WO1991003676A1 - Quick connect coupling with twist release - Google Patents

Quick connect coupling with twist release Download PDF

Info

Publication number
WO1991003676A1
WO1991003676A1 PCT/US1990/004871 US9004871W WO9103676A1 WO 1991003676 A1 WO1991003676 A1 WO 1991003676A1 US 9004871 W US9004871 W US 9004871W WO 9103676 A1 WO9103676 A1 WO 9103676A1
Authority
WO
WIPO (PCT)
Prior art keywords
receptacle member
passageway
retention
wire
receptacle
Prior art date
Application number
PCT/US1990/004871
Other languages
French (fr)
Inventor
Rene F. Bernart
Original Assignee
Handy & Harman Automotive Group, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Handy & Harman Automotive Group, Inc. filed Critical Handy & Harman Automotive Group, Inc.
Publication of WO1991003676A1 publication Critical patent/WO1991003676A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L37/00—Couplings of the quick-acting type
    • F16L37/08—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members
    • F16L37/084—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking
    • F16L37/088—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of a split elastic ring
    • F16L37/0885—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of a split elastic ring with access to the split elastic ring from a radial or tangential opening in the coupling

Definitions

  • Patent 4,772,052 provides a substantially fail-safe connection of two tubular members and includes means whereby the tubular members may be disconnected utilizing a supplemental tool, such as a screw driver or the like.
  • U.S. Patent 4,772,052 is incorporated herein by reference.
  • the presen disclosure provides a quick connect and disconnect coupling having the convenience and fail-safe features of the coupling disclosed in Patent 4,772,052, but having significant and substantial improvements.
  • One of the improvements incorporated in the present disclosure is the provision of means to duplicate the connectin mechanism so that if one of the connecting mechanisms fails, the other is in place to prevent inadvertent disconnection.
  • the disclosure of the present quic connect coupling even further improves the fail-safe aspect of the quick connec coupling of Patent 4,772,052.
  • an important feature of the presen disclosure is means whereby the tubular members can be quickly and easil disconnected without the use of tools.
  • the present quick connect and disconnect coupling for fluid conduits include a receptacle member having a passageway through it coincident with the membe longitudinal axis.
  • the passageway has an enlarged internal diameter portio adjacent one end.
  • At least one notch is formed in the receptacle member adjacen the end.
  • the notch extends from the member external surface into the enlarge ⁇ nternal diameter portion of the passageway.
  • the notch is defined by two generally planar surfaces.
  • the first notch surface plane is inclined in the direction towards the member first end at an acute angle relative to the passageway longitudinal axis.
  • the plane of the second surface of the notch is in a direction towards the member second end and is preferably generally perpendicular to the passageway longitudinal axis.
  • each of such notches is formed in the receptacle member preferably placed about 180° apart.
  • Each of the notches is formed in the manner described, that is, each notch is defined by two generally planar surfaces with the first surface being in a plane positioned in the direction towards the member first end and the second surface inclined at an acute angle relative to the passageway longitudinal axis.
  • a tubular plug member is employed having a cylindrical forward end portion with an external diameter less than the internal diameter of the receptacle member enlarged internal diameter portion.
  • the plug member is also further defined by an enlarged external diameter portion spaced from the forward end.
  • the diameter of the enlarged portion is slightly less than the internal diameter of the receptacle member enlarged internal diameter portion.
  • a retention wire is positioned about the receptacle member for each of the notches formed in the receptacle member. That is, if the receptacle member has one notch as described, there is one retention wire and if it has two notches, there are two retention wires.
  • the retention wire associated with each notch has a generally straight portion extending within the notch with the balance of the wire wrapped on the receptacle member external surface but not completely around the external surface, leaving the ends of each of the wires spaced apart from each other.
