| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 297300100 | Back and seat adjust simultaneously | 35 |
| 20090289482 | Chair - A chair is provided that is designed so that the angle of the seat surface portion and the angle of the back surface portion are independent of each other and change, and a user can always take the optimum seated posture. The chair includes a base portion, a first link fixed to a seat and rotatably connected to the base portion, and a second link fixed to a seat back rest and rotatably connected to the first link. The chair also includes a first torque-generating mechanism that generates torque in accordance with the angle of the first link relative to the base portion; and a second torque-generating mechanism that generates torque in accordance with the angle of the second link relative to the first link. | 11-26-2009 |
| 20100141002 | BIASING MECHANISM - A biasing mechanism between two portions of a chair, such as the seat and back components, where the biasing mechanism can position the back component in an infinite number of recline positions between a first, or fully upright, position and a second, or fully reclined, position, where the biasing mechanism consists of a leaf spring and a cylinder in a parallel configuration. | 06-10-2010 |
| 20100164263 | CHAIR WITH OSCILLATING BACKREST - A chair with backrest that can be inclined backwards has a seat carried by a support ( | 07-01-2010 |
| 20110181086 | SUPPORT STRUCTURE FOR A BACK PART AND/OR A SEAT OF A SEAT ASSEMBLY AND SEAT ASSEMBLY COMPRISING SUCH A SUPPORT STRUCTURE - A support structure for a back part and/or a seat of a seat assembly includes a base support, a support part, and a power system. The support part is arranged on the base support to support and/or hold the respective back part and/or seat, and is attached to the base support to allow movement of the support part relative to the base support. The power system, which includes first and second spring elements and a coupling device, generates a reset force in response to (and directed opposite to) the respective movement of the support part. When the coupling device is in a first state, the second spring element generates a second reset force directed opposite to the movement of the support part. When the coupling device is in the second state, the second spring element does not generate the second reset force. | 07-28-2011 |
| 20120025574 | CHAIR, A SUPPORT, AND COMPONENTS - A chair has a seat support ( | 02-02-2012 |
| 20120161482 | CHAIR - An object of this invention is to provide a chair having less sliding resistance, less abrasion and less noise with prevention of partially contacting each component while the chair is making a rocking movement. | 06-28-2012 |
| 20120205952 | ROCKING CHAIR - Provided is a chair suited to the use of a keyboard or mouse, the chair has a seat | 08-16-2012 |
| 20140077551 | Chair Assembly - A chair assembly includes a base structure, a seat support structure pivotably coupled to the base structure, a back support structure pivotably coupled to the base structure and including an upwardly extending portion adapted to move between an upright position and a reclined position, a control link having a first end pivotably coupled to the seat support structure and a second end pivotably coupled to the back support structure, a back support surface having an upper portion pivotably coupled to the back support, and a back link pivotably coupled to the seat support structure, wherein the back support surface is moved forward by the back link relative to the upwardly extending portion of the back support structure as the back support structure is moved from the upright position to the reclined position. | 03-20-2014 |
| 20140077552 | Control Assembly for Chair - A control assembly for a chair including a base structure including a first pivot point and a second pivot point spaced from the first pivot point, and a seat support structure directly pivotably coupled to the base structure for rotation about the first pivot point, a back support structure pivotably coupled to the base structure for rotation about the second pivot point, wherein the back support structure is adapted to move between a first and second position, a control link having a first end operably coupled to the seat support structure, and a second end operably coupled to the back support structure, and a biasing assembly exerting a biasing torque about the second pivot point that biases the back support structure from the second position toward the first position, wherein the biasing torque is adjustable between first and second magnitudes when the back support structure is in the first position. | 03-20-2014 |
| 20140103689 | SLIDE CHAIR ACTION - A chair action features a movable seat frame ( | 04-17-2014 |
| 20160128481 | CHAIR WITH SEAT AND BACKREST MOVABLE IN A SYNCHRONIZED WAY - A chair comprising: a base structure comprising a support, a seat connected to the support via a synchronization mechanism and movable with respect to the base structure between a lowered position and a raised position, and a backrest connected to the synchronization mechanism and movable between an upright position, corresponding to the lowered position of the seat, and a backward-inclined position corresponding to the raised position of the seat, wherein said synchronization mechanism comprises two loop-shaped elastic elements spaced apart in a transverse direction and each comprising a lower portion fixed to a rigid support, an upper portion fixed to the seat, a front elastic portion and an essentially C-shaped rear elastic portion that connect the upper portion to the lower portion, wherein the backrest is fixed to the rear elastic portions of said loop-shaped elastic elements. | 05-12-2016 |
