Abstract: A simple system for mechanically lifting and securing a copier/printer to vibration isolators aboard a Naval vessel. The system is compact, occupying space only under the copier/printer and not protruding from the sides and allows the copier/printer to completely detach for servicing. The system includes a four bar linkage using two square supporting members as the chassie with the four bar linkage being mounted to vibration isolators that are welded to the deck of the vessel. The four bar linkage is manipulated by two screws to easily and quickly raise the copier/printer off its casters and restrain it in a fixed position. The two screws make detachment from the four bar linkage a simple and time efficient process for repairpersons.

Abstract: A system for adjusting the height of automobile vehicle seats having an arm of the mechanism which is hinged on a support around a hinge shaft. It is formed of two elements connected by a pivot and at least a connecting member with a predetermined rupture load. One of the elements includes a main set of teeth in the form of an arc of a circle centred on the hinge shaft and the other element includes a secondary set of teeth with same centre. A pinion located between the two sets of teeth meshes only with the main set of teeth when the two elements of the arm are securely attached. In case of an excessive load on the arm, the connection is broken and the secondary set of teeth meshes with the pinion subsequent to the relative pivoting of the two elements and prevents the rotation of the pinion.

Abstract: A vehicle seat assembly having a seat mounted on a knee action suspension mechanism and hand controls for the operation of the vehicle that are mounted on the same suspension mechanism as a seat. More particularly, a seat assembly for a vehicle including a seat having a forward portion and a rearward portion. The seat assembly includes a knee action suspension mechanism mounted under the seat and resiliently supporting the seat for resilient movement such that the rearward portion of the seat is vertically movable and the forward portion of the seat is generally pivotable about a longitudinal axis adjacent the forward portion of the seat. The seat assembly has an armrest assembly supported for movement with the seat, the armrest assembly has a forward end and a hand control is connected to the forward end of the armrest assembly.

Abstract: A power seat adjuster includes a torsion member extending between the movable tracks of a pair of track assemblies. An elevating drive mechanism is coupled to the torsion member for rotating the torsion member. Motion links are fixedly mounted on the torsion member spaced from opposite ends of the torsion member and engage one end of a vehicle seat support for elevating and lowering the one end of the seat upon rotation of the torsion member. A one piece bushing/spacer is fixedly mounted in each movable track and rotatably receives and supports one end of the torsion member.

Abstract: A seat height adjusting device. A rail member is fixed to a floor. A lift link is rotatably connected to the rail member. A lower lift arm is connected to a seat cushion, the lift link, and the rail member through a link member. An upper arm is connected to a seat back and rotatably engaged with the lower lift arm. A lower arm is connected to the lower lift arm so as to sandwich the lift link and the upper arm with the lower lift arm. The lower arm is engageable with the lift link and the upper arm.

Abstract: A weight-balancing stand arrangement supports a sheet of material or the like and includes a bottom stand-part and a top stand-part. The top stand-part includes a horizontal beam provided with a horizontal guide surface. The guide surface coacts with widely spaced apart end portions of two guide rods, the opposite end-parts of which are placed closer together and are pivotally mounted on the bottom stand-part and coact with one or more devices which function to forcibly create a clear related rotational pattern for the two guide rods. The arrangement also includes spring devices which act between the bottom stand-part and at least one of the guide rods.

Abstract: A vehicular seat adjuster has a pair of rail units for adjustably sliding a vehicular seat in the fore-and-aft direction and a lifting mechanism for adjustably moving up and down the seat. The lifting mechanism is installed to the rail unit and includes a front lifting section disposed under a front portion of the seat for vertically moving a front portion of a seat according to an operation of a front motor unit and a rear lifting unit disposed under a rear portion of the seat for vertically moving a rear portion of the seat according to an operation of a rear motor unit. The front and rear motor units are swingably supported to a shaft member, which is rotatably supported to the pair of seat rails.

