Abstract: A seat for passengers comprising a seat body and at least one seat portion, wherein the seat comprises identification devices able to receive and verify the correctness of an identification code of the seat and activation devices, operatively connected to the identification devices, so as to be enabled and/or disabled depending on the result of verification of the identification code.

Abstract: A chair backrest elevating device includes a slide base having a slide way provided with a recessed hole and a positioning rod. An adjusting unit is combined with the positioning rod, composed of a sustaining member, a movable block, a spring, a positioning block and an elastic retainer. A fixing plate unit received in the slide way of the slide base contains a fitting block and a fixing plate. A slide cover is coupled with the slide base for covering the adjusting unit and the fixing plate unit. The slide base and the slide cover are assembled on a chair backrest while the fixing plate unit is combined with a seat. When the backrest is pulled up or down, the slide base and the slide cover is also shifted to have the sustaining member engaged in different-level engage grooves of the fitting block, thus adjusting the backrest upward or downward.

Abstract: 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.

Abstract: A chair configured such that a backrest support rod does not make contact with an object when the chair is swiveled and is thus reliably prevented from damaging the object or from being damaged by the object and that the chair uses a reduced number of parts, has a simple structure, and can be easily assembled. A chair, wherein front portions of front facing sections (9b) of a backrest support rod (9) are mounted to a support base (5) supported by a leg body (3) and supporting a seat (7). The backrest support rod (9) is formed in an L-shape in a side view and comprises upwardly facing raised sections (9a) and the forwardly facing front facing sections (9b). The upwardly facing raised sections (9a) and the forwardly facing front facing sections (9b) are connected together through a curved section (9c), and the raised sections (9a) support a backrest (6).

Abstract: The adjustment device according to the invention for an adjustable element, in particular the backrest of a chair, has a guide rail and a sliding element which is movable in the guide rail along an adjustment axis. Furthermore, a blocking element is provided, which blocking element can be secured on the guide rail or on the sliding element in a latching position in which the sliding element can be moved along the adjustment axis at least in one direction between two end positions, wherein the blocking element comes into operative contact with latches spaced apart along the adjustment axis. During the installation of the adjustment device, the blocking element is secured on the guide rail or the sliding element in an installation position in which the sliding element can be introduced into the guide rail in the direction of the adjustment axis.

Abstract: A seat including a plurality of user support assemblies that are independently adjustable. User support assemblies, which are independently adjustable, include a head support assembly, a thoracic support assembly, and a lumbar support assembly. Moreover, the seat might include a independently adjustable seat assembly.

Abstract: A backrest structure capable for a vehicle having seats that are supported on a vehicle body frame via a seat frame as a seat support member. Each of the seats includes a seat back as a backrest supporting a back of a driver. The seat back is removably mounted in the seat frame, thereby permitting positional adjustments in vertical and longitudinal directions to fit a body type of the driver. The resulting configuration makes driving of the vehicle easier.

Abstract: In a vehicular seat 10 according to this invention, since a back shell 32 covers a back frame 31, as in the case where the shape of a seat back is formed of the urethane pad, the shape of the seat back is not easily changed. Thus, the passenger can be surely held. Further, since the back shell 32 is displaceably supported for the back frame 31, the back shell 32 is displaced according to the figure or posture of the passenger. This permits the passenger to sit with good riding comfort.

Abstract: A chair having a seat, a first support base and an upright elongated support element. The upright elongated support element has a first point and a second point, with the first point connecting to the seat and the second point connecting to the first support base. The first support base is bolstered by a resilient component since the resilient component is disposed beneath the first support base. The resilient component is capable of providing cushioning to the first support base is also capable of providing a full axial rotation to said upright elongated support element.

