Abstract: An ergonomic support for maintaining a user in an erect sitting posture, including a seat, a knee brace and a backrest, the position of which are adjustable relative to one another. Also set forth is a self-contained ergonomic chair which includes a frame to be supported on a floor, a seat supported to the frame, a backrest supported to the frame to the rear of the seat, a knee brace supported with respect to the frame to be positioned forward of the seat, and a manual adjustment mechanism operable by a person seated in the chair to adjust the forward and rearward spatial relationships of the seat, the backrest and the knee brace with respect to each other.

Abstract: An office-type chair which includes a seat assembly and back assembly that are pivotally supported on a chair base or pedestal to support a user thereon. To increase the comfort of the user, the seat assembly is tiltable forwardly and rearwardly by way of a tilt control mechanism while the back assembly thereof is tiltable laterally from side to side, i.e. in the leftward and rightward directions by way of a back torsion mechanism.

Abstract: Vehicle seats are disclosed including a seat, a backrest interconnected with the seat, a guide for displaceably removing the backrest along the seat from the rear to the front of the seat, and a lock for locking the backrest in an arbitrarily selected position between the rear and front portions of the seat.

Abstract: An office-type chair which includes a seat assembly and back assembly that are pivotally supported on a chair base or pedestal to support a user thereon. To increase the comfort of the user, the seat assembly is tiltable forwardly and rearwardly by way of a tilt control mechanism while the back assembly thereof is tiltable laterally from side to side, i.e. in the leftward and rightward directions by way of a back torsion mechanism.

Abstract: An adjustable chair having a seatback combined with a cushion and a backcover, a seat combined with a pad and a pad casing, a pair of armrests mounted at two sides of the seat, a column bracket with casters supporting the seat, and an adjustment body received in the seat and the seatback. Because the adjustable chair has a height adjustment device, a seat forward-pitch adjustment device, a seat driven member, a seatback lateral adjustment device, a seatback backward-pitch adjustment device, a seatback height adjustment device, and a waist-supporter attitude adjustment device, the height, the inclination of the seat, the seatback, and the waist-supporter and also the pitch of the seatback are adjustable. The adjustable chair further has a pair of controlling members mounted at two sides of the seat and each has a plurality of buttons and cables connected to the adjustment body, such that the movement of the adjustment body is controlled.

Abstract: A wheelchair having an ergonomically designed seat assembly is provided. The seat assembly includes a backrest subassembly connected to a seat frame The backrest subassembly includes a backrest frame, at least one resilient pivotal member connected to the backrest frame, and a backrest connected to the at least one resilient pivotal member such that the backrest is capable of resilient pivotal flexing about a transverse horizontal axis. A seat is pivotally connected to the seat frame such that the seat is capable of pivotal tilting about a transverse horizontal axis relative to the seat frame and independent of the backrest subassembly. At least one resilient member is disposed between the seat frame and the seat so as to allow resilient relative pivotal tilting therebetween. Two leg rests are pivotally connected to the seat frame such that the leg rests are capable of pivoting about a transverse horizontal axis relative to the seat frame.

Abstract: An office chair is composed of a backrest, a seat, a support leg for supporting the seat, a sliding device, a locating device, and a control device. The sliding device includes two frame members and two sliding members. The locating device includes two toothed plates, two rotary plates and two elastic rods. The control device includes a press plate, an elastic rod, and a control rod. The backrest of the office chair can be adjusted back and forth to give a constant support to the back of an office worker seated on the office chair.

Abstract: A chair includes a base to which a seat member is disposed, an L-shaped connecting plate extending from the base and a back member disposed to an upper end of the connecting plate. A mediate member is disposed to the base 10 and has two guides and each guide has a first slot defined longitudinally therethrough. The connecting plate has a transverse bar fixedly connected to a lower end thereof and the transverse bar is slidably received between the two first slots. An operation rod extends through the mediate member and an aperture defined in the lower end of the connecting plate so that the connecting plate is slidable and pivotable within the two first slots when removing the operation rod from the aperture of the connecting plate.

