US2756809A - Back support for chairs, car seats, and the like - Google Patents
Back support for chairs, car seats, and the like Download PDFInfo
- Publication number
- US2756809A US2756809A US440517A US44051754A US2756809A US 2756809 A US2756809 A US 2756809A US 440517 A US440517 A US 440517A US 44051754 A US44051754 A US 44051754A US 2756809 A US2756809 A US 2756809A
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- US
- United States
- Prior art keywords
- plate
- chairs
- back support
- convex
- concave
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- Expired - Lifetime
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/70—Upholstery springs ; Upholstery
- B60N2/7023—Coach-like constructions
- B60N2/7029—Coach-like constructions back-rests
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
- A47C7/36—Support for the head or the back
- A47C7/40—Support for the head or the back for the back
- A47C7/46—Support for the head or the back for the back with special, e.g. adjustable, lumbar region support profile; "Ackerblom" profile chairs
- A47C7/462—Support for the head or the back for the back with special, e.g. adjustable, lumbar region support profile; "Ackerblom" profile chairs adjustable by mechanical means
Definitions
- the invention relates to an improved back support for chairs, car seats and the like such as back rests for hospitals, specially designed to counteract and prevent pains in the back, such as sciatica, lumbago and the like, and is concerned primarily with a back rest of the kind consisting of a relatively stiff plate adapted to follow the lines of the human back and having a lower convex part and an upper concave or straight part, the curves of the plate being adjustable by means such as screws which can be manipulated to increase or decrease the convexity and concavity of the plate to suit the seated person.
- the arrangement according to the present invention is characterized in that means are provided for moving the ridges of the curvatures in the longitudinal direction of the plate and for adjustment of the transition curve between the shaped parts thereof. Efficient means are thereby obtained whereby the form of the plate can be adjusted in accordance with the particular contour of the back of the seated person, such backline differing from person to person.
- the back support is specially designed to be placed in the drivers seat of buses and motorcars, but can also be used in hospitals by being placed in bed for a pa tient to lie on or as a back rest.
- Figure 1 shows a longitudinal section taken on the line 1-1 of Figure 2;
- Figure 2 is a front view of Figure l and Figure 3 is a horizontal cross section taken on the line 3-3 of Figure 2.
- the back support consists of a flexible steel plate 1, mounted for example in a chair frame 2, the back of which is closed by a back plate 6.
- the lower edge of the steel plate 1 is fastened around a bolt 3 and at the top the upper end is fastened around a bolt 4 slidable in a vertical groove 5, so that the plate has a certain latitude of up and down sliding movement when the curves thereof are regulated.
- the lower part of the plate 1 When the back is adjusted in accordance with a persons back lines, the lower part of the plate 1 must be more or less convex and its upper part more or less concave (or if necessary straight). Convexity and concavity is regulated by means of two screws 7 and 8 which are moved in and out by means of nuts 11 and 12 respectively.
- the screws '7, 3 have secured at their outer ends crossbars 9 and it), which support the plate 1 transversely, the crossbars 9, being provided with hooked ends 9a and ltla respectively which grip around the side edges of the plate 1.
- the screws 7, 8 also extend through holes in transverse plates 15 and 16 respectively which are of channel-form in cross section and rest against the side rails 2 and the back plate 6 of the chair frame.
- the plates 15 and 16 are adjustable vertically so that the ridges or 2 tops of the convex and concave plate parts may be moved in the vertical direction of the plate so that the curves of the plate and the transition curvebetween the convex and concave parts can be altered in-the required manner.
- each plate 15 and 16 is fastened a threaded chock which engages screws 13 and 14 operable by means of nuts 17 and E8. Rotation of the nuts 17, 1-8 will cause the plates 15, 16 to be raised or lowered and thereby also the screws 7 and 8 and the cross-bars 9 and 10. In this manner the top points or ridges of the convex and concave parts of the plate 1 are raised or lowered to fit the lines of the back of a seated person, and the transition curve between the two curved parts may also be adjusted, by moving the supporting bars 9 and lit closer together or further apart from each other. Full control of the curves of the back plate 1 is thereby gained and they may be closely adjusted to fit any personal back line.
- the whole adjustment may be effected quickly by means of the four nuts 11 and 12 and 17 and 18.
- the back support may be mounted to swing within a limited angle, in the vertical plane, in a chair frame, so that the cant of the back support may be adjusted while a person is sitting in the chair or seat.
- the steel plate 1 may be provided with padding and in this case a vertical depression or thinning out in the padding may be arranged vertically in the middle of the back so that the vertebrae are not exposed to pressure.
- the back support may be mounted so that it can be raised or lowered in the chair frame.
- a back support for chairs and the like consisting of a relatively stiff back plate mounted in a chair frame, said back plate being capable of adjustment to the back line of a user, said plate having a lower convex part and an upper concave part, screw means for adjusting the convexity and concavity of said parts and means for adjusting the position of the ridges of the convex and concave parts, said screw means being adjustable in the same direction to control the transition curve between said parts of the plate, vertically slidable plates of channel cross section mounted in the chair frame and carrying said screw means for adjusting the convexity and concavity of the back plate, cross-bars forming part of said screw means, hooked ends to said cross-bars adapted to grip the side edges of the back plate and form a support therefor, said slidable plate being provided with side flanges and said flanges having slots therein to serve as a guide for the said crossbars.