Abstract: A workstation for a user comprising a basis, an shaft pivoted on the basis, a seat pivoted on the shaft, a back rest connected to the shaft, at least one shaft piston connecting the basis to the shaft and at least one seat piston connecting the shaft to the seat. The shaft and the seat are arranged to allow a user to sit at the workstation. The at least one shaft piston and at least one seat piston are arranged to allow changing the position of the shaft and of the seat. The orientation of the shaft and the orientation of the seat are adjustable by the user.

Abstract: Dental devices with cylinders, trunnions, and limit switches, and a method are provided. The dental devices include a cylinder and a trunnion having a cavity and an outer surface. A portion of the cylinder is slidably mounted within the cavity of the trunnion, and a portion of the cylinder protrudes out of the trunnion. The limit switch is coupled to the outer surface of the trunnion, with the limit switch is operable to contact the cylinder. Separation of the limit switch and the cylinder causes actuation of the limit switch, and the actuation of the limit switch inhibits a downward movement of the device. Alternatively, the limit switch may be coupled to the portion of the cylinder that protrudes out of the trunnion, with the limit switch operable to contact the trunnion. As such, separation of the limit switch and the trunnion causes actuation of the limit switch.

Abstract: The present invention is directed toward a seatback assembly that includes a backrest comprising shapeable material and an adjustable support, the backrest being attached to the adjustable support, the adjustable support being adjustable to alter the curvature of the backrest from top to bottom and then fix the backrest in place, thus shaping the backrest.

Abstract: An armrest for a chair includes an armrest support, a sleeve movably mounted on the armrest support, a support arm mounted on the sleeve, a locking member secured in the armrest support, and a lifting device mounted between the armrest support and the sleeve. Thus, when the drive lever of the lifting device is pressed upward, the movable shaft of the lifting device is unlocked from the locking member so that the movable shaft is movable in the locking member and the armrest support freely, and the sleeve is movable relative to the armrest support to adjust the height of the support arm.

Abstract: A gear stage (10), in particular of a vehicle seat (3), is embodied as a friction wheel gear stage. The gear stage (10) includes a housing (5), a drive (12), an output (14) that is set off from the drive (12) by an excentricity (e) and at least one sphere or another rolling body (15) for the transmission of force between the drive (12) and t he output (14). According to the invention, the position of the excentricity (e) relative to the housing (5) is arranged in a spatially fixed manner and the gear stage has at least two different direction-dependent and/or shiftable gear ratios.

Abstract: 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.

Abstract: A chair backrest elevating device includes a slide base having a slide way provided with a recessed hole and a positioning rod. An adjusting unit is combined with the positioning rod, composed of a sustaining member, a movable block, a spring, a positioning block and an elastic retainer. A fixing plate unit received in the slide way of the slide base contains a fitting block and a fixing plate. A slide cover is coupled with the slide base for covering the adjusting unit and the fixing plate unit. The slide base and the slide cover are assembled on a www.backrest while the fixing plate unit is combined with a seat. When the backrest is pulled up or down, the slide base and the slide cover is also shifted to have the sustaining member engaged in different-level engage grooves of the fitting block, thus adjusting the backrest upward or downward.

Abstract: A seat or bench that provides a unique support structure to assist a person in the act of sitting upon, rising from or standing before the seat of the chair or bench, comprising a seat member having a front portion, a first side portion and a second side portion, the front portion having a front edge, two generally horizontal and elongated arms, and legs supporting the seat member, the seat configured such that the arms are adapted to provide support in front of a person standing between the arms while adjacent to and facing away from the front edge of the seat member.

Abstract: An armrest structure includes a tubular support, and an armrest having a tubular end telescopingly engaging the tubular support. A support plate engages bottom walls of the tubular support and the tubular end in a laminar arrangement. A clamping bolt slides through a top hole and into aligned holes in the laminar arrangement, with its head abutting the aligned holes. A clamping handle on a bottom of the bolt is rotatable between a clamping position tensioning the bolt to secure the arrangement, and a release position de-tensioning the bolt. By this arrangement, remaining walls of the tubular support and the tubular end are not deformed even when the clamp is clampingly pressing the adjacent sidewall sections together. An adjustable back with actuator handles at a lower edge of the back, and a seat assembly with fingers that retain an upholstery cover tight against concave areas are also shown.

