round the threaded extensions of the gripper elements or round holder inserts into which the gripper elements have already been screwed. This saves the subsequent screwing-in of the gripper elements or the provision of additional holder elements for the holder inserts. In addition, a sports shoe with a plastic outsole and gripper elements is disclosed, the outsole of which has annular projections which project into annular grooves on the support face of the gripper element which faces the outsole. This makes it possible to lengthen the thread and hold the gripper element more securely without causing additional weight.

Description

United States Patent 1 Bente Dec. 30, 1975 METHOD AND MOULD FOR THE MANUFACTURE OF A PLASTIC SOLE FOR SHOES [75] Inventor: Alfred Bente,l-lerzogenaurach,
21 Appl. No.2 485,815
[30] Foreign Application Priority Data 5/1973 Granger 136/59 R 3,846,921 11/1974 Kobayashi 36/59 R Primary ExaminerPatrick D. Lawson [57] 9 ABSTRACT A method for the manufacture, by molding of a plastics sole with exchangeable gripper elements, for sports shoes, in which the gripper elements are so located in recesses of the mold, before introducing the fluid plastic material into the mold, that plastic material is cast directly round thethreaded extensions of the gripper elements or round holder inserts into Aug. 1, 1973 Germany 2338942 which the gripper elements have already been Feb. 21, 1974 Germany 2408444 5crewed This aves the ubsequent screwing-in Qf the gripper elements or the provision of additional holder U-S. D elements for the holder inserts In a Sports [5 Flt- Cl. Shoe a plastic outsole and gripper elements is dis- Fleld 0f 59 67 closed, the outsole of which has annular projections 12/142 R which project into annular grooves on the support face of the gripper element which faces the outsole. [56] References Clted This makes it possible to lengthen the thread and hold UNITED STATES PATENTS the gripper element more securely without causing ad- 3,040,450 6/1962 Phillips 36/25 1-1 ditlonal weight- 3,l33,363 5/1964 Phillips..... 36/67 D 3,597,863 8/1971 Austin 36/59 R 6 Clams 5 mafwmg guns US. Patent Dec. 30, 1975 Fig.1
Fig.2c1 Fig. 2b
Fig.2
1 METHOD AND MOULD FOR THE MANUFACTURE OF A PLASTIC SOLE FOR SHOES The present invention relates to a method for the manufacture of a plastic sole for shoes, especially sports shoes, with exchangeable screw-on gripper elements, by moulding. The invention further relates to a mould for carrying out this method and to gripper elements for use in the method.
. It has been knownfor a considerable time to manufacture plastic outsoles of sportsshoes, especially of football boots and trackshoes, by moulding, wherein, preferably, the soles are moulded directly onto the ready-lasted shoe upper. In order to hold exchangeable gripper elements which themselves consist of plastic, for example the studs of football boots, metal holding inserts, in the form of threaded sleeves with adjoining projections, are moulded directly into the plastic outsoles and the gripper elements (studs) are provided with corresponding metal screw inserts. The metal inserts in the sole and in the gripper elements ensure the requisite hold and at the same time the requisite resistance to breaking-off or shearing-off when the sports shoes are used.
However, the provision of the holding inserts in the sole and in the gripper elements themselves not only increases the cost of manufacture of the known shoe soles but also their weight. In addition, it was always necessary to take special precautions to locate the holding'inserts in the mould in such a way that the inserts occupy the desiredposition in the finished plastic sole.
Sports shoes with plastic outsoles have also already been proposed in which gripper elements of plastic are fixed without any metal inserts. However, with these outsoles, projections to which the gripper elements are fixed must be provided at the fixing position of the gripper elements, in order to provide a greater length of thread and take account of the lower strength of the plastic thread. This causes an undesirable stiffening of the sole and increasedweight.
According to the invention there is provided a method for the manufacture of a plastics material outsole for shoes, especially sports shoes, with exchangeable gripper elements having screw-threaded exten sions, said method comprising locating the screwthreaded gripper elements in a mould, and thereafter introducing plastic material directly round the screwthreaded extensions to mould the sole.