| 297300200 | Back tilts while seat inclination adjusts | 24 |
| 20090015047 | Seat - The invention relates to a seat, in particular, a vehicle or aircraft passenger seat with seat components such as a seat base ( | 01-15-2009 |
| 20090152921 | TILT MECHANISM FOR A CHAIR - A tilt mechanism provides improved coordination in the motions of a chair seat and a chair back during chair tilt. In one aspect, the tilt mechanism includes a seat base, a back bracket, a back support bar, a guide track and a back follower member. The seat base is slidably coupled to the chassis and rigidly coupled to the chair seat. The back support bar is configured for moveable engagement with the back bracket coupled with the chair back. Additionally, the back follower member, coupled with the chair back, is received within one or more channels formed in the guide track for moveable engagement therewith. A proportional and asynchronous action is achieved via the back bracket moving relative to and in engagement with the back support bar, the back follower member moving within the guide track and the seat base sliding forwardly relative to the chassis. | 06-18-2009 |
| 20090179473 | Tilt control mechanism for a chair - A tilt control mechanism for an office chair includes a spring assembly therein which controls the tilt tension on the back assembly. The tilt control mechanism includes a control plate mounted to the control shaft on which the uprights are mounted, wherein the control plate rotates in combination with the uprights. This control plate is located within the control body and cooperates with a front stop assembly and a back stop assembly to vary the limits of forward and rearward tilting of the seat and back assemblies. Also, the tilt control mechanism includes a pneumatic actuator assembly having fixed and rotatable cam blocks. The rotatable cam block rotates relative to the fixed block such that the rotatable cam block is driven downwardly to depress the control valve of the pneumatic cylinder and thereby vary the height of the seat assembly. | 07-16-2009 |
| 20090218864 | CHAIR | 09-03-2009 |
| 20090267394 | Mechanism for an Office Chair - A mechanism for an office chair having a backrest support which may be pivoted rearwardly. Adjustment of the backrest pivotal motion is accomplished by the mechanism having a base support which may be positioned on a chair column, a seat support, the backrest support which may be pivoted to the rear, and a pre-tensioned spring arrangement for enabling the mechanism to counter or oppose the movement of the backrest support. The seat support and the base support form a movable unit, which may be moved relative to the chair column depending on the weight of a user applying a load to the seat support. Movement of the movable unit causes an adjustment of the pre-tension of the spring arrangement and/or an adjustment of the spring constant of the spring arrangement. | 10-29-2009 |
| 20090289483 | Mobile ergonomic rotating adjustable chair with lumbar support - An apparatus for sitting, including: a keystone assembly which connects various parts of the apparatus; a back that provides support for at least a person's back or shoulders; a floating lumbar support, which provides support for a person's lower back, attached to the keystone assembly; a seat that can adjust between a forward tilted and reclined position; a plurality of rollers, disposed on the keystone assembly, on which the seat rests; a central column, attached to the keystone assembly, on which the seat can spin; and a lower torsion spring connected to the seat and disposed on the keystone assembly allowing controlled movement of the seat. | 11-26-2009 |
| 20100133884 | CHAIR - The invention relates to a chair with a seat, a base support and a backrest, wherein the seat is pivotably mounted on the base support and the backrest is pivotably mounted on the seat, and a first spring system is provided between the base support and the seat and a second spring system is provided between the seat and the backrest. Furthermore, means are provided for adjusting the spring behavior of the two spring systems so that the pivotability of the seat in relation to the base support and the pivotability of the backrest in relation to the seat can be adapted to different requirements, especially to users of different weights. | 06-03-2010 |
| 20100289308 | Seating Arrangement - The invention relates to a seating arrangement ( | 11-18-2010 |
