Abstract: A dual-purpose folding table comprises a table board and two supporting frames. An upper portion of an outer leg pipe is pivotally connected to a rear portion of a side of the table board. A front portion of a bottom surface of the table board comprises a blocking portion corresponding to an inner leg pipe. The two supporting frames comprise a hook structure. The outer leg pipe is sleeved with a sliding sleeve located above a rotation point of the inner leg pipe and the outer leg pipe. A supporting rod is connected between a middle portion of the side of the table board and the sliding sleeve. Two ends of the supporting rod are pivotally connected to the sliding sleeve and the table board. The sliding sleeve is disposed with a locking member for locking the sliding sleeve to the outer leg pipe.

Abstract: A motorized desktop stand unit having a main surface assembly designed to accommodate a monitor or laptop and a secondary surface assembly designed to accommodate a keyboard. The desktop stand unit also has a frame assembly having an upper frame and a lower frame. An elevation mechanism is provided between the upper frame and lower frame. A switch provided in the main surface assembly, when actuated, causes the elevation mechanism to adjust the space between the upper frame and lower frames, changing the height of the main surface assembly.

Abstract: Adjustable organizer shelf system and assemblies for use with an appliance are provided. Shelf assembly includes a pair of brackets and a fixed shelf mounted between the brackets. Shelf assembly also includes a movable shelf with a pair of rear lower hinges and a pair of lower guides. Shelf assembly also includes a lifting arm assembly attaching the movable shelf to the brackets. The lifting arm assembly can include a pair of lifting arms attached to each of the brackets. Lifting arm assembly also include an upper rear hinge affixed to each bracket, an upper guide affixed to each bracket, and a roller disposed within each of the upper guides and lower guides. The end of each lifting arm can be fastened to one of the rollers disposed with each of the guides.

Abstract: A refrigerator includes a lift that moves a container upward and downward. The refrigerator may include: a cabinet having a storage chamber provided therein and an opening; at least one door provided such that a front of the storage chamber provided in the cabinet is opened and closed; a cooling device cooling the storage chamber; the lift provided at a side of the storage chamber to fold downward and unfold upward so as to move the container upward and downward; and an anti-loosening device provided at a side of the lift and allowing the lift to rotate relative to a front end thereof when the lift is removed upward so as to maintain a folded state of the lift.

Abstract: A height adjustable desktop includes an upper work surface platform, and a base platform, which configured to rest on an existing desk, platform, surface, or table. The height adjustable desktop further includes a height adjustment mechanism that includes two sets of two arms that connect at pivot points along their lengths so that the arms configured to move in a scissoring motion to raise and lower the upper work surface platform. The height adjustable desktop also includes two actuators that apply a force to the two sets of two arms, the actuators each containing feedback sensors that provide data regarding the current position and distance each actuator has extended, retracted or moved.

Abstract: The invention provides a stand using two legs which are selectively elongated. Ideally, each leg has two spaced apart wheels allowing the stand to be readily moved. The legs are connected by a scissor member which allows the assembly to be collapsed for storage and easy movement. A receiver for a paper roll is attachable to the top of both legs. A roller, from which paper from the paper roll extends. The legs are manually extended either by hand or in concert using a winch assembly connected to both legs.

Abstract: A motorized desktop stand unit having a main surface assembly designed to accommodate a monitor or laptop and a secondary surface assembly designed to accommodate a keyboard. The desktop stand unit also has a frame assembly having an upper frame and a lower frame. An elevation mechanism is provided between the upper frame and lower frame. A switch provided in the main surface assembly, when actuated, causes the elevation mechanism to adjust the space between the upper frame and lower frames, changing the height of the main surface assembly.

Abstract: An apparatus for holding one or more boards during martial arts training, includes a support frame configured to hold various training station assemblies, each of the station assemblies structured differently to provide different training functionality, the first station including a number of plates that work together to hold the board(s) at a position such that upon striking of the board(s) a portion of the first station collapses to allow for follow through during the striking motion, the second station including a number of plates that work together to the board(s) at a desired and modifiable angle, and the third station being configured to hold the board(s) at a hanging position beyond the profile of the support frame, which may be positioned on a support base resting on a horizontal surface such as a floor or may be directly affixed to a vertical surface such as a wall.

