US2828801A - Resilient, yieldable seat - Google Patents

Resilient, yieldable seat Download PDF

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Publication number
US2828801A
US2828801A US193220A US19322050A US2828801A US 2828801 A US2828801 A US 2828801A US 193220 A US193220 A US 193220A US 19322050 A US19322050 A US 19322050A US 2828801 A US2828801 A US 2828801A
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Prior art keywords
seat
resilient
holder
support
figures
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Expired - Lifetime
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US193220A
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Papst Hermann
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
    • B62J1/00—Saddles or other seats for cycles; Arrangement thereof; Component parts
    • B62J1/02—Saddles resiliently mounted on the frame; Equipment therefor, e.g. springs
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
    • A47C3/02—Rocking chairs
    • A47C3/021—Rocking chairs having elastic frames
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
    • A47C3/02—Rocking chairs
    • A47C3/025—Rocking chairs with seat, or seat and back-rest unit elastically or pivotally mounted in a rigid base frame
    • A47C3/0252—Rocking chairs with seat, or seat and back-rest unit elastically or pivotally mounted in a rigid base frame connected only by an elastic member positioned between seat and base frame
    • 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
    • A47C7/44—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame
    • A47C7/445—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame with bar or leaf springs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
    • B62J1/00—Saddles or other seats for cycles; Arrangement thereof; Component parts
    • B62J1/02—Saddles resiliently mounted on the frame; Equipment therefor, e.g. springs
    • B62J1/04—Saddles capable of swinging about a horizontal pivot