Abstract: The disclosed invention is a means of providing an individual with increased ambulatory function through the use of a wheeled chair. The chair includes a lift mechanism, which is comprised of a linkage and an actuation means that can be operated by the user without assistance from another individual. The combination enables a user of compromised physical capabilities, to locomote from one place to another and perform daily tasks that would require bending or reaching. The chair is lightweight and very mobile, thereby minimizing restrictions to the user. The lift mechanism linkage and actuation means minimizes torque on the motor of the actuation means, eliminating current draw spikes which would stall the motor when the battery is low. The lightweight and low friction linkage design maximizes the function of the invention by keeping the battery and actuation means small, thereby reducing the weight and increasing the mobility of the chair.

Abstract: A vertical drive nut apparatus includes an elongated strap having an aperture formed in a central portion, and a pair of folded legs extending from the central portion and terminating in parallel first and second ends having coaxial apertures. A plastic drive nut is insert molded about the central portion of the strap with a threaded through bore in the drive nut coaxially aligned with the aperture in the central portion to threadingly receive a vertical drive lead screw. The first and second ends of the strap are pivotally connected to a bracket carried on a rotatable torsion tube extending between a pair of power seat adjuster track assemblies to effect rotation of the torsion tube and a resulting elevational change in one end of a seat upon translation of the drive nut and the strap by rotation of the vertical drive lead screw.

Abstract: A seat for use in an aircraft providing improved user lumbar load characteristics during a crash event, the seat having a pair of spaced apart front and rear legs, the front and rear legs each being formed of a metallic curved beam having high plastic and low elastic deformation characteristics. First and second chair beams are connected between the front and rear legs. A seat pan is supported between the chair beams, the seat pan being configured to plastically and telescopically deform downwardly between the front and rear legs during a crash event. An energy absorbing seat cushion is positioned on the seat pan. Drag links limit the forward displacement of the front legs upper ends and thereby the seat pan during a crash event. The plasticity of the chair legs, the seat pan and the seat cushion being selected such that in the event of a crash a substantial portion of the load that would otherwise be imparted to a passenger's lower back is absorbed.

Abstract: A vehicle seat constructed in accordance with principles of this invention comprises stopping means that serve to conduct forces introduced via a movable belt mounting point during a frontal impact directly to the side rail, without having to transmit the entire load via the adjusting mechanism. A vehicle seat includes a seat frame having a seat belt mounting point, and an upper rail that is connected to the seat frame by at least one adjusting lever and at least one compensating lever extending from the upper rail to the seat frame. The seat includes a height adjusting mechanism for adjusting the height of the seat frame. The height adjusting mechanism includes a drive shaft connected to an end of the adjusting lever, wherein rotation of the shaft effects vertical movement of the adjusting lever and height adjustment of the seat frame.

Abstract: A seat lifter comprises a lifter shaft having a sector gear and rotated by a center gear to vertically move a seat frame with respect to a base frame through a link mechanism. The sector gear is formed with a stopper arm protruding from one side thereof, whereas the base frame is formed with a long arc-shaped hole with which a pointed end of the stopper arm is engaged. The long arc-shaped hole is partly covered by a vertical wall of the second frame.

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: A basketball-stand, comprising a base which carries at least one support system which in turn carries a beam provided with means for attachment of a back-board and dunk ring. The beam comprises two parts--a first part carried by the support system and a second part which carries the means for attachment of a back-board and dunk ring--said first and second parts being movable one with respect to the other such that the effective beam length is adjustable.Preferably the second beam part is slidable with respect to the first beam part.

Abstract: A vehicle seat suspension includes a bottom frame adapted to be mounted on the vehicle and a top frame located above the bottom frame and adapted to support a seat thereon. A substantially fully collapsible scissors linkage is interconnected between the bottom frame and the top frame enabling the bottom frame and the top frame to move relative to each other substantially in parallelism. A biasing arrangement is disposed between the top frame and the bottom frame and has a preload force urging the top frame away from the bottom frame. A first adjustment mechanism is located in the top frame and selectively enables fore and aft adjustment of the top frame relative to the bottom frame.

