Abstract: A system of nestable chairs for use in a work environment is disclosed. The system includes a plurality of chairs. Each chair includes a base, a support coupled to the base, and a seat assembly coupled to the support and adapted for pivotal movement and for vertical adjustment with respect to the base. The base of a first chair of the plurality of chairs is configured to allow for nesting within the base of a second chair of the plurality of chairs. A chair for use in a work space or the like is also disclosed. The chair includes a base having a nesting portion and a nested portion, a support coupled to the base, and a seat assembly coupled to the support and adapted for pivotal movement and for vertical adjustment with respect to the base. The nested portion of the base is configured to allow for nesting within the nesting portion of the base. The chair may also include a support in the form of a pedestal coupled to the base.

Abstract: This frame for a seat carrier of a vehicle seat is provided with a left and a right side part (20, 22) and with a left and a right front swiveling prop (52, 54). The swiveling prop (52) is hinged in the front area of the left side part (20) and the right swiveling prop (54) in the front area of the right side part (22) and an adjusting device is provided by means of which the incline of the two swiveling props (52, 54) may be adjusted. One swiveling prop (52) a) is arranged on the outer side of the side part (20) to which it belongs, b) is hooked out downwards starting from the hinge joint connecting it to this side part (20), c) has a stiffening (64) across its plane of motion and d) is rigidly connected with the other swivelling prop (54) via a cross tube (50).

Abstract: An adaptable frame carrier with triaxial freedom of movement for couches and seats, in which the freedom of movement is achieved in the X-, Y- and Z-direction by a system of elements which can be moved relative to one another and are spring loaded, a connecting element making the moveability between the X-, Y- and Z-direction interdependent. The frame carrier having at least one dome-shaped rolling body (3, 8) which rolls along a pressure-resistant rolling plate (2) in the X- and Y-direction, and two cylinders (6, 7) which slide one into the other and are supported against each other in the Z-direction by a compression spring (4). One of the cylinders (7) which slide one into the other being connected in a spring-loaded and hinged manner to the frame (18) of the couch or seat via a frame connection plate (13).

Abstract: A chair that includes a frame, a seat, and a back support that has a lumbar support device to support the back bone of the user. The seat includes a soft cushion and a support panel that includes a front and rear disc part of which the latter protrudes as a free end from the first and is not in contact with the back support. The cushion has a rear seating area that is recessed relative to a forward seating area so that a transition area is formed that provides a knob against which the user's sitting bones may bear against with a view to prevent forward gliding of the user's thigh bones along the seat. The rear disc part is also lowerable from an upper starting position to enable a variation of the height level.

Abstract: A toilet seat elevating system for assisting a physically challenged individual departing a conventional toilet. The toilet seat elevating system includes a frame having a pair of side members, a pair of cross members, and securing members for engaging the lower portion of a conventional toilet. An extendible structure attached to the frame and a seat member for moving the seat member forwardly and upwardly thereby assisting an individual from a seated position. A guide funnel is secured about an opening within the seat member for guiding discharged material directly into the toilet basin. A pair of arm rests are attached to the seat member for assisting the individual during utilization of the device. The extendible structure is comprised of a pair of upper arms and lower arms attached between the frame and the seat member. An actuator is attached between the frame and a lever structure that is pivotally attached to the frame and the seat member thereby elevating the seat member.

Abstract: A vehicle utility seat in which the seat back can be rotated down onto the seat bottom to form a pass through opening into the trunk area of the vehicle. In addition, the seat bottom can be rotated upward to a stowed position immediately in front of the seat back providing increased cargo area in the rear seat area. A flat load floor is provided beneath the seat bottom for placing cargo thereon. The seat bottom and seat back are formed with complementary seating surfaces so that the seat bottom and seat back can nest together and occupy a minimal volume in the vehicle to maximize the cargo carrying capacity of the vehicle. In addition, the seat bottom and seat back are mounted to the vehicle for rotation about a common pivot axis.