Definitions

  • the instant invention relates to resilient, yieldable seats, in particular for use with movable supports such as bicycles, motor cycles, tractors, etc., of which the resiliency is adapted to protect the person sitting thereon from shocks.
  • movable supports such as bicycles, motor cycles, tractors, etc.
  • the resiliency is adapted to protect the person sitting thereon from shocks.
  • the seat be capable of swinging in such manner vertically are parallel to each other and the original seat position while laterally undisplaced.
  • Such parallel displacement of. the seat can be attained according to the instant invention in a considerably simpler manner by using a seat support consisting of superposed leaf springs clamped at one end to the seat and at the other end to the seat holder.
  • This seat support composed of leaf springs simultaneously constitutes the resilient means and the guide means, and provides considerable simplification of the seating arrangement.
  • the seat support, or the leaf springs constituting the seat support may be, if desired, so dimensioned that in the case of a unilateral load thereon a certain twisting or torsion is permitted.
  • the leaf spring type of seat support further has the advantage of very springy deflection so that the load on the seat and the stress imposed by shocks may vary over wide limits.
  • Figure 1 is an elevational view of a bicycle saddle supported by the resilient means of my invention
  • Figure 2 is a sectional view of a different embodiment in which the resilient means is provided with variable contact guide channels;
  • Figure 3 is an elevational view of a chair of which the seat is supported by the resilient means of my invention
  • Figure 4 is an elevational view of a driving seat of a tractor, for example, supported by still another modified form of the resilient seat supporting means of my invention
  • Figure 5 discloses in elevation a chair of which the seat is supported by still another embodiment of the resilient seat supporting means of my invention
  • Figures 6 and 6a are a plan and a sectional view respectively of one form of my resilient seat supporting means adapted to be incorporated in any of the chair embodiments of Figures 1 through 5;
  • Figures 7 and 7a are a plan and a sectional view respectively of another form of my resilient seat supthat the successive positions of the seat 2,828,801 Patented Apr. 1, 1958 porting means adapted similarly to be incorporated in any of the embodiments of Figures 1 through 5.
  • the seat 1 is secured to the seat holder 2 by means of a seat support 3, the latter consisting of a plurality, for example four as shown in Figures 1 to 3, of leaf springs 4.
  • the seat support 3 is fixedly clamped at its one end to the seat 1 and at its other end to the seat holder 2 so that when a load is applied to the seat, or a shock transmitted thereto, the seat will be displaced vertically to successive positions parallel to each other and to the plane of the original position.
  • the seat is designed as a saddle and the seat holder 2 secured to the frame 5 of a bicycle.
  • Seat supporting means 3 comprises a stack of four flat leaf springs 4 clamped at its respective ends by screws 6 and 7 threaded into formed brackets 8 and 9 which clamp the end regions of the springs transversely to each other.
  • the formed brackets 8 and 9 are also fitted and clamped to seat 1 and seat holder 2 respectively, in such manner that in the lengthwise direction the supporting means in Figure 1 is substantially horizontal.
  • the saddle arrangement shown in Figure 2 dilfers from that shown in Figure 1 in that the seat holder 12 has an upper curved surface 10, to the lower and forward region of which one end of spring supporting means 3, identical with that of Figure 1, or those of Figures 6 and 7, is rigidly attached by the formed clamp 16 and bolts 17.
  • the other end of the supporting means 3 is rigidly attached by a formed bracket 19 and bolts 20 to the rear undersurface of seat 21.
  • the undersurface of seat 21 is provided with a curved surface having a groove 11 extending from a front to a rear region thereof, and adapted to engage an increasing portion of the upper adjacent surface of the supporting means as the seat is deflected downwardly, thus eliminating the possibility of lateral displacement of the supporting means.
  • the seat 31 forms part of a chair and carries a back-rest 32.
  • the seat holder 33 serves as a leg for the chair and is provided with a foot 34.
  • the seat illustrated in Figure 4 is intended for a fixed arrangement such as on a tractor.
  • the seat support 43 comprises three leaf springs of which the two outer ones, 44 and 45, are of spring metal while the intermediate spring 46 is of wood.
  • the seat support 43 is arranged slantingly so that the seat 41 has approximately the height of a normal chair seat above the seat holder 42, the lower end of the supporting means 43 being rigidly clamped to the seat holder by, for example, a plurality of bolts and nuts 47 while the upper end is rigidly clamped to a rear lower portion of the seat 41 by bolts 48.
  • the chair shown in Figure 5 has a seat support 50 comprising two wooden springs, 51 and 52, directly secured to he frame of seat 53 and to base plate 54 serving as the seat holder.
  • the thickness of springs 51 and 52 continuously decreases in the direction toward the midlength region of the seat support, thereby permitting of great deflection without affecting the strength of the seat support.
  • the reduction in cross section of the leaf springs constituting the spring supports may, however, differ from that shown in Figure 5, alternative modes being shown in Figures 6 and 6a, and 7 and 7a.
  • the seat support .ileafisprings :4 of figures-16am 6a are cutout in"the form -of a vrhomb so that the .springs have ,but small area cross-sections at their ,midlength regions, as shown by the hatched areas in Figure 6a.
  • the leaf springs 4" of Figures 7iand 7a are ;cut :outzatstheir-zmidlengtharegion in suchzmanner ;that the widthaof :thmsprings ⁇ decreases atowards their ;midlength region,;'.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Seats For Vehicles (AREA)
  • Chairs Characterized By Structure (AREA)