  • Gasket elements are positioned within the receptacle member passageway to snuggly receive the plug member forward end portion.
  • the release collar Received on the external surface of the receptacle member is a tubular releasing collar.
  • the release collar has inwardly extending wire engaging portions which, upon rotation of the collar, engage one of the ends of the retention wire or one of the ends of each of the retention wires where two such retention wires are employed. Rotating the release collar causes the straight portion of the retention wire received within each notch are to displace radially outwardly with respect to the passageway longitudinal axis. This permits the plug member enlarged external diameter portion to be withdrawn past the retention wire or wires, and thereby • allows the plug member to be separated from the receptacle member.
  • the release collar has means to engage one end of each retention wire irrespective of the direction of rotation of the releasing collar so that thereby the plug member may be disengaged from the receptacle member by rotating the release collar in either direction.
  • Figure 1 is an external elevational view of a preferred embodiment of the receptacle member portion of the quick connect and disconnect coupling of this disclosure.
  • Figure 2 is another elevational view as in Figure 1 taken along the lines 2-2 of Figure 1.
  • Figure 3 is an elevational view of a plug member as utilized with the receptacle member of Figure 1 and 2.
  • Figure 4 is a cross-sectional view of a plug member as taken along the line 4-4 of Figure 3.
  • Figure 5 is an external elevational view of the receptacle member as shown in Figure 1, but with the releasing collar removed to show more details of the receptacle member.
  • Figure 6 is an elevational external view of a releasing collar which is rolatably received on the receptacle member of Figure 5.
  • Figure 7 is an end view of the release collar of Figure 6 as taken along the line 7-7 of Figure 6.
  • Figure 8 is a cross-sectional view of the release collar as taken along the line 8-8 of Figure 7.
  • Figure 9 is another cross-seclional view of the release collar as in Figure 8 with the cross-sectional view taken through a plane 90° displaced from the plane of Figure 8.
  • Figure 10 is a cross-seclional view taken along 10-10 of Figure 1 showing the relationship between the release collar and the retention wire ends.
  • Figure 11 is a cross-sectional view as in Figure 10, but showing the release collar having been rotated to displace the retention wire to permit the plug member to be withdrawn.
  • Figure 12 is an end view of the plug member having the release collar thereon as taken along the line 12-12 of Figure 1 and showing the retention wires in the normal position for retaining a plug member in the connection.
  • Figure 13 is an end view as in Figure 12, but showing the release collar having been rotated to displace the retention wires so as to permit the plug member to be withdrawn.
  • a receptacle member is indicated by the numeral 10 and forms one-half of the basic quick connect and disconnect fitting of this disclosure.
  • the receptacle member 10 is provided with a tube engaging portion 12 by which the receptacle member may be attached to a
  • the illustration of the tube engaging portion 12 is by example only as the receptacle member may have any standard device for attachment to another tubular member such as a threaded fitting or the like. Further, in the illustrated arrangement the tube engaging portion 12 extends at right angles to the body of the receptacle member 10, but this also is by way of example since it could obviously be in alignment with the body.
  • the receptacle member 10 has a passageway 14 therethrough (See Figures 12 and 13) and the passageway 'includes an enlarged diameter portion 16.
  • the passageway 14 includes sealing means (not shown) such as an O-ring or the like, as described in Patent 4,772,052, to sealably receive the plug member 18 as shown in Figures 3 and 4.
  • the plug member 18 has an enlarged diameter portion 20 which is telescopically receivable within the receptacle member enlarged diameter portion 16.
  • the first or forward wall 24 is in a plane substantially perpendicular to the axis of passageway 14.
  • the first notch 22 is further defined by a rearward wall 28 which is in a plane intersecting the receptacle member longitudinal axis at an acute angle.
  • the receptacle member also has a second notch 30 which is displaced from the first notch 22, preferably by about 180°.