Abstract: A support bracket for supporting a wheelchair seat frame relative to a wheelchair base frame includes a first end having a socket therein and a second end that is structured and configured to couple to a lateral rod which is connected to the seat frame. The socket is dimensioned and configured to receive an element which, in turn, is provided with a passage for receiving a lateral strut. The lateral strut is fixed relative to the wheelchair frame and is positionable in a substantially fixed position relative to the element in the socket in the first end of the support bracket.

Abstract: A seat platform carrier for a chair tilts backward and forward relative to a base part when a load, such as a person sitting is the chair, is placed on the seat carrier. A resetting mechanism positioned the seat platform carrier to the same initial position when the load is removed. A lamellar pack attached to a hand lever provides the user with a means to lock the seat platform carrier in a desired tilted position. A height adjusting actuator is included in the base part to permit the user to select an appropriate seat platform height. A user sitting on the seat platform carrier is able to freely tilt forward or backwards.

Abstract: A chair assembly having detachably interfitting parts. A right hand side support of the chair assembly includes slots extending from the exterior profile of the first side support towards the center of the side support. A left hand side support similar to the right hand side support is also provided. A seat pan having extensions is fitted into two complementary slots of the right and left side supports. A back support having extensions is also fitted into two complementary slots of the right and left side supports. The seat pan and the back support may be independently adjusted so as to present various sitting positions.

Abstract: A chair (1) including a seat (2) coupled to a mounting shaft (3) having an axis of rotation (7), a base (4) and a shaft coupling which allows the shaft (3) to swivel relative to the base (4) about the axis of rotation (7) and allows the shaft (3) to tilt relative to a vertical orientation of the chair (1) to various degrees in the seat (4) direction and sideward directions and prevents the shaft (3) tilting to any substantial extent in the seats (2) rearward direction. The shaft coupling includes a spring bearing allowing the rotation and tilting and includes a cam fitted on the shaft (3) which limits the degree of tilting in accordance with the shape of the cam.

Abstract: A chair includes a base, a seat operably supported on the base for depth adjustment, and a back operably supported by an upright that extends from the base for recline. The back includes a structural back support, a rear cover covering a rear side of the back support, and a front/lower concave cover covering the upright between a rear of the seat and below the back support to provide a one-piece back and seat appearance. The concave cover defines a concavity shaped to receive a rear of the seat to facilitate depth adjustment, but so that the one-piece back and seat appearance is maintained. The concave cover further includes upwardly extending tabs that engage a lower marginal edge of the back support to facilitate assembly.

Abstract: A chair with an automatic seat which cyclically inclines is configured with a forward/backward cyclically inclining mechanism (8) which supports the seat (6) supplied separate from and independent of the backrest (2) so that the seat can be inclined forward and backward and driven mechanically to incline by continuously changing its inclining angle. The inclination direction of the seat can be automatically reversed within a specified angle range. In addition, the chair is equipped with a rightward/leftward cyclically inclining mechanism (13) which is rectangularly installed beneath the forward/backward cyclically mechanism (8) to support it along with seat 6 to allow and drive inclination in the rightward and leftward directions.

Abstract: A mounting for a bicycle saddle which allows lateral rocking with respect to a seat post. The mounting features a platform spaced apart from a shoe member by a cylindrical elastomer, with the platform and shoe member maintaining mutual contact through use of a pivot member. The pivot extends downwardly from the platform and fits into a toe portion of the shoe member, while a rearward heel of the shoe member seats the elastomeric cylinder. The forward pivot member allows rocking of the platform and seat, while the rearward elastomeric cylinder provides some shock absorption, depending upon tension placed on the cylinder. The shoe has a pair of rails on the underside with the same spacing and cross-sectional shape as seat rails. This allows the shoe to be fastened to a seat post with a conventional clamp. The same type of clamp is used for securing a bicycle seat to the upper side of the platform.

