| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 297301100 | Back adjusts independent of seat | 38 |
| 20090001794 | RECLINABLE CHAIR - A chair includes a supporting frame and a seat portion which is foldable about a transverse fold to define a rearward portion behind the transverse fold and a forward portion, forward of the transverse fold. The seat portion is supported above the supporting frame by its rearward portion. The chair also includes a reclinable back portion and a recline mechanism with which the back portion is connected for reclining action of the back portion. The recline mechanism is operably linked to the rearward portion of the seat portion such that on reclining action of the back portion, the rearward portion is moved to increase in rearward tilt angle and to obtain a net increase in height above the supporting frame, with a consequent folding of the seat portion about the transverse fold line under the weight of the occupant. | 01-01-2009 |
| 20100001567 | Therapeutic back support and stabilization - A therapeutic back support device including a back support portion that automatically and repeatedly moves forward to maintain engagement with a user's back as the user moves forward with respect to a chair seat. The back support portion substantially resists backward motion and provides substantially continuous therapeutic support to the user's spine pending a release signal. | 01-07-2010 |
| 20100084902 | Link Mechanism for a chair and a chair - There is provided a link mechanism for a chair that is a link mechanism that is used at a chair, the link mechanism for a chair having: a first link whose one end is connected to a bottom surface of a link that supports a seat surface portion of the chair; a second link whose one end is connected to another end of the first link; a first joint portion rotatably connecting the first link and the second link; a second joint portion provided at another end of the second link; and a first elastic resistance unit imparting elasticity in a rotating direction to the second joint portion. | 04-08-2010 |
| 20100109403 | CHAIR WITH TILTABLE BACKREST - A chair comprising, a base structure including two rear tubular elements open at the top, a backrest having two tubular portions open at the bottom and aligned to said tubular elements of the base structure, and two elastic devices, each of which has a top support inserted in a tubular portion of the backrest, a bottom support inserted in the corresponding tubular element of the base structure, and an elastic element flexurally deformable to enable tilting between the top support and the bottom support, wherein each of said elastic devices comprises a plurality of sectors stacked on top of one another and arranged between the top support and the bottom support, and wherein, in a resting position of the elastic element, a plurality of slits are formed on the rear side of each elastic device between each pair of adjacent sectors. | 05-06-2010 |
| 20100187884 | Support Member - A support member configured for attachment to a back assembly and a chair component is disclosed. One disclosed embodiment of the support member may be included in a chair that includes a base, a back assembly and the support member. The back assembly includes an extension attached to a back frame. The extension is attached to the base such that the back assembly is moveable relative to the base. The support member is attached to the extension and the base. The support member is more rigid than the extension. Preferably, the extension is composed of elastomeric material. | 07-29-2010 |
| 20100264709 | BACK EXTENSION BACKREST - A backrest for use with a chair that has a seat and a base. The backrest includes a lower member having a proximal end and a distal end, and upper member attached to the chair at the proximal end. A spring-hinge mechanism pivotally connects the lower member in the vicinity of the distal end to the upper member. A lumbar support is attached to the upper member and the lower member and spans the spring-hinge mechanism. In use a user sitting on the seat may, by anterior flexing of the user's upper back cause the upper member to pivot relative to the lower member from an unflexed position to a flexed position. | 10-21-2010 |
| 20110215623 | Height-Adjusting Assembly for Office Chair Backrest - A height-adjusting assembly for an office chair backrest includes a supporting unit mounted with a vertically movable backrest. The supporting unit and the backrest have correspondingly an engaging element and a series of positioning teeth, respectively, to be coupled mutually. Upper and lower ends of the series of positioning teeth have a retracting portion and an expanding portion for retracting and expanding the engaging element, respectively. When the backrest slides upward, the engaging element successively engages with one of the positioning teeth so as to position the backrest at a desired height. When the backrest reaches to an upmost position, the engaging element is pressed by the retracting portion and retracts so as to separate from the positioning teeth. Then the backrest reaches a bottommost position thereof has the engaging element expanded by the expanding portion, thereby allowing the engaging element to engage with the positioning teeth again. | 09-08-2011 |
| 20120153693 | Preference Control Mechanism - A preference control mechanism is provided that includes a housing, a shuttle, a sub shuttle and at least one resilient member. The housing has a channel. The shuttle has a cavity. The shuttle is moveable within the channel of the housing from a first position to at least one second position. The sub shuttle is moveable within the channel of the housing and is moveable independent of the shuttle. The one or more resilient members have a first end and a second end opposite the first end. The first end is attached to the shuttle and the second end is attached to the sub shuttle. The preference control mechanism is configured for attachment to at least one chair component. Chairs may also be designed to include one or more embodiments of the preference control mechanism, | 06-21-2012 |