  • the second notch 30 has, like the first notch, a forward wall 32 preferably in a plane normal to the axis of the passageway 14, and a rearward wall 34 which intersects the axis of the passageway at an acute angle.
  • the retention wire is formed partially about the external surface of the receptacle member 10, but does not encompass it so that the retention wire 36 has a first end 36B and a second end 36C. The ends are spaced apart from each other and preferably the wire is bent out adjacent the ends 36B and 36C. While not shown in Figure 10, the second notch 30 also receives a retention wire 38 which has a straight portion and opposed end portions.
  • the quick connect and disconnect coupling may be easily designed so that the first and second retention wires 36 and 38 are interchangeable.
  • Figure 12 shows the straight portion 36A of the first retention wire and the straight portion 38A of the second retention wire.
  • the retention wires are held by spring action within their respective notches 22 and 30, but the straight portions 36A and 38A are radially outwardly displaceable as the enlarged diameter portion 20 of the plug member 18 passes between the wires in a manner which is fully described in Patent 4,772,052.
  • the plug member cannot then be inadvertently withdrawn since the wire straight portion 36A and 38A prevent the repassage of the enlarged diameter portion of the plug member.
  • the significant improvement therein is the employment of two notches 22 and 30 and two retention wires 36 and 38 so that the coupling is made even more fail-safe; that is, the employment of two notches with the complementary retention wires adds double assurance that the plug member cannot be inadvertently withdrawn from the receptacle member.
  • the second basic improvement of the present invention is the means of quickly releasing the plug member from retention by the receptacle member.
  • a release collar 40 rotatably received upon the receptacle member.
  • the releasing collar is not concerned with fluid transmission, and, therefore, can generally be loosely fitted upon the receptacle member.
  • inclined projectio ⁇ s 42 As shown in Figure 5, formed on the exterior of the receptacle member 10 are opposed inclined projectio ⁇ s 42. Formed in the tubular release collar 40 are opposed partially circumferential slots 44. The release collar 40 can be slid upon the receptacle member 10. The inclined projections 42 snap within slots 44 so that the release collar is held on the receptacle member, but is permitted to rotate within the limits defined by slots 44.
  • integrally formed in the release collar are inwardly extending wire engaging portions 46. Since in the embodiment illustrated, two notches 22 and 30 are employed with two retention wires 36 and 38, there are four such wire engaging portions 46, that is, one for each of the wire ends, such as 36B and 36C of retention wire 36.
  • a wire-engaging portion 46 engages one of the ends of each of the retention wires 36 and 38, as illustrated in Figure 11, to displace the wire and more particularly, to displace the straight portions 36A and 38A received within notches 22 and 30, respectively.
  • Figure 12 shows the retention wire straight portion 36A and 38A with the releasing collar 40 in its normal or non- rotated position, but Figure 13 shows the retention wire straight portions 36A and 38A as radially outwardly displaced by the rotation of the releasing collar. It can be seen that this allows the plug member enlarged diameter portion 20 to be withdrawn past the retention wires and the plug member 18 to be removed from connection with the receptacle member 10.
  • the quick connect aspect of the coupling of this disclosure functions in the same way described in Patent 4,772,052 except for the provision of a back-up or duplicative feature to further insure the fail-safe connection of the connector by the employment of two spaced-apart notches 22 and 30, each receiving a retention wire 36 and 38.
  • the connector of this disclosure includes the feature of rapid and easy disconnect which is achieved by the rotation of the release collar 40 in either direction.
  • a coupling is formed of only five elements, that is, the receptacle member 10 which can be cast of plastic, the plug member 18 which may be made of plastic or metal, the retention wires 36 and 38 which are preferably formed of metal, and the release collar 40 which can be cast of plastic.
  • the entir coupling can easily be assembled after the cast products are provided by insertin the retention wires 36 and 38 in position on the exterior body of the receptacl member 10 with the straight portions 36A and 36B received within the notches 2 and 30, after which the tubular release collar is snapped in position.