Abstract: A bar stool having a seat portion, an intermediate portion and a base portion, wherein the intermediate portion has a spring construction and is mounted tiltably and returnably on the base portion. The intermediate portion comprises a central pillar and a spring arrangement which are connected to distribute the weight between the seat portion and the base portion.

Abstract: An adjustable device to support a seat on a machine or vehicle that is laterally pivotal about an axis parallel to the longitudinal axis of the machine to permit the seat to accommodate uneven terrain. At the will of the operator, this device can be adjusted to a horizontal position, thereby providing comfort and safely when operating a machine on uneven terrain. The device is to provide an improved seat mounting wherein the seat swings from a common point and movement thereof is controlled by an electromechanical linear actuator, activated by a double throw-double pole switch, (voltage determined by equipment manufacturer), located within easy access of operator. Another important object resides in providing a way to secure seat in a fixed horizontal to seat mounting in the event of malfunction or power failure. Spare clevis pins, provided with hair pin clips, could be inserted in pre-drilled holes which will secure seat and movable framework to base assembly parallel to each other.

Abstract: A front seat assembly having a seat bottom assembly and a seat back pivotally attached to the seat bottom assembly. The seat bottom assembly includes a pair of fixed rails extending fore and aft and being laterally spaced across a vehicle from one another. Brackets are attached to the fixed rails for attachment to the vehicle. A slide rail is supported by each of the fixed rails for fore and aft movement relative to the fixed rails. Front and rear cross beams interconnect the slide rails for supporting a number of components. A support sheet, having a pair of openings, extends between and is supported by the cross beams. A seat pan, having a front section and a rear section, is disposed above the support sheet for supporting an occupant. A pair of projections are pivotally connected to and extend from the seat pan for sliding engagement within the pair of openings in the support sheet.

Abstract: A seating device which comprises an inflatable seat (4) and an inflating means which provides for the controlled inflation and deflation of the seat. The seat (4) comprises a chamber defined by top, bottom and side walls (12, 13) which is connected to the inflation means. The inflation means comprises a motorised fan unit (20) and a control valve (6) connected by a supply pipe (10) to the seat (4). The device is inflatable from a deflated position on the base of a support surface such as a bath to an inflated position adjacent the rim of the bath such that a person sitting thereon can easily enter or exit the bath to bathe. The device is of particular use for handicapped or elderly persons and does not require mechanical actuation means and has sufficient inflatable characteristic to enable the seat to remain in a fixed position in relation to the bath.

Abstract: A cycle seat is mounted to a cycle frame so that the seat will rotate in a horizontally-inclined plane on an upwardly-extending axis. The seat extends transversely on opposite sides of the axis of rotation and has a lobed structure in which a gently-rounded front is disposed between two rearwardly-extending wing-like portions. Structure is also provided to adjust the vertical inclination of the axis of rotation so as to vary the attitude of the seat relative to the cycle frame. The seat and associated mount allow the rider to sit more naturally, more comfortably, for longer periods of time.

Abstract: A seat lift employs an integral linkage which causes the seating surface to rise, move forward and tilt as the unit is actuated. The seat motion emulates the natural motion of a person rising from a seated position and is directed by combined linkages of different lengths. A hinged section of the front of the seat surface doubles as an integral linkage and provides a vertical component of motion when the seat is powered. The linkage mechanism is easily adapted to seat lifts of all kinds, such as wheelchairs and public seating in addition to furniture and a portable seat lift. When pneumatically powered, the system employs an easily replaced air chamber which has standardized mounting features and is a cylinder formed of flexible, non-elastic fabric. Separate, easily controlled means are provided to inflate and deflate the air chamber.