- a back support for chairs and the like comprising a relatively stitf back plate mounted in a chair frame, said back plate being capable of adjustment to the back line or" a user and having a lower convex part and an upper concave part with ridges defining the same, screw means for adjusting the convexity and concavity of the said convex and concave parts and means for adjusting the position of the ridges of the said convex and concave parts in a vertical direction, said screw means being adjustable in the same direction to control the transition between the convex and concave parts of the plate and including supporting cross bars at their outer ends adapted to support the back plate transversely, the said supporting cross bars having hooked ends adapted to grip the side edges of the back plate.
- a back support for chairs and the like comprising a relatively still back plate mounted in a chair frame, said back plate being capable of adjustment to the back line of a user and having a lower convex part and an upper concave part with ridges defining the same, screw means for adjusting the convexity and concavity of the said convex and concave parts and means for adjusting the position of the ridges of the said convex and concave parts in a vertical direction, said screw means being adjustable in the same direction to control the transition between the convex and concave parts of the plate, said plate being provided with padding which is vertically thinned out centrally thereof.
Description
July 31, 1956 ENDRESEN 2,756,809
BACK SUPPORT FOR CHAIRS, CAR SEATS, AND THE LIKE Filed June 50, 1954 United States Patent BACK SUPPORT FoReirAiR's, SEATS, AND THE LIKE Ernst Endresen, St'a'vaiiger, Norway Application June 30, 1954, Serial No. 440,517
3 Claims. (Cl. 155-182) The invention relates to an improved back support for chairs, car seats and the like such as back rests for hospitals, specially designed to counteract and prevent pains in the back, such as sciatica, lumbago and the like, and is concerned primarily with a back rest of the kind consisting of a relatively stiff plate adapted to follow the lines of the human back and having a lower convex part and an upper concave or straight part, the curves of the plate being adjustable by means such as screws which can be manipulated to increase or decrease the convexity and concavity of the plate to suit the seated person.
The arrangement according to the present invention is characterized in that means are provided for moving the ridges of the curvatures in the longitudinal direction of the plate and for adjustment of the transition curve between the shaped parts thereof. Efficient means are thereby obtained whereby the form of the plate can be adjusted in accordance with the particular contour of the back of the seated person, such backline differing from person to person. The back support is specially designed to be placed in the drivers seat of buses and motorcars, but can also be used in hospitals by being placed in bed for a pa tient to lie on or as a back rest.
One example of the device is shown on the accompanying drawing wherein:
Figure 1 shows a longitudinal section taken on the line 1-1 of Figure 2;
Figure 2 is a front view of Figure l and Figure 3 is a horizontal cross section taken on the line 3-3 of Figure 2.
The back support consists of a flexible steel plate 1, mounted for example in a chair frame 2, the back of which is closed by a back plate 6. The lower edge of the steel plate 1 is fastened around a bolt 3 and at the top the upper end is fastened around a bolt 4 slidable in a vertical groove 5, so that the plate has a certain latitude of up and down sliding movement when the curves thereof are regulated.
When the back is adjusted in accordance with a persons back lines, the lower part of the plate 1 must be more or less convex and its upper part more or less concave (or if necessary straight). Convexity and concavity is regulated by means of two screws 7 and 8 which are moved in and out by means of nuts 11 and 12 respectively. The screws '7, 3 have secured at their outer ends crossbars 9 and it), which support the plate 1 transversely, the crossbars 9, being provided with hooked ends 9a and ltla respectively which grip around the side edges of the plate 1. The screws 7, 8 also extend through holes in transverse plates 15 and 16 respectively which are of channel-form in cross section and rest against the side rails 2 and the back plate 6 of the chair frame. The plates 15 and 16 are adjustable vertically so that the ridges or 2 tops of the convex and concave plate parts may be moved in the vertical direction of the plate so that the curves of the plate and the transition curvebetween the convex and concave parts can be altered in-the required manner.
The cross-bars 9, '10'are guided in slots 9b, 101) in the sideflanges of theplate's 1'5, 1'6, aiidin'o'r'der'tb enable vertical iribvemeiits'ofthe nuts11,'1 2, slots 19, 20 are provided in the back plate 6.
To each plate 15 and 16 is fastened a threaded chock which engages screws 13 and 14 operable by means of nuts 17 and E8. Rotation of the nuts 17, 1-8 will cause the plates 15, 16 to be raised or lowered and thereby also the screws 7 and 8 and the cross-bars 9 and 10. In this manner the top points or ridges of the convex and concave parts of the plate 1 are raised or lowered to fit the lines of the back of a seated person, and the transition curve between the two curved parts may also be adjusted, by moving the supporting bars 9 and lit closer together or further apart from each other. Full control of the curves of the back plate 1 is thereby gained and they may be closely adjusted to fit any personal back line.
