Abstract: A vehicle seat having a lower part and an upper part displaceable relative to the lower part in a longitudinal direction, and a spring element for cushioning longitudinal horizontal movements of the upper part relative to the lower part. A scissors frame connects the lower part and the upper part so that they can move relative to one another. The spring element comprises a first holding arm connected to the upper part, and a second holding arm connected to the scissors frame. The first holding arm and the second holding arm are connected to one another by a first connecting element such that the first holding arm is displaced towards the second holding arm during a displacement of the upper part relative to the lower part. A resiliently deformable spring element part is deformed during a displacement of the first holding arm relative to the second holding arm.

Abstract: A vehicle includes a cabin interior, a floor, and a deployable seat assembly. The deployable seat assembly includes a pair of deployable seat support assemblies, each having first and second pivot bars pivotally supported on the floor, a first rail coupled to the first and second pivot bars, wherein the first rail is raised and lowered as the first and second pivot bars rotate between first and second bar positions, and a second rail slidingly extendable from the first rail. The seat assembly has a seat supported by the second rail, wherein the seat faces rearward and extends rearward on the second rail as the second rail slides away from the first rail.

Abstract: A vehicle seat including a seat member, having a seat face and two lateral members. The seat face may be provided between the lateral members in an integral manner. The vehicle seat may further include a height adjuster for adjusting a height of the seat face, and the height adjuster may be integrated in the lateral members. Each of the lateral members may have a recess, the shape of which may change during the height adjustment. The height adjuster may include a drive element. The drive element may include a rotor with helical slots. The lateral members may have projections provided which cooperate in a positive-locking manner with the helical slots. During rotation of the rotor, the projections may be moved away from each other or toward each other. Height adjustment of the seat face may be carried out.

Abstract: A system includes a shear member and an energy absorber. The shear member is configured to couple a seat portion to a base structure of a vehicle. The shear member is configured to sustain a first load without fracture and configured to inelastically deform under a second load. The second load is greater than the first load. The energy absorber is coupled to the seat portion and coupled to the base structure. The energy absorber is configured to absorb the energy following deformation of the shear member.

Abstract: A collapsible stand includes a base frame, a first supporting frame pivotally connected to the base frame, a first supporting unit pivotally connected between the base frame and the first supporting frame, a second supporting frame pivotally connected to the first supporting frame, a second supporting unit pivotally connected between the base frame and the second supporting frame. When operating the base frame, the second supporting frame is able to be extended away from the first supporting frame, and it is easily operating the collapsible stand from a collapsed position to an extended position; or the second supporting frame is able to be received toward the first supporting frame to a collapsed position by lifting up the first supporting frame.

Abstract: A vehicle seat has a scissor-type stand vibratable and adjustable in height, with a pneumatic spring and cranks intersecting at a scissor shaft, and a control device for level control and height adjustment of the stand. The control device has a driver, a switching element coupled with the driver, and a valve device controlled by the switching element, for controlling the pneumatic spring. The driver and the valve device are kinematically assigned to different parts of the stand, such parts being movable relative to one another. The switching element is spaced from the shaft and rotatably supported on the first crank. The valve device is connected with the first crank, and the driver is configured as a Bowden cable, the core of which is coupled with the switching element, and the jacket of which is fixedly connected with the second crank.

Abstract: The invention concerns a spring system for use in vehicles for adjustment of the suspension characteristics, comprising at least one spring element to provide a spring force, an upper and a lower arrangement area to receive forces, a scissors-type frame arranged between the upper and the lower arrangement area for coupling the spring element with at least one force acting on one of the arrangement areas. According to the invention the spring element is coupled with a deflection means to influence the spring force and between the deflection means and a segment of the scissors-type frame an active connection can be created to transmit forces.