| 20120193959 | AUTOMATIC WAISTREST ADJUSTING DEVICE FOR OFFICE CHAIRS - An automatic waistrest adjusting device for office chairs includes a waistrest combined with the bottom of a backrest, and the waistrest comes with a design of connecting a curved flexible metal plate and making use of whose flexibility to suspend the bottom of the waistrest that can be turned flexibly with a user's waist to achieve an ergonomic stepless angular adjustment to allow the user's waist to lean at the most comfortable position. The waistrest adjusting device combines the waistrest and the backrest by simple components and assembling method, and achieves the effects of preventing poor performance and quality caused by an elastic fatigue and extending the use life. | 08-02-2012 |
| 20130057037 | REACTION FORCE MECHANISM FOR BACKREST OF CHAIR AND CHAIR MOUNTED WITH THE SAME - Reaction force mechanism for backrest of a chair has clear large space under the seat and uses a longer reaction force spring than the prior art. The mechanism includes a base member supported on a leg, a back support member coupled by a rotation shaft to the base member to recline and support the backrest, a seat support member to which the seat is mounted, a weight-dependent reaction force mechanism for moving the seat support member in a lifting direction, and a reaction force spring for applying a spring force for returning the back support member to an original position, in which the reaction force spring is disposed in a lateral orientation between the back support member and the seat support member. | 03-07-2013 |
| 20130076092 | VEHICLE SEAT BACKREST WITH FLEXURAL JOINT MOTION-CONTROL - A vehicle seat includes a backrest coupled to an upwardly extending support frame. The backrest includes a deformable seat shell adapted to assume various shapes between an initial position and a final position in response to variable rearward loads applied by the torso of a seated passenger. The seat shell is coupled to the support frame by a compliant shell-motion controller via upper and lower motion-control links. At least one of the motion-control links includes a flexural portion configured to bend about a pivot axis to establish a flexural joint. The lower motion-control link may include a flexural joint and/or a revolute joint, and the upper motion control link may include a flexural, revolute, or spheroidal joint. | 03-28-2013 |
| 20130093228 | DYNAMIC SEATING COMPONENTS FOR WHEELCHAIRS - A wheelchair includes a pivotable mechanism. The pivotable mechanism allows for a pivoting movement about an axis defined by an interface between adjacent components. These components may be (a) a seat member and a back member, (b) a seat member and a footrest, (c) a foot rest and a footplate support, (d) a baseplate and a footplate, or (e) a back member and a headrest. | 04-18-2013 |
| 20140062154 | RESILIENT CHAIR INCORPORATING MULTIPLE FLEX ZONES - A reclining chair has a base coupled to a chair back. The chair back is adapted to recline from an upright position to a reclined position. To accommodate that reclining motion, the chair back includes a flex zone formed with notches extending through an inner portion of the flex zone. Those notches narrow as the chair back reclines from the upright position to the reclined position. The flex zone also includes an outer portion that is separated from the inner portion by a gap, the outer portion having one or more notches extending through the outer portion. Those notches also narrow as the chair back reclines from the upright position to the reclined position. | 03-06-2014 |
| 20140103690 | VEHICLE SEAT COMPRISING AN ADJUSTABLE BACKREST SHAPE - The invention relates to a vehicle seat comprising a seat frame having a sitting surface frame and a backrest frame, wherein the backrest frame has a left backrest longitudinal strut and a right backrest longitudinal strut as well as a lower cross strut and an upper cross strut, the right and left backrest longitudinal struts being pivotably arranged on the lower cross strut in such a way that the backrest frame is helically deformable. | 04-17-2014 |
| 20140239686 | ERGONOMIC SEATING ASSEMBLIES AND METHODS - Seating assemblies and methods are disclosed. A seating assembly ( | 08-28-2014 |
| 20150130237 | SEAT FOR MOVING BODY - Disclosed is a seat for a vehicle including a seatback portion and a seat portion. The seatback portion includes a lower portion of the seatback portion that supports a lower part of an upper body of an occupant sitting in the seat portion, and an upper portion of the seatback portion that supports an upper part of the upper body. The lower portion of the seatback portion has support resistance against the lateral movement of the upper body, which is lower than that of the upper portion. | 05-14-2015 |
| 20150289654 | MULTIFUNCTION CONTROL DEVICE - The control device includes a seat having a positioning hole. An elevation support connects a first control line and is pivoted to the seat. A control lever has a connecting base received in the receiving room. The connecting base has a receiving hole, a connecting trough and a driving shaft. A tilt support has a through hole and connects a second control line. A cover assembled with the seat has a rotation hole. A rotation support has a cap and a bar. The bar has an insert hole and passes the rotation hole, the through hole and the connecting trough. A bolt passes through the insert hole and the receiving hole. | 10-15-2015 |