The whole adjustment may be effected quickly by means of the four nuts 11 and 12 and 17 and 18. The back support may be mounted to swing within a limited angle, in the vertical plane, in a chair frame, so that the cant of the back support may be adjusted while a person is sitting in the chair or seat. The steel plate 1 may be provided with padding and in this case a vertical depression or thinning out in the padding may be arranged vertically in the middle of the back so that the vertebrae are not exposed to pressure. The back support may be mounted so that it can be raised or lowered in the chair frame.
It will be appreciated that constructional detail concerning the chair or seat frame in which the back is fitted may be altered in many ways, the regulation of the ridges of the convex and concave plate parts thereof and the regulation of the transition curve between these two curved parts being the essential features of the invention.
What I claim and desire tosecure by Letters Patent is:
1. A back support for chairs and the like, consisting of a relatively stiff back plate mounted in a chair frame, said back plate being capable of adjustment to the back line of a user, said plate having a lower convex part and an upper concave part, screw means for adjusting the convexity and concavity of said parts and means for adjusting the position of the ridges of the convex and concave parts, said screw means being adjustable in the same direction to control the transition curve between said parts of the plate, vertically slidable plates of channel cross section mounted in the chair frame and carrying said screw means for adjusting the convexity and concavity of the back plate, cross-bars forming part of said screw means, hooked ends to said cross-bars adapted to grip the side edges of the back plate and form a support therefor, said slidable plate being provided with side flanges and said flanges having slots therein to serve as a guide for the said crossbars.
2. A back support for chairs and the like comprising a relatively stitf back plate mounted in a chair frame, said back plate being capable of adjustment to the back line or" a user and having a lower convex part and an upper concave part with ridges defining the same, screw means for adjusting the convexity and concavity of the said convex and concave parts and means for adjusting the position of the ridges of the said convex and concave parts in a vertical direction, said screw means being adjustable in the same direction to control the transition between the convex and concave parts of the plate and including supporting cross bars at their outer ends adapted to support the back plate transversely, the said supporting cross bars having hooked ends adapted to grip the side edges of the back plate.
3. A back support for chairs and the like comprising a relatively still back plate mounted in a chair frame, said back plate being capable of adjustment to the back line of a user and having a lower convex part and an upper concave part with ridges defining the same, screw means for adjusting the convexity and concavity of the said convex and concave parts and means for adjusting the position of the ridges of the said convex and concave parts in a vertical direction, said screw means being adjustable in the same direction to control the transition between the convex and concave parts of the plate, said plate being provided with padding which is vertically thinned out centrally thereof.
References Cited in the file of this patent UNITED STATES PATENTS 958,356 Bode May 17, 1910 1,264,265 Brusius Apr. 30, 1918 1,677,584 Cronwell July 17, 1928 1,937,920 Smith Dec. 5, 1933 2,359,318 Lay et a1 Oct. 3, 1944 2,549,902 Hibbard et al. Apr. 24, 1951 2,550,831 Lingenfelter May 1, 1951 FOREIGN PATENTS 2,598 Great Britain 1899
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US440517A US2756809A (en) | 1954-06-30 | 1954-06-30 | Back support for chairs, car seats, and the like |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US440517A US2756809A (en) | 1954-06-30 | 1954-06-30 | Back support for chairs, car seats, and the like |
Publications (1)
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US2756809A true US2756809A (en) | 1956-07-31 |
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US440517A Expired - Lifetime US2756809A (en) | 1954-06-30 | 1954-06-30 | Back support for chairs, car seats, and the like |