Abstract: A scissor suspension mechanism, optionally used as a seat base, comprising both small footprint base and movable element, a set of two pairs of crossed first and second scissor arms and a linkage assembly including a plurality of pivot interfaces and linkages; which are designed in a way that the crossed first and second scissor arms describe, during the total elevation stroke of the movable element with respect to the base element, both positive and negative angles with respect to each other while passing through a null angle at which the overall mechanism length is maximal.

Abstract: Spring-mounted vibration system to reduce vibration with a first spring-mounted part and a second spring-mounted part, wherein the first spring-mounted part and the second spring-mounted part can oscillate relative to each in at least one vibration direction and at least one of the spring-mounted parts can be exposed to a return force on a vibration movement. A control unit is arranged with at least one travel linkage which is connected with at least one of the spring-mounted parts and in which is arranged displaceably at least one guide element connected with a spring element generating the return force and/or the other spring-mounted part.

Abstract: According to the invention, a golf bag is disclosed. The golf bag may include a frame and a removable cover. The frame may include a top member at a top most portion of the frame, and a bottom member at a bottom most portion of the frame. The removable cover may include a central portion, a first coupling member, and a second coupling member. The first coupling member may be coupled with at least a portion of a top of the central portion. The second coupling member may be coupled with at least a portion of a bottom of the central portion. The first coupling member may be reversibly coupled with a top most portion of the top member. The second coupling member may be reversibly coupled with a bottom most portion of the bottom member.

Abstract: The invention concerns a pneumatic springing system for vehicles with at least a first and a second part (3, 4), wherein the two parts (3, 4) are mounted vibration-mobile and pneumatically sprung in relation to each other by means of at least one pneumatic spring (8), wherein a first control device (10) is arranged to supply air to and extract air from the pneumatic spring (8), which carries out the extraction of air after a first travel end zone (62) of the springing system has been reached in which the pneumatic spring (8) is in a compressed state, and which carries out the supply of air after a second travel end zone (63) of the springing system has been reached in which the pneumatic spring (8) is in an extended state, wherein a second control device (20) is provided to supply air to the pneumatic spring (8) and disable the extraction of air from the pneumatic spring (8) during a pre-determinable first time interval (61) after a first travel end stop (58) in the first travel end zone (62) has been reached

Abstract: A support assembly includes a first support frame having a first bearing surface, and a second support frame spaced a vertical distance from the first support frame. A biasing member is connected to the first support frame and includes a first end and a second end. The first end bears against the first bearing surface. An adjustment assembly is connected to the second support frame and is adjustable with respect to the second support frame. The second end of the biasing member bears against the adjustment assembly.

Abstract: A control device is shown to reduce a vibration movement of a device vibrating under spring force with at least two mobile parts vibrating in relation to each other, wherein the parts are connected together by means of mobile connecting arms, at least one of the connecting arms is connected with a first spring element end of at least one spring element and between the parts is arranged at least one damping element.

Abstract: A vehicle seat having an oscillatory scissor-type stand and a damper that is articulated at two parts of the scissor-type stand which are movable relative to one another. One end of the damper is articulated at a pin that extends in transverse direction of the seat and extends between two structural parts arranged at a distance from one another in transverse direction of the seat at a part of the scissor-type stand. A bearing bushing is arranged with its axial bushing opening on a tubular component part enclosing the pin, wherein the bushing opening has a spherical longitudinal section with the greatest diameters at the two axial ends and the smallest diameter in the middle of the bushing opening. The bearing bushing is enclosed by a bearing ring of the damper having a shorter axial length than the bearing bushing and is arranged on the bearing bushing at an axial distance from the two ends of the bearing bushing so as to be secured against axial displacement.

Abstract: A seat suspension includes a lower support frame having a first slot, an upper support frame having a second slot, and a biasing member between the upper and lower support frames. A first suspension arm is connected to the lower support frame at a first end for rotation with respect to the lower support frame and connected to the upper support frame at a second end for rotation with respect to the upper support frame. A second suspension arm is connected to the first slot in the lower support frame for rotation with respect to the lower support frame and for translation with respect to the lower support frame along the first slot, and a second end coupled to the second slot in the upper support frame for rotation with respect to the upper support frame and for translation with respect to the upper support frame along the second slot.

