FR2562003A1 - Seat cushion adjusting device, especially in a motor vehicle - Google Patents

Seat cushion adjusting device, especially in a motor vehicle Download PDF

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Publication number
FR2562003A1
FR2562003A1 FR8404867A FR8404867A FR2562003A1 FR 2562003 A1 FR2562003 A1 FR 2562003A1 FR 8404867 A FR8404867 A FR 8404867A FR 8404867 A FR8404867 A FR 8404867A FR 2562003 A1 FR2562003 A1 FR 2562003A1
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France
Prior art keywords
seat
front portion
lever
transverse
seat cushion
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Granted
Application number
FR8404867A
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French (fr)
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FR2562003B1 (en
Inventor
Christian Prion
Roger Kierzek
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Automobiles Peugeot SA
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Automobiles Peugeot SA
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Publication date
Application filed by Automobiles Peugeot SA filed Critical Automobiles Peugeot SA
Priority to FR8404867A priority Critical patent/FR2562003B1/en
Publication of FR2562003A1 publication Critical patent/FR2562003A1/en
Application granted granted Critical
Publication of FR2562003B1 publication Critical patent/FR2562003B1/en
Expired legal-status Critical Current

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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
    • B60N2/62—Thigh-rests

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  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Seats For Vehicles (AREA)

Abstract

Height adjusting device of the front portion 2 of a seat cushion 1 in particular of a motor vehicle seat, comprising a support 3 connected to a lower reinforcement of the seat by a transverse articulation and capable of interacting with an adjusting mechanism which can be actuated by the occupant of the seat by means of a button or of a lever for manoeuvring arranged near to the seat cushion 1, characterised in that at least one spring 5 is interposed between the support 3 of the front portion 2 and a pivoting piece 11 which is articulated to the reinforcement of the seat and capable of interacting with an adjustment member 12 which can be actuated by the aforementioned button or lever. This arrangement allows the occupant of the seat to slightly lower the front portion 2 of the cushion 1 when he stretches one leg out, for example towards a pedal of the vehicle, and thus eliminates any discomfort in this movement.

Description

L'invention est relative à un dispositif de reglage en hauteur de la portion avant d'un coussin d'assise équipant certains sièges de véhicules automobiles. cette portion avant étant légèrement mobile par rapport à la partie centrale du coussin. Un tel réglage permet de modifier légèrement la forme du coussin. l'adaptant plus ou moins à la morphologie de l'utilisateur du siège. The invention relates to a device for adjusting the height of the front portion of a seat cushion fitted to certain seats of motor vehicles. this front portion being slightly movable relative to the central part of the cushion. Such an adjustment makes it possible to slightly modify the shape of the cushion. adapting it more or less to the morphology of the seat user.

Cette portion extreme comperte en général un élément de support relié à l'armature du siège par une articulation transversale, et qui coopère avec un me- canisme de réglage actionnable par l'occupant du singe au moyen d'un bouton ou d'un levier de manoeuvre dispose près du coussin d'assise. This extreme portion generally includes a support element connected to the frame of the seat by a transverse articulation, and which cooperates with an adjustment mechanism which can be actuated by the occupant of the monkey by means of a button or a lever. maneuver has near the seat cushion.

Ce réglage ne donne pae toujours satisfaction, en particulier lorsque l'occupant du siège doit déplacer notablement ses jambes en hauteur pour actionner une pédale de frein ou d embrayage du véhi- cule. En effet. si la portion extrême avant du coussin est réglée en position relativement haute afin de procurer un appui confortable pour les ambres au repos. This adjustment is not always satisfactory, in particular when the occupant of the seat has to move his legs appreciably higher in order to actuate a brake or clutch pedal of the vehicle. Indeed. if the extreme front portion of the cushion is adjusted to a relatively high position in order to provide comfortable support for ambers at rest.

elle constitue une gêne pour allonger et~abaisser l'une de celleseci vers la pédale correspondante.it constitutes a discomfort for lengthening and lowering one of the latter towards the corresponding pedal.