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Cited By (83)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2843195A (en) * | 1956-01-25 | 1958-07-15 | Alvar E A Barvaeus | Self-adjusting back support |
US2894565A (en) * | 1957-05-17 | 1959-07-14 | Hubert R Crane | Contouring back rest for motor vehicle seats |
US3106423A (en) * | 1960-11-21 | 1963-10-08 | Schwarz Johann | Back rest having an adjustable shaped element |
US3124389A (en) * | 1964-03-10 | mi kan | ||
DE1169625B (en) * | 1958-06-11 | 1964-05-06 | Alvar Barvaeus | Backrest with a shaped surface made of elastically flexible length parts for seating or the like. |
US3258259A (en) * | 1964-07-14 | 1966-06-28 | Volvo Ab | Seat backrest with tensioning means |
DE1221772B (en) * | 1960-04-13 | 1966-07-28 | Dr Otto Alfred Becker | Seating |
US3463544A (en) * | 1968-04-22 | 1969-08-26 | Edward Froelich | Orthopedic seat back |
US3464754A (en) * | 1967-01-17 | 1969-09-02 | Rex Stroll O Chair Co | Orthopedic chair |
US3880463A (en) * | 1972-02-02 | 1975-04-29 | Ipeco Europe Ltd | Seat with back support |
DE2733744A1 (en) * | 1976-04-21 | 1979-02-15 | Hans Wiener | Fixed or movable seat or bed backrest with adjustable curvature - has movable horizontal spacer between base plate and resilient support (SW 14.11.77) |
DE2736550A1 (en) * | 1977-08-13 | 1979-02-22 | Grammer Willibald Fa | DEVICE FOR ADJUSTING THE INCLINATION OF THE SEAT CUSHION IN A DRIVER'S SEAT, OFFICE CHAIR, SWIVEL CHAIR O.DGL. |
EP0006840A1 (en) * | 1978-06-23 | 1980-01-09 | Wilhelm Ing. Schuster | Flexible elastic support |
US4313637A (en) * | 1978-11-18 | 1982-02-02 | Uop Inc. | Seat having a movable lumbar support |
US4316631A (en) * | 1979-01-24 | 1982-02-23 | Steyr-Daimler-Puch Aktiengesellschaft | Backrest |
DE3045809A1 (en) * | 1980-12-05 | 1982-07-08 | Fa. Willibald Grammer, 8450 Amberg | SEAT WITH DISC SUPPORT |
US4339150A (en) * | 1980-05-05 | 1982-07-13 | Gmsr Ortho Enterprises, Inc. | Back support construction |
DE3324655A1 (en) * | 1983-07-08 | 1985-01-24 | Fa. Willibald Grammer, 8450 Amberg | SEAT WITH DISC SUPPORT |
US4520800A (en) * | 1983-05-09 | 1985-06-04 | Standex International Corporation | Patient treatment table |
EP0153390A1 (en) * | 1983-08-15 | 1985-09-04 | Robin Morgenstern | Lumbosacral backrest with adjustable contour. |
US4634178A (en) * | 1984-12-10 | 1987-01-06 | Carney Steven H | Adaptable seating device |
EP0291298A1 (en) * | 1987-05-13 | 1988-11-17 | Joseph Mary Jacobsen | Measuring apparatus |
US4915447A (en) * | 1989-03-13 | 1990-04-10 | Sears Manufacturing Company | Vehicle seat with adjustable thigh support |
DE4211094C1 (en) * | 1992-04-03 | 1993-06-03 | Grammer Ag, 8450 Amberg, De | Backrest support for vehicle seat - has flexible support plate over U=channel with two sets of shoulders braced on slidable wedge |
US5217278A (en) * | 1991-03-13 | 1993-06-08 | Findlay Industries, Inc. | Mechanism for providing adjustable lumbar support in a seat |
US5344211A (en) * | 1993-08-05 | 1994-09-06 | Riyaz Adat | Adjustable backrest |
US5385531A (en) * | 1992-07-08 | 1995-01-31 | Eurokeyton S.A. | Massage robot for relaxation armchair |
US5474358A (en) * | 1992-04-29 | 1995-12-12 | Youngflex S.A. | Seat arrangements providing adjustable lumbar support |
EP0698360A1 (en) | 1994-08-10 | 1996-02-28 | Austro Investment S.A. | Adjustable anatomical support, particularly lumbar support |
US5609394A (en) * | 1996-02-23 | 1997-03-11 | Ligon Brothers Manufacturing Company | Four-way lumbar support |
US5641205A (en) * | 1995-02-17 | 1997-06-24 | R. Schmidt Gmbh | Apparatus for adjusting the distribution of pressure in a vehicle seat backrest |
US5651583A (en) * | 1992-09-29 | 1997-07-29 | Ameu Management Corp. | Seat back rest with an adjustment device for a flexible arching element for adjusting the convex curvature of the back rest |
US5791733A (en) * | 1996-02-09 | 1998-08-11 | Knoll, Inc. | Adjustable lumbar support |
US6062649A (en) * | 1998-03-03 | 2000-05-16 | Steelcase Development Inc. | Chair back construction |
US6079785A (en) * | 1999-01-12 | 2000-06-27 | Steelcase Development Inc. | Chair having adjustable lumbar support |
US6126237A (en) * | 1998-04-06 | 2000-10-03 | Ritterhouse; Keith I. | Adjustable cushioned headrest |
US6189972B1 (en) * | 1998-06-05 | 2001-02-20 | Teknion Furniture Systems Inc. | Lumbar support adjustment mechanism |