Abstract: A seat adjustment mechanism, which adjusts an angle formed between first and second seat members rotatably connected to each other, includes a first link member adapted to be connected to the first seat member and including a first end rotatably supported by the first seat member, a second link member adapted to be rotatably connected to the second seat member and including a first end rotatably supported by the second seat member and a second end rotatably connected to the first link member, a drive device, and an extending and retracting device driven by the drive device and extending and retracting linearly, wherein one of the drive device and the extending and retracting device is rotatably connected to a second end of the first link member and the other of the drive device and the extending and retracting device is rotatably connected to the second seat member.

Abstract: In the case of a vehicle seat (1), in particular motor vehicle seat, a backrest (4) extending in a longitudinal direction of the backrest includes at least a first backrest shell (10) and a second backrest shell (12) in a shell-type construction. The second backrest shell (12) is displaceable and/or pivotable relative to the first backrest shell (10).

Abstract: A seat assembly (21) for a vehicle including a seat (22), a seat mounting assembly (20) mounting the seat (22) for movement along an upwardly concaved arcuate path, a backrest (25) assembly with a backrest member (23) having a lower portion (18) coupled for arcuate motion with the seat (22) and an upper portion mounted for movement in a vertically extending direction. The backrest assembly (25) further includes a recliner frame and mechanism (32, 33). A method of providing a seat assembly also is disclosed including the steps of mounting the seat (22) for movement along an upwardly arcuate path, mounting the backrest (25) proximate the seat, coupling a lower portion (18) of the backrest for movement with the seat (22) and mounting the upper portion of the backrest (23) for vertically extending movement.

Abstract: An adjusting device of a chair backrest includes a movable base, a connecting block and a positioning unit. The movable base encompasses an adjusting opening having plural continuous V-shaped grooves in two vertical sidewalls, a stopping groove and a projecting-downward portion, and two sliding rails. The connecting block is fitted in the movable base, possessing a rectangular recess. The positioning unit is installed in the rectangular recess, having two upholding feet fixed with the connecting block and respectively having a locking projection and a locking groove corresponding to each other. A spring is put between the upholding feet to elastically expand them. With the movable base fixed with the backrest and the connecting block fixed with a connecting rod, the movable base can be moved up and down together with the backrest, with the height of the backrest adjusted.

Abstract: A seat including a plurality of user support assemblies that are independently adjustable. User support assemblies, which are independently adjustable, include a head support assembly, a thoracic support assembly, and a lumbar support assembly. Moreover, the seat might include a independently adjustable seat assembly.

Abstract: A seat and a seat system for a means of transport. The seat includes a seat surface, a backrest, and an adjustable leg support and/or foot support arranged in the region in front of the seat surface. The leg support and/or foot support is configured to be divided in the longitudinal direction into two parts, and the two parts are configured to be adjustable separately.

Abstract: An adjusting device of a chair backrest includes a movable base, a connecting block and a positioning unit. The movable base encompasses an adjusting opening having plural continuous V-shaped grooves in two vertical sidewalls, a stopping groove and a projecting-downward portion, and two sliding rails. The connecting block is fitted in the movable base, possessing a rectangular recess. The positioning unit is installed in the rectangular recess, having two upholding feet fixed with the connecting block and respectively having a locking projection and a locking groove corresponding to each other. A spring is put between the upholding feet to elastically expand them. With the movable base fixed with the backrest and the connecting block fixed with a connecting rod, the movable base can be moved up and down together with the backrest, with the height of the backrest adjusted.