L'invention a pour but d'éliminer cet in convénient et de permettre à ladite portion extrême de s'abaisser légèrement, par rapport à sa position de repos choisie, lorsque l'occupant du siège allonge une jambe. notamment pour actionner une pédale. The invention aims to eliminate this inconvenience and allow said end portion to lower slightly, compared to its chosen rest position, when the occupant of the seat extends a leg. especially to operate a pedal.

Conformément à l'invention, au moins un ressort est interposé entre le support de la portion avant et une piece pivotante qui est articulée sur l'armature du siège et susceptible de coopérer avec un organe de reglage actionnable par le bouton ou le levier précités.  According to the invention, at least one spring is interposed between the support of the front portion and a pivoting piece which is articulated on the seat frame and capable of cooperating with an adjustment member actuable by the above-mentioned button or lever.

La présence du ou des ressorts permet d'abaisser legèrement la portion avant du coussin d'assise, que celle-ci soit en position haute oÇ basse. The presence of the spring or springs makes it possible to slightly lower the front portion of the seat cushion, whether this is in the high or low position.

Selon d'autres caractéristiques avantagffis.s de l'invention
- ledit support avant est en appui sur le ressort suivant une ligne transversal. située de préférence approximativement à mi-longueur de is .POZ- tion avant et matérialisée par exemple par un brin transversal reliant deux ressorts en fil d'acier;
- l'axe d'articulation de la pièce pivotante est transversal et l'organe de réglage est une came polygonale solidaire d'un arbre transversal monté rotativement sur l'armature;;
- cet arbre transversal comporte s ne extrémité une roue dentée coopérant avec un cliquet porté par le levier de manoeuvre, lui-me'oee monté lie en rotation sur l'arbre transversal.According to other advantageous features of the invention
- Said front support is supported on the spring along a transverse line. preferably located approximately mid-length of is .POZ- tion before and materialized for example by a transverse strand connecting two springs in steel wire;
- The hinge axis of the pivoting part is transverse and the adjusting member is a polygonal cam secured to a transverse shaft rotatably mounted on the frame;
- This transverse shaft has s end not a toothed wheel cooperating with a pawl carried by the operating lever, lui-me'oee mounted linked in rotation on the transverse shaft.

Un exemple non limitatif de réalisation d'un dispositif de réglage selon l'invention est décrit ci-après, en référence aux dessins, annexes sur lesquels
- la Figure 1 est une vue simplifiée d'un siège équipé du dispositif de réglage selon l'inven- tion, en coupe par un plan vertical longitudinal:
- et la Figure 2 est une vue en perspective partielle avec arrachements, å plus grande échelle, d'une partie du dispositif.A nonlimiting example of embodiment of an adjustment device according to the invention is described below, with reference to the drawings, appendices in which
FIG. 1 is a simplified view of a seat fitted with the adjustment device according to the invention, in section through a longitudinal vertical plane:
- And Figure 2 is a partial perspective view with cutaway, on a larger scale, of a part of the device.

On voit sur la Figure i le coussin d'assise t d'un siège de véhicule automobile, coussin dont la portion avant 2 est soutenue par un support rigide 3 forme d'une plaque métallique mince approximativement horizontale et s'étendant sur preque toute la largeur du siège. Sur la face inférieure de cette plaque et à proximité de chacune de ses deux extrémités latérales. We see in Figure i the seat cushion t of a motor vehicle seat, cushion whose front portion 2 is supported by a rigid support 3 form of a thin metal plate approximately horizontal and extending over almost the entire seat width. On the underside of this plate and near each of its two lateral ends.