US6394546B1 (en) | 1997-10-24 | 2002-05-28 | Steelcase Development Corporation | Lumbar device |
US6419318B1 (en) | 2000-04-11 | 2002-07-16 | United Chair Company, Inc. | Chair having an adjustable lumbar mechanism |
US6471294B1 (en) | 1999-04-19 | 2002-10-29 | Steelcase Development Corporation | Adjustable lumbar support |
US6619739B2 (en) | 2001-03-01 | 2003-09-16 | L & P Property Management Company | Universal ergonomic support with self-contained actuator |
US6623076B2 (en) | 1993-06-17 | 2003-09-23 | Schukra-Gerätebau AG | Adjustment apparatus for a resiliently flexible support element of a back rest |
US6652028B2 (en) | 2001-11-02 | 2003-11-25 | L & P Property Management | Apparatus and method for lumbar support with variable apex |
US6652029B2 (en) | 2001-12-20 | 2003-11-25 | L & P Property Management Company | Unitized back plate and lumbar support |
US6666511B2 (en) | 1989-08-04 | 2003-12-23 | Schukra Geratebau Ag | Arching mechanism and method of use |
US6676214B2 (en) | 2001-11-16 | 2004-01-13 | L & P Property Management Company | Method and apparatus for lumbar support with integrated actuator housing |
US6758522B2 (en) | 2001-03-29 | 2004-07-06 | L&P Property Management Company | Apparatus and method for varying coefficients of friction in a variable apex back support |
US20040140705A1 (en) * | 2003-01-22 | 2004-07-22 | L & P Property Management Company | Automatically actuating ergonomic support system for a fold down seat |
US20040140700A1 (en) * | 2003-01-22 | 2004-07-22 | Mcmillen Robert J. | Fold down seat lumbar support apparatus and method |
US20040155501A1 (en) * | 2003-01-22 | 2004-08-12 | Mcmillen Robert J. | Fold down seat lumbar support apparatus and method |
US6779844B2 (en) | 2001-12-14 | 2004-08-24 | L&P Propety Maqnagement Company | Arching lumbar support with weight distribution surface |
US20050121958A1 (en) * | 2003-11-21 | 2005-06-09 | Tom Edwards | Chair with adjustable lumbar support |
US6908152B2 (en) | 2001-12-14 | 2005-06-21 | L & P Property Management Company | Push lumbar support with flexible pressure surface |
US6908153B2 (en) | 2002-12-02 | 2005-06-21 | L&P Property Management Company | Power lumbar support cable apparatus and method |
US6938955B2 (en) | 2001-10-11 | 2005-09-06 | L&P Property Management Co. | Power lumbar mechanism |
US7052087B2 (en) | 2002-12-09 | 2006-05-30 | L&P Property Management Company | Method and apparatus for a scissors ergonomic support |
US20060267382A1 (en) * | 2005-05-18 | 2006-11-30 | Schukra Of North America | Arm rest return |
US7237848B1 (en) * | 2004-09-03 | 2007-07-03 | Douglas Story | Back and internal organ supportive belt |
US20070236039A1 (en) * | 2004-02-06 | 2007-10-11 | L8 P Property Management Company | Drive Mechanism |
US20080284232A1 (en) * | 2005-01-12 | 2008-11-20 | L&P Swiss Holding Company | Coupling Unit and Adjusting Mechanism Using the Coupling Unit |
US7490899B2 (en) | 2006-03-30 | 2009-02-17 | Schukra Of North America | Combination lumbar-bolster system |
US20090096263A1 (en) * | 2005-01-12 | 2009-04-16 | L&P Swiss Holding Company | Lumbar Support Assembly and Corresponding Seat Structure |
US20090236887A1 (en) * | 2007-09-18 | 2009-09-24 | Shunjie Lu | Back support for a seat |
US7614696B2 (en) | 2006-12-11 | 2009-11-10 | Schukra Of North America | Lumbar system for climate seating |
US7841666B2 (en) | 2002-02-13 | 2010-11-30 | Herman Miller, Inc. | Back support structure |
US7878590B1 (en) * | 2006-12-22 | 2011-02-01 | B&B Innovators, Llc | Vertebral column support for mesh back chairs |
USD637423S1 (en) | 2010-04-13 | 2011-05-10 | Herman Miller, Inc. | Chair |
USD639091S1 (en) | 2010-04-13 | 2011-06-07 | Herman Miller, Inc. | Backrest |
US7984948B2 (en) | 2004-07-30 | 2011-07-26 | Schukra Of North America, Ltd. | Modular contour support apparatus |
US7984949B2 (en) | 2007-04-24 | 2011-07-26 | Schukra Of North America | Lumbar and bolster support for second row seat |
US7997650B2 (en) | 2008-02-22 | 2011-08-16 | Schukra Of North America | Constant pressure retreating lumbar system |
USD650206S1 (en) | 2010-04-13 | 2011-12-13 | Herman Miller, Inc. | Chair |
USD652657S1 (en) | 2010-04-13 | 2012-01-24 | Herman Miller, Inc. | Chair |
USD653061S1 (en) | 2010-04-13 | 2012-01-31 | Herman Miller, Inc. | Chair |
USD657166S1 (en) | 2010-04-13 | 2012-04-10 | Herman Miller, Inc. | Chair |
US8449037B2 (en) | 2010-04-13 | 2013-05-28 | Herman Miller, Inc. | Seating structure with a contoured flexible backrest |