Abstract: A vehicle seat may include a seat back that includes an upper half corresponding to a shoulder portion of a passenger, a lower half corresponding to a waist portion of the passenger, at least one angular adjustment mechanism and at least one upper half height adjustment mechanism. The at least one angular adjustment mechanism is disposed between the upper half and the lower half and is arranged and constructed to tilt the upper half back and forth relative to the lower half to intermediately fold the seat back at an intermediate folding position. The at least one upper half height adjustment mechanism is disposed in the upper half and is arranged and constructed to vertically move the upper half relative to the intermediate folding position.

Abstract: A motorcycle backrest assembly includes a pair of side plates each for mounting on either the left or right side of the motorcycle's rear fender. A receiver is securable to each plate for adjustably receiving one of two side rails depending from a backrest. Each receiver is angularly adjustable to vary the position of the backrest. The entire assembly can be quickly removed from the motorcycle and stored, if desired.

Abstract: A support apparatus for the operator of a vehicle for sitting, semi-sitting, or leaning, includes a seat support mounted on a base, the seat support having a compound convex curvature on an upper surface defining a rear sitting portion, a central semi-sitting portion and a forward leaning portion, and a horn projecting from the central portion to provide lateral support and vertical support to the operator.

Abstract: A traction table (200) include a frame having a base-frame portion (202) rotabably coupled to a top-frame portion (250) at a pivot point 214, a seat back portion (208) coupled to the top frame portion, and a seat-bottom (204) slidably coupled to the frame top portion. The seat-bottom can rotate about a pivot point (262) and tilt about at least one axis (260 and/or 264). The seat-bottom can further slide forwards or backwards relative to the top frame portion. The traction table can include an optional neck piece (210) coupled to the top frame portion that can move parallel relative to the seat back portion and constructed to rotate, tilt side to side or forward and backward. The traction table can include at least one actuator motor (245 or 244) for moving the seat-bottom or neck piece relative to the top-frame portion and a controller (212) for controlling such actuator(s).

Abstract: The present invention relates to task chairs that support the body of the user in healthy positions while the user performs various tasks over extended sitting periods and that provide independent and independently adjustable support to the lower and the upper back.

Abstract: An abdominal support swivel chair is comprised of a support base with a plurality of leg arms having casters and radiating about the base frame in a common horizontal plane. An adjustable center post assembly extends vertically from the center of the support base and along a central vertical axis. A seat is secured to a frame connected at a top end of the center post. The seat has a rear buttocks support section and a central narrow frontal projecting section merging therewith through opposed side thigh cavities. An abdominal support pad is secured to an adjustable support arm connected to the saddle frame. The support arm has an upper securing end section adapted for securement of the abdominal support pad and to position same inclined forwardly. The adjustable support arm extends forwardly of the frontal projecting section and aligned therewith and has an adjustable connecting mechanism to position the abdominal support pad for the comfort of a user person above the frontal projecting section.

Abstract: High chairs and methods to use high chairs are disclosed. An example high chair includes a frame and a seat, wherein the seat defines a slot and is shaped to funnel spills toward the slot.

Abstract: A chair includes a lower back frame, a back construction, including a back support attached to the lower back frame, a cushion assembly attached to the back support and a clip wedgingly engaged between the back support and the cushion assembly. The cushion assembly further includes an inner shell which includes two or more apertures and a hook extending downwardly and outwardly from each aperture. The clip further includes at least one angled ramp and at least one stop. The angled ramp is configured to allow the hook of the inner shell to slide through the angled ramp and the stop is configured to suspend sliding of the hook. Methods of assembling a back construction are also provided.

Abstract: A manipulable lumbar support adapted for use with a seat upright defining a first surface condition, includes a structure disposed within the upright and presenting a first configuration, and an actuator employing an active material element configured to cause the structure to achieve a second configuration when activated.

Abstract: An automobile seat comprises a replacement adjustable back rest and an adjustable head and shoulder rest. Both the back rest and the head and shoulder rest are supported on the existing seat pan for independent vertical and angular adjustment.