s'appuie la première extrémite 4 de l'un de deux ressorts 5 enroulés autour d'une tige transversale 6 portée par l'armature inférieure 7 du siège. L'extrémité 4 de chaque ressort 5 est reliée à celle de l'autre ressort 5 par un brin transversal 4a qui est réalisé dans un même fil d'acier que les deux ressorts 5, et qui est engagé dans plusieurs pattes courbes 8 solidaires de la plaque 3, sensiblement à mi-longueur de celle-ci en direction longitudinale du siège, Le brin 4a forme une ligne transversale d'appui pour la portion avant 2, cette ligne d'appui étant située de préférence approximativement à mi-longueur de la portion avant 2.is supported by the first end 4 of one of two springs 5 wound around a transverse rod 6 carried by the lower frame 7 of the seat. The end 4 of each spring 5 is connected to that of the other spring 5 by a transverse strand 4a which is made of the same steel wire as the two springs 5, and which is engaged in several curved tabs 8 integral with the plate 3, substantially at mid-length thereof in the longitudinal direction of the seat, the strand 4a forms a transverse support line for the front portion 2, this support line preferably being located approximately at mid-length of the front portion 2.

La deuxième extremité 9 de chaque ressort 5 est engagée dans une lumière 10 pratiquée dans chacun de deux leviers 11 solidaires de la tige 6 et pivotant autour de l'axe de cette tige. Chaque levier 11 prend appui, sous l'action du ressort 5, sur l'une de deux cames polygonales excentrées 12 ancrées sur un arbre transversal 13 porté par l'armature 7. The second end 9 of each spring 5 is engaged in a slot 10 formed in each of two levers 11 integral with the rod 6 and pivoting around the axis of this rod. Each lever 11 is supported, under the action of the spring 5, on one of two eccentric polygonal cams 12 anchored on a transverse shaft 13 carried by the frame 7.

Sur une extrémité 13a de cet arbre 13 située à l'extérieur de l'armature 7, est fixée une roue dentée 14 coopérant avec un cliquet 15 pivotant sur un axe 16 fixé à un levier de manoeuvre 17 monté libre en rotation sur l'extrémité 13a de l'arbre 13. Des ressorts 18 et 19, représentés de façon schématique, rappellent respectivement le cliquet 15 vers l'extrémité 13a de l'arbre 13, et le levier 17 vers le bas, contre une butée 20 solidaire de l'armature T. La denture de la roue 14 et la disposition du cliquet 15 sont telles que ce dernier entraine la roue 14 seulement lorsque le levier 17 pivote vers le haut.  On one end 13a of this shaft 13 located outside the frame 7, is fixed a toothed wheel 14 cooperating with a pawl 15 pivoting on an axis 16 fixed to an operating lever 17 mounted free in rotation on the end 13a of the shaft 13. Springs 18 and 19, shown schematically, respectively recall the pawl 15 towards the end 13a of the shaft 13, and the lever 17 downwards, against a stop 20 integral with the armature T. The teeth of the wheel 14 and the arrangement of the pawl 15 are such that the latter drives the wheel 14 only when the lever 17 pivots upwards.

A la Figure 1, la portion avant 2 du coussin d assise 1 est en position basse, chaque levier 11 s'appuyant sur la came associée 12 par une facette périphérique 12a située à faible distance de l'axe de l'arbre 13. Pour modifier la hauteur de la portion 2. In FIG. 1, the front portion 2 of the seat cushion 1 is in the low position, each lever 11 resting on the associated cam 12 by a peripheral facet 12a located a short distance from the axis of the shaft 13. For modify the height of the portion 2.

par exemple pour la rehausser jusqu a la position 2a correspondant à la position 3a de la plaque 3, l'occupant du siège soulève une ou plusieurs fois le levier 17, provoquant par l'intermédiaire du cliquet 15 la rotation de la roue 1X, donc de l'arbre 13 et des deux cames 12, par exemple jusqu'à ce que celles-ci coopèrent avec les leviers associés 11 par une facette périphérique 12b situee à distance relativement grande de l'axe de l'arbre 13, comme représenté à la Figure 2.for example to raise it to position 2a corresponding to position 3a of plate 3, the occupant of the seat lifts lever 17 once or more, causing the wheel 1X to rotate through the pawl 15, therefore of the shaft 13 and of the two cams 12, for example until the latter cooperate with the associated levers 11 by a peripheral facet 12b situated at a relatively large distance from the axis of the shaft 13, as shown in Figure 2.