Abstract: An assembly for supporting a computer and related equipment at a selected height including at least one vertically oriented fixed stanchion. At least one support tray is slidably situated on the fixed stanchion along a vertical axis for supporting a monitor. Finally, an elevation control assembly is included for allowing a user to adjust the height of the monitor and CPU support tray and further maintain the height thereof.

Abstract: A power seat adjuster includes a drive link fixed to a torsion tube rotatably supported between the upper tracks of a pair of track assemblies. One end of the drive link is pivotally connected to a first leg depending from an upper seat support frame member. First and second flanges respectively formed on the first end of the drive link and the first leg lie in an intersecting path for engagement upon rotation of the first end of the drive link beyond a normal end travel position to resist continued rotation of the first end of the drive link and the upper seat support frame. Similar cooperating flanges are formed on a slave drive link and on the lost motion strut of a rear elevating mechanism.

Abstract: Output reduced by a reduction mechanism A contained within a tube type motor body 5 is transmitted to a threaded shaft 13, and a nut 15 having a wing element 15a for transforming rotation of the threaded shaft 13 to propulsion is threadingly engaged with the threaded shaft 13. Then, reduction and boost is made between a linear groove 16a of a guide member 16 secured to an inner wall of the body 5 and the rotation is transmitted to the body 5 by this rotational force, thereby an arm 17 provided on the body 5 is swung so that a base 3 is adjusted upwardly and downwardly about bearing members 2, 2a mounted on slide rails 1, 1. Owing to this arrangement, since a smaller installation space can be achieved, the apparatus can be made small in size and commonly used for various types of automotive vehicles. Moreover, the apparatus can be unitized. In addition, a high torque transmission is made possible by reduction and boost.

Abstract: A structure of powered seat including a main bracket provided at a forward point of seat fore-and-aft adjustment device, and in that main bracket, a motor of the seat fore-and aft adjustment device is secured. Further, the structure has a sub bracket in which drive mechanisms of forward and backward seat height adjustment devices are secured, to thereby provide one unit of seat height adjustment device. The sub bracket is detachably secured to the main bracket, whereby such unit of seat height adjustment device may be connected to the seat fore-and-aft adjustment device, permitting thus use in a driver's seat, or may be removed from the same seat fore-and-aft adjustment device, permitting use in a assistant or navigator's seat which does not require height adjustment.

Abstract: A step exercise bench includes a platform and has ratcheting support members providing for adjustment of the height of the platform. The platform has opposite ends with a pawl mounted proximate thereto. A pair of pivotally connected support members are disposed below the platform between the ends. Each support member has ratchet steps formed thereon. The pawls selectively engage ratchet steps. The support members have floor members extending below the ratchet means, for resting on a support surface such as a floor. Springs urge the pawls into selected steps formed in the support members.

Abstract: A seat for a vehicle with a scissor-like pivoting system and device for the adjustment of the inclination and/or height of the surface of the seat includes the feature that the device for the adjustment of the inclination and/or height must be space-saving and is not permitted to influence the pivoting system. Scissor-type sets of arms are proposed for the pivoting system whose upper arm-components are angularly adjustable and capable of being fixed relative to the remaining lower components of the same arm.

Abstract: A seat bracket and riser for a seat system includes interlocking portion which create a direct path for the resolution of any forces thereupon to the frame whiler reducing loads passing to the operating portions of the seat system.In a preferred embodiment the seat adjuster including a system of linkages utilizing the effect of a compensating member or the like which compensates for the arcuate motion of the system if left uncompensated. The invention finds particular application for compact assemblies.