Abstract: A height-adjustable table structure includes: a tabletop, a first support frame, a second support frame, a first spring, an adjustment unit, a linkage group, and a positioning member. The adjustment member is disposed to the top surface of the tabletop for the user to observe. When the adjustment member is driven to move, the locking member of the linkage group is moved from the locking position to the releasing position, so that the first and support frames are free to rotate. When the adjustment member is released, the locking member will be moved from the releasing position to the locking position, so as to maintain the adjusted height of the table structure. By such arrangements, during the height adjustment of the table structure, the user can clearly see the position of the adjustment member, leading to more intuitive use, achieving easy operation and improved safety.

Abstract: A vehicle seat includes a seat base operably coupled with a seatback and having a seat pan. An upper connector is positioned on the seat pan. A lift assembly is operably coupled with the seat pan and includes a bracket defining a bracket slot. An outer link has a first end rotatably coupled with the seat pan and a second end that includes a lower connector. The lower connector is slidably received by the bracket slot. An inner link has a first end rotatably coupled with the bracket and a second end that defines a link slot. The link slot is configured to receive the upper connector. A sector gear is configured to facilitate vertical translation of the seat base.

Abstract: An assembly for converting motion comprises a first arm and a second arm rotatable about first and second fixed pivots; a third arm pivotably connected to the second arm; a first connecting arm pivotably connected to and extending between the first arm and the third arm; a second connecting arm pivotably connected to and extending between the first arm and the second arm; and a locking assembly comprising a first locking member and a second locking member, the first locking member connected to one of the arms and engaging with the second locking member at one or more positions from the retracted position to the extended position. The assembly may comprise the guide assembly comprising a guide member and an engagement member moveably engageable with the guide member.

Abstract: A device for providing a resting place for toddlers, partly on top of, partly in front of a seat in an object of public transportation. It comprises a suitcase, comprising of a trunk box and a reversible suitcase lid. The suitcase lid is in first position closed and suitable for transportation, while the suitcase lid in another, ready-to-use position, is upside down as compared with the first position and secured over, and to, the trunk box by means of an arranged attachment mechanism. The side of the lid which is facing upwards in the ready-to-use position, is substantially planar and thereby adapted to act as part of a bed base.

Abstract: A pet bowl lift apparatus includes a tray for holding at least one pet bowl and a lift mechanism supported on ground level, detachably supporting the tray upon and above the lift mechanism, and being vertically movable between collapsed and extended states. The lift apparatus also includes a lift control mechanism operable to actuate the lift mechanism between the collapsed and extended states to elevate the tray from proximate the ground level to different elevations above the ground level to enable a person without bending to replace and remove the tray on and from the lift mechanism and to accommodate at the different elevations pets of different sizes. The lift apparatus further includes an outer accordion tubular casing enclosing the lift mechanism and vertically moved between recoiled and extended states by actuation of the lift mechanism between the collapsed and extended states.

Abstract: A placement lifting platform includes a table board, under which a bracket, scaffolds and bases are arranged. The placement lifting platform further includes a locking structure, a constant force structure and a buffer structure. By setting the constant force structure, the buffer structure and the lock structure, a constant lifting force can be provided. The adjustability function makes the platform more convenient and smooth, its buffering avoids the unnecessary collision between parts, with the special locking structure, it has better locking effect and is practical and convenient, the use effect is optimized and the applicability is improved.

Abstract: There is provided a height adjustable desk (5) for placing on an existing desktop. The height adjustable desk (5) comprises a base frame (50) for placing on the existing desktop, a desktop (10) that is connected to the base frame (50) by first (40) and second (45) support members, and a gas strut, wherein the first and second support members (40, 45) are pivotally connected (41) to one another and are pivotable about the pivotal connection to raise and lower the desktop (10) from the base frame (50). The ends of the second support member (45) are slidable along the base frame (50) and along the desktop (10), and one of those ends is pivotably connected to a shuttle, the shuttle being drivable by the gas strut to slide along a shuttle frame of the desktop or base frame.

Abstract: A tray table assembly and aircraft passenger seat arrangement including the same, the tray table assembly including a rail, along which a carriage slides, disposed within an alcove, from which a tray table can be deployed via a link connecting the tray table to the carriage. The link provides both the connection between the tray table and carriage for positioning the tray table horizontally along the rail and the pivotable connections between the tray table, link, and carriage for adjusting the tray table vertically, perpendicular to the rail path. Thus, the tray table assembly may be hidden in the alcove in a stowed position, partially deployed with the tray table vertically offset from the carriage, fully deployed with the tray table outside of the alcove, and any position in between.

Abstract: A hand-operated worm gear height adjustable table includes a table top, a base mechanism, a lift mechanism, and a driving mechanism. The base mechanism includes a