Abstract: A vehicle seat can include a seat back and a head rest. The seat back includes an upper half corresponding to a shoulder portion of a passenger, a lower half corresponding to a waist portion of the passenger, and an head rest height adjustment mechanism. The seat back upper half is connected to a structural component of the head rest or a movable component of the head rest height adjustment mechanism, so as to be vertically moved relative to the seat back lower half when the head rest height adjustment mechanism is actuated.

Abstract: An office chair is provided with includes a chair arm assembly on each opposite side thereof for supporting the arms of a user. The arm assemblies each include a latching assembly to permit adjustment of the height of an arm cap thereof while maintaining the arm cap at a selected elevation. The latch assembly is engageable with an inner liner provided within a support post. Further, the armrest assembly has a plurality of interconnected and relatively movable plates which permit adjustment of the angular orientation of the arm cap along with adjustment of the arm cap in the front-to-back direction and the side-to-side direction.

Abstract: Provided is a plastic fastening mechanism including an intermediate main body having an axial, shouldered first through hole, two wings each having an axial, shouldered second through hole, and two flexible interconnections each formed between the wing and the main body; and elastomeric first and second elements each shaped to conform to the rear of either the first or second member. The main body is threadedly secured to a chair J-bar and the wings are threadedly secured to chair backrest. The main body of each of another two plastic fastening mechanisms is threadedly secured to the J-bar, and the wings thereof are threadedly secured to chair headrest. Moreover, there are provided two elastomeric mechanisms shaped to conform to the rears of the fastening mechanisms. The elastomeric mechanism includes an intermediate, hollow member, two side receptacles, and second interconnections each formed between the hollow member and either receptacle.

Abstract: An adjustment device includes a seat brace including lower and upper support plates fixed thereon, respectively. A back brace includes a second end tightly disposed between the lower and upper support plates of the seat brace, with friction generated between the lower and upper support plates and the second end of the back brace, respectively. A locating portion is defined on the second end of the back brace. An adjustment unit includes an end pivotally connected to the seat brace and another end opposite to the actuated element and exposed outside of the adjustment device for use. An actuated element is mounted on the adjustment unit relative to the locating portion and connected to the locating portion.

Abstract: An adjustment mechanism for use with a chair. The adjustment mechanism is for use on a chair that has a base assembly with an extending pedestal, a seat, a chassis, and a back. Specifically the adjustment mechanism is for use on a chair that utilizes a J-back bar that couples the chassis to the back. The J-back adjustment mechanism allows the angle of the J-back bar and thus, the back to be changed throughout a range of motion. The J-back adjustment assembly includes a casing and an adjustment portion, wherein rotation of the adjustment portion changes the inclination of the J-back bar and, thus, the back with respect to the seat.

Abstract: To save space it is often not possible to provide a comfortable seat beside a bed, for example for a second flightdeck crew. Normally, sitting on a bed is not comfortable for extended periods of time. The present invention states a backrest arrangement which can be changed from a foldaway position to a seating position. The backrest arrangement can be hinged to a wall. In foldaway position, the distance between a lower region of the backrest and the essentially vertical surface is shorter than in the seating position. In this way the backrest arrangement can for example be attached to a wall beside a bed; in the seating position the backrest arrangement provides a comfortable and safe seat.

Abstract: A chair includes a base, a seat mounted on the base, a support bracket mounted on the seat, an upper backrest having an upper portion pivotally mounted on the support bracket, and a lower backrest pivotally mounted on a lower portion of the upper backrest. Thus, when a user's back is rested on the upper backrest and the lower backrest, the upper backrest and the lower backrest are pivotable relative to the support bracket to rest on the user's upper and lower backs respectively to support the user's whole back snugly and completely to prevent the user's lower back from depending in the air so as to provide a comfortable sensation to the user.