Abstract: The invention relates to a seat area of a motor vehicle seat with a seat cushion adjustable in its incline by height adjustment of the front edge of the seat consisting of a seat support, a pillow spring system and an upholstery part, the seat support comprising a support unit and a swivelling bridge which among others defines the front edge of the seat. Between the swivelling bridge and the support unit and a swivelling bridge which among others defines the front edge of the seat. Between the swivelling bridge and the support unit an adjustment regulation device is planned for an incline adjustment of the swivelling bridge opposite the support unit. A rear support unit, with which the swivelling bridge is connected on both ends via joints is allocated to the swivelling bridge by formation of a cushion support, which can be upholstered. Between the part of the swivelling bridge which is forming the front part of the seat and the rear support unit the pillow spring system is bent.

Abstract: A seating unit having two adjacent and mutually pivotal support elements 3, 4) pivotal between an initial position and a maximum flexed position. A spring element (12) is secured between the support elements (3, 4) and biases the support elements (3, 4) into the initial position. The spring element (12) comprises a base member (13) arranged in an area between the support elements (3, 4). At least one engagement element extends from the base member (13) into cavity (14, 15) in one of the support elements (3, 4) such that the support elements (3, 4) may pivot relative to each other. The engagement element is provided with a rigid stop (17, 17') projecting from the base member (13) to define the maximum flexed position of the support elements. The engagement element is further provided with a leaf spring (18, 18'; 68) to restore the support elements (3, 4) to their initial position.

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: A self-leveling seat is provided including a vehicle having a seat with a horizontally oriented seat portion and a planar floor board. A tubular mounting frame includes a lower horizontal portion having a hollow cylindrical configuration. A pair of mounting brackets encompass the lower horizontal portion and are fixed to the floor board of the vehicle. A pair of upper vertical portions are each equipped with a hollow cylindrical configuration and have a bottom end connected to an associated end of the horizontal portion of the frame. The vertical portions extend upwardly therefrom to terminate at open top ends. The vertical portions are each in fluidic communication with the corresponding end of the horizontal portion. A pair of cylinders are each slidably situated within the top end of a corresponding one of the vertical portions of the frame and have a bottom end and a top end. The top end is coupled to a bottom surface of the seat portion of the seat.

Abstract: A tilt-up automobile seat having a tilt-up mechanism positioned under a seat cushion. The seat cushion and a seat back are continuously positioned in a flat plane at a predetermined angle and the whole seat is tilted upwards around a front side of the seat cushion as a fulcrum. The tilt-up mechanism is always covered by a combination of an upper cover for covering at least its upper part and an under cover for containing at least its lower part even in a tilt-up position of the whole seat, resulting in preventing the tilt-up mechanism from being seen from outside. The upper and lower covers can include flange parts overlapped to each other, having a predetermined height.

Abstract: Small conventional saddles squeeze the buttocks area strongly, whereas large conventional saddles have the effect that the buttocks area slips over the saddle during pedaling. When a bicycle is only used occasionally, both situations have unpleasant consequences, at least when large distances are covered. The present bicycle seat prevents pain in that it consists of two seat halves that are other and follow the cranking motion exerted by the legs of the rider in opposite directions. As a result, the position of the hip joint of the rider remains substantially unchanged. The bicycle seat permits an upright and ergonomic sitting posture.

Abstract: A pivoted seat and footrest chair having a seat and footrest at the top and bottom of a pair of vertical supports such that rotation of the seat forward rotates the footrest back as the person rises out of the chair, allowing easy exiting. The center of gravity of the seat and footrest assembly are vertically aligned with or forward of a pivot point when the seat is in the forward position, such that the seat remains in or rotates toward the forward position when unoccupied. Additionally, the seat extends in front of the armrests while the footrest remains under the seat when the seat is in the forward position, such that the seat is easy to access.

Abstract: A children's balance seat with attachment mechanisms for the seat and shin cushion enabling these to be moved and adjusted as the child grows. The particular shape and construction of the above mechanisms also facilitates free forward and backward movement and this movement can be further assisted by means of an adjustable spring.