| 20100289309 | Synchronizing device for an office chair - The synchronizing device comprises a seat carrier for carrying a seat of said office chair, a seat arm to be connected to a chair column of said office chair, said seat carrier being pivotable in relation to said seat arm about a transverse axis, a backrest arm connected to said seat arm and to said seat carrier such as to be pivotable about a transverse axis, a spring adapted to counter a synchronized movement of said seat carrier and backrest arm, and a sliding member extending substantially in a longitudinal direction of said seat and being articulated to said seat arm, said seat carrier being slidable in relation to said sliding member substantially in said longitudinal direction of said seat. | 11-18-2010 |
| 20110018322 | CHAIR WITH PRE-STRESSING STRUCTURE - The present invention provides a chair with a pre-pressing structure. The chair includes a main body and pre-pressing structure. The pre-pressing structure includes a permanent seat, pre-pressing member and pivoted seat. The permanent seat is arranged onto the assembly surface of the backing plate, and the pre-pressing member is assembled therein. The multi-segment directional groove of the pivoted seat is interlocked with the multi-segment directional bulge of the pre-pressing member, so that the circular elastic member of the pre-pressing member can obtain a torsional restoring force, allowing for pre-pressing and locating via the pre-pressing locator. The pivoted seat is fitted with an inserting portion for inserting into the support of the main body. | 01-27-2011 |
| 20110062759 | Seat Mechanism for an Item of Seating Furniture, in Particular Office Swivel Chair - A seat mechanism for an item of seating furniture, in particular a chair, has a movable seat carrier and a backrest carrier, which are mounted on a main carrier. The backrest carrier can be pivoted about a horizontal pivot axis counter to the action of a force accumulator, and the seat carrier and the backrest carrier are coupled to each other. A lifting mechanism is provided. The lifting mechanism converts pivoting of the backrest carrier into a lifting movement of the seat carrier. A seat mechanism is provided with a weight-dependent resetting force for the backrest. The seat mechanism is distinguished by a simple construction in which the weight can be utilized efficiently. To increase the comfort, the seat is lowerable in the rear region and the resetting force is adjustable by means of a second force accumulator. | 03-17-2011 |
| 20120161483 | CHAIR - An object of this invention is to provide a chair comprising a simple and compact rocking mechanism and lock mechanism to lock the rocking movement. | 06-28-2012 |
| 20120181831 | Mechanism For A Chair - The invention relates to a mechanism ( | 07-19-2012 |
| 20140159452 | ADJUSTING MECHANISM FOR SETTING A RESTORING FORCE WHICH ACTS ON A BACKREST OF A CHAIR, AND OFFICE CHAIR HAVING AN ADJUSTING MECHANISM OF THIS TYPE - The adjusting mechanism serves for the weight-dependent setting of a restoring force which acts on a backrest ( | 06-12-2014 |
| 20160249739 | CHAIR HAVING SYNCHRONIZED BACKREST AND SEAT MOVEMENTS | 09-01-2016 |
| 297300300 | Fluid-spring | 3 |
| 20090066133 | Adjusting Structure for use in Reclining Chairs - An adjusting structure for use in reclining chairs includes a reclining chair including a seat, a chairback, two armrests, a pad and a frame. The frame includes a hydraulic cylinder pivotally disposed on the rear end thereof and two double rodded holders couplingly mounted on two sides thereof respectively. The front ends of the double rodded holders and two swinging members beneath the seat are pivotally connected with a shaft. Each of the double rodded holders includes an offset member affixed on the front end thereof and extending backwardly for coupling with the bottom of the armrest. Also, the pad includes two connecting rods attached on two sides thereof, each connecting rod having two supports secured on the seat and the armrest respectively. The rear sides of the two supports are coupled with the chairback by using a T-shaped piece, thereby enabling the functions of recumbency and force-saving leave from the reclining chair. | 03-12-2009 |
| 20100244522 | Chair providing more comfortable when seated in optimum posture while reclining - A chair has a link of a chair back, a link of a chair seat, and a link mechanism that pushes up the link of the chair seat when the link of the chair back is pressed to incline rearward, so that the occupant can take the optimum seating posture without being conscious, thus further improving the comfort in the reclined posture. | 09-30-2010 |
| 20140049082 | MODULAR CHAIR MECHANISM WITH SELF-WEIGHING - A modular chair mechanism for limiting travel and adjusting tension in a chair is provided. The chair mechanism generally includes a shuttle that travels inside a housing, with a biasing member that applies tension during travel of the shuttle. An interface is coupled to the shuttle that alters the amount of force required to cause the shuttle to travel. In embodiments, the chair mechanism limits travel of a chair back support assembly to a number of positions based on travel of a shuttle inside the mechanism housing. For example, a feature on an end of the shuttle may selectively abut one of a plurality of retention means on the housing, which determines how far the shuttle may travel in that position. The amount of tension in the biasing member may also be affected by a self-weighing mechanism that applies an initial amount of force against a biasing member. | 02-20-2014 |
| 297300400 | Torsion bar or torsion spring | 3 |