Abstract: Adjustment device for chairs, comprising a back support capable of rotating around a shaft fastened to a support base, said support for the backrest being provided with a blocking plate provided with a plurality of openings, an insert being movable to engage and disengage said openings, and being provided with means to limit the travel of the insert capable of sliding in a defined track in the support base, and actuator being provided, operated by a rod connected to a handle that can be operated by the user, said actuator being movable by a release position to a lock position and vice-versa, in which said insert is selectively engaged in one of said openings, said actuator being connected to said insert.

Abstract: A vehicle seat having a seat frame that in its rear region is adapted to be releasably arrested on structural elements by a left arresting device and a right arresting device, which are releasable separately relative to one another, preferably via different displacement processes. A back rest frame is preferably releasably arrested on the seat frame via a freely pivotable device, such as an arresting control. An actuating device, especially an actuating handle, that is activatable by the user is preferably provided for releasing the freely pivotable device. A first one of the arresting devices can be releasable by the actuating device, whereby different displacement paths can be provided for the release of the freely pivotable device and of the first arresting device. One or more driver systems can be provided for forming idle paths or free play.

Abstract: A backrest mechanism for a stand-up rider operator's platform in an industrial vehicle, in which an operator operates the vehicle while standing, has a support portion and a support holder. The support portion has a backrest portion for supporting a back of the operator and a seat portion for at least supporting buttocks of the operator. The support portion supports the operator by either of the backrest portion and the seat portion. The support holder is located on a rear side of the vehicle from the operator's platform. The support holder holds the support portion so that the support portion is detachable from the support holder.

Abstract: A seat lock device for fixing a rotatable seat back of a rear seat to a vehicle body includes: a striker which is disposed in the vehicle body; a lock mechanism which includes a base plate which is mounted to a seat back frame inside the seat back and has an engagement groove engaging with the striker, a latch which holds the striker in the engagement groove, a ratchet which maintains the latch in a lock direction and a release lever which moves the ratchet in a lock release direction; and a rod spring of which one end is attached to the seat back frame and of which the other end is bowed while coming into contact with the striker during a locking operation.

Abstract: Disclosed are child seats with adjustable features to accommodate a child. Specifically, a child seat with adjustable headrest unit, a child seat with adjustable backrest unit, a child seat with adjustable armrest unit, a child seat with adjustable lap depth, a child seat with a softgoods attachment, and a method of attaching a softgoods attachment to a child seat.

Abstract: A seat device for a chair having a lumbar support or a seatback is provided. A lower portion of the lumbar support (or seatback) is formed as a shaft having an external teeth portion for positioning pin lugs of a base and fixed blocks. A movable block is joined with one of the fixed blocks. An elastic member is positioned between inner holes of the external teeth portion and an internal teeth portion of the movable block. The fixed blocks are secured by outer covers. A lifter is pivoted to the outer cover secured with the movable block. The lumbar support (or seatback) is separated into a plate including a ladder-type groove and sliders and a pad jointed with a board on the back having a latch member and sliding grooves. A pull bar extends from the board. The angle and height adjustable lumbar support (or seatback) is therefore achieved.

Abstract: In order to allow use of the seat belt in both positions of use of a reversible seat, an articulated end fitting is proposed for connecting a seat belt to the reversible seat, with a connecting part (51) and a projecting elongate lug (53) connected thereto for suspending a seat belt, the elongate lug (53) being pivotable relative to the connecting part (51) about three different axes (A, B, C).

Abstract: A collapsing truss that completes a four-bar mechanism of a vehicle seat coupled to a vehicle floor. The vehicle seat includes a seat back coupled to a cushion structure via the collapsing truss which incorporates a pivot and a latch which engages on a pin. The collapsing truss includes a floor bracket coupled to the vehicle floor. A seat back bracket is coupled to the seat back and floor bracket. A cushion bracket is pivotally coupled to the cushion structure, the floor bracket, and the seat back bracket. The joints of the collapsing truss are defined by the seat back pivot, the cushion back/seat back bracket pivot, and the latch engagement pin. The seat back moves about the pivot when the collapsing truss operates.