Abstract: A chair control is shown for adjusting the horizontal position of a chair armrest or a chair back. A support bar, upon which the chair armrest or back is mounted, a slidably located in a mounting bracket usually attached to the underside of the chair seat. The mounting bracket includes a first pivot pin spaced transversely of the support bar, and a rigid lever mounted on this pivot pin, the pivot pin acting as a fulcrum. The rigid lever includes a first end portion that pivots into locking engagement with the support bar and a second remote end portion. An over-the-center toggle linkage is coupled to the lever second end portion to rotate the lever about the pivot pin to engage the support bar and lock it in position.

Abstract: Several locks for locking a seat back relative to a seat bottom are disclosed. The locks include members which are moveable into notches in a rod to lock the rod within a block. In one embodiment, an axially moveable pin forces a ball into a notch in the rod to lock the rod at a desired location. In a second embodiment, an axially moveable tooth is selectively moved into or out of a notch in the rod. In a third embodiment, a rotating cam forces a lock seat onto the rod to lock the rod at a desired location. Finally, a power driven embodiment is also disclosed.

Abstract: An adjustable furniture device having at least one adjustable longitudinal support element including a female section and a male section in telescoping engagement, with positionally-adjustable devices interposed between the male and female members to permit longitudinal adjustment of the support element, and thereby adjustment, for example, of height.

Abstract: An anti-thrust seating system and low profile, adjustable back system primarily intended for use in a wheelchair. The anti-thrust seating system includes a base seating member with a forward section to support the user's thighs and a rearward section to support the user's buttocks including the ischial tuberosities. The upper surfaces of the forward and rearward sections meet to form an edge extending across the base seating member. The upper surface of the rearward section has two portions which form a first step face or anti-thrust barrier to the user's ischial tuberosities. The seating system further includes at least one separate step means that can be removably positioned adjacent and rearwardly of the first step face wherein the separate step means has a second step face. The separate step means also has an upper surface which serves to effectively extend the thigh supporting surface or shelf rearwardly.

Abstract: A support mechanism supports a seat back 14 on a seat frame 12 and includes a tongue 18, 20 and groove 22, 24 connection for mounting the seat back 14 to the seat frame 12 by sliding the tongues 18, 20 into the grooves 20, 22. A channel member defines the upper rail of a seat track with inner and outer sides 26 and 28 and a top 30 extending between the first 26 and second 28 sides. The tongues 18 and 20 extend in opposite directions and are coplanar with the top 30 of the channel member. A pair of brackets 32 define the grooves 18 and 20 which are disposed about the tongues 22 and 24 of the channel member to limit movement between the brackets 32 and the channel members in a direction transverse to the tongues 18, 20 and the grooves 22,24. Once the brackets 32 are slid onto the channel members, a rivet 42 is inserted through each bracket 32 and through the top 30 of the associated channel for preventing the sliding movement of the brackets 32 along the channels.

Abstract: A backrest adjusting structure including a backrest having a retractable shaft transversely disposed near a bottom side thereof and a stop adapted for stopping the retractable shaft from rotary motion, the retractable shaft having two fixed gears at two opposite ends; two guide tubes disposed in parallel and spaced from the backrest at two opposite sides, each of the guide tubes having a longitudinal series of locating holes; fasteners adapted for securing the guide tubes in place; and two sliding sleeves respectively and slidably mounted around the guide tubes, each of the sliding sleeves having an internally toothed socket raised from the periphery and engaged with one of the fixed gears, and a radial through hole adapted for connecting to one of the locating holes of the corresponding guide tube, a locating rod balanced on an upright lug and forced by a spring into engagement with the radial through hole and one of the locating holes of the corresponding guide tube, and a press button controlled to release

Abstract: An adjustable back system for releasable attachment to spaced-apart substantially vertical wheelchair frame posts (52). The back system includes a relatively rigid shell back (36) formed to extend transversely between the posts (52) for support of a user's back, a plurality of post-engaging assemblies (50) coupled to shell back (36) by a plurality of independently adjustable coupling assemblies. The post-engaging assemblies (50) including an upper pair of post-engaging assemblies extending transversely from opposite sides of shell back (36) and a lower pair post-engaging assemblies extending transversely from opposite sides of shell back (36) below upper post-engaging assemblies.

Abstract: An anti-thrust seating system and low profile, adjustable back system primarily intended for use in a wheelchair. The anti-thrust seating system includes a base seating member with a forward section to support the user's thighs and a rearward section to support the user's buttocks including the ischial tuberosities. The upper surfaces of the forward and rearward sections meet to form an edge extending across the base seating member. The upper surface of the rearward section has two portions which form a first step face or anti-thrust barrier to the user's ischial tuberosities. The seating system further includes at least one separate step means that can be removably positioned adjacent and rearwardly of the first step face wherein the separate step means has a second step face. The separate step means also has an upper surface which serves to effectively extend the thigh supporting surface or shelf rearwardly.

Abstract: An integral backrest and storage compartment adapted to be attached to a motorcycle, scooter, or moped. The backrest and storage compartment includes a storage compartment base member adapted to be at least partially supported by an upper surface of a passenger seat of a motorcycle, scooter, or moped. Two storage compartment side members are attached on opposite sides of the storage compartment base member. A storage compartment front member is attached to the storage compartment base member and the storage compartment side members on a side of the storage compartment. A storage compartment rear member is attached to the storage compartment base member and the storage compartment side members. A storage compartment cover is articulately joined to one of the group consisting of: the storage compartment rear member, the storage compartment front member, and the storage compartment side members. At least one mounting strap is adapted to secure the storage compartment to a motorcycle, scooter, or moped.

Abstract: An adjustable chair is disclosed having at least one pair of front or back legs and at least one other leg. Each leg of the pair includes a hollow sleeve and a strut telescopically moveable within the sleeve to shorten or lengthen the leg. A flexible compression member is restrained within the sleeve and connected at one end to its respective strut and at the other to an adjustment means for selectively adjusting the length of each leg.

Abstract: A combination child's seat and armrest assembly includes an upper portion and lower portion. The portions are pivotably attached to each other at the front of the assembly, thereby providing for the raising and lowering of the upper portion. In this lowered position, the assembly functions as an armrest for the driver and passenger. In its raised position, a child may be seated facing front, or the bottom side of the raised upper portion. This positioning securely fits the child between the raised upper portion and the seat back of the vehicle's seat. A bed telescoping between the rear seat and the front seat may also be provided. A front bench seat includes three sections, two laterally movable end sections and a central backrest section. For entry into or exit from the back seat of the vehicle, one or the other of the end sections is moved inward toward the central section. The central section is comprised of a back half and a front half.

Abstract: An apparatus is provided for adjusting the position of a backrest relative to a chair seat. The backrest includes an elongated stem having a curved lower portion. Preferably, a spring operably engages the stem to bias it in an upward direction. A housing is adapted to slidably receive the curved portion of the stem and guide the spring. A latch mechanism is adapted to engage the stem to lock the backrest in a desired position, and an actuator member is adapted to move the latch mechanism between an engaged and disengaged position. In operation, the latch mechanism is disengaged to allow the backrest stem to move in a curvilinear path to a desired height and corresponding angular position, and reengaged to lock the backrest stem in said position.

Abstract: A mechanism for adjusting the position of an armrest relative to a seat includes a support member having the armrest mounted on a first end thereof and a locking track mounted on a second end thereof. A mounting plate assembly is fixed to the seat for slidably receiving the support member and the locking track. A leveraged clamping linkage is movably mounted to the mounting plate assembly and is selectively engageable and disengageable between the locking track and the mounting plate assembly for permitting independent adjustment of the support member and armrest in various positions relative to the seat.

Abstract: The back support for motorcycles was designed for use on any type of motorcycle on the market and, it will consist of two basic parts.The first part, called the base or main support, which can be made up of a single piece of steel or it could be 2 straight single steel bars, those of which will be attached to the right and left of the posterior motorcycle frame. Those sections will have, at the middle area over the right and left sides, an open track in order to receive the 2nd part.

Abstract: A back-rest hinge for a vehicle seat that has a seat support and a back-rest. The back-rest hinge has a swivel joint operatively interconnecting the seat support and the back-rest for variable inclination of the back-rest relative to the seat support. A locking mechanism permits adjusting an angle of inclination of the back-rest in relation to the seat support. A locking lever is hinged to the back-rest at a hinge point spaced from the swivel joint along a lengthwise direction of the back-rest. The locking lever has a locking portion which extends from the hinge point in a direction of the seat support that intersects a front edge of this seat support. The locking mechanism includes an interlock mechanism on the seat support, which interacts with the locking portion, and an activation device. The interlock mechanism is positionable between one position in which it is cooperatively engaged with the locking portion and another position in which it is disengaged from the locking portion.

Abstract: An adjustable flat-back floor sitter chair comprising a base plate formed in generally rectangular configuration but formed with a trapezoidal leading edge, a pair of parallel side walls extending upwardly from the parallel side edges of the base plate, the side walls being formed with longitudinal slots at various elevations parallel with the side edges of the base plate, a back plate having a lower edge in sliding contact with the upper surface of the base plate and having side edges in sliding contact with the interior faces of the side walls, the back plate being provided with a pair of outwardly projecting bolts extendable through the slots in the side walls with wing nuts for locking the bolts and the back wall in a preselected orientation along the length of the base plate and a plurality of rows of laterally extending apertures formed in the back plate at various elevations adjacent to its side edges.

Abstract: A sofa or armchair with adjustable sitting depth (7-8), which has a back rest (1), which can be detached and taken off and the distance of which can be changed and thus, the sitting depth can be changed, and to which belongs an adjusting and locking device (2), with which a stepless or adjustment with steps are locked. E.g. the back of a sofa is traditionally fixed and almost all adjustment possibilities have been different solutions by cushions, which however, are not always satisfying when thinking of needs of different people. With this solution people of different lengths can adjust the sitting depth of a sofa or armchair fitting to themselves, which at the same time makes the sitting more comfortable and along with that reduces likelihood of back problems. Also the adjustable back rest gives new dimensions and possibilities for furniture design and product development.

Abstract: A sofa bed has a pair of arm rests that support a pivotable seat-back. The seat back is pivotally connected to a pair of U-shaped saddles that are positionable on upper edges of the arm rests, and movable forwardly or rearwardly on the arm rests.

Abstract: A support for the back of a rider of a motorcycle having a seat for supporting a rider within a given seating range along the seat, includes a back rest, and a device connected to the back rest for continuously biasing the back rest against the back of the rider regardless of the posture of the rider and the position occupied by the rider within the given seating range along the seat.

Abstract: A laterally retractable and longitudinally foldable chair having a plurality of transverse struts connected with a plurality of longitudinal support members to form hingedly connected sub assemblies of a chair frame for supporting an individual. Each strut is provided with adjusting means. Each adjusting means has a locking means associated therewith which allows for selective adjustment of the width of said chair between a retracted, or compact, configuration and an expanded, or in use, configuration. The adjusting means is comprised of a projection and cooperating aperture in each said transverse strut which allows one to releasably lock the chair in the expanded or retracted position as desired. The novel chair further comprises a plurality of hinge members which hingedly connect the longitudinal support members and which allow the individual sub assemblies to be folded upon themselves to futher reduce the collapsed dimensions of the chair.

Abstract: By adjusting two telescoping-type interengaging shiftable parts for each of two frame bars (3,4) of a support frame (2) of a lightweight wheelchair (1), the sitting position of the same can be adjusted with respect to the seat surface (5) and with it the adjustment of the center of gravity can be dynamically adjusted with respect to the user. Additional adjustment possibilities by means of each support element (17) at the right and left sides of the seat surface (5) with respect to the rear axle as well as corresponding clamping devices for the front wheels (9,10) on the frame (2) allow a very precise user-compatibility in this lightweight wheel chair. Additionally a backrest (6) can be collapsed with respect to the seat surface (5) by means of handles (20) pivotally connected with the frame bars, to thereby permit the lightweight wheelchair (1) to be compactly folded up for transportation purposes.

Abstract: A front seat assembly for motor vehicles is supported at the front by a first support which includes two lower guides in which support members are mounted for longitudinal movement. The latter are, in turn, engaged at their upper ends for movement relative to upper guides fixed to the front part of the seat cushion. The support members can be locked in the lower guides in a rearwardmost position while the position with respect to the upper guides can be chosen from a plurality of fixed adjustment positions. The rear part of the seat is supported by two pivotable arms which, when the seat is moved towards a forwardmost position, cause the cushion to be raised gradually, so that the visual point is substantially maintained. To facilitate access to the rear seats, the backrest can be tipped forwards by disengagement of a retaining member which hold the backrest in a fixed position relative to the cushion and of the retaining member which hold the support members within the lower guide.

Abstract: A seat back adjustment unit including a seat attaching plate which is fixedly secured to the seat of a chair and a back mounting plate which will have mounted thereon the customary seat back. The seat attaching plate has an upwardly and rearwardly curved portion on which there is mounted an adjustment unit. The adjustment unit in turn carries a lower generally horizontal portion of the back mounting plate. The adjustment unit includes a housing which is guidedly mounted on the curved rear portion of the seat attaching plate while the same housing has guidedly received therein the lower portion of the back mounting plate. The adjustment unit includes within the housing thereof a reduction gear drive unit which includes two driven member interlocked by pin and slot connections to the seat attaching plate and the back mounting plate for selective relative movement between the plates and the housing of the adjustment unit.

Abstract: The present invention provides a chair with a seat cushion thickened toward the front thereof, and thinned toward the rear, positioned on a support frame having a pair of legs extending down to a pair of curved rails which flair apart from one another toward the rear thereof. These rails extend forward sufficiently that the chair can be tilted forward along the rails on a horizontal surface until the top of the seat cushion slopes downward, and these rails extend rearward sufficiently such that the chair can be tilted rearward therealong until the seat cushion top again slopes downward. The backrest extending from underneath the cushion, and then upward therefrom, carries a cushion which is thickened toward the top thereof and thinned toward the bottom. This cushion is adjustably positionable up or down along the backrest to be available to be positioned against a user's lumbar region depending on the length of the user's back.

Abstract: A snowmobile body having an improved seat construction for a snowmobile vehicle having a built-in backrest which is inclined at a small acute angle with respect to the vertical for providing support for the driver in the lumbar and thoracic regions when assuming a slightly reclining disposition. The seat back may be slidably adjustable relative to the frame of the vehicle and the steering wheel or handlebars use to control the front steering skis may also be adjustable to accommodate drivers of differing physical size.

Abstract: A seat adjusting apparatus for a saddle-type vehicle having a seat provided with a backrest is disclosed. It is provided with an adjusting mechanism for adjusting the state of the backrest, such as the longitudinal position or the tilting angle of the backrest with respect to the seat. A manual operating apparatus connected to this adjusting mechanism and adapted to drive the adjusting mechanism is disposed on the side of the seat below the backrest. The rider can freely adjust the position, angle, etc. of the backrest by operating the manual operating apparatus while maintaining his attitude astride the seat. The backrest may be provided on both sides with waist holding members which are opened and shut sidewards by operating the manual operating apparatus.

Abstract: A wheelchair fitting apparatus has a laterally adjustable back section, a vertically adjustable footrest and a pair of armrests which are adjustable both vertically and laterally. A back section extender allows vertical adjusting of the back section in relation to the seat section. Suitable indicia, for example a numbered grid on the seat section, the back section and the foot rest, as well as numbered intervals on the front legs of the chair, are provided to facilitate taking of measurements of an individual. The adjustable chair is preferably made of a transparent material to allow pressure and shear, among other things, to be readily observed through the chair. The chair may be adjusted to conform to the basic dimensions of a custom wheelchair for an individual, and measurements may be easily read off of the numbered grid and the numbered intervals on the front legs.

Abstract: A wheelchair fitting apparatus has a laterally adjustable back section, a vertically adjustable footrest and a pair of armrests which are adjustable both vertically and laterally. A back section extender allows vertical adjusting of the back section in relation to the seat section. Suitable indicia, for example a numbered grid on the seat section, the back section and the foot rest, as well as numbered intervals on the front legs of the chair, are provided to facilitate taking of measurements of an individual. The adjustable chair is preferably made of a transparent material to allow pressure and shear, among other things, to be readily observed through the chair. The chair may be adjusted to conform to the basic dimensions of a custom wheelchair for an individual, and measurements may be easily read off of the numbered grid and the numbered intervals on the front legs.

Abstract: The invention relates to a back-seat in a station wagon. The back-seat has a seat-back which is divided into a lower portion joined to a seat-bottom and an upper portion displaceable relative to the seat-bottom. The upper portion is joined to horizontal rails which engage fixed rails at the sides of the cargo space. The displaceable rails support an upper floor, which when the upper seat-back portion is in a forwardly displaced position forms a forward extension of the cargo space floor.

Abstract: A chair assembly intended for use when taking X-ray pictures includes a chair and wheels for rotating and moving the chair relative to a carriage structure in the directions of the X- and Y-coordinates. Movement in the direction of these coordinates is effected by two guide frames provided with guides. A separate support frame provided with castors is arranged on the seat parts of the chair to prevent the chair from toppling or tipping. The castors of the support frame are normally located at a small distance from the underlying support surface, so as not to impede rotational and coordinate movements of respective chair members. Chair movements are controlled by a stirrup-like control bar having provided in the central portion thereof other control parts for activating the release of locking parts which lock the chair components against rotary movement and movement in the direction of the coordinates.

Abstract: In a split rear seat arrangement, a pair of seat backs are mounted for pivoting movement about an upwardly extending pivot axis. This arrangement provides that the seat backs, rather than being tilted forwardly onto the floor panel, are adapted for sideward swinging movement to a point where they abut against the side panel of the motor vehicle.

Abstract: A back support control mechanism for a chair or the like is provided for a back support movable toward and away form a seat. Adjustable positioning of the back support with respect to the seat in an infinite number of positions in a range of movement of the back support is provided through use of a channel member fixed with respect to the seat and a pressure pad positioned within the channel member and fixed with respect to the back support. The pressure pad slides within the channel member, and a lever is coupled to the pressure pad through a spring plate.

Abstract: A convertible couch of a generally conventional size which may be readily converted into a single or twin bed assembly. Rollers are provided beneath the extending arm members of the back couch portion, the rollers being engaged with rail members disposed therebeneath on the horizontal cushion section to facilitate rolling of the back support member with respect to the lower cushion section. A locking latch is provided at the forward end of the arm members to lock the respective members in the desired position.

Abstract: An adjustable back folding seat is disclosed. A connecting rod from the back to the seat carries the axis of folding of the back, and another rod carries a bolt for immobilization of the back in use position. A bar for connecting rods ensures the longitudinal adjustment of the back with respect to the seat.

Abstract: A convertible seat-bed in which a hinged connected seat frame and back frame are supported on a base structure and interconnected by a plurality of articulated control members which coact to control the movement of the seat frame and back frame between a seat forming position in which the seat frame extends generally horizontally and the back frame extends generally in an upright position, and a bed forming position in which the seat frame and the back frame extend horizontally in a generally coplanar relationship, the controlled movements of the back frame being such that the path of movement of the top edge portion of the back frame, during conversion from the seat forming position to the bed forming position and vice versa, is confined to a substantially vertical plane.

Abstract: An adjustable and convertible piece of furniture for accommodating single or multiple persons in multipositions. The piece may comprise a chair, couch, bed, or recreational support of novel configuration facilitating face to face conversation among several persons sitting, lounging, game playing, TV viewing, snacking, sleeping, or participating in other recreation.A unitary frame supports a cushioned horizontal surface above the floor or ground on a plurality of legs. The frame carries inner and outer tracks depending from its under side, therefrom, with the tracks being outboard of the legs, in spaced apart relation to each other. The tracks support a plurality of backrests, independently positionable along the border of the frame, via outwardly protruding cantilever means extending upwardly as vertical supporting means, in turn carrying horizontal backrest members at levels above the elevation of the cushioned surface. The space above the cushioned surface is otherwise unobstructed.

Abstract: A backrest device for a motorcycle rider that may be positioned forward to provide a backrest for one rider who is the operator of a motorcycle, and may be swingably repositioned to provide a backrest for a passenger who rides in tandem with the operator on the seat of the motorcycle. The backrest device has a cushioned backrest and a single pair of arms pivotally secured at opposite ends to the backrest and to an upright of a sissy bar. In a forward or extended position, a snubber prevents further backward tilt of the backrest. In a rearward or collapsed position, locking means secures the arms to the upright of the sissy bar.

Abstract: Apparatus for adjusting a back support of a chair which includes a bracket through which the back support slides. A position stop of flexible sheet material is mounted adjacent to the back support. A stop member is included on the back support, while the position stop includes apertures therein. The stop member is engaged in one of the apertures to lock the back support in position. To move the back support, the position stop is flexed to a disengaged position in which the stop member is free from the apertures. After being moved, the position stop is allowed to return to the engaged position in which the stop member is engaged within another aperture.

Abstract: A back cushion assembly for a chair, including a back cushion portion on which is mounted a central, longitudinally disposed spine support cushion. A transversal lumbar support cushion is adjustably mounted on the back cushion portion in a position below the longitudinally disposed spine support cushion, for selective adjustment, up and down longitudinally of the back cushion portion, and toward and away from the back cushion portion.

Abstract: A longitudinally and angularly adjustable back rest assembly capable of being removably mounted on a motorcycle that has a rearwardly disposed frame portion that supports a second U-shaped frame that is secured to the base portion of an elongate seat. The seat is of sufficient length to support a single rider or a rider and a passenger. The back rest assembly may occupy any one of a number of longitudinal positions relative to the seat, and may be angularly adjusted when in any one of these positions. The back rest may accordingly be adjusted for use by either a single rider when he straddles the seat or a passenger when he occupies a like position rearwardly of the rider.

Abstract: A new and improved sissy bar for a motorcycle which has a movable portion so that a single rider on the motorcycle can use it as a conventional sissy bar or can position it immediately behind him for use as a backrest. If the rider has a passenger, he can position it for the comfort of the passenger. Preferably the slidable portion of the sissy bar is slidably mounted on a support bar which is attached to the frame of the motorcycle. When used as a backrest, it is slidably positioned relative to the seat to the position that the operator desires, and locked into place. A variation also permits the operator to adjust the tilt for maximum comfort. The device is simply constructed and easy to operate with a minimum of moving parts.

Abstract: A chair or wheelchair for infirm patients, principally comprising a frame for the support of a seat, a backrest, arm- and feet-supports, in which the seat is rotatably mounted in the frame, the backrest is rotatable in a plane at right angles to the seat and likewise can be moved parallel to the seat, the arm-supports can be slidably moved in two directions extending at right angles to each other, and the feet-support is rotatable around a hinge at the front side of the seat. The seat has a sleeve at its lateral sides provided with an ear to which a tap is fixed, which tap is supported in an upright post of the frame, whereas at the rearward side of the seat a plunger of a pneumatic spring is secured, the cylinder of which is rotatably mounted to the frame.