Abstract

A readily attachable and detachable coupling for fluid conduits including a receptacle member (10) having a passageway (14) coincident with the receptacle member longitudinal axis. The passageway (14) has an enlarged internal diameter portion adjacent one end. At least one notch (22) extends from the receptacle member (10) adjacent the end. A tubular plug member (18) having a forward end portion with an external diameter less than the receptacle member passageway is slidably receivable within the receptacle member (10). The receptacle member (10) is connected to the tubular plug (18) via a retention wire (36) having opposed ends received about the receptacle member (10) and a straight portion being received within the notch (22). In order to quickly detach the receptacle member (10) from the tubular plug (18) a release collar (40) is employed which fits over the receptacle member (10) and disengages the retention wire (36) from the tubular plug (18) and receptacle member (10) connection.

Description

QUICK CONNECT COUPLING WITH TWIST RELEASE
Summary of the Invention This disclosure is directed toward an improved quick connect coupling of the type disclosed in United States Patent 4,772,052 issued September 20, 1988 and entitled "QUICK CONNECT COUPLING." This patent shows a type of readily attachable coupling for fluid conduits including a receptacle member and a plug member. The receptacle member is arranged to expeditiously receive and accept a plug member so that two fluid conducting members may be expeditiously connected. The apparatus of Patent 4,772,052 is particularly useful in connecting fluid-carrying small diameter tubing such as used in automobiles although the invention certainly is not limited to this application. The quick connect coupling of Patent 4,772,052 provides a substantially fail-safe connection of two tubular members and includes means whereby the tubular members may be disconnected utilizing a supplemental tool, such as a screw driver or the like. U.S. Patent 4,772,052 is incorporated herein by reference. The presen disclosure provides a quick connect and disconnect coupling having the convenience and fail-safe features of the coupling disclosed in Patent 4,772,052, but having significant and substantial improvements. One of the improvements incorporated in the present disclosure is the provision of means to duplicate the connectin mechanism so that if one of the connecting mechanisms fails, the other is in place to prevent inadvertent disconnection. Thus, the disclosure of the present quic connect coupling even further improves the fail-safe aspect of the quick connec coupling of Patent 4,772,052. In addition, an important feature of the presen disclosure is means whereby the tubular members can be quickly and easil disconnected without the use of tools.
The present quick connect and disconnect coupling for fluid conduits include a receptacle member having a passageway through it coincident with the membe longitudinal axis. The passageway has an enlarged internal diameter portio adjacent one end. At least one notch is formed in the receptacle member adjacen the end. The notch extends from the member external surface into the enlarge ϊnternal diameter portion of the passageway. The notch is defined by two generally planar surfaces. The first notch surface plane is inclined in the direction towards the member first end at an acute angle relative to the passageway longitudinal axis. The plane of the second surface of the notch is in a direction towards the member second end and is preferably generally perpendicular to the passageway longitudinal axis.
In an improved embodiment of the present disclosure, two of such notches are formed in the receptacle member preferably placed about 180° apart. Each of the notches is formed in the manner described, that is, each notch is defined by two generally planar surfaces with the first surface being in a plane positioned in the direction towards the member first end and the second surface inclined at an acute angle relative to the passageway longitudinal axis.
A tubular plug member is employed having a cylindrical forward end portion with an external diameter less than the internal diameter of the receptacle member enlarged internal diameter portion. The plug member is also further defined by an enlarged external diameter portion spaced from the forward end. The diameter of the enlarged portion is slightly less than the internal diameter of the receptacle member enlarged internal diameter portion. A retention wire is positioned about the receptacle member for each of the notches formed in the receptacle member. That is, if the receptacle member has one notch as described, there is one retention wire and if it has two notches, there are two retention wires. The retention wire associated with each notch has a generally straight portion extending within the notch with the balance of the wire wrapped on the receptacle member external surface but not completely around the external surface, leaving the ends of each of the wires spaced apart from each other.
Gasket elements are positioned within the receptacle member passageway to snuggly receive the plug member forward end portion.
Received on the external surface of the receptacle member is a tubular releasing collar. The release collar has inwardly extending wire engaging portions which, upon rotation of the collar, engage one of the ends of the retention wire or one of the ends of each of the retention wires where two such retention wires are employed. Rotating the release collar causes the straight portion of the retention wire received within each notch are to displace radially outwardly with respect to the passageway longitudinal axis. This permits the plug member enlarged external diameter portion to be withdrawn past the retention wire or wires, and thereby • allows the plug member to be separated from the receptacle member.