US8740303B2 (en) * | 2012-06-22 | 2014-06-03 | Michael V. Halliday | Customizable chair with multipoint adjustment |
US9254042B2 (en) | 2012-06-22 | 2016-02-09 | Michael V. Halliday | Backrest member including an adjustable platform for use with a chair |
USD769028S1 (en) | 2015-03-03 | 2016-10-18 | Claire Little | Back support |
US20170231397A1 (en) * | 2014-10-13 | 2017-08-17 | Haworth, Inc. | Lumbar support for a chair, and chair having same |
TWI619627B (en) * | 2016-10-21 | 2018-04-01 | 致伸科技股份有限公司 | Automobile seat with warning function |
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US2550831A (en) * | 1949-07-01 | 1951-05-01 | Robert E Lingenfelter | Adjustable means for changing the contour of seat back rests |
Cited By (115)
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US3124389A (en) * | 1964-03-10 | mi kan | ||
US2843195A (en) * | 1956-01-25 | 1958-07-15 | Alvar E A Barvaeus | Self-adjusting back support |
US2894565A (en) * | 1957-05-17 | 1959-07-14 | Hubert R Crane | Contouring back rest for motor vehicle seats |
DE1169625B (en) * | 1958-06-11 | 1964-05-06 | Alvar Barvaeus | Backrest with a shaped surface made of elastically flexible length parts for seating or the like. |
DE1221772B (en) * | 1960-04-13 | 1966-07-28 | Dr Otto Alfred Becker | Seating |
US3106423A (en) * | 1960-11-21 | 1963-10-08 | Schwarz Johann | Back rest having an adjustable shaped element |
US3258259A (en) * | 1964-07-14 | 1966-06-28 | Volvo Ab | Seat backrest with tensioning means |
US3464754A (en) * | 1967-01-17 | 1969-09-02 | Rex Stroll O Chair Co | Orthopedic chair |
US3596990A (en) * | 1967-01-17 | 1971-08-03 | Louis Gottfried | Orthopedic chair |
US3463544A (en) * | 1968-04-22 | 1969-08-26 | Edward Froelich | Orthopedic seat back |
US3880463A (en) * | 1972-02-02 | 1975-04-29 | Ipeco Europe Ltd | Seat with back support |
US4350388A (en) * | 1976-04-21 | 1982-09-21 | Spina-Trac Ab | Backrests |
DE2733744A1 (en) * | 1976-04-21 | 1979-02-15 | Hans Wiener | Fixed or movable seat or bed backrest with adjustable curvature - has movable horizontal spacer between base plate and resilient support (SW 14.11.77) |
DE2736550A1 (en) * | 1977-08-13 | 1979-02-22 | Grammer Willibald Fa | DEVICE FOR ADJUSTING THE INCLINATION OF THE SEAT CUSHION IN A DRIVER'S SEAT, OFFICE CHAIR, SWIVEL CHAIR O.DGL. |
US4153294A (en) * | 1977-08-13 | 1979-05-08 | Messrs. Willibald Grammer | Apparatus for adjusting the inclination of seat upholstery in a driver's seat, office chair, revolving armchair or the like |
EP0006840A1 (en) * | 1978-06-23 | 1980-01-09 | Wilhelm Ing. Schuster | Flexible elastic support |
US4354709A (en) * | 1978-06-23 | 1982-10-19 | Wilhelm Schuster | Flexible elastic support |
US4452485A (en) * | 1978-06-23 | 1984-06-05 | Wilhelm Schuster | Flexible elastic support |
US4313637A (en) * | 1978-11-18 | 1982-02-02 | Uop Inc. | Seat having a movable lumbar support |
US4316631A (en) * | 1979-01-24 | 1982-02-23 | Steyr-Daimler-Puch Aktiengesellschaft | Backrest |
US4339150A (en) * | 1980-05-05 | 1982-07-13 | Gmsr Ortho Enterprises, Inc. | Back support construction |
DE3045809A1 (en) * | 1980-12-05 | 1982-07-08 | Fa. Willibald Grammer, 8450 Amberg | SEAT WITH DISC SUPPORT |
US4520800A (en) * | 1983-05-09 | 1985-06-04 | Standex International Corporation | Patient treatment table |
DE3324655A1 (en) * | 1983-07-08 | 1985-01-24 | Fa. Willibald Grammer, 8450 Amberg | SEAT WITH DISC SUPPORT |
US4601514A (en) * | 1983-07-08 | 1986-07-22 | Messrs. Willibald Grammer | Seat having an adjustable back support arrangement |
EP0153390A1 (en) * | 1983-08-15 | 1985-09-04 | Robin Morgenstern | Lumbosacral backrest with adjustable contour. |
EP0153390A4 (en) * | 1983-08-15 | 1986-01-28 | Robin Morgenstern | Lumbosacral backrest with adjustable contour. |
US4634178A (en) * | 1984-12-10 | 1987-01-06 | Carney Steven H | Adaptable seating device |
EP0291298A1 (en) * | 1987-05-13 | 1988-11-17 | Joseph Mary Jacobsen | Measuring apparatus |
US4993164A (en) * | 1987-05-13 | 1991-02-19 | Jacobsen Joseph M | Measuring device |
AU608839B2 (en) * | 1987-05-13 | 1991-04-18 | Joseph Mary Jacobsen | Measuring apparatus |
US4915447A (en) * | 1989-03-13 | 1990-04-10 | Sears Manufacturing Company | Vehicle seat with adjustable thigh support |
US6666511B2 (en) | 1989-08-04 | 2003-12-23 | Schukra Geratebau Ag | Arching mechanism and method of use |