Grâce à la flexibilité des ressorts 5. et quelle que soit la hauteur sélectionnée de la portion avant 2, celle-ci peut s'abaisser légèrement. par exemple sous la poussée d'une jambe de l'occupant actionnant une pédale de frein ou d'embrayage du véhicule. De plus, une légère modification de la position angulaire de la portion avant 2 est autorisée par pivotement de la plaque 3 autour de la ligne transversale d'appui du brin Sa reliant les premières extrémités 4 respectives des deux ressorts 5. Ainsi la plaque 3 et la portion 2 peuvent prendre des positions plus ou moins inclinées, telles que 3b et 2b. ce qui permet d adapter au mieux la forme de la partie avant du coussin d'assise à la morphologie de l'occupant du siège. Thanks to the flexibility of the springs 5. and whatever the selected height of the front portion 2, it can be lowered slightly. for example under the push of a leg of the occupant actuating a brake or clutch pedal of the vehicle. In addition, a slight modification of the angular position of the front portion 2 is authorized by pivoting of the plate 3 around the transverse line of support of the strand Sa connecting the respective first ends 4 of the two springs 5. Thus the plate 3 and the portion 2 can take more or less inclined positions, such as 3b and 2b. which makes it possible to best adapt the shape of the front part of the seat cushion to the morphology of the seat occupant.

En variante, un seul ressort 5 peut tette utilisé, associé à un levier 11 et à une came 12 analogues à ceux décrits précédemment. En ce cas. la première extrémité 4 -du ressort 5 prend de préférence appui sur la plaque 3 à proximité de son centre, et cette dernière est stabilisée latéralement par exemple au moyen de deux bras longitudinaux respectivement solidaires de chacune des extrémités latérales de la plaque et reliés à l'armature 7 par une articulation transversale.  Alternatively, a single spring 5 can be used, associated with a lever 11 and a cam 12 similar to those described above. In this case. the first end 4 - of the spring 5 preferably bears on the plate 3 near its center, and the latter is stabilized laterally for example by means of two longitudinal arms respectively integral with each of the lateral ends of the plate and connected to the frame 7 by a transverse articulation.

Par ailleurs, dans une disposition plus simple ne comportant pas de cliquet ni de roue dentée, le levier 17 ou un bouton de manoeuvre est fixé à l'extrémité 13a de l'arbre 13.  Furthermore, in a simpler arrangement comprising neither a pawl nor a toothed wheel, the lever 17 or an operating button is fixed to the end 13a of the shaft 13.

Claims (4)

REVENDICATIONS 1 - Dispositif de réglage en hauteur de la portion avant (2) d'un coussin d'assise (1) de siège en particulier siège de véhicule automobile, comprenant un support (3) relié à une armature inférieure (7) du siège par une articulation transversale et apte à coopérer avec un mécanisme de réglage actionnable par l'occupant du siège au moyen d'un bouton ou d'un levier 517) de manoeuvre disposé près du coussin d'assise (1), caractérisé en ce qu'au moins un ressort (5 > est interposé entre le support (3) de la portion avant 12) et une piece pivotante (11) qui est articulée sur l'armature (7 > du siège et susceptible de coopérer avec un organe de réglage (12) actionnable par le bouton ou le levier (17 > précités. 1 - Device for adjusting the height of the front portion (2) of a seat cushion (1), in particular a seat of a motor vehicle, comprising a support (3) connected to a lower frame (7) of the seat by a transverse articulation and able to cooperate with an adjustment mechanism which can be actuated by the occupant of the seat by means of a button or a lever 517) for maneuvering disposed near the seat cushion (1), characterized in that at least one spring (5> is interposed between the support (3) of the front portion 12) and a pivoting part (11) which is articulated on the frame (7> of the seat and capable of cooperating with an adjustment member ( 12) actuable by the button or the lever (17> above. 2 -- Dispositif selon la revendication 1, caractérisé en ce que la portion avant (2) est en appui sur le ressort (5) suivant une ligne transversale (4a) située de préférence approximativement à mi-longueur de la portion avant (2). 2 - Device according to claim 1, characterized in that the front portion (2) is supported on the spring (5) along a transverse line (4a) preferably located approximately mid-length of the front portion (2) . 3 - Dispositif selon l'une des revendications -1 et 2, caractérisé en ce que l-axe (6) d'articulation de la pièce pivotante (11 > est transversal et l'organe de réglage (12) est une came polygonale solidaire d'un arbre transversal (13 > monté rotati vement sur l'armature (7). 3 - Device according to one of claims -1 and 2, characterized in that the axis (6) of articulation of the pivoting part (11> is transverse and the adjusting member (12) is a polygonal integral cam a transverse shaft (13> rotatably mounted on the frame (7). 4 - Dispositif selon la revendication 3, caractérisé en ce que l'arbre transversal (13) comporte à l'une de ses extrémités une roue dentée (14) apte à coopérer avec un-cliquet (15) porté par le levier (17) de manoeuvre, lui-meme monté libre en rotation sur l'arbre transversal (13).  4 - Device according to claim 3, characterized in that the transverse shaft (13) comprises at one of its ends a toothed wheel (14) capable of cooperating with a pawl (15) carried by the lever (17) maneuver, itself mounted free to rotate on the transverse shaft (13).
FR8404867A 1984-03-28 1984-03-28 DEVICE FOR ADJUSTING A SEAT SEAT CUSHION, ESPECIALLY IN A MOTOR VEHICLE Expired FR2562003B1 (en)