Abstract: A joint mechanism having a movement between relative members about a center of rotation located at a point where a first line extends from one of the members intersects a second line extending from the opposite member is disclosed. Multiple joint mechanisms may be aligned together along with common lines being the axis of rotation of each joint mechanism to provide a concentric spherical joint mechanism. Concentric spherical joint mechanism may be used to assemble truss frame structures.

Abstract: A seat cushion adjustment for vehicle seats, more particularly the seats of motor vehicles, depends on the adjustment path of at least one main adjustment of the seat and serves for adapting the development curve of the seat cushion adjustment individually and ergonomically. The seat cushion adjustment includes a first adjustment for a main adjustment of the vehicle seat within a defined adjustment area, and a second adjustment coupled to the first adjustment for adjusting the seat cushion in dependence on a main adjustment of the vehicle seat. The seat cushion adjustment also includes a separate adjustment coupled to the first or second adjustment for fixing the development curve of the seat cushion adjustment within a restricted adjustment area, whereby the extreme positions of the seat cushion are associated with the extreme positions of at least one main adjustment of the vehicle seat.

Abstract: A vehicular low profile, self propelled aerial work platform having an articulated parallelogram boom assembly including a lower boom assembly having pairs of compression and tension arms pivotally connected between a support frame on the vehicle and a floating frame, and an upper boom assembly having pairs of compression and tension arms pivotally connected between the floating frame and a riser connected to the proximate end of a telescopic boom assembly having a work platform connected to the distal end thereof. The ends of the tension arms in the upper and lower boom assemblies which are pivotally connected to the floating frame, share the same pivot connection so that when the articulated parallelogram is in the folded position the tension arms are inter-digitated and lie in the same common plane so that the vehicle can be maneuvered through a low doorway, in the order of six feet, seven inches.

Abstract: A vehicle seat suspension system is provided which includes, in a seat support comprising an upper housing and a lower housing and a scissors linkage support apparatus, a spring fixed to the upper housing and a cable attached to the spring and wrapping around a pulley attached to the upper housing and downwardly to an arcuate pulley attached at the scissors linkage midway pivot and an actuator knob which allows a seat occupant to tighten or loosen the cable and raise or lower the seat to provide a vehicle seat suspension system.

Abstract: A lifter mounting structure for mounting a seat lifter on a seat slide rail unit consists of a lower stationary guide rail rigidly mounted on an automotive floor panel and an upper slidable guide rail having a sliding-contact section slidably fitted to the lower stationary guide rail, comprises a mounting bracket tightly fitted to the upper slidable guide rail and having a pair of opposing side wall section. A laterally extending shaft member is provided beneath a bottom of the seat and rotatably linked to the upper slidable guide rail through the mounting bracket. A seat support link is disposed between the laterally extending shaft member and the bottom of the seat for moving the seat upwardly and downwardly and has a substantially C-shaped member formed with a pair of opposing side wall sections. The lifter mounting structure includes a positioning structure for positioning the seat support link to the mounting bracket.

Abstract: In order that the acceleration suffered by the occupant (O) of an aircraft, particularly a rotary-wing aircraft seat in the case of an accident remains below a humanly withstandable limit, no matter what the size of said occupant, a seat is proposed in which a height regulation of the pan or bucket (16), in which the occupant is received, also has the effect of modifying the inclination of the energy absorbers (38). Thus, the vertical component of the retaining force exerted on the pan (16) by said absorbers decreases with the size of the occupant, which leads to the desired result.

Abstract: A seating level adjusting device includes an elevating mechanism attached on a frame of the vehicle seat for raising or lowering the seating level, and a handle assembly separatably connected with the elevating mechanism for manipulating the elevating mechanism. The handle assembly carries an actuating mechanism for actuating the elevating mechanism, a locking mechanism for locking the actuating mechanism, and a releasing mechanism for releasing the lock state of the actuating mechanism. When repairing one of the actuating, locking, and releasing mechanisms, the handle assembly is separated from the elevating mechanism. The repair can be easily accomplished.