The invention thus dispenses with metal inserts in the sole and in the gripper elements and also with large projections on the sole, from which the gripper elements extend. This leads due to the omission of the metal or additional plastic to a not inconsiderable saving in weight, which can be of the order of magnitude of 30 to 40 g, depending on the number of gripper elements. The gripper elements and the plastic sole are preferably manufactured of different materials, in such a way that the material of the gripper-elements is not impaired at the temperatures at which the sole is cast and also does not bond to the material of the sole. Suitably, the sole consists, as hitherto, of an elastic plastic, for example nylon, whilst the gripper elements are manufactured from styrene or the like.
As a result of suitably choosing the material of the sole and of the gripper elements, the exchangeability of the gripper elements is in no way impaired, in spite of direct moulding round the threadedxextensions, be-
cause a bond is not formed between the two materials. The gripper elements can accordingly, just as before, be unscrewed, by means of tools, from the sole after the sole has been moulded round them, and be replaced by other elements. The strength also does not suffer since the threaded plastic extensions can be made of substantially greater diameter than hitherto without misgivings as to a possible increase in weight. This has been avoided in the case of metallic threaded inserts in order to keep the weight as low as possible. A particularly advantageous embodiment furthermore provides that the gripper elements have a recess in their support face, by which they rest against the underside of the sole and transfer the stud or spike pressure, and that the gripper elements are located with this support face either flush with, or projecting from, the corresponding surface of the mould cavity. This produces a corresponding ringshaped shoulder on the outsole within and/or around the periphery of the support face of the gripper element, which can transfer very substantial shear forces. Furthermore, this increases the thread length without having to tolerate additional weight in the form of pro jections, since the ring-shaped shoulder is accommodated in the interior of the gripper element itself.
Before introduction into the mould, the gripper elements can be treated with a release agent, which further improves their detachability from the sole. A particularly advantageous embodiment of the method furthermore provides that as is already in itself known the plastic sole is moulded directly onto the readylasted upper, so that after the moulding method a finished complete shoe is obtained. This results in a substantial simplification of the production since the gripper elements no longer have to be screwed into the soles in a separate working step, and results in a corresponding saving in machinery.
A particular advantage of the method according to the invention is that gripper elements which must occupy a certain orientation or angular position relative to the longitudinal direction of the sole, as in the case, for example, with the ridge-like or pyramidal gripper elements of track shoes, can very simply be fixed to the outsole in this orientation of the elements. It only requires the gripper elements to be located appropriately in the mould whereas hitherto the position of the threads, both in the sole and in the gripper element, had to be matched very accurately to one another, or compensation by corresponding spacers was necessary.
When using plastic holder inserts, special measures to support the holder inserts in the mould are no longer required because the gripper elements themselves, which remain in the finished moulded outsole, serve as a support for the holder inserts. The gripper elements, for example football-studs, which are screwed into the holder inserts, merely have to be inserted in recesses provided in the mould, without requiring special setting work and additional removal of supports. It is a particular advantage here that the position of the holder inserts in the plastic sole which is to be manufactured can be determined by screwing the gripper elements more or less deeply into the holder inserts.
The method of the present invention is of particular importance because in football, in recent years, a noticeable transition from the previous relatively hard plastic outsole to a soft outsole has been noticeable and as a result it has been necessary to resort increasingly to moulding-in of holder inserts since the softer plastic material does not possess sufficient strength for holding 3 screw-type gripper elements securely. I
The mold for carrying out themethod according to the inventiondiffers from the known molds only in that recesses 'for receiving the gripper elements are provided in the face of the mold cavity which forms the undersideof the sole. Hence, it is possible to adapt any known mold to the method according to the invention, without a substantial increase in cost. At the same time it is possible to matchthe recessesto the maximum size of gripper elements whichoccurs. and then to hold smaller gripper elements by means of separately inserting support rings. Thesesupport rings are at the same time intended to fulfil a certain sealing. function to prevent thefluid plastic material of the sole from entering the recesses. a
In order that the invention is more fully understood, the following description is given merely byway of example, reference being made to the accompanying drawings, in which: 1 l
FIG. 1 is a schematic section, in the longitudinal direction of the sole, through the lower part of a mold according to the invention, with a shoe mounted thereon, and further shows, for simplicity, two different embodiments of gripper-elements on one sole; FIG.. 2.is a side elevation of a holder insert made of plastic, into which afootball boot stud has already been screwed and which can be embedded by molding, by the-method according to the invention, in the outsole of a football boot;
,FlGS.. 2 a and 2b are plan. views of different embodiments of .the plastic holder inserts accordingto FIG. 2; andi ,FIG. 3 shows, a further modified embodiment of a plastic holder insert according to FIG. 2, constructed to receive. two gripper elements.