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FR8404867A FR2562003B1 (en) 1984-03-28 1984-03-28 DEVICE FOR ADJUSTING A SEAT SEAT CUSHION, ESPECIALLY IN A MOTOR VEHICLE

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FR2612753A1 (en) * 1987-03-24 1988-09-30 Renault Device for adjusting the height of the front part of a seat base cushion
US5050931A (en) * 1986-04-10 1991-09-24 Steelcase Inc. Controlled deflection front lip for seating
US5080433A (en) * 1991-02-06 1992-01-14 General Motors Corporation Apparatus and method of a vehicle seat with an adjustable leg rest
US5215350A (en) * 1991-03-20 1993-06-01 Tachi-S Co., Ltd. Lumbar support device
US5490718A (en) * 1991-12-26 1996-02-13 Toyota Jidosha Kabushiki Kaisha Seat cushion structure for use in a front seat
FR2751278A1 (en) * 1996-07-22 1998-01-23 Hammerstein Gmbh C Rob SEAT AREA OF A VEHICLE SEAT WITH A CUSHION WHICH INCLINATION MAY BE ADJUSTED BY ADJUSTING THE HEIGHT OF THE EDGE BEFORE THE SEAT
DE10045399A1 (en) * 2000-09-14 2002-04-04 Faurecia Autositze Gmbh & Co Car seat with child safety seat fastened to it has seat cushion containing panel near front which is mounted on levers so that it can be moved upwards to compress cushion
US7404602B2 (en) * 2004-11-04 2008-07-29 Aisin Seiki Kabushiki Kaisha Vehicle seat apparatus
US8042867B2 (en) * 2009-11-02 2011-10-25 B/E Aerospace, Inc. Seat pan drop down link
CN104553890A (en) * 2013-10-17 2015-04-29 福特全球技术公司 Vehicle seating assembly
US20150274050A1 (en) * 2014-03-31 2015-10-01 Ford Global Technologies, Llc Vehicle seating assembly with manual cushion tilt
DE102009020659B4 (en) * 2009-05-08 2016-06-09 Audi Ag vehicle seat
US9649962B2 (en) 2013-01-24 2017-05-16 Ford Global Technologies, Llc Independent cushion extension and thigh support
US9707870B2 (en) 2013-01-24 2017-07-18 Ford Global Technologies, Llc Flexible seatback system
US9707873B2 (en) 2013-01-24 2017-07-18 Ford Global Technologies, Llc Flexible seatback system
US9802512B1 (en) 2016-04-12 2017-10-31 Ford Global Technologies, Llc Torsion spring bushing
US9834166B1 (en) 2016-06-07 2017-12-05 Ford Global Technologies, Llc Side airbag energy management system
US9845029B1 (en) 2016-06-06 2017-12-19 Ford Global Technologies, Llc Passive conformal seat with hybrid air/liquid cells
US9849856B1 (en) 2016-06-07 2017-12-26 Ford Global Technologies, Llc Side airbag energy management system
US9849817B2 (en) 2016-03-16 2017-12-26 Ford Global Technologies, Llc Composite seat structure
US9889773B2 (en) 2016-04-04 2018-02-13 Ford Global Technologies, Llc Anthropomorphic upper seatback
US9914378B1 (en) 2016-12-16 2018-03-13 Ford Global Technologies, Llc Decorative and functional upper seatback closeout assembly
US9994135B2 (en) 2016-03-30 2018-06-12 Ford Global Technologies, Llc Independent cushion thigh support
US10046682B2 (en) 2015-08-03 2018-08-14 Ford Global Technologies, Llc Back cushion module for a vehicle seating assembly