Abstract: A base assembly for a suspension system of a vehicle seat utilizes lower and upper support frame and two pairs of elongated arms which are pivotally connected between the upper and lower support frames to accommodate forward and rearward movement (as well as upward and downward movement) of the upper support frame relative to the lower support frame. The arms act as parallel linkages during the movement of the upper support frame relative to the lower support frame and include broad abutment surfaces which engage one another when the upper support frame is moved forwardly relative to the lower support frame by a prescribed amount to thereby limit the forward movement of the upper support frame relative to the lower support frame. The abutment surfaces are relatively long in length in relation to the overall length of the arms and are bounded by tabs which interlock the arms together at the forward limit of travel of the upper support frame.

Abstract: A sprung vehicle seat comprises a scissor support assembly formed by scissor members pivotable about a common pivot axis, and a gas spring for adjustment of the support assembly. A first valve device can be connected to the gas spring for adjustment of the height of the seat and a second valve device can be connected to the gas spring by way of a coupling for adjusting the height of the seat in dependence on weight. The coupling comprises a segment member which is pivotable about the support assembly pivot axis and which has an arcuate toothed portion, and a pivot arm with a tooth arrangement which can be brought into meshing engagement with the toothed portion. The pivot arm is connected to one of the scissor members of the support assembly and is actuable by a drive means connected to the first valve device. Also arranged pivotably at the support assembly pivot axis is a rocker member operable to actuate the second valve device and movable limitedly relative to the segment member.

Abstract: In a motor vehicle seat with vertical and longitudinal adjustment, a holder (9) is guided by guide rods (7; 8) which can pivot in parallel and are pivotally connected to pivot points (5; 6) which are rigidly fixed to the car body. The holder (9) supports two short guide rods (21; 23), the other ends of which are, in each case, pivotally connected to two further long guide rods (13; 19). The upper ends (12; 25) of the long guide rods (13; 19) are, in turn, pivotally connected to the seat frame (3) and the bottom ends (15; 18) are directed in an upward direction. The short guide rods (21; 23) are pivotally connected between the ends of the long guide rods (13; 19).

Abstract: A seat adjuster for a vehicular seat is provided with a seat lifting mechanism which includes a front lifting unit, a rear lifting unit and a lifting drive unit. The three units of the seat lifting mechanism are independently connected to a seat rail of a seat slide mechanism. The front and rear lifting units are connected to front and rear portions of the seat, respectively, and move them downward and upward. The lifting drive unit is disposed between the front and rear lifting units. Various parts of the front side of the seat lifting mechanism are formed exactly the same as those of the rear side. Therefore, this seat adjuster realizes reduction in weight and manufacturing cost.

Abstract: This is a device for supporting an animal clamp (100) fixing a small laboratory animal in a specified position with respect to a testing apparatus (300). A base board (2) is fixed to the testing apparatus (300). An elevating board (4) is raised or lowered by jacks (31, 32) installed between it and base board (2), and a clamp mounting board (8) is tilted by jack (61) and sliding member (62) installed between it and elevating board (4).As a result, the height position and inclination angle of the animal clamp (100) mounted on the clamp mounting board (8) are determined, and they may be finely adjusted by properly manipulating the jacks (31, 32, 61). The animal clamp (100) does not slip off the clamp mounting board (8) because of the clamp slip preventive flange piece (7).

Abstract: A support apparatus for a coil material supply device includes first and second arms pivotally mounted at their proximal end portions on a frame by respective pins, a third arm which has distal end portions of the first and second arms pivotally supported thereon by respective pins, and also has the coil material supply device mounted on an upper end thereof, first and second length adjustment devices for adjusting the lengths of the first and second arms, respectively, and a rotating device for pivotally moving the first arm to adjust the angle of pivotal movement of the first arm. With this construction, the position of the coil material supply device with respect to an intermittent feed device of a mechanical press can be freely adjusted to set the optimum feed condition.

Abstract: A seat for vehicles, especially commercial vehicles, of which the cushion support is mounted on a swinging frame with two identically configured pairs of levers which intersect and pivot with each other, has on each side of the swinging frame at least one fastening point for a seat belt system. Pivot connections combined with a guide for each one running longitudinally along the seat connect the rear terminal segments of the rocking levers with the lower part and the upper part of the swinging frame. The rocking levers extending from the upper part of the swinging frame obliquely forward and downward are embodied with a diminished carrying capacity as compared with the other rocking levers.

Abstract: A device for adjusting vehicle seats, in particular, motor vehicle seats having, link mechanisms which, for the adjustable securement of the seat to the vehicle floor on a cushion-receiving frame of the seat, act near to the front and rear end of the seat frame upon its longitudinal sides. A locking unit engages into at least one link mechanism for locking the seat in a desired seat position. For the purpose of adjusting the seat in the longitudinal direction in a straight line or with superimposed adjustment for height and inclination, and for extreme displacement of the seat for the purpose of facilitating passage to the rear seating positions in the case of two-door vehicles, each of the two front and rear link mechanisms exhibits a link pivotably mounted on the seat frame and two mutually intersecting cross-links. The cross-links are attached by their one end to the link at a distance from its bearing point and are pivotably secured by their other end, at a distance apart, on the vehicle floor side.

Abstract: A seat suspension system for supporting a seat support member on a base member includes support arms which cooperate with a spring suspension so as to suspend loads imposed on the seat. The support arms are connected to one of the seat support member and base member by a support mechanism. A cam element acts upon at least one of the seat support member and the base member and presents a cam surface offering a resistance to the motion of the accompanying cam follower which varies depending upon the height of the seat support member. The system preferably includes a height adjust mechanism for adjusting the unloaded distance between the seat support member and the base member. The height adjust mechanism may be either a ratchet mechanism which is operated by lifting the seat support member, or a spring assisted mechanism which is operable independently of the main suspension springs and which automatically biases an unloaded seat support member upwardly.

Abstract: The value of the absolute seat height may be formed from the sum of a first, stationary basic component and a second, quasi-stationary regulation component. The value of the regulation component may be adjusted, independent of the weight of a person resting on the seat, in such a way that it takes on the value of a reference value that corresponds to the height of a person resting on the seat, at least on the average over time. Preferably, a regulation mechanism activates the height adjustment device in steps, in the form of activation steps. Preferably, the activation periods are furthermore increased or decreased by a time component, if the previous activation step caused an overly small or overly large lift.

Abstract: A power seat frame assembly includes a screw nut and rod assembly which is pre-assembled as a unit before being mounted on a bracket fixed to a rail for vehicle's seat. A gear box of the screw rod and nut assembly is disposed merely in a space between opposed walls on the bracket and the screw rod is received in an opening upper recess of the bracket. Thus, the arrangement of the screw rod and nut assembly on the bracket becomes easier.

Abstract: A vehicle seat-mounting structure, of which a cut-out portion is formed at an inner side of a seat frame in the transverse direction of a vehicle and extends from an edge portion of the seat frame behind a vehicle seat. In order that opposite edge portions of the cut-out portion in the transverse direction of the vehicle is fixed indirectly to an adjusting rail, a shaft is rotatably supported to a reclining lower arm so as to secure linking members to both ends of the shaft. Bracket members are rotatably supported to the linking members. The seat frame is secured to the bracket members, and the seat frame is then secured to the adjusting rails.

Abstract: The present invention is an adjustable step stool. The step stool comprises a telescopic body which vertically expands and contracts through the actuation of a scissor assembly disposed therein. The scissor assembly includes a plurality of knee brackets pivotally joining a pair of cross bars and screw blocks. A threaded actuating rod is journaled through one screw block and is threaded through the other screw block. As the rod is rotated, the screw blocks either converge or diverge from one another acting on the knee brackets which, in turn, cause the cross bars to raise or lower, respectively. The rod is driven by an electric motor. The motor is made operable to raise and lower the step stool through the control of a pair of switches. For hands-free, relatively effortless control of the step stool, the switches are disposed beneath yet accessible through an anti-slip mat positioned on the upper surface of the top section.

Abstract: A support structure for a seat squab includes a scissor support assembly on a base element. The support assembly has two support assembly elements which are not positively connected together but simply bear against each other. One element has one end connected to a suspension spring and its other end pivotably mounted to the base element. The second support assembly element comprises first and second limb portions which are connected together by means of a connecting portion which bears loosely on the first support assembly element. The ends of the strip portions are pivotably mounted to the base element and the squab portion respectively.

Abstract: A sprung seat having an L-shaped base arrangement includes a spring means for adjusting the springing characteristic of the seat as desired. For that purpose the seat has a two-armed pivot lever mounted pivotably about a central horizontal mounting axis on a back portion of the L-shape, in an at least approximately horizontal position. One arm of the pivot lever is connected to one end of at least one at least approximately horizontal tension spring of the spring means. The second end part of the tension spring is fixed to a fixing portion of a support lever. The fixing portion is at least approximately aligned with the mounting axis about which the armed pivot lever is pivotable. The support lever is pivotably mounted to the back portion of the L-shape and is connected by its fixing portion to a member of the scissor support assembly.

Abstract: A vehicle seat suspension unit has a base frame mountable in a vehicle and seat support frame on which is mounted a vehicle seat. A scissor-arm assembly, with primary links and secondary links, interconnect the frames overlapping cam tracks, with cam profiles engaged by rollers attached to main springs anchored on the base frame. As the frames move towards each other, the main springs are extended as the rollers move along the cam tracks to apply a restoring force to the frames. A preload assembly has rocker arms, pivotally mounted on the cam tracks, with rollers bearing on the seat support frame and provided with preload springs. By adjustment of the cam tracks relative to the base frame, the preload and the main spring rate can be varied to suit the operator's weight.

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: A device is disclosed that overrides the manual controls for filling and emptying an air suspension spring, so that the spring is not over-filled or under-filled. The device also includes a mechanism for limiting the rise of the seat suspension when the driver exits the seat. The invention has a latch bar that slides through two pieces of lubricating plastic. A ramped section of the latch bar contacts one of two switches that prevents the adjustment of a seat suspension below a minimum safe ride position or prevents adjustment above a maximum safe position. The latch bar also includes notches that are engageable with a latch pawl that is operated by a solenoid. When an operator leaves the seat, the solenoid is energized and drives the latch pawl into a notch in the latch bar. An electronic switch also enables the deenergizing of the solenoid, yet the latch pawl locks the latch bar so that the air spring does not cause a substantial rise in the seat suspension.

Abstract: A sprung seat suspension comprising a base frame; a seat carrier frame including height sensor assembly; linkage mounted on the base frame and operative to adjustably, vertically support the seat carrier frame with respect to the base frame and including an actuator which strokes the sensor assembly along a path during vertical movement of the seat carrier frame. A mover is mounted on the base frame and for adjustably vertically displacing the seat carrier frame from the base frame. An extension is connected to the height sensor assembly and the mover for selectively extending the mover. A retractor is connected to the height sensor assembly and the mover for selectively retracting the mover. The sensor assembly comprises a plurality of sensors positioned along the stroke path of the actuator which may be selectively independently activated to selectively activate the extension and retraction as the actuator strokes the sensor assembly.

Abstract: In a vehicle seat provided with a seat cushion height adjusting device, at least one seat lift handle (10A or 10B) and a seat lifting device (20) are assembled into a unit and removably mounted between a pair of seat base plates (40A and 40B), so that the additional seat cushion height adjusting device can be readily mounted under ordinary vehicle seats provided with no such adjusting device, thus standardizing the seat base plates to reduce the stock cost thereof.