Description

April 1, 1958 H. PAPST 2,828,801
RESILIENT, YIELDABLE SIIEAT Fil'e'd Oct. 31. 1950 w VENTOR 8y HERMANN PAPST ATTORNEY United States Patent 2,828,801 7 RESILIENT, YIELDABLE SEAT Hermann Papst, St. Georgen, Schwarzwald, Germany Application October31, 1950, Serial No. 193,220 Claims priority, application Germany October 31, 1949 1 Claim. (Cl. 1555.21)
The instant invention relates to resilient, yieldable seats, in particular for use with movable supports such as bicycles, motor cycles, tractors, etc., of which the resiliency is adapted to protect the person sitting thereon from shocks. To obtain eflicient shock absorbing action, it is important that the seat be capable of swinging in such manner vertically are parallel to each other and the original seat position while laterally undisplaced. To this end it has already been proposed to provide a resilient support for the seat and to equip the latter with guide means permitting parallel displacement of the seat.
Such parallel displacement of. the seat can be attained according to the instant invention in a considerably simpler manner by using a seat support consisting of superposed leaf springs clamped at one end to the seat and at the other end to the seat holder. This seat support composed of leaf springs simultaneously constitutes the resilient means and the guide means, and provides considerable simplification of the seating arrangement. The seat support, or the leaf springs constituting the seat support may be, if desired, so dimensioned that in the case of a unilateral load thereon a certain twisting or torsion is permitted. Thus there is the possibility of the seat taking a slanting position when unilaterally loaded and adapting itself to the load without the stability of the seat support in the direction of the seating area necessarily being impaired. The leaf spring type of seat support further has the advantage of very springy deflection so that the load on the seat and the stress imposed by shocks may vary over wide limits.
Further features of the invention will appear from the following descriptions of some illustrative embodiments of the resilient seat supporting means according to the invention taken in connection with the accompanying drawing, in which:
Figure 1 is an elevational view of a bicycle saddle supported by the resilient means of my invention;
Figure 2 is a sectional view of a different embodiment in which the resilient means is provided with variable contact guide channels;
Figure 3 is an elevational view of a chair of which the seat is supported by the resilient means of my invention;
Figure 4 is an elevational view of a driving seat of a tractor, for example, supported by still another modified form of the resilient seat supporting means of my invention;
Figure 5 discloses in elevation a chair of which the seat is supported by still another embodiment of the resilient seat supporting means of my invention;
Figures 6 and 6a are a plan and a sectional view respectively of one form of my resilient seat supporting means adapted to be incorporated in any of the chair embodiments of Figures 1 through 5; and
Figures 7 and 7a are a plan and a sectional view respectively of another form of my resilient seat supthat the successive positions of the seat 2,828,801 Patented Apr. 1, 1958 porting means adapted similarly to be incorporated in any of the embodiments of Figures 1 through 5.
In the figures of the drawing like numerals denote like parts. All embodiments of the invention have in commom that the seat 1 is secured to the seat holder 2 by means of a seat support 3, the latter consisting of a plurality, for example four as shown in Figures 1 to 3, of leaf springs 4. The seat support 3 is fixedly clamped at its one end to the seat 1 and at its other end to the seat holder 2 so that when a load is applied to the seat, or a shock transmitted thereto, the seat will be displaced vertically to successive positions parallel to each other and to the plane of the original position. i
In Figure 1 the seat is designed as a saddle and the seat holder 2 secured to the frame 5 of a bicycle. Seat supporting means 3 comprises a stack of four flat leaf springs 4 clamped at its respective ends by screws 6 and 7 threaded into formed brackets 8 and 9 which clamp the end regions of the springs transversely to each other. The formed brackets 8 and 9 are also fitted and clamped to seat 1 and seat holder 2 respectively, in such manner that in the lengthwise direction the supporting means in Figure 1 is substantially horizontal.