| 20160095443 | Chair - The present invention relates to a chair having a subframe, a seat part supported thereon and having a seat surface and a backrest which is disposed in the region of an edge of the seat part at least approximately perpendicularly to the seat surface and contains a contact surface for the back of a person sitting on the chair, wherein the backrest is designed such that it can pivot laterally about a pivot spindle extending at least approximately perpendicularly to the contact surface of the backrest. | 04-07-2016 |
| 20160157615 | CHAIR WITH ELASTICALLY-DEFORMABLE SEAT AND BACKREST - A chair comprising: a metal frame formed by a plurality of tubular metal elements, including a seat portion having two tubular seat support elements and a backrest portion having two tubular backrest support elements extending upwardly from the seat portion, a flexible seat panel of plastic material with high elasticity, having two lateral tubular portions into which respective tubular seat support elements are inserted, and a flexible backrest panel of plastic material with high elasticity having two lateral tubular portions into which respective tubular backrest support elements are inserted, wherein in a rest condition there is a transverse clearance between the outer edges of the lateral tubular portions of the flexible seat panel and of the flexible backrest panel and the respective tubular support elements, and wherein in a deformed condition said transverse clearance is reduced to zero. | 06-09-2016 |
| 20170231395 | BACKREST FOR AN OFFICE CHAIR | 08-17-2017 |
| 20190142168 | CHAIR STRUCTURE | 05-16-2019 |
| 297301200 | Fluid-spring | 2 |
| 20090195038 | SEAT WITH DYNAMIC SEAT BACK - A seat back assembly ( | 08-06-2009 |
| 20090315376 | RECLINABLE CHAIR WITH ADJUSTABLE PARALLEL LOCKING GAS SPRING DEVICE - A gas spring device includes a pair of gas springs disposed parallel and adjacent one another. Each of the gas springs has a piston extendable in an opposite direction from the piston of the other gas spring. An adjustable coupling joins the pair of gas springs together and is adjustable to selectively position one of the gas springs along a longitudinal length of the other gas spring in order to adjust the overall piston-to-piston length of the gas spring device. Additionally, an inclinable chair can include the gas spring device to allow a chair frame to be selectively positioned at a desired angle of inclination with respect to a base frame. | 12-24-2009 |
| 297301300 | Torsion bar or torsion spring | 4 |
| 20090066134 | Permanent Contact Mechanism - A permanent-contact mechanism for an office chair or the like is formed as a comparatively flat permanent-contact mechanism with a seat frame, which can be positioned on a chair upright, with a backrest support, which is arranged on the seat frame such that it can be pivoted about a transverse axis, and with at least one spring-activated or inherently resilient lever element, which interacts with the backrest support such that the backrest support is always pivoted counter to a spring force. The position of the point of rotation of the lever element differs from the position of the transverse axis. | 03-12-2009 |
| 20090091170 | Chair seat having a resilient seatrest/backrest, method of manufacturing same and carbon fibre material used as a spring - A chair seat adapted to be mounted on or in a frame, and comprising a seat part ( | 04-09-2009 |
| 20090302654 | Chair With Tiltable Backrest - A chair having a base adapted to support the chair on a support surface, and a seat and backrest mounted on the base that includes a flexible backrest and a relatively simple tilt mechanism for tilting the backrest relative to the seat. The tilt mechanism includes a pair of dual cantilevered U-shaped springs mounted on opposite sides of the base and in communication with the backrest. The backrest is mounted to the tilt mechanism such that a rearward thrust applied by the user deflects an outer end of each U-shaped spring downwardly to enable rearward tilting of the backrest relative to the seat. Upon removal of the rearward thrust, the backrest elastically returns to its initial position under the biasing force of the U-shaped springs. | 12-10-2009 |
| 20140339870 | Seat Furniture, More Especially Office Swivel Chair - Seat furniture is provided that includes a seat and a backrest support which are mounted on a support member, the backrest support being pivotal about a horizontal pivot axis, and an energy accumulator which is tensioned when the seat is subjected to a load and acts on the backrest support, the energy accumulator engaging the backrest support at an effective distance from the pivot axis, characterized in that the energy accumulator is connected on one side to the support member and on another side via a transverse connector to the backrest support. | 11-20-2014 |
| 297301400 | Coil spring | 7 |
| 20080252124 | Apparatus for adjusting the angle of a seat back of an office chair - An apparatus for adjusting the angle of a seat back of an office chair includes: a supporting base; a seat body mounted on the supporting base; a seat back having a pair of elongated ears symmetrically parallel to each other and disposed at the bottom end of both sides thereof, the elongated ears each being pivotally connected to the rear side of the seat body; and an elastic support element slantly disposed at a lower location between the bottom end of the seat back and the rear end of the seat body. Based upon the above-mentioned configuration, a strong elastic supporting force is provided for the seat back. As a result, the inclination of the seat back can be automatically adjusted when the body of the user leans backward. | 10-16-2008 |