In the preferred arrangement the release collar has means to engage one end of each retention wire irrespective of the direction of rotation of the releasing collar so that thereby the plug member may be disengaged from the receptacle member by rotating the release collar in either direction.
The prior art is replete with devices for connecting and disconnecting tubular members, and for reference to background prior art the following prior issued patents are considered to be the best prior art known to the applicant: U.S. Patents: 921,691; 2,441,344; 3,314,696; 3,453,005; 3,534,988; 3,538,940; 3,584,902 3,574,359; 3,628,768; 3,711,125; 3,724,882; 3,826,523; 4,005,883; 4,009,896; 4,123,089 4,123,091; 4,128,264; 4,635,974; 4,772,052; German Patents: 2028711; and 2622269 UK Patent 1,030,535;
A better and more complete understanding of the invention will be had by reference to the following description and claims, taken in conjunction with the attached drawings.
Description of the Drawings Figure 1 is an external elevational view of a preferred embodiment of the receptacle member portion of the quick connect and disconnect coupling of this disclosure. Figure 2 is another elevational view as in Figure 1 taken along the lines 2-2 of Figure 1.
Figure 3 is an elevational view of a plug member as utilized with the receptacle member of Figure 1 and 2.
Figure 4 is a cross-sectional view of a plug member as taken along the line 4-4 of Figure 3.
Figure 5 is an external elevational view of the receptacle member as shown in Figure 1, but with the releasing collar removed to show more details of the receptacle member.
Figure 6 is an elevational external view of a releasing collar which is rolatably received on the receptacle member of Figure 5.
Figure 7 is an end view of the release collar of Figure 6 as taken along the line 7-7 of Figure 6.
Figure 8 is a cross-sectional view of the release collar as taken along the line 8-8 of Figure 7. Figure 9 is another cross-seclional view of the release collar as in Figure 8 with the cross-sectional view taken through a plane 90° displaced from the plane of Figure 8.
Figure 10 is a cross-seclional view taken along 10-10 of Figure 1 showing the relationship between the release collar and the retention wire ends. Figure 11 is a cross-sectional view as in Figure 10, but showing the release collar having been rotated to displace the retention wire to permit the plug member to be withdrawn.
Figure 12 is an end view of the plug member having the release collar thereon as taken along the line 12-12 of Figure 1 and showing the retention wires in the normal position for retaining a plug member in the connection. Figure 13 is an end view as in Figure 12, but showing the release collar having been rotated to displace the retention wires so as to permit the plug member to be withdrawn.
Description of the Preferred Embodiment
Referring to the drawings and first to Figure 5, a receptacle member is indicated by the numeral 10 and forms one-half of the basic quick connect and disconnect fitting of this disclosure. The receptacle member 10 is provided with a tube engaging portion 12 by which the receptacle member may be attached to a
; conduit. The illustration of the tube engaging portion 12 is by example only as the receptacle member may have any standard device for attachment to another tubular member such as a threaded fitting or the like. Further, in the illustrated arrangement the tube engaging portion 12 extends at right angles to the body of the receptacle member 10, but this also is by way of example since it could obviously be in alignment with the body.
The receptacle member 10 has a passageway 14 therethrough (See Figures 12 and 13) and the passageway 'includes an enlarged diameter portion 16. The passageway 14 includes sealing means (not shown) such as an O-ring or the like, as described in Patent 4,772,052, to sealably receive the plug member 18 as shown in Figures 3 and 4. The plug member 18 has an enlarged diameter portion 20 which is telescopically receivable within the receptacle member enlarged diameter portion 16.
As shown in Figure 5, the receptacle member h,as, formed in the external cylindrical surface thereof, a first notch 22 which is defined by a forward wall 24 in the direction towards the receptacle member first end 26. The first or forward wall 24 is in a plane substantially perpendicular to the axis of passageway 14. The first notch 22 is further defined by a rearward wall 28 which is in a plane intersecting the receptacle member longitudinal axis at an acute angle. The receptacle member also has a second notch 30 which is displaced from the first notch 22, preferably by about 180°. The second notch 30 has, like the first notch, a forward wall 32 preferably in a plane normal to the axis of the passageway 14, and a rearward wall 34 which intersects the axis of the passageway at an acute angle. Received in the first notch 22, as best seen in Figure 10, is the straight portion 36A of a first retention wire 36. The retention wire is formed partially about the external surface of the receptacle member 10, but does not encompass it so that the retention wire 36 has a first end 36B and a second end 36C. The ends are spaced apart from each other and