As indicated, FIG. 1 is asection, in the longitudinal direction of the sole, through the lower part of a mould 1, on which aready-lasted upper 2 of a football boot is mounted,.i n.such a way as to createa mould cavity 3 which corresponds precisely tothe dimensions of the outsole which is to be attached by injection moulding to the upper 2..The drawing shows a-situation in which plastic material, for examplenylon, has already been injected into the mould cavity 3 and forms the outsole. The lower, part 1 of the mould has, in its base, which defines themould cavity 3 and moulds the undersideof the outsole, recesses 4, 5 which serve to receive studs 6, 7, I
The recesses 4, 5 and the studs 6, 7 inserted therein are of. two different embodiments. .Thestud 6, shown on. the left 'of the drawing, has in its part which projects from the sole, the customary slightly concavely-domed truncated cone shape of the known football studs. From its support face 8, by which it rests against the underside of the outsole, protrudes an integrally moulded threaded extension 9, which projects beyond the support face 8 by an amount precisely equal to the thickness of the sole and hence comes to rest,.when the mould is closed, against the insole, which is not shown, of the shoe upper 2.-- T he supportface 8 has a circular groove 10, extending directly from the threaded extension 9, and the radially, outer flank of this groove is conical.
The recess 4 matches the outer face of the stud 6 precisely, so that the support face 8 of this stud lies face in order to exert a good sealing. effect to preven the entry of plastic material into the recess 5. The stud 7 is so located in the support ring 11, that is to say theinternal diameter of the support ring 11 is I such, that the support face 8' is not flush with the-base" flush with the base surface of the lower part 1 of the surface of the lower .part 1 of the mould but instead is about 0.5 mm above it. The support face 8 can also be] providedwith a circular groove 10. The outer edge of the support "face 8 is cylindrical at least to a height which corresponds to the amount by which the support face'8' lies above thebase surface of the lower part 'of the mould.
FIG. 2 shows a holder insert 21 into which a football stud 22 has been screwed. In the arrangement shown, these two parts are inserted into a recess of a mould a which is not shown in such a way that the edge 23 of the stud 22 is flush with the edge ofthe recess. If now fluid plastic material is forced into the mould,'the mate-' rial flows into all the interspaces between the holder insert 21 and the stud 22 and fills-these. Hence,in the finished outsole, the holder insert is embedded in, and
fixed by, plastic materiaL-The location of the holder inserts 21 in the mould provesvery simple because the height position relative to the stud 22 is fixed by first screwing in the stud and all that is necessary beforethe moulding is to insert the stud 22 in the desired position of the holder insert 21 into the recess provided the mould. On the other hand, special setting in respect of height is no longer necessary.
FIGS. 2a and 2b show plan views of different embodi ments of the holder insert 21 shown in FIG. 2, The notches 24 or perforations 25 provided respectively at the 'edge or in the edge 'zone serve to permit the plastic material to flow more easily through to the other side of the holder insert, sothat the latter is firmlyenclosed by plastic material. The holder inserts according to FIGS. 2d and 2b are preferablyso arranged in the outsole, that their longitudinal direction matches the main direction of stress of the particulargripper element. This produces a longer lever arm which effects a more uniform distribution of forces.