The saddle arrangement shown in Figure 2 dilfers from that shown in Figure 1 in that the seat holder 12 has an upper curved surface 10, to the lower and forward region of which one end of spring supporting means 3, identical with that of Figure 1, or those of Figures 6 and 7, is rigidly attached by the formed clamp 16 and bolts 17. The other end of the supporting means 3 is rigidly attached by a formed bracket 19 and bolts 20 to the rear undersurface of seat 21. The undersurface of seat 21 is provided with a curved surface having a groove 11 extending from a front to a rear region thereof, and adapted to engage an increasing portion of the upper adjacent surface of the supporting means as the seat is deflected downwardly, thus eliminating the possibility of lateral displacement of the supporting means.
In the embodiment of Figure 3, the seat 31 forms part of a chair and carries a back-rest 32. The seat holder 33 serves as a leg for the chair and is provided with a foot 34. A seat supporting means 3, identical with that of Figures 1, 2, 6 or 7, similarly has its one end rigidly clamped to holder 33 and its other end rigidly clamped to a lower portion of the seat 31 to the rear of the holder and in the direction foot 34 extends from the holder.
The seat illustrated in Figure 4 is intended for a fixed arrangement such as on a tractor. The seat support 43 comprises three leaf springs of which the two outer ones, 44 and 45, are of spring metal while the intermediate spring 46 is of wood. The seat support 43 is arranged slantingly so that the seat 41 has approximately the height of a normal chair seat above the seat holder 42, the lower end of the supporting means 43 being rigidly clamped to the seat holder by, for example, a plurality of bolts and nuts 47 while the upper end is rigidly clamped to a rear lower portion of the seat 41 by bolts 48.
The chair shown in Figure 5 has a seat support 50 comprising two wooden springs, 51 and 52, directly secured to he frame of seat 53 and to base plate 54 serving as the seat holder. The thickness of springs 51 and 52 continuously decreases in the direction toward the midlength region of the seat support, thereby permitting of great deflection without affecting the strength of the seat support.
The reduction in cross section of the leaf springs constituting the spring supports may, however, differ from that shown in Figure 5, alternative modes being shown in Figures 6 and 6a, and 7 and 7a. The seat support .ileafisprings :4 of figures-16am 6a are cutout in"the form -of a vrhomb so that the .springs have ,but small area cross-sections at their ,midlength regions, as shown by the hatched areas in Figure 6a. The leaf springs 4" of Figures 7iand 7a are ;cut :outzatstheir-zmidlengtharegion in suchzmanner ;that the widthaof :thmsprings \decreases atowards their ;midlength region,;'. the meat; support assembly being :such ,that the Qlli Qlli PlOIiiOllS of.successive wsuperposed leaf springs :are at; opposite: sides, as made clear'particulariyr in Figurela byztheihatched lines of the cross-sectional areas :acmidlength-tm seat; support.
It may be convenient to provide :Qbetweenthe leaf springs of any gembodiment ,of .the seat: supporteofamy invention highly gfiexible intermediate layers..-made :of paper, plastics, rubber, :or, :thedike.
Whatl claim is:
In combination .with a :seat and a :seat ihO1d1',. 8. :lami- .nated spring bar. connecting tthei seat awith thea-seat holder and comprising "a plurality of leaf -springs superposed one cn the other, means clampingrthe :spring barsrigidly at its respective ends to thesseat and to 'the'holder so that fthe springs of the spring bar are pressed-against each other and are identically deformed -both when a load is applied to the seator a shock transmittedthereto withoutchange in therelative positions'ofthe-clamped regions of the spring bar, the seat having a lower surface in the form of a first longitudinal curvature adapted on depression of the seat to make contact with an increasing portion of the upper surface of the spring bar, and the holder having an upper surface in the form of a second longitudinal curvature adapted on depression of the seat to make contact with an increasing portion of the lower surface areasof the spring bar the magnitude of each increasing portion depending on the magnitude of the depression.
ReferencesCite'd in'the'file of this patent UNITED STATES PATENTS 640,373 Fleming J an. 2, 1900 1,122,691 Cobb Dec. 29, 1914 1,998,508 Kappenberg Apr. 23, 1935 2,058,076 .,Glascodine .Oct. 20,. 19-36 20 12,537,071 "Lukins J an. 9, '1951 25971299 'Crites et a1. J ,May '20, 1-952 :FQREIGN :RATENTS 113,345 Great Briteiin Feb.21,"1'18 655,057 France Dec. 8,1928
US193220A 1949-10-31 1950-10-31 Resilient, yieldable seat Expired - Lifetime US2828801A (en)