Abstract: A dynamic posture chair is disclosed which is capable of use in a range of sit/stand positions. The chair includes a mobile base that is selectively movable by the user and the chair member that is mounted to the base with a tilt mechanism that enables the chair member to be selectively and infinitely tilted over a predetermined of tilt positions while resistively restraining the chair member in the selected tilt position. The chair member includes seat and back members that relatively subtend an angle in the range of about 120 degrees to 135 degrees. The chair member has a uniquely shaped fixed seat/back contour that instantly supports in comfort the back, buttocks and thighs of the user in its lowest and highest vertical positions, and in all positions in between.

Abstract: An adjustable armchair is provided that includes a frame, a seat portion, a back portion and a pair of armrests. The seat portion, back portion and pair of armrests are mounted to the frame. The armchair also includes a drive mechanism coupled to the frame and at least one of the seat portion and the back portion which is arranged to drive the at least one of the seat portion and the back portion to pivot on the frame, and a control mechanism coupled to the drive mechanism which is arranged to actuate the drive mechanism. The control mechanism includes at least one of the pair of armrests which is moveably mounted to the frame, and the drive mechanism is actuated when the armrest is moved on the frame.

Abstract: A seat particularly suitable for industrial applications having a hinged bottom supported upon springs for adjustably resiliently supporting the occupant to absorb vibrations and impact. The springs impose a resilient biasing force upon the seat bottom structure and a conveniently located adjusting knob selectively positions the location of the application of the biasing force with respect to the seat bottom hinge. Accordingly, by adjusting the location of application of the biasing force, the suspension characteristics of the seat bottom may be controlled and preselected with minimum manual exertion and no spring pre-tensioning or pre-compression is required to vary the suspension characteristics.

Abstract: An active dynamic seat has a base, an intermediate part linked to the base and a seating part linked to the intermediate part. The seating part has on its lower side a shell-shaped, downwardly convex seating bowl. The seating part is supported in the vertical direction on a bearing arranged on a head part of the intermediate part that engages the shell-shaped lower side of the seating bowl, and is mounted so as to tilt in all other directions.

Abstract: An active dynamic seat has a base, a stiff intermediate piece linked to the base and a seating part linked to the intermediate piece. The seating part is rigidly secured to the intermediate piece and the intermediate piece is mounted in such a way on the base that its central area can tilt in all directions and slide vertically. In addition, one or several restoring devices are arranged on the intermediate piece, in the area below the mounting point on the base, for restoring the tilting movement and at the same time the vertical displacement of the intermediate piece and the seating part.

Abstract: A tilt adjusting arrangement in connection with the seat of an exercise apparatus or the like, comprising a mounting bracket which is fixedly positioned at the upper end of a support tube and a seat portion which is pivotally positioned on the mounting bracket in such a way that the seat portion may pivot about a horizontal axis with respect to the support tube. Manually operable adjusting and locking components, functioning on a screw principle, adjust and lock the seat portion at a desired tilt angle with respect to the support tube without use of tools. To provide a simple indication of tilt angle for ease of adjustment and readjustment, a pointer on the seat portion and a scale part on the support tube provide a direct indication of the seat tilt angle.

Abstract: A seat with a user protecting device, includes a leg member, a backrest member attached to the leg member so as to extend upward therefrom, a seat member attached to the leg member so as to be between a seating position in which the seat member is arranged substantially horizontally and an inclined position in which at least a rear end portion of the seat member located on a back rest side of the leg member is arranged below the seating position or a front end portion of the seat member located opposite to the rear end portion thereof is arranged above the seating position, and a seat member rotation mechanism for holding the seat member in the seating position and allowing the seat member to rotate selectively from the seating position to the inclined position.

Abstract: The present design is of a variable posture component system seating device, also called a work chair, which integrates user selectable and adjustable components. The components consist generally of a short base, a long base, height adjustment mechanisms, a seat adjustment mechanism, a seat assembly, right and left arm rest assemblies, an abdominal rest assembly, a back rest assembly, a head rest assembly, a knee/leg rest assembly, a keyboard desk assembly, an auxiliary desk assembly, a horizontal work surface assembly, and a variety of interconnecting hardware. Numerous improvements to a variable posture work chair are incorporated into the design, which can benefit workers subjected to extended periods of immobilization as well as the infirm and the injured. Fore and aft support from a single seated position is provided over the entire range of leaning normally associated with human sitting.