US10046683B2 (en) 2014-01-23 2018-08-14 Ford Global Technologies, Llc Suspension seat back and cushion system having an inner suspension panel
US10065546B2 (en) 2014-04-02 2018-09-04 Ford Global Technologies, Llc Vehicle seating assembly with manual independent thigh supports
US10166895B2 (en) 2016-06-09 2019-01-01 Ford Global Technologies, Llc Seatback comfort carrier
US10220737B2 (en) 2016-04-01 2019-03-05 Ford Global Technologies, Llc Kinematic back panel
US10239431B2 (en) 2016-09-02 2019-03-26 Ford Global Technologies, Llc Cross-tube attachment hook features for modular assembly and support
US10279714B2 (en) 2016-08-26 2019-05-07 Ford Global Technologies, Llc Seating assembly with climate control features
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US10369905B2 (en) 2014-10-03 2019-08-06 Ford Global Technologies, Llc Tuned flexible support member and flexible suspension features for comfort carriers
US10377279B2 (en) 2016-06-09 2019-08-13 Ford Global Technologies, Llc Integrated decking arm support feature
US10391910B2 (en) 2016-09-02 2019-08-27 Ford Global Technologies, Llc Modular assembly cross-tube attachment tab designs and functions
US10596936B2 (en) 2017-05-04 2020-03-24 Ford Global Technologies, Llc Self-retaining elastic strap for vent blower attachment to a back carrier
US11396253B1 (en) 2021-03-15 2022-07-26 Ford Global Technologies, Llc Adjustment mechanism for seating assembly member
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FR2503061A1 (en) * 1981-04-07 1982-10-08 Tubauto Vertical adjustment of vehicle seat front - comprises lever with toothed wheel engaging pinion in frame opening
GB2100790A (en) * 1981-06-25 1983-01-06 Hoover Universal Infinitely variable seat back recliner
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FR2254198A5 (en) * 1973-12-05 1975-07-04 Faure Bertrand
US4047759A (en) * 1976-07-09 1977-09-13 Towmotor Corporation Compact seat suspension for lift truck
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GB2100790A (en) * 1981-06-25 1983-01-06 Hoover Universal Infinitely variable seat back recliner
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Cited By (45)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5806930A (en) * 1986-04-10 1998-09-15 Steelcase Inc. Chair having back shell with selective stiffening
US5050931A (en) * 1986-04-10 1991-09-24 Steelcase Inc. Controlled deflection front lip for seating
FR2612753A1 (en) * 1987-03-24 1988-09-30 Renault Device for adjusting the height of the front part of a seat base cushion
US5080433A (en) * 1991-02-06 1992-01-14 General Motors Corporation Apparatus and method of a vehicle seat with an adjustable leg rest
US5215350A (en) * 1991-03-20 1993-06-01 Tachi-S Co., Ltd. Lumbar support device
US5490718A (en) * 1991-12-26 1996-02-13 Toyota Jidosha Kabushiki Kaisha Seat cushion structure for use in a front seat
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