The holder insert 26 according to FIG, 3 isconstructed to receive two gripper elements andextends in the finished outsole transversely to the longitudinal direction of the outsole. With this design it is directly possible, if desired, to locate the holder insert at an angle to the outsole, that is to say to locate it in such a way that it is more deeply embedded in the sole in the region of one gripper element than in the region of the other gripper element. g
The holder-inserts shown in the drawings consist of plastic, preferably of a hard grade of nylon or of PVC. When using plastic holder: inserts, a soft transition from the softer areas'of the sole to the areas in which the holder inserts are located is achieved, so that painful pressure points can be'avoided. This can alsobe controlled additionally by giving theholder inserts an asymmetrical shape relative to thefixing position of the gripper elements. This asymmetricalshape can also be selected in relation to the principal stresses on the particular gripper element-which is to be held..
The method according to the invention, in accordance with FIG. 1, is carried out as follows:
First, studs 6 or 7 are inserted in the recesses 4 or 5 of the lower part 1 of the mould. The studs 6, 7 can first be treated with release agent at their threaded extensions 9. Thereafter, a ready-lasted shoe upper is mounted on the mould so that the insole rests against the free end faces of the threaded extensions 9. Fluid plastic material is then injected into the mould cavity 3 thus formed. The plastic material flows round the threaded extensions 9 and in the case of the stud 7 also round the cylindrical part of the outer surface of the stud. In addition, the material penetrates into the circular groove 10 and fills the latter. In this way, ringshaped shoulders which correspond to the grooves 10 or the cylindrical outer surface of the stud 7 are created in the outsole and these shoulders absorb by far the greatest part of the shear stresses which arise when using the shoe and therefore prevent the threaded extensions 9 from breaking off or shearing off. After the plastic material has hardened, the finished complete football boot can be taken from the mould. Since the plastic material of the studs 6, 7 differs from that of the outsole, the studs can, if required, be unscrewed by applying tools to key faces which are not shown, and be replaced by other studs.
The method in conjunction with the holder inserts according to FIGS. 2, 2a, 2b and 3 takes place correspondingly, except that the holder inserts are screwed 6 onto the gripper elements before the latter are inserted into the mould.
I claim:
1. A method for the manufacture of a plastic material outsole for shoes, especially sports shoes, with exchangeable screw-in gripper elements, having screwthreaded extensions, said method comprising the steps of locating the screw-threaded gripper elements in a mold cavity and thereafter introducing plastic material directly round the screwt hreaded extensions.
2. A method as claimed in claim 1 and further comprising treating the threaded extensions with a release agent before being inserted in the mold.
3. A method as claimed in claim 1, wherein the plastic sole is molded directly onto a ready-lasted upper.
4. A method as claimed in claim 1, wherein the length of the threaded extensions of the gripper elements is chosen to be equal to the thickness of the sole.
5. A method as claimed in claim 1, wherein each gripper element has a support face and a recess in each support face from which the screw-threaded extension projects and is located with this support face flush with the corresponding face of the mold cavity.
6. A method as claimed in claim 1, wherein each gripper element has a support face and is located with its support face projecting a relatively small distance from the corresponding face of the mold cavity.

Claims (6)

1. A method for the manufacture of a plastic material outsole for shoes, especially sports shoes, with exchangeable screw-in gripper elements, having screw-threaded extensions, said method comprising the steps of locating the screw-threaded gripper elements in a mold cavity and thereafter introducing plastic material directly round the screw-threaded extensions.
2. A method as claimed in claim 1 and further comprising treating the threaded extensions with a release agent before being inserted in the mold.
3. A method as claimed in claim 1, wherein the plastic sole is molded directly onto a ready-lasted upper.
4. A method as claimed in claim 1, wherein the length of the threaded extensions of the gripper elements is chosen to be equal to the thickness of the sole.
5. A method as claimed in claim 1, wherein each gripper element has a support face and a recess in each support face from which the screw-threaded extension projects and is located with this support face flush with the corresponding face of the mold cavity.
6. A method as claimed in claim 1, wherein each gripper element has a support face and is located with its support face projecting a relatively small distance from the corresponding face of the mold cavity.