US5217278A (en) * | 1991-03-13 | 1993-06-08 | Findlay Industries, Inc. | Mechanism for providing adjustable lumbar support in a seat |
DE4211094C1 (en) * | 1992-04-03 | 1993-06-03 | Grammer Ag, 8450 Amberg, De | Backrest support for vehicle seat - has flexible support plate over U=channel with two sets of shoulders braced on slidable wedge |
US5474358A (en) * | 1992-04-29 | 1995-12-12 | Youngflex S.A. | Seat arrangements providing adjustable lumbar support |
US5385531A (en) * | 1992-07-08 | 1995-01-31 | Eurokeyton S.A. | Massage robot for relaxation armchair |
US5651583A (en) * | 1992-09-29 | 1997-07-29 | Ameu Management Corp. | Seat back rest with an adjustment device for a flexible arching element for adjusting the convex curvature of the back rest |
US20040075320A1 (en) * | 1993-06-17 | 2004-04-22 | Schukra Geratebau Ag | Device for adjusting a flexible support element of a backrest |
US6883867B2 (en) | 1993-06-17 | 2005-04-26 | Schukra Geratebau Ag | Device for adjusting a flexible support element of a backrest |
US6623076B2 (en) | 1993-06-17 | 2003-09-23 | Schukra-Gerätebau AG | Adjustment apparatus for a resiliently flexible support element of a back rest |
WO1995004488A1 (en) * | 1993-08-05 | 1995-02-16 | Bosaro Biotech Inc. | Adjustable backrest |
US5624158A (en) * | 1993-08-05 | 1997-04-29 | Bosaro Biotech Inc. | Adjustable backrest |
US5553917A (en) * | 1993-08-05 | 1996-09-10 | Bosaro Biotech Inc. | Adjustable backrest |
US5344211A (en) * | 1993-08-05 | 1994-09-06 | Riyaz Adat | Adjustable backrest |
EP0698360A1 (en) | 1994-08-10 | 1996-02-28 | Austro Investment S.A. | Adjustable anatomical support, particularly lumbar support |
US5641205A (en) * | 1995-02-17 | 1997-06-24 | R. Schmidt Gmbh | Apparatus for adjusting the distribution of pressure in a vehicle seat backrest |
US5791733A (en) * | 1996-02-09 | 1998-08-11 | Knoll, Inc. | Adjustable lumbar support |
US5609394A (en) * | 1996-02-23 | 1997-03-11 | Ligon Brothers Manufacturing Company | Four-way lumbar support |
US6394546B1 (en) | 1997-10-24 | 2002-05-28 | Steelcase Development Corporation | Lumbar device |
US6099076A (en) * | 1998-03-03 | 2000-08-08 | Steelcase Development Inc. | Chair back construction |
US6062649A (en) * | 1998-03-03 | 2000-05-16 | Steelcase Development Inc. | Chair back construction |
US6126237A (en) * | 1998-04-06 | 2000-10-03 | Ritterhouse; Keith I. | Adjustable cushioned headrest |
US6260921B1 (en) * | 1998-06-05 | 2001-07-17 | Teknion Furniture Systems, Inc. | Lumbar support adjustment mechanism |
US6189972B1 (en) * | 1998-06-05 | 2001-02-20 | Teknion Furniture Systems Inc. | Lumbar support adjustment mechanism |
US6079785A (en) * | 1999-01-12 | 2000-06-27 | Steelcase Development Inc. | Chair having adjustable lumbar support |
WO2000041596A1 (en) * | 1999-01-12 | 2000-07-20 | Steelcase Inc. | Chair having adjustable lumbar support |
US6471294B1 (en) | 1999-04-19 | 2002-10-29 | Steelcase Development Corporation | Adjustable lumbar support |
US6419318B1 (en) | 2000-04-11 | 2002-07-16 | United Chair Company, Inc. | Chair having an adjustable lumbar mechanism |
US6619739B2 (en) | 2001-03-01 | 2003-09-16 | L & P Property Management Company | Universal ergonomic support with self-contained actuator |
US7077476B2 (en) | 2001-03-01 | 2006-07-18 | L&P Property Management Company | Universal ergonomic support with self-contained actuator |
US20050035637A1 (en) * | 2001-03-01 | 2005-02-17 | Mcmillen Robert James | Universal ergonomic support with self-contained actuator |
US6758522B2 (en) | 2001-03-29 | 2004-07-06 | L&P Property Management Company | Apparatus and method for varying coefficients of friction in a variable apex back support |
US6938955B2 (en) | 2001-10-11 | 2005-09-06 | L&P Property Management Co. | Power lumbar mechanism |
US20040245824A1 (en) * | 2001-11-02 | 2004-12-09 | L & P Property Management Company | Apparatus and method for lumbar support with variable apex |
US6652028B2 (en) | 2001-11-02 | 2003-11-25 | L & P Property Management | Apparatus and method for lumbar support with variable apex |
US6676214B2 (en) | 2001-11-16 | 2004-01-13 | L & P Property Management Company | Method and apparatus for lumbar support with integrated actuator housing |
US6908152B2 (en) | 2001-12-14 | 2005-06-21 | L & P Property Management Company | Push lumbar support with flexible pressure surface |
US6779844B2 (en) | 2001-12-14 | 2004-08-24 | L&P Propety Maqnagement Company | Arching lumbar support with weight distribution surface |