preferably the wire is bent out adjacent the ends 36B and 36C. While not shown in Figure 10, the second notch 30 also receives a retention wire 38 which has a straight portion and opposed end portions. The quick connect and disconnect coupling may be easily designed so that the first and second retention wires 36 and 38 are interchangeable. Figure 12 shows the straight portion 36A of the first retention wire and the straight portion 38A of the second retention wire. The retention wires are held by spring action within their respective notches 22 and 30, but the straight portions 36A and 38A are radially outwardly displaceable as the enlarged diameter portion 20 of the plug member 18 passes between the wires in a manner which is fully described in Patent 4,772,052. However, after the enlarged diameter portion 20 of the plug member has passed the retention wires 36 and 38, the plug member cannot then be inadvertently withdrawn since the wire straight portion 36A and 38A prevent the repassage of the enlarged diameter portion of the plug member.
Thus, with respect to the receptacle member 10, compared to the receptacle member described in Patent 4,772,052, the significant improvement therein is the employment of two notches 22 and 30 and two retention wires 36 and 38 so that the coupling is made even more fail-safe; that is, the employment of two notches with the complementary retention wires adds double assurance that the plug member cannot be inadvertently withdrawn from the receptacle member. The second basic improvement of the present invention is the means of quickly releasing the plug member from retention by the receptacle member. For this purpose, rotatably received upon the receptacle member is a release collar 40. The releasing collar is not concerned with fluid transmission, and, therefore, can generally be loosely fitted upon the receptacle member. As shown in Figure 5, formed on the exterior of the receptacle member 10 are opposed inclined projectioπs 42. Formed in the tubular release collar 40 are opposed partially circumferential slots 44. The release collar 40 can be slid upon the receptacle member 10. The inclined projections 42 snap within slots 44 so that the release collar is held on the receptacle member, but is permitted to rotate within the limits defined by slots 44.
Integrally formed in the release collar are inwardly extending wire engaging portions 46. Since in the embodiment illustrated, two notches 22 and 30 are employed with two retention wires 36 and 38, there are four such wire engaging portions 46, that is, one for each of the wire ends, such as 36B and 36C of retention wire 36.
When the release collar 40 is rotated, a wire-engaging portion 46 engages one of the ends of each of the retention wires 36 and 38, as illustrated in Figure 11, to displace the wire and more particularly, to displace the straight portions 36A and 38A received within notches 22 and 30, respectively. Figure 12 shows the retention wire straight portion 36A and 38A with the releasing collar 40 in its normal or non- rotated position, but Figure 13 shows the retention wire straight portions 36A and 38A as radially outwardly displaced by the rotation of the releasing collar. It can be seen that this allows the plug member enlarged diameter portion 20 to be withdrawn past the retention wires and the plug member 18 to be removed from connection with the receptacle member 10.
It can be seen that the quick connect aspect of the coupling of this disclosure functions in the same way described in Patent 4,772,052 except for the provision of a back-up or duplicative feature to further insure the fail-safe connection of the connector by the employment of two spaced-apart notches 22 and 30, each receiving a retention wire 36 and 38. In addition, the connector of this disclosure includes the feature of rapid and easy disconnect which is achieved by the rotation of the release collar 40 in either direction. Other than the provision of one or more gaskets or O-ring members, a coupling is formed of only five elements, that is, the receptacle member 10 which can be cast of plastic, the plug member 18 which may be made of plastic or metal, the retention wires 36 and 38 which are preferably formed of metal, and the release collar 40 which can be cast of plastic. The entir coupling can easily be assembled after the cast products are provided by insertin the retention wires 36 and 38 in position on the exterior body of the receptacl member 10 with the straight portions 36A and 36B received within the notches 2 and 30, after which the tubular release collar is snapped in position.
The claims and the specification describe the invention presented and th terms that are employed in the claims draw their meaning from the use of suc terms in the specification. The same terms employed in the prior art may b broader in meaning than specifically employed herein. Whenever there is question between the broader defim'tion of such terms used in the prior art and th more specific use of the terms herein, the more specific meaning is meant.
While the invention has been described with a certain degree of particularit it is manifest that many changes may be made in the details of construction an the arrangement of components without departing from the spirit and scope of thi disclosure. It is understood that the invention is not limited to the embodiment set forth herein for purposes of exemplification, but is to be limited only by th scope of the attached claim or claims, including the full range of equivalency t which each element thereof is entitled.