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Application Number Priority Date Filing Date Title
DE2828801X 1949-10-31

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US193220A Expired - Lifetime US2828801A (en) 1949-10-31 1950-10-31 Resilient, yieldable seat

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US (1) US2828801A (en)
AT (1) AT179204B (en)
BE (1) BE499090A (en)
CH (1) CH285979A (en)
DK (1) DK76195C (en)
FR (1) FR1028921A (en)
GB (1) GB680504A (en)

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3390873A (en) * 1964-03-31 1968-07-02 Lord Corp Spring
US4119343A (en) * 1977-01-17 1978-10-10 Kroehler Mfg. Co. Platform rocker structure
US4129290A (en) * 1976-05-14 1978-12-12 Popper Engineering Ltd. Compression and tension spring
US4141530A (en) * 1976-09-29 1979-02-27 Minnesota Mining And Manufacturing Company Platform rocking chair springs
US4156391A (en) * 1977-06-27 1979-05-29 Reppisch-Werke GmbH Height adjustable table
US4340250A (en) * 1976-09-29 1982-07-20 Minnesota Mining And Manufacturing Company Platform rocking chair springs
US4549764A (en) * 1983-09-14 1985-10-29 K. L. Spring & Stamping Corporation Flexible chair back
US4620688A (en) * 1984-01-06 1986-11-04 Bechtel International Corporation Energy absorbing apparatus for piping system and the like
US4934724A (en) * 1989-04-07 1990-06-19 Allsop, Inc. Combination beam seat support
US5029888A (en) * 1989-04-07 1991-07-09 Allsop, Inc. Bicycle seat support
US5240268A (en) * 1989-04-07 1993-08-31 Allsop, Inc. Bicycle
US20060061163A1 (en) * 2004-09-15 2006-03-23 Oliver Wang Swivel rocker chair and assembly
US20060138837A1 (en) * 2002-12-20 2006-06-29 Stokke As Mobile joint suitable for a sitting device
US7104532B1 (en) * 2003-02-20 2006-09-12 Johnson Christopher L Shock absorbing assembly for a bicycle
US20100207437A1 (en) * 2005-09-15 2010-08-19 Agio International Company, Ltd. Swivel rocker chair and assembly
US20110210231A1 (en) * 2010-02-26 2011-09-01 Specialized Bicycle Components, Inc. Bicycle seat with resilient support
US20130228668A1 (en) * 2010-02-26 2013-09-05 Specialized Bicycle Components, Inc. Bicycle seat with resilient support
US20150183493A1 (en) * 2012-07-04 2015-07-02 Paul Francis Zwaan Shock mitigation apparatus
EP3064091A3 (en) * 2015-03-05 2016-10-26 A-Dec, Inc. Seat assembly for task-oriented seating
US9493203B2 (en) 2014-03-04 2016-11-15 Lyle Portz Bicycle seat
US20180235367A1 (en) * 2017-02-22 2018-08-23 Aeris Gmbh Active dynamic seating furniture
US10682933B2 (en) 2018-05-16 2020-06-16 Eric Bischoff Adjustable seat suspension assembly

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4595234A (en) * 1984-10-19 1986-06-17 Kjersem Jens A Rocking chair
DE9003589U1 (en) * 1990-03-28 1991-07-25 Fritz Hansens Eft. A/S, Alleroed, Dk
DE19726019C1 (en) * 1997-06-19 1998-10-15 Spieth Gymnastic Gmbh Springboard for gymnastics

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US640373A (en) * 1899-02-18 1900-01-02 John C Fleming Bicycle-saddle.
US1122691A (en) * 1914-02-05 1914-12-29 Mary Elizabeth Johnson Resilient seat-support.
GB113345A (en) * 1917-03-07 1918-02-21 Granville Eastwood Bradshaw Improvements in Springs.
FR655057A (en) * 1928-06-01 1929-04-15 Saddle for all vehicles, especially cycles and motorcycles
US1998508A (en) * 1933-11-02 1935-04-23 Kappenberg August Juvenile amusement device
US2058076A (en) * 1934-04-26 1936-10-20 Glascodine Richard Thomson Steel beam or spring
US2537071A (en) * 1945-07-30 1951-01-09 Charles F Lukins Chair having spring supported seat and back
US2597299A (en) * 1947-05-27 1952-05-20 Standard Steel Spring Co Spring structure

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US640373A (en) * 1899-02-18 1900-01-02 John C Fleming Bicycle-saddle.
US1122691A (en) * 1914-02-05 1914-12-29 Mary Elizabeth Johnson Resilient seat-support.
GB113345A (en) * 1917-03-07 1918-02-21 Granville Eastwood Bradshaw Improvements in Springs.
FR655057A (en) * 1928-06-01 1929-04-15 Saddle for all vehicles, especially cycles and motorcycles
US1998508A (en) * 1933-11-02 1935-04-23 Kappenberg August Juvenile amusement device
US2058076A (en) * 1934-04-26 1936-10-20 Glascodine Richard Thomson Steel beam or spring
US2537071A (en) * 1945-07-30 1951-01-09 Charles F Lukins Chair having spring supported seat and back
US2597299A (en) * 1947-05-27 1952-05-20 Standard Steel Spring Co Spring structure

Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3390873A (en) * 1964-03-31 1968-07-02 Lord Corp Spring
US4129290A (en) * 1976-05-14 1978-12-12 Popper Engineering Ltd. Compression and tension spring
US4141530A (en) * 1976-09-29 1979-02-27 Minnesota Mining And Manufacturing Company Platform rocking chair springs
US4340250A (en) * 1976-09-29 1982-07-20 Minnesota Mining And Manufacturing Company Platform rocking chair springs
US4119343A (en) * 1977-01-17 1978-10-10 Kroehler Mfg. Co. Platform rocker structure
US4156391A (en) * 1977-06-27 1979-05-29 Reppisch-Werke GmbH Height adjustable table
US4549764A (en) * 1983-09-14 1985-10-29 K. L. Spring & Stamping Corporation Flexible chair back
US4620688A (en) * 1984-01-06 1986-11-04 Bechtel International Corporation Energy absorbing apparatus for piping system and the like
US4934724A (en) * 1989-04-07 1990-06-19 Allsop, Inc. Combination beam seat support
US5029888A (en) * 1989-04-07 1991-07-09 Allsop, Inc. Bicycle seat support
US5240268A (en) * 1989-04-07 1993-08-31 Allsop, Inc. Bicycle
US5382038A (en) * 1989-04-07 1995-01-17 Allsop, Inc. Shock absorber for a vehicle
US7434880B2 (en) * 2002-12-20 2008-10-14 Varier Furniture As Mobile joint suitable for a sitting device
US20060138837A1 (en) * 2002-12-20 2006-06-29 Stokke As Mobile joint suitable for a sitting device
US7104532B1 (en) * 2003-02-20 2006-09-12 Johnson Christopher L Shock absorbing assembly for a bicycle
US20060061163A1 (en) * 2004-09-15 2006-03-23 Oliver Wang Swivel rocker chair and assembly
US20100207437A1 (en) * 2005-09-15 2010-08-19 Agio International Company, Ltd. Swivel rocker chair and assembly
US7841660B2 (en) 2005-09-15 2010-11-30 Agio International Company Limited Swivel rocker chair and assembly
US20110210231A1 (en) * 2010-02-26 2011-09-01 Specialized Bicycle Components, Inc. Bicycle seat with resilient support
US20130228668A1 (en) * 2010-02-26 2013-09-05 Specialized Bicycle Components, Inc. Bicycle seat with resilient support
US8678339B2 (en) * 2010-02-26 2014-03-25 Specialized Bicycle Components, Inc. Bicycle seat with resilient support
US20150183493A1 (en) * 2012-07-04 2015-07-02 Paul Francis Zwaan Shock mitigation apparatus
US9493203B2 (en) 2014-03-04 2016-11-15 Lyle Portz Bicycle seat
EP3064091A3 (en) * 2015-03-05 2016-10-26 A-Dec, Inc. Seat assembly for task-oriented seating
US9861203B2 (en) 2015-03-05 2018-01-09 A-Dec, Inc. Seat assembly for task-oriented seating
US10104968B2 (en) 2015-03-05 2018-10-23 A-Dec, Inc. Seat assembly for task-oriented seating
US20180235367A1 (en) * 2017-02-22 2018-08-23 Aeris Gmbh Active dynamic seating furniture
US10531739B2 (en) * 2017-02-22 2020-01-14 Aeris Gmbh Active dynamic seating furniture
US10682933B2 (en) 2018-05-16 2020-06-16 Eric Bischoff Adjustable seat suspension assembly

Also Published As

Publication number Publication date
DK76195C (en) 1953-08-03
CH285979A (en) 1952-09-30
FR1028921A (en) 1953-05-28
BE499090A (en) 1950-11-14
AT179204B (en) 1954-07-26
GB680504A (en) 1952-10-08

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