Abstract: A vehicle seat comprises a seat plate, a backrest pivotably movably connected to the seat plate, and an L-shaped base formed by a horizontal portion on which the seat plate is disposed and a vertical portion on which the backrest is mounted. The seat plate is provided at the underside of its front edge with retaining members which are spaced from each other in the longitudinal direct ion of the seat. The horizontal portion carries a stationary mounting support having a further retaining member for selective latching engagement with a retaining member on the seat plate, to secure the seat plate in an adjusted position on the horizontal portion of the base. Projecting from the underside of the seat plate are spring elements which are spaced from each other in the transverse direction of the seat and which slidably movably bear on the horizontal portion of the base by way of sliding shoes.

Abstract: A mechanized traction chair is disclosed that employs a motor operated underarm support device that in combination with a restrictive seat belt provides forced traction to the upper torso. A lower seating assembly provides a variable articulating motion to the lower torso.

Abstract: The seat hinge is formed of a base plate hinged to a seat plate which is hinged to a support member. The bottom of the base plate is adapted to be connected to a base member and the top of the seat plate is adapted to be connected to a seat. The seat plate can be pivoted close to the base plate with the support member located therebetween to locate the seat in a down position and to an inclined position, supported by the support member, to locate the seat in an inclined position.

Abstract: An elevating member to be disposed upon the seat of a chair to elevate to a raised position the body of a person thereon, the elevating member comprising a pair of overlying plate members being hinged at one side thereof and having a seat supporting surface thereon, the same being hinged as at the front of a seat, said members lying over two sides of an expandable member, means retaining the side walls of said expandable member forming an airtight chamber, a low pressure air supply being connected with said chamber inflating the same and angling the upper of said plate members upwardly and forwardly elevating a person seated thereon to an erect position, this device being particularly adapted for use by persons having difficulty rising to a standing position.

Abstract: A mechanism for mounting the seat of a swivel chair to the chair frame, with a first mounting which can be connected to the frame, with a second mounting carried by the first mounting via a joint, which can be connected to the seat and with a spring arrangement for the initial tensioning of the second mounting in an upper position of rest, locking parts on said first and second mounting which are adapted to be engaged and disengaged by a locking slide.

Abstract: An adjustable chair includes a base, a seat, a back and a chair control for pivotally connecting the back to the base for movement between an upright position and an inclined position. The seat is pivoted to the base at a front end. The seat is also connected to the base by a plurality of locking plates. A spring clamp normally holds the plates in a locked position. The clamp permits pivotal adjustment of the seat with respect to the base. A cable actuated back stop or lock includes a lever pivoted to the back. When in the operative position, the lever contacts the locking plates connected to the seat to limit or prevent tilting of the back with respect to the seat.

Abstract: A portable seating assist device for use on a wide range of seating furniture comprises a base portion to be placed on the horizontal surface of a chair or the like and a seating surface which is hingedly mounted to the base. A compression spring is mounted between the seating surface and base to urge the two apart an allow upwardly assisted motion between a closed and open position. The seating surface is hinged in two sections so that the rear section forms a stable platform in the raised position. Levers at the front corners of the seating surface assist in initiating the lifting action.

Abstract: A lift seat includes a seating surface, for example, a toilet seat, mounted on a supporting frame by a four-bar linkage. The four-bar linkage includes a lower link fixed to the frame and an upper link fixed to the seat. An armrest is attached to a front link of the four-bar linkage for pivoting therewith against the bias of the spring which loads the four-bar linkage as the seat is lowered from a raised position to a seating position. Energy stored in the spring is then available to lift the person from the seating position back to the raised position. A damper is connected to the four-bar linkage to prevent abrupt movement of the seat as the four-bar mechanism collapses and expands, while a gas spring is provided to initially resist movement of the four-bar linkage from either the expanded or the collapsed condition unless the armrest is initially rotated.