Claims

Wiiat is claimed is: 1. A readily attachable and detachable coupling for fluid conduits, comprising: a receptacle member having a passageway therethrough coincident with a longitudinal axis and having a first end, the passageway having an enlarged internal diameter portion adjacent said first end, the receptacle member having a notch formed therein, the notch extending from the receptacle member exterior surface into said enlarged diameter passageway, and having a forward wall in the direction away from said first end and a rearward wall in the direction towards said first end, the forward wall being in a plane intersecting said receptacle member longitudinal axis at an acute angle and the rearward wall being in a plane intersecting the receptacle member longitudinal axis substantially radially thereof; a tubular plug member having a forward end portion having an external diameter less than said receptacle member passageway and being slidably receivable within said receptacle member, the plug member having adjacent to and spaced from said forward end a short length, radially extending, enlarged, external diameter portion, the enlarged diameter portion being slideably receivable within said enlarged, internal diameter portion of said receptacle member passageway; a retention wire having opposed ends received about said receptacle member and fixed axially thereto and a generally straight portion of said retention wire being received within a said notch, said plug member being insertable within said receptacle member passageway, the enlarged diameter portion displacing said straight portion of said retention wire outwardly and on said forward wall, and after the enlarged diameter portion passes the wire straight portion, the wire portion returns to a seated position rearwardly of said enlarged diameter portion to thereby retain said plug member within said receptacle member; and means carried by said receptacle member of displacing said retention wire straight portion within said notch outwardly relative to said receptacle member passageway and away from said seated position whereby said enlarged diameter portion of said plug member may pass said retention wire to enable said plug member to be withdrawn from said receptacle member.
2. An improved coupling according to claim 1 wherein said retention wire is substantially straight in said portion received in said notch and the balance of the wire curves around at least a substantial portion of, but less than all of the external circumferential surface of said receptacle member, the opposed ends of said retention wires being thereby displaced away from said substantially straight portion, and wherein said means of displacing said retention wire straight portion includes means of engaging one of said ends of said retention wire and displacing said engaged end in the direction towards said straight portion.
3. An improved coupling according to claim 2 wherein said means of engaging one of said ends of said retention wire includes a release collar means rotalably received on said receptacle member.
4. An improved coupling according to claim 3 wherein said release collar means is tubular and rotatably received on said receptacle member and includes at least one inwardly extending release member portion which, upon rotation of said releasing collar, engages -said one end of said wire.
5. An improved coupling according to claim 3 wherein said release collar has means upon rotation of said collar in one direction relative to said receptacle member to engage one said end of said wire, and upon rotation in the other direction to engage the other said end of said wire whereby said retention wire straight portion may be outwardly displaced by rotation of said release collar in either direction.
6. An improved readily attachable and detachable coupling for fluid conduits, comprising: a receptacle member having a passageway therethrough coincident with a longitudinal axis and having a first end, the passageway having an enlarged internal diameter portion adjacent said first end, the receptacle member having first and second spaced apart notches formed therein, each notch extending from the receptacle member exterior surface into said enlarged diameter passageway, each notch having a rearward wall in the direction towards said first end and a forward wall in the direction away from said first end, the forward wall of each notch being in a plane, intersecting said receptacle member longitudinal axis at an acute angle and the rearward wall of each notch being in a place intersecting the receptacle member longitudinal axis substantially radially thereof; a tubular plug member having a forward end portion having an external diameter less than said receptacle member passageway and being slidably receivable within said receptacle member, the plug member having adjacent to and spaced from said forward end and a short length, radially extending circumferentially enlarged external diameter portion spaced from said forward end, the enlarged diameter portion being slideably receivable within said enlarged internal diameter portion of said receptacle member passageway; and first and second retention wires received partially about said receptacle member and fixed axially thereto and a generally straight portion of each said retention wire being received within a said notch, said plug member being insertable within said receptacle member passageway, the enlarged diameter portion displacing said straight portion of each said retention wire outwardly and on said forward wall of each said notch, and after the enlarged diameter portion passes the wire straight portions, the wire straight portions each return to a seated position rearwardly of said plug member enlarged diameter portion to thereby retain said plug member within said receptacle member.