US485815A 1973-08-01 1974-07-05 Method and mould for the manufacture of a plastic sole for shoes Expired - Lifetime US3928881A (en)

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DE2338942A DE2338942B1 (en) 1973-08-01 1973-08-01 Process for the production of a plastic sole for sports shoes and exchangeable gripping element for this
DE2408444 1974-02-21

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Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2806539A1 (en) * 1978-02-16 1979-08-23 Uhl Sportartikel Karl Sports shoe sole with studs - is produced by moulding process with metal separating plate surrounding studs
US4262434A (en) * 1979-07-30 1981-04-21 Michelotti Paul E Running shoe with replaceable tread elements
US4299038A (en) * 1978-11-29 1981-11-10 Brs, Inc. Sole for athletic shoe
DE3440567A1 (en) * 1984-11-07 1986-05-22 Klöckner Ferromatik Desma GmbH, 2807 Achim Sports shoe, in particular football boot, with an injection-moulded sole formed on the insole, and with injection-moulded studs
DE3535830A1 (en) * 1985-10-08 1987-04-16 Kloeckner Ferromatik Desma Shoe, in particular sports shoe
US5560126A (en) * 1993-08-17 1996-10-01 Akeva, L.L.C. Athletic shoe with improved sole
US5572804A (en) * 1991-09-26 1996-11-12 Retama Technology Corp. Shoe sole component and shoe sole component construction method
US5615497A (en) * 1993-08-17 1997-04-01 Meschan; David F. Athletic shoe with improved sole
US5628129A (en) * 1995-06-06 1997-05-13 Nike, Inc. Shoe sole having detachable traction members
US5786057A (en) * 1992-12-10 1998-07-28 Nike, Inc. & Nike International, Ltd. Chemical bonding of rubber to plastic in articles of footwear
US5806210A (en) * 1995-10-12 1998-09-15 Akeva L.L.C. Athletic shoe with improved heel structure
US5832636A (en) * 1996-09-06 1998-11-10 Nike, Inc. Article of footwear having non-clogging sole
US5918384A (en) * 1993-08-17 1999-07-06 Akeva L.L.C. Athletic shoe with improved sole
US6029962A (en) * 1997-10-24 2000-02-29 Retama Technology Corporation Shock absorbing component and construction method
US6098313A (en) * 1991-09-26 2000-08-08 Retama Technology Corporation Shoe sole component and shoe sole component construction method
WO2003005845A1 (en) * 2001-07-09 2003-01-23 Free Minds S.R.L. Method for manufacture of a sports shoe of the type with studs and shoe thus obtained
US6948264B1 (en) 2000-04-26 2005-09-27 Lyden Robert M Non-clogging sole for article of footwear
US7540099B2 (en) 1994-08-17 2009-06-02 Akeva L.L.C. Heel support for athletic shoe
USD679058S1 (en) 2011-07-01 2013-03-26 Intellectual Property Holdings, Llc Helmet liner
USD683079S1 (en) 2011-10-10 2013-05-21 Intellectual Property Holdings, Llc Helmet liner
US8726424B2 (en) 2010-06-03 2014-05-20 Intellectual Property Holdings, Llc Energy management structure
USD733972S1 (en) 2013-09-12 2015-07-07 Intellectual Property Holdings, Llc Helmet
US9320311B2 (en) 2012-05-02 2016-04-26 Intellectual Property Holdings, Llc Helmet impact liner system
US9516910B2 (en) 2011-07-01 2016-12-13 Intellectual Property Holdings, Llc Helmet impact liner system
US9743701B2 (en) 2013-10-28 2017-08-29 Intellectual Property Holdings, Llc Helmet retention system
US9894953B2 (en) 2012-10-04 2018-02-20 Intellectual Property Holdings, Llc Helmet retention system