US6652029B2 (en) | 2001-12-20 | 2003-11-25 | L & P Property Management Company | Unitized back plate and lumbar support |
US7841666B2 (en) | 2002-02-13 | 2010-11-30 | Herman Miller, Inc. | Back support structure |
US6908153B2 (en) | 2002-12-02 | 2005-06-21 | L&P Property Management Company | Power lumbar support cable apparatus and method |
US7052087B2 (en) | 2002-12-09 | 2006-05-30 | L&P Property Management Company | Method and apparatus for a scissors ergonomic support |
US20040140700A1 (en) * | 2003-01-22 | 2004-07-22 | Mcmillen Robert J. | Fold down seat lumbar support apparatus and method |
US20040140705A1 (en) * | 2003-01-22 | 2004-07-22 | L & P Property Management Company | Automatically actuating ergonomic support system for a fold down seat |
US20040155501A1 (en) * | 2003-01-22 | 2004-08-12 | Mcmillen Robert J. | Fold down seat lumbar support apparatus and method |
US7137664B2 (en) | 2003-01-22 | 2006-11-21 | L&P Property Management Company | Automatically actuating ergonomic support system for a fold down seat |
US7140680B2 (en) | 2003-01-22 | 2006-11-28 | L&P Property Management Company | Fold down seat lumbar support apparatus and method |
US6905170B2 (en) | 2003-01-22 | 2005-06-14 | L & P Property Management Company | Fold down seat lumbar support apparatus and method |
US20050121958A1 (en) * | 2003-11-21 | 2005-06-09 | Tom Edwards | Chair with adjustable lumbar support |
US6981743B2 (en) | 2003-11-21 | 2006-01-03 | Hni Technologies Inc. | Chair with adjustable lumbar support |
US20070236039A1 (en) * | 2004-02-06 | 2007-10-11 | L8 P Property Management Company | Drive Mechanism |
US7775595B2 (en) | 2004-02-06 | 2010-08-17 | Schukra Of North America | Drive mechanism |
US8382204B2 (en) | 2004-07-30 | 2013-02-26 | Schukra of North America Co. | Modular contour support apparatus |
US7984948B2 (en) | 2004-07-30 | 2011-07-26 | Schukra Of North America, Ltd. | Modular contour support apparatus |
US7237848B1 (en) * | 2004-09-03 | 2007-07-03 | Douglas Story | Back and internal organ supportive belt |
US20080284232A1 (en) * | 2005-01-12 | 2008-11-20 | L&P Swiss Holding Company | Coupling Unit and Adjusting Mechanism Using the Coupling Unit |
US8544953B2 (en) | 2005-01-12 | 2013-10-01 | L&P Swiss Holding Ag | Lumbar support assembly and corresponding seat structure |
US7690726B2 (en) | 2005-01-12 | 2010-04-06 | L&P Swiss Holding Company | Coupling unit and adjusting mechanism using the coupling unit |
US20090096263A1 (en) * | 2005-01-12 | 2009-04-16 | L&P Swiss Holding Company | Lumbar Support Assembly and Corresponding Seat Structure |
US7841661B2 (en) | 2005-01-12 | 2010-11-30 | L&P Swiss Holding Company | Lumbar support assembly and corresponding seat structure |
US20060267382A1 (en) * | 2005-05-18 | 2006-11-30 | Schukra Of North America | Arm rest return |
US7490899B2 (en) | 2006-03-30 | 2009-02-17 | Schukra Of North America | Combination lumbar-bolster system |
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US7878590B1 (en) * | 2006-12-22 | 2011-02-01 | B&B Innovators, Llc | Vertebral column support for mesh back chairs |
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US8449037B2 (en) | 2010-04-13 | 2013-05-28 | Herman Miller, Inc. | Seating structure with a contoured flexible backrest |
US9301615B2 (en) | 2010-04-13 | 2016-04-05 | Herman Miller, Inc. | Seating structure with a contoured flexible backrest |
USD653061S1 (en) | 2010-04-13 | 2012-01-31 | Herman Miller, Inc. | Chair |
USD657166S1 (en) | 2010-04-13 | 2012-04-10 | Herman Miller, Inc. | Chair |
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US8740303B2 (en) * | 2012-06-22 | 2014-06-03 | Michael V. Halliday | Customizable chair with multipoint adjustment |
US9254042B2 (en) | 2012-06-22 | 2016-02-09 | Michael V. Halliday | Backrest member including an adjustable platform for use with a chair |
US20170231397A1 (en) * | 2014-10-13 | 2017-08-17 | Haworth, Inc. | Lumbar support for a chair, and chair having same |
US10045624B2 (en) * | 2014-10-13 | 2018-08-14 | Haworth, Inc. | Lumbar support for a chair, and chair having same |
USD769028S1 (en) | 2015-03-03 | 2016-10-18 | Claire Little | Back support |
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US11369505B2 (en) * | 2019-10-11 | 2022-06-28 | Charles Wolfer | Lumbar traction device |
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