| 20090121531 | SEATING SYSTEM - A seating system has a tiltable seat is coupled to a base, which can be coupled to or part of a motor vehicle or other device. The seat can include a seat bracket coupled to the base by a seat tilt pivot configured to permit limited tilting of the seat relative to the base. The seat also can include a footrest mounted to the seat bracket, a horizontal seat cushion and/or a back support coupled to the seat bracket or cushion. The seat is configured to maintain a user's body in a fixed position during tilting throughout the seat's range of tilt angles. A seat adjustment mechanism allows angular adjustment of the seat relative to the base and locks the seat at a fixed tilt angle relative to the base. In some embodiments the seat tilt pivot, that is the axis about which the seat tilts relative to the base, is located approximately vertically below the center of gravity of a loaded seat, thus reducing the force needed to tilt a loaded seat. By fixing or maintaining the seat tilt pivot nearly or directly vertically beneath the load being pivoted, the loaded seat center of gravity (whether using a static seat tilt pivot or a translating seat tilt pivot), the amount of force needed to control seat tilting through a full range of tilt angles can be limited to forces that a typical user can exert with one or two hands. The seat tilt pivot can be a static seat tilt pivot, where the center of gravity moves in a range of positions above the static seat tilt pivot point, or a translating seat tilt pivot, where the seat tilt pivot point moves generally in concert with the loaded seat center of gravity when a user is seated normally on the seat. | 05-14-2009 |
| 20100109402 | LOCKING DEVICE FOR A MOVABLE MEMBER IN A CHAIR - An easily operable lock device for a movable member of a chair, the lock device being adapted such that a person sitting on the chair can select lock or unlock position by operating operation means with a load, such as the weight of the person, acting on the movable member and, when the load is removed after the selection of the lock or unlock position, lock or unlock operation is executed. A lock pin provided at a spring receiving member functioning as a movable member, is selectively engaged with and disengaged from engagement holes formed in a reinforcement plate functioning as a support member. The lock device has biasing means for biasing the lock pin toward the lock position when an operation member moved by the operation means is set at a lock reservation position and biasing the lock pin toward the unlock position when the operation member is set at an unlock reservation position. | 05-06-2010 |
| 20150123441 | CHAIR AND CHAIR TILT CONTROL ASSEMBLY - In an aspect, the invention is directed to a chair that has a pedestal and an upper assembly including a body support assembly and a tilt control assembly. A biasing member is provided to bias the body support assembly towards an unreclined position. When the chair is empty the biasing member has a certain preload. When a person sits in the chair or when a downward force is applied to the upper assembly, there is relative movement between two chair components which causes an increase in the preload in the biasing member as compared to the preload when the chair is empty. As the downward force on the upper assembly increases, the preload in the biasing member increases. | 05-07-2015 |
| 297300500 | Coil spring | 2 |
| 20100096894 | Shock absorbing device and chair - A shock absorbing device is provided that includes a cylindrical damper, a compression coil spring disposed around the damper having an axis substantially in line with the axis of the damper, and a cylindrical spring guide disposed around the compression coil spring so as to cover the compression coil spring. | 04-22-2010 |
| 20120062006 | Tension mechanism for a weight-responsive chair - A weight-responsive chair is provided which has a weight-activated mechanism that resists rearward tilting of a chair back upright while also effecting lifting of a rear portion of the seat to counteract the rearward tilt forces. The weight-activated mechanism includes a spring package connected between the chair frame and back upright which provides for ready mounting of same to the chair frame. Further, the rear seat portion is connected in lifting engagement with the upright but also includes independent suspension for the center of the rear seat portion to allow for independent movement and flexing thereof to improve comfort for the chair occupant. | 03-15-2012 |
| 297300600 | Including back limiting device | 1 |
| 20110074197 | Chair - A chair structure results in a proper counter force when an occupant reclines on a back. The chair is composed of a pintle, a base which is supported by the pintle, a back support which is installed on the back, a seat support which is installed on a seat, a first swaying pivot, a second swaying pivot which is located in front of the first swaying pivot, a third swaying pivot which is located between the first swaying pivot and the second swaying pivot, and a sliding structure. The chair is provided with simple structures, and can result in a constant counter force or maintain a proper counter force depending on an angle of the back, when the occupant reclines on the back. | 03-31-2011 |