US10299543B2 (en) * 2011-04-21 2019-05-28 Nike, Inc. Method for making a cleated plate

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3040450A (en) * 1961-02-23 1962-06-26 Fred C Phillips Baseball shoe spikes
US3133363A (en) * 1962-12-10 1964-05-19 Jr Frederick W Warmelle Receptacle for athletic shoe cleat or spike
US3597863A (en) * 1968-02-26 1971-08-10 Marcus Luther Austin Sports shoes
US3735507A (en) * 1972-06-02 1973-05-29 F C Phillips Inc Athletic shoe spike anchor plate
US3846921A (en) * 1972-06-06 1974-11-12 Onitsuka Co Ltd Spiked shoe

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3040450A (en) * 1961-02-23 1962-06-26 Fred C Phillips Baseball shoe spikes
US3133363A (en) * 1962-12-10 1964-05-19 Jr Frederick W Warmelle Receptacle for athletic shoe cleat or spike
US3597863A (en) * 1968-02-26 1971-08-10 Marcus Luther Austin Sports shoes
US3735507A (en) * 1972-06-02 1973-05-29 F C Phillips Inc Athletic shoe spike anchor plate
US3846921A (en) * 1972-06-06 1974-11-12 Onitsuka Co Ltd Spiked shoe

Cited By (55)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2806539A1 (en) * 1978-02-16 1979-08-23 Uhl Sportartikel Karl Sports shoe sole with studs - is produced by moulding process with metal separating plate surrounding studs
US4299038A (en) * 1978-11-29 1981-11-10 Brs, Inc. Sole for athletic shoe
US4262434A (en) * 1979-07-30 1981-04-21 Michelotti Paul E Running shoe with replaceable tread elements
DE3440567A1 (en) * 1984-11-07 1986-05-22 Klöckner Ferromatik Desma GmbH, 2807 Achim Sports shoe, in particular football boot, with an injection-moulded sole formed on the insole, and with injection-moulded studs
DE3535830A1 (en) * 1985-10-08 1987-04-16 Kloeckner Ferromatik Desma Shoe, in particular sports shoe
US5572804A (en) * 1991-09-26 1996-11-12 Retama Technology Corp. Shoe sole component and shoe sole component construction method
US6098313A (en) * 1991-09-26 2000-08-08 Retama Technology Corporation Shoe sole component and shoe sole component construction method
US5786057A (en) * 1992-12-10 1998-07-28 Nike, Inc. & Nike International, Ltd. Chemical bonding of rubber to plastic in articles of footwear
US5843268A (en) * 1992-12-10 1998-12-01 Nike, Inc. Chemical bonding of rubber to plastic in articles of footwear
US6966129B2 (en) 1993-08-17 2005-11-22 Akeva L.L.C. Cushioning for athletic shoe
US6996924B2 (en) 1993-08-17 2006-02-14 Akeva L.L.C. Rear sole structure for athletic shoe
US5826352A (en) * 1993-08-17 1998-10-27 Akeva L.L.C. Athletic shoe with improved sole
US7380350B2 (en) 1993-08-17 2008-06-03 Akeva L.L.C. Athletic shoe with bottom opening
US7114269B2 (en) 1993-08-17 2006-10-03 Akeva L.L.C. Athletic shoe with improved sole
US5918384A (en) * 1993-08-17 1999-07-06 Akeva L.L.C. Athletic shoe with improved sole
US7076892B2 (en) 1993-08-17 2006-07-18 Akeva L.L.C. Shock absorbent athletic shoe
US7069671B2 (en) 1993-08-17 2006-07-04 Akeva L.L.C. Arch bridge for athletic shoe
US6050002A (en) * 1993-08-17 2000-04-18 Akeva L.L.C. Athletic shoe with improved sole
US5615497A (en) * 1993-08-17 1997-04-01 Meschan; David F. Athletic shoe with improved sole
US6195916B1 (en) 1993-08-17 2001-03-06 Akeva, L.L.C. Athletic shoe with improved sole
US6324772B1 (en) 1993-08-17 2001-12-04 Akeva, L.L.C. Athletic shoe with improved sole