7. An improved coupling member according to claim 6 wherein said first and second notches are spaced about 180° from each other about said receptacle member passageway longitudinal axis. -'
8. An improved coupling according to claim 6 wherein said retention wires are each substantially straight in said portion received in said notches and each curves around at least a substantial portion of, but less than all of the balance of the external circumferential surface of said receptacle member.
9. A coupling according to claim 6 wherein said receptacle has a first and second circumferential recess in the exterior surface thereof in a plane substantially perpendicular said longitudinal axis and coincident with said notches, said retention wires being received in said notches and in said recesses.
10. An improved readily attachable and detachable coupling for fluid conduits, comprising: a receptacle member having a passageway therethrough coincident with a longitudinal axis and having a first end, the passageway having an enlarged internal diameter portion adjacent said first end, the receptacle member having first and : second spaced apart notches formed therein, each notch extending from the receptacle member exterior surface into said enlarged diameter passageway, each notch having a rearward wall in the direction towards said first end and a forward wall in the direction away from said first end, the forward wall of each notch being in a plane intersecting said receptacle member longitudinal axis at an acute angle and the rearward wall of each notch being in a plane intersecting the receptacle member longitudinal axis substantially radially thereof; a tubular plug member ; having a forward end portion having an external diameter less than said receptacle member passageway and being slidably receivable within said receptacle member, the plug member having spaced from the forward end a short length, radially extending circumferentially enlarged external diameter portion spaced from said forward end, the enlarged diameter portion being slideably receivable within said receptacle member enlarged internal diameter passageway; first and second retention wires each having opposed ends and being received about said receptacle member and fixed axially thereto and a generally straight portion of each said retention wire being received within a said notch, said plug member being insertable within said receptacle member passageway, the enlarged diameter portion displacing said straight portion of each said retention wire outwardly and on said forward wall of each said notch, and after the enlarged diameter portion passes the wire straight portions, the wire straight portions each returns to their sealed position rearwardly of said enlarged plug member diameter portion to thereby retain said plug member within said receptacle member; and means of simultaneously displacing said retention wire portions within said first and second notches outwardly relative to said receptacle member passageway and away from said seated positions whereby said enlarged diameter portion of said plug member may pass said retention wires to enable said plug member to be withdrawn from said receptacle member.
11. An improved coupling according to claim 10 wherein said retention wires are each substantially straight in said portion received in said notches and each curves around at least a substantial portion of, but less than all of the balance of the external circumferential surface of said receptacle member, the opposed ends of each of said retention wires being thereby displaced away from said substantially straight portion, and wherein said means of displacing said retention wire straight portions includes means of substantially simultaneously engaging one of each of said ends of each of said retention wires and displacing said engaged ends in the direction towards said straight portions.
12. An improved coupling according to claim 11 wherein said means of engaging one of said ends of each of said retention wires includes: a release collar means rotatably received on said receptacle member.
13. An improved coupling according to claim 12 wherein said release collar means is tubular and rotatably received on said receptacle member and includes at least one inwardly extending release member for each said retention wire which, upon rotation of said releasing collar, engages a said end of each of said retention wires.
14. An improved coupling according to claim 12 wherein said release collar has means upon rotation of said collar in one direction relative to said receptacle member to engage substantially simultaneously one end of each of said wires, and upon rotation in the other direction to engage substantially simultaneously the other end of each of said wires whereby said retention wire straight portions may be simultaneously outwardly displaced by rotation of said release collar in either direction.
PCT/US1990/004871 1989-08-28 1990-08-27 Quick connect coupling with twist release WO1991003676A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/399,255 US4991880A (en) 1989-08-28 1989-08-28 Quick connect coupling with twist release
US399,255 1989-08-28

Publications (1)

Publication Number Publication Date
WO1991003676A1 true WO1991003676A1 (en) 1991-03-21

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Application Number Title Priority Date Filing Date
PCT/US1990/004871 WO1991003676A1 (en) 1989-08-28 1990-08-27 Quick connect coupling with twist release

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US (1) US4991880A (en)
AU (1) AU6343090A (en)
WO (1) WO1991003676A1 (en)

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Also Published As

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AU6343090A (en) 1991-04-08
US4991880A (en) 1991-02-12

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