Abstract: A vehicle seat, particularly a commercial-vehicle seat is provided with a scissor-type stand (3) which is able to vibrate and which is provided with a top frame (7), two first rocker arms (8a) and two second rocker arms (8b), which intersect in pairs at a scissor axis (10) extending in a transverse seat direction (y). The first two rocker arms (8a) are connected with one another at one end via a transverse tube (18) which extends in the transverse seat direction (y) and are pivotably mounted on the top frame (7) and able to vibrate in the longitudinal seat direction (x) via a bearing mechanism (20). The transverse tube (18) can be locked with the top frame (7) via at least one locking device (31).

Abstract: Spring-mounted vibration system to reduce vibration with a first spring-mounted part and a second spring-mounted part, wherein the first spring-mounted part and the second spring-mounted part can oscillate relative to each in at least one vibration direction and at least one of the spring-mounted parts can be exposed to a return force on a vibration movement. A control unit is arranged with at least one travel linkage which is connected with at least one of the spring-mounted parts and in which is arranged displaceably at least one guide element connected with a spring element generating the return force and/or the other spring-mounted part.

Abstract: What is shown is a vehicle seat having parts for carrying out a vibration movement in the height direction, with the parts comprising the following: a base part, a top part spring mounted relative to the base part, wherein a height adjustable connection frame comprising at least one first frame arm, at least one second frame arm and at least one spring element is arranged between the base part and the top part, wherein a motion sequence of the parts, which may be carried out in a vibration condition by applying a constant force onto the base part and/or the top part, may be varied in a further vibration condition by applying a variable force onto the base part and/or the top part.

Abstract: The present invention provides a frame having variable dimensions, comprising a plurality of telescoping legs arranged in first and second pairs, with each leg of said first pair being rotatably coupled together and each leg of said second pair being rotatably coupled together; and a scissor link mechanism coupled between the legs of said first and second pairs to vary a length of said plurality of legs in response to a distance between said first and second pairs varying. In one embodiment one end of each of said legs of said first pair is rotatably coupled together and one end of each of said legs of said second pair are rotatably coupled together. In this manner, the dimensions of the frame may be varied to accommodate support of a flexible body, such as a plastic bag, paper sack, fabric sack and the like to provide the same with a desired volume and/or an opening of the same with desired dimensions.

Abstract: This involves a cart that can be used in changing a marking module in a xerographic color marking system. The cart has a lifting mechanism securely attached to its upper surface. When the marking module is to be changed and a new replacement module installed, the lifting mechanism is used to support the marking module during each of these procedures. Since the marking modules are relatively heavy (30-35 lbs.), to prevent accidental damage to the module, the cart and its attached lifting mechanism are conveniently used by the customer. The lifting mechanism is made up of an upper cradle, a bottom plate attached to the cart and a movable linkage. The module securely rests in the cradle in both removal and installing operations. It is not uncommon for a customer to want to change a color or colors in one or more modules. This cart and its attached lifting mechanism makes it relatively easy to accomplish this change.

Abstract: A shock-mitigating damper apparatus for vertical shocks has a scissor linkage extending vertically between a base and an object. A damper is also connected between the base, the object, and is mounted to the base for substantially horizontal reciprocating damper motion. An articulated arm assembly connects one end of the damper to the object at a point substantially in vertical alignment with an intermediate pivot point for the scissors.

Abstract: This invention provides a xerographic marking module that has a built-in lifting mechanism that is useful in installing a new module in a xerographic marking system. The lifting mechanism forms the bottom portion of the marking module and comprises an upper cradle to hold the remaining module portion, a lower plate that constitutes the bottom of the module when in a collapsed position, and a movable linkage that connects the cradle to the lower plate. When in installation mode, the linkage creates a vertical force which will upwardly push the cradle (holding the module) away from the lower plate into an installation elevation. After slides in the module and in the color marking system are mated, the lifting mechanism is collapsed and the module pushed into the color marking system or apparatus.