US7043857B2 (en) 1993-08-17 2006-05-16 Akeva L.L.C. Athletic shoe having cushioning
US6604300B2 (en) 1993-08-17 2003-08-12 Akeva L.L.C. Athletic shoe with improved sole
US7040041B2 (en) 1993-08-17 2006-05-09 Akeva L.L.C. Athletic shoe with plate
US7040040B2 (en) 1993-08-17 2006-05-09 Akeva L.L.C. Midsole for athletic shoe
US6962009B2 (en) 1993-08-17 2005-11-08 Akeva L.L.C. Bottom surface configuration for athletic shoe
US5560126A (en) * 1993-08-17 1996-10-01 Akeva, L.L.C. Athletic shoe with improved sole
US6966130B2 (en) 1993-08-17 2005-11-22 Akeva L.L.C. Plate for athletic shoe
US6968635B2 (en) 1993-08-17 2005-11-29 Akeva L.L.C. Athletic shoe bottom
US6996923B2 (en) 1993-08-17 2006-02-14 Akeva L.L.C. Shock absorbing athletic shoe
US7540099B2 (en) 1994-08-17 2009-06-02 Akeva L.L.C. Heel support for athletic shoe
US7596888B2 (en) 1994-08-17 2009-10-06 Akeva L.L.C. Shoe with flexible plate
US5628129A (en) * 1995-06-06 1997-05-13 Nike, Inc. Shoe sole having detachable traction members
US5806210A (en) * 1995-10-12 1998-09-15 Akeva L.L.C. Athletic shoe with improved heel structure
US5970628A (en) * 1995-10-12 1999-10-26 Akeva L.L.C. Athletic shoe with improved heel structure
US6662471B2 (en) 1995-10-12 2003-12-16 Akeva, L.L.C. Athletic shoe with improved heel structure
US7082700B2 (en) 1995-10-12 2006-08-01 Akeva L.L.C. Athletic shoe with inclined wall configuration
US7089689B2 (en) 1995-10-12 2006-08-15 Akeva L.L.C. Athletic shoe with inclined wall configuration and non-ground-engaging member
US7536809B2 (en) 1995-10-12 2009-05-26 Akeva L.L.C. Athletic shoe with visible arch bridge
US7127835B2 (en) 1995-10-12 2006-10-31 Akeva L.L.C. Athletic shoe with improved heel structure
US7155843B2 (en) 1995-10-12 2007-01-02 Akeva, L.L.C. Athletic shoe with visible arch bridge
US5832636A (en) * 1996-09-06 1998-11-10 Nike, Inc. Article of footwear having non-clogging sole
US6029962A (en) * 1997-10-24 2000-02-29 Retama Technology Corporation Shock absorbing component and construction method
US6948264B1 (en) 2000-04-26 2005-09-27 Lyden Robert M Non-clogging sole for article of footwear
WO2003005845A1 (en) * 2001-07-09 2003-01-23 Free Minds S.R.L. Method for manufacture of a sports shoe of the type with studs and shoe thus obtained
US8726424B2 (en) 2010-06-03 2014-05-20 Intellectual Property Holdings, Llc Energy management structure
US10299543B2 (en) * 2011-04-21 2019-05-28 Nike, Inc. Method for making a cleated plate
US9516910B2 (en) 2011-07-01 2016-12-13 Intellectual Property Holdings, Llc Helmet impact liner system
USD679058S1 (en) 2011-07-01 2013-03-26 Intellectual Property Holdings, Llc Helmet liner
USD683079S1 (en) 2011-10-10 2013-05-21 Intellectual Property Holdings, Llc Helmet liner
US9320311B2 (en) 2012-05-02 2016-04-26 Intellectual Property Holdings, Llc Helmet impact liner system
US9894953B2 (en) 2012-10-04 2018-02-20 Intellectual Property Holdings, Llc Helmet retention system
US10595578B2 (en) 2012-10-04 2020-03-24 Intellectual Property Holdings, Llc Helmet retention system
USD733972S1 (en) 2013-09-12 2015-07-07 Intellectual Property Holdings, Llc Helmet
US9743701B2 (en) 2013-10-28 2017-08-29 Intellectual Property Holdings, Llc Helmet retention system

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