| 20080309135 | SIX BAR MECHANISM AND CONTROL FOR CHAIR - A chair according to embodiments of the present invention includes a base; a first linkage pivotably coupled to the base, a seat pivotably coupled to the first linkage, a second linkage pivotably coupled to the seat and pivotably coupled to the base, a back comprising a substantially upright portion and an attachment portion, the attachment portion pivotably coupled to the base at a first pivot point, and a third linkage pivotably coupled to the back at a second pivot point and pivotably coupled to the second linkage, wherein the second pivot point is on the attachment portion between the first pivot point and the substantially upright portion. | 12-18-2008 |
| 20090079246 | Spiral Spring Assembly - An object of the present invention is to provide a spiral spring assembly that is capable of suppressing lateral force generated in a central shaft. | 03-26-2009 |
| 20110057492 | VEHICLE SEAT - A seat back frame includes: a base frame; a movable frame supported for movement in a frontward-rearward direction with respect to the base frame; and a biasing member biasing the movable frame frontwardly and permitting a rearward movement of the movable frame in response to a load having a given value or more. The base frame has an upper frame section supporting a headrest, and two side frame sections extending in an upward-downward direction on laterally opposite sides of the upper frame section. The movable frame has a back-receiving section located between the side frame sections, and two side support sections on laterally opposite sides of the back-receiving section to project forward from the side frame sections. Front ends of the side support sections are disposed to stop a rear surface of the pad that receives a rearward load from a back of an occupant. | 03-10-2011 |
| 20120274111 | CHAIR WITH TILTING BACKREST - Chair comprising, a base structure bearing a seat, a tilting backrest, and at least one joint which connects the backrest to the base structure and allows a movement of the backrest between a rest position and a backward tilted position under a backwards push applied by the user, wherein said joint comprises a first and a second curved component with a circular profile coupled together in a telescopic manner and fixed to the base structure or to the seat and, respectively, to the backrest. | 11-01-2012 |
| 20140077553 | Chair Back Mechanism and Control Assembly - A chair assembly including a first chair structure, a second chair structure, an actuator assembly coupled to the second chair structure to move the second chair structure between the first and second positions, a control input assembly coupled to the first chair structure, and a control link assembly coupling the control input assembly with the actuator assembly to move the second chair structure between first and second positions, and including a first shaft operably coupled to the control link, and rotatable about a second axis that is substantially orthogonal to the first axis and to the first direction, and first and second universal joint assemblies coupling the first shaft member to the second shaft, wherein actuation of the control input moves the second chair structure between the first and second positions. | 03-20-2014 |
| 20150335160 | CHAIR WITH A TILTING BACKREST - A chair comprising: a base structure, a seat fixed to the base structure, a backrest, and a pair of oscillation joints which connect the backrest to the seat or to the base structure so as to allow tilting of the backrest around a transverse axis between a rest position and a backwardly tilted position, wherein each of said oscillation joints comprises: an essentially L-shaped rigid support a rigid lever articulated to the rigid support, and having a first and a second lever arm located on opposite sides with respect to the articulation axis, and an elastic device comprising a telescopic element and a compression spring, wherein the elastic device applies an elastic force between said rigid support and said first lever arm and wherein said second lever arm protrudes outwards from said rigid support and is fixed to a corresponding side edge of the backrest. | 11-26-2015 |
| 297301500 | Including back movement limiting device | 4 |
| 20080238165 | Recline Mechanism For Seating Furniture - A seating furniture ( | 10-02-2008 |
| 20080272637 | Foldable Vehicle Seat - A vehicle seat includes a pivotable backrest including a counterbalance electric and/or pneumatic drive, a locking/unlocking mechanism and an adjustment mechanism. | 11-06-2008 |
| 20100066145 | VEHICLE SEAT - A vehicle seat comprises a cushion plate mounted on upper and lower seat springs, a seat cushion provided on a front side of the cushion plate, an auxiliary plate provided between the seat cushion and the cushion plate for pushing out the seat cushion forward. The cushion plate includes an upper plate located higher than the lower seat spring and a lower plate located lower than the lower seat spring. The lower plate has such elastic force that when the lower plate receives, through the seat back cushion, pressure from a person properly seated on the seat, the lower plate can move backward by a greater distance than the distance of rearward movement of the lower seat spring. | 03-18-2010 |
| 297301600 | Adjustable | 1 |
| 297301700 | Manually | 1 |
| 20140097655 | THERAPEUTIC BACK SUPPORT AND STABILIZATION - A therapeutic back support device including a back support portion that automatically and repeatedly moves forward to maintain engagement with a user's back as the user moves forward with respect to a chair seat. The back support portion substantially resists backward motion and provides substantially continuous therapeutic support to the user's spine pending a release signal. | 04-10-2014 |