Abstract: A system and method of controlling engine vibration mounted within a vehicle including at least one hydraulic mount, each mount including a fluid chamber. A pair of accelerometers sense relative acceleration across the mount between the engine and the frame and generate a relative acceleration signal. A control unit is electrically connected to the accelerometers. The control unit is adapted to generate an electronic control signal in response to the relative acceleration signal. The control device is responsive to the electric control signal for controlling the damping force of the hydraulic mount. A control algorithm calibrates the control unit such that maximum vibration damping occurs at and around the engine resonance bounce frequency.

Abstract: A vehicle seat, particularly a commercial-vehicle seat is provided with a scissor-type stand (3) which is able to vibrate and which is provided with a top frame (7), two first rocker arms (8a) and two second rocker arms (8b), which intersect in pairs at a scissor axis (10) extending in a transverse seat direction (y). The first two rocker arms (8a) are connected with one another at one end via a transverse tube (18) which extends in the transverse seat direction (y) and are pivotably mounted on the top frame (7) and able to vibrate in the longitudinal seat direction (x) via a bearing mechanism (20). The transverse tube (18) can be locked with the top frame (7) via at least one locking device (31).

Abstract: A seat support assembly includes a base, a plurality of arms each mounted at a first end to the base for movement with respect to the base, and mounted to a seat at a second end opposite the first end for movement with respect to the seat. A torsion spring has a first end defining a length, a second end defining a length, and a coil defining an axis. A first bearing surface abuts the first end of the torsion spring at a first abutment point to define a first moment arm distance. A second bearing surface abuts the second end of the torsion spring at a second abutment point to define a second moment arm distance. An adjustment mechanism simultaneously causes relative movement between the torsion spring and the bearing surfaces to simultaneously change the first moment arm distance and the second moment arm distance.

Abstract: A suspension system for a seat assembly of a machine includes an upper support member and a lower support member. A pair of scissors linkages interconnect the upper and lower support members. Each of the scissors linkages includes first and second arms pivotably attached at central portions thereof. An electronic controller is in communication with a pair of electromagnetic devices positioned at first ends of the first arms. The electronic controller is configured to energize the electromagnetic devices in response to a sensor output.

Abstract: A sliding mechanism includes a main board, a sliding board, two racks, a gear, a connecting member and a winding coil. The main board defines a guiding slot. The two racks are positioned at two opposite sides of the main board. The gear matches each of the first and second racks. The sliding board is slidable along the guiding slot by the connecting member. The winding coil, the winding coil is tightened when the sliding board is pushed toward or away from the main board, and rebounds to its original shape to cause the sliding board to automatically further slide relative to the main board when the gear is detached from one rack and matches another rack.

Abstract: A scissor suspension includes a first arm having a first end and a second end. The first end may be configured for pivotal attachment to a structure and a first bearing may be pivotally connected proximate to the second end of the first arm. A second arm having a first end and a second end may be pivotally connected to the first arm between the first and second ends of the first and second arms. The first bearing may be moveably coupled to the first rail.

Abstract: A shock and vibration isolator for a movie or video camera has a vertical axis system including a base, an arm pivotably attached to the base, and at least one spring connected to the base and to the arm. One or more dampeners are connected to the base and to the arm. A horizontal axis system is supported by the vertical axis system. A leveling linkage connects the vertical and horizontal axis systems. The leveling linkage has adjustment features that allow for compensation of camera lens angulation caused by movement of the camera supported on a vehicle rolling over rough or uneven ground.

Abstract: An improved artificial Christmas tree stand includes a first unit and a second unit. A fixed piece is provided on a top portion of the first unit, and an upper hole is centrally provided in the fixed piece. A moveable piece is provided on each first and second unit, and a hole is centrally provided in the moveable piece. A substantially rectangular hole is provided on the moveable piece. A locking element is connected to the moveable piece of the second unit and has a locking portion. When the stand is not in use, we can disengage the locking portion from two substantially rectangular holes and rotate the first unit with respect to the second unit for a certain angle until they press against each other. Now, the folded stand may be easily stored away.

Abstract: A scissor suspension includes a first arm having a first end and a second end. The first end may be configured for pivotal attachment to a structure and a first bearing may be pivotally connected proximate to the second end of the first arm. A second arm having a first end and a second end may be pivotally connected to the first arm between the first and second ends of the first and second arms. The first bearing may be moveably coupled to the first rail.

Abstract: A portable collapsible stand includes first, second, and third support frames, a work surface frame, and a telescoping strut pivotably connected to the first and work surface frames. The second frame projects perpendicularly from a lower portion of the first frame. A first end of the third frame is rotatably connected to an upper portion of the first frame such that the third frame pivots from a first parallel position to a second perpendicular position with respect to the first frame. An upper portion of the work surface frame is rotatably connected to the upper portion of the first frame. In operation, the stand can assume a collapsed position in which the first, third and work surface frames are generally parallel, and an operating position in which the third frame and first frame are perpendicular and the work surface frame and surface supporting the stand are parallel.

Abstract: A spring-loaded shelf for an existing beverage cooler, which obviates the need for a user to reach more deeply within the confines of the cooler for a beverage as the contents of the cooler become depleted. The spring-loaded shelf has a base, a platform pivotally attached to the base by two scissor-type linkages, and a lifting mechanism for selectively and automatically raising the platform with respect to the base upon the scissor-type linkages, as the weight of the beverages placed upon the platform gradually decreases. Use of the spring-loaded shelf prevents injury to the user while retrieving a beverage from the cooler, and also provides for increased accessibility and visibility of the contents of the cooler.

Abstract: A vehicle seating system includes a top frame for mounting to a vehicle seat. A bottom frame is provided for mounting to the vehicle and a middle frame or linking system movably mounts the top frame to the bottom frame. The middle frame includes two pair of scissor arms with rollers at the ends of the scissor arms. The top frame has four corners with roller tracks at each corner. The bottom frame also has four corners with roller tracks at each corner. Included among the roller tracks of the top and bottom frames is a single pair of curvilinear tracks, a pair of pivotal connecting tracks and two pair of linear tracks. A regulator system is also disclosed to regulate the amount of fore and aft travel of the top frame.

Abstract: A suspension system for a seat. The suspension system includes a first frame member, a second frame member connectable to the seat and movably coupled to the first frame member, a suspension member coupled to both the first frame member and the second frame member and suspending the second frame member above the first frame member, an adjustment mechanism coupled to the suspension member and manually manipulatable by an operator to adjust the stiffness of the suspension, a handle movable along a portion of the adjustment mechanism and facilitating manual manipulation of the adjustment mechanism, and an engaging member resiliently resisting movement of the handle under its own weight along the portion of the adjustment mechanism.

Abstract: A vehicle seating system includes a top frame for mounting to a vehicle seat. A bottom frame is provided for mounting to the vehicle and a middle frame or linking system movably mounts the top frame to the bottom frame. The middle frame includes two pair of scissor arms with rollers at the ends of the scissor arms. The top frame has four corners with roller tracks at each corner. The bottom frame also has four corners with roller tracks at each corner. Included among the roller tracks of the top and bottom frames is a single pair of curvilinear tracks, a pair of pivotal connecting tracks and two pair of linear tracks. A regulator system is also disclosed to regulate the amount of fore and aft travel of the top frame.

Abstract: A pneumatic motor vehicle seat, whose static height is held constant independently of the weight of the respective seat occupant. The inventive device provides a magnetically actuated air valve (16) which is enclosed 20 in a plastic valve housing for aerating and deaerating the pneumatic valve. The air valve is controlled by an external permanent magnet and according operates, quietly, cleanly and with little wear. Also a motor vehicle seat includes an integrated height adjustment mechanism, comprising a control system which automatically and simultaneously dampens the vehicle seat vibrations to a maximum, whilst the static height is being adjusted.

Abstract: A height adjustable seat suspension having first and second bases connected by a linkage assembly with an air spring and shock disposed between the bases. The shock dampens vertical movement of the bases and the air spring increases in air volume to raise the seat height of the suspension and decreases in air volume to lower the seat height of the suspension. A threaded rod is also included as part of the shock which is threadably engaged with a collar that is rotated by a drive source. The engagement between the threaded portions of the rod and collar axially repositions the rod with respect to said collar to change the effective length of, the shock.

Abstract: A shock absorbing platform includes a bottom plate and a top plate joined to one another at their respective rearward and side peripheral edges by elongate rigid links that enable the plates to remain in parallel relation to one another as the top plate moves in relation to the bottom plate. In a first embodiment, an opening formed in the bottom plate accommodates the upper end of a platform-supporting pedestal so that the platform may be retrofit onto a pre-existing pedestal. The forward edge of the platform is open so that height-adjusting and seat-rotating pins are readily accessible. A cylinder is pivotally mounted on each outboard side of the platform and its plunger bears against a roller of a truncate link assembly that interconnects the top and bottom plates at their respective forward edges. Downward forces applied to the top plate are resisted by the cylinders.

Abstract: The present invention relates to a vehicle seat, which can normally move between a lower end position and an upper end position. The seat comprises a bellows for cushioning/dampening movements of the seat in a vertical direction and also a belt reel which together with a belt is capable of locking the position of the seat at an optional height between the end positions.

Abstract: The preferred embodiment of a multi-functional apparatus employs a single electromagnetic device for selectively actuating at least two seat support movement mechanisms. In another aspect of the present invention, a single electric motor selectively actuates three movement mechanisms for a seat through three otherwise independent power transmission devices. Yet another aspect of the present invention employs an electronic control unit to automatically cause coupling of the electromagnetic device with the desired movement mechanism.

Abstract: A mechanical seat suspension between upper and lower supports comprises a scissors arms linkage and a support pivot assembly allowing height adjustment to multiple positions. The pivot assembly carries most of the seat load and comprises a pair of lever arms, a pair of bell cranks, a height adjustment latch including multiple height adjustment detents, a pair of latch supports and a pair of tension springs to provide height-adjustable suspension. The seat suspension also preferably includes a damper such as a shock absorber. The latch includes a plurality of detents which alternatively work to adjust the height of the seat. A moveable pin is disposed within the latch support to engage a detent of the latch to establish the adjustable height of the seat. The moveable pin is moved into a disengagement position by lifting the seat to its maximum raised position whereby an abutment surface on the latch forces the moveable pin rearward.

Abstract: A vehicle seat suspension having a scissors arm linkage disposed between a platform and base with a link pivotally connected at one end to a scissor arm of the linkage at a point spaced from a pivot interconnecting scissor arms of the linkage and operably connected at its other end to a slide carried by the platform for communicating scissor linkage motion to a spring carrier also connected to the link. The carrier includes at least one coil spring held captive preferably in compression between two spaced apart brackets, one of which is pivotally connected to the end of the link adjacent the slide. The point of pivotal attachment of the link to the scissor arm is spaced from the linkage pivot to create a moment about the pivot tending to resist collapse of the linkage when force from the spring is communicated to the linkage.

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: A lift table includes a support table assembly mounted on a scissor arm mechanism. The support table assembly is raised and lowered automatically upon the imposition or removal of loads so that the height of the plane on which articles are being handled remains generally constant. Raising and lowering is effected via a lift spring assembly that acts without the assistance of any pneumatic or hydraulic actuators. The scissor arm mechanism of the lift table has angled arms and low-friction rollers to facilitate raising and lowering of the support table assembly and optimizing operation of the lift spring assembly. The resulting mechanically operated lift table is simple, reliable, and can be easily transported from location to location.

Abstract: A suspension for a vehicle seat having a scissors arm linkage with a load carrying flexible member secured to a spring and in operable contact with a cam-shaped pulley carried by the linkage for producing a suspension of compact structure, which enables seat height to be adjusted independently of weight adjustment, and which produces a suspension having desirable load-deflection characteristics. The suspension has a platform for carrying the seat which overlies the linkage and a base underlying the linkage that supports the suspension and permits mounting to the floor of a vehicle. Weight adjustment of the suspension is accomplished by selectively tensioning the springs without changing the distance between the platform and base. Height adjustment of the seat is accomplished by moving the spring and flexible member in unison to controllably collapse or expand the linkage thereby selectively changing the distance between the platform and base.

Abstract: A counterbalanced adjustable height load bearing support structure comprises a spring biased arm having a cam surface thereon cooperates with a follower of a vertically movable support assembly supporting a load bearing surface. The cam surface in preferred form is generally concave upwardly and has a profile defined by the expressionsRx'=r cos .gamma.+(d-r.sub.r) cos (.beta.+.theta.)Ry'=r sin .gamma.+(d-r.sub.r) sin (.beta.+.theta.)where Rx' and Ry' are a local coordinate system on the cam arm, r represents the distance between the cam surface and the center of rotation of the cam arm, .gamma. is the angle of rotation of the r vector with respect to the x' coordinate system, .theta. is the angular rotation of the cam arm, .beta. is an angle normal to the cam surface at its point of contact with the follower as measured relative to the world coordinate system, d is the distance to the center of curvature of the cam profile and r.sub.r is the radius of the cam follower.

Abstract: A counterbalanced adjustable height load bearing support structure with a pretensioning mechanism comprises a pair of pivotable arms each having a free end in engagement with a support assembly and being biased by a torsion spring. A lever arm is connected to each torsion spring and exerts a biasing force on the pivotable arm when the lever is rotated, thereby preloading the springs. A cable connects the lever arms and passes over a central bushing. The bushing receives a threaded shaft which may be turned to move the bushing and thereby adjust the tension in the cable. Because the cable is capable of sliding engagement with the bushing, tension in the cable is substantially uniform throughout its length and thus the resultant forces on the lever arms is approximately equal. Correspondingly, the forces on the two pivotable arms and associated support assemblies is approximately equal, whereby binding or racking of the support assemblies is minimized as the support surface is raised or lowered.

Abstract: A lift table that consists of a base and a table attached on the right and left by pairs of scissor links. The table is raised through the use of a compression spring. The spring is compressed through the weight of the load on the table, thus creating a lift table which maintains a set height for the load on the table. The spring is positioned with one end attached to either the top or bottom end of one of the pair which form the scissor-link mechanisms, and with the other end connected to the other link, which intersects the first. One end of the spring is attached to a screw slider mechanism which is adapted to move along the length of the second link.

Abstract: Disclosed is a shock absorbing suspension system supporting a seat on a floor of a vehicle. The suspension system includes a hydraulic bag filled with a liquid and coupled to support the seat on the floor, the hydraulic bag having a valve orifice. The suspension system also includes a reservoir partially filled with liquid, having a lower orifice, an upper orifice, and a baffle positioned adjacent the lower orifice to impede the liquid from escaping through the upper orifice. An adjustable valve has an internal passageway communicating with the hydraulic bag via its valve orifice and the reservoir via its lower orifice to allow the liquid from the hydraulic bag to pass into the reservoir. The passageway can be made sufficiently small to dampen motion of the seat toward and away from the floor. The reservoir includes a supply of gas in direct communication with the liquid, the gas being compressed when the liquid enters the reservoir through the valve, thereby providing a spring.