Abstract: An improvement to a seat having relatively adjustable sections to improve the rocking means of each separate seat section to move back and forth in a longitudinal rocking, move downwardly and sliding backwardly, to thereby more effectively and efficiently assist in the comfort of the individual. The improvement includes a seat rocking member such as an arch shaped suspension affixed to the lower portion of each seat half and affixed at only one side to the upper surface of the base. The resilience of the arch shaped suspensions permits and limits the seat to move downwardly and slide backwardly, when a force such as the weight of a person pushes downwardly on the seat. The resilience of the arch shaped suspensions further permits and limits the seat to rock back and forth to thereby enable the user to independently rock back and forth in a front to back rocking arrangement on each seat half.

Abstract: A person transporter in the form of a chair having an open frame and a removable seat at a height above the knees of the average person so that it is easier to get into and out of, the seat being tiltable from a horizontal position either forward or back. A footrest in the lower part of the frame is movable from wholly housed in the frame to an exposed position for use, a vertical lever at the side of the frame for so moving the footrest, the lever being easily accessible to the attendant.

Abstract: A cab side wall mounted seat support has a slide assembly, typically a bar and sleeve assembly, attached to the wall and coupled by an upper arm support to a seat socket. A lower arm has a peg which engages one of a series of holes in the wall for locking the seat in place. The slide assembly includes a rotation function allowing the socket to be raised to release the peg from the hole for seat adjustment. Alternatively, the upper arm support is hinged to permit such release. One embodiment uses a roller on the lower arm instead of the peg and a spring loaded locking pin in the slide assembly releasably holds the seat in place.

Abstract: A seat adjuster is disclosed, which comprises a seat pan; parallel first and second base members; spaced first and second rod members, each being rotatably supported by the base members; first and second link mechanisms respecitvely connected to the first rod member and mounting thereon a front part of the seat pan, the first and second link mechanisms raising the front part of the seat pan when the first rod member is rotated about its axis in a given direction; third and fourth link mechanism respectively connected to the second rod member and mounting thereon a rear part of the seat pan, the third and fourth link mechanism raising the rear part of the seat pan when the second rod member is rotated about its axis in a given direction; and first and second drive mechanisms mounted to the first base plate for turning the first and second rod members respectively.

Abstract: A height adjusting device for a seat comprises a seat-cushion, an operating mechanism for moving simultaneously a frontward portion and a rearward portion of a seat-cushion in the vertical direction, and a reclining mechanism for adjusting of the reclining angle of the seat-cushion by moving the frontward portion thereof in the vertical direction wherein the operating mechanism is operated without affecting the adjusted reclining angle of the seat-cushion established by the reclining mechanism.

Abstract: The squab of the seat is supported at its front and rear regions and by responsive support arms. The lower ends of the arms are mounted on the free ends of respective pivoted elements whose positions are adjustable selectively so as to enable the seat to be adjusted more precisely to the anthropometric characteristics of its occupant, the whole considerably reducing the vertical bulk of the squab and of the seat as a whole.

Abstract: An apparatus that is placed on a soft seat, such as an easy chair or sofa to help its user in being seated and in arising includes a rigid U-shaped lower frame that is spanned by a sheet of pliable material that is in contact with the seat, and further includes an upper U-shaped frame formed of tubing that is spanned by a rigid panel. The upper frame is resiliently and pivotably mounted to the lower frame by means of left and right torson springs, which apply an upward force to the rigid panel, partially offsetting the user's weight when the user is seated on the rigid panel. The apparatus is provided with left and right hand holds that permit the user to steady himself as he sits down or arises. The apparatus is stable in use and easily portable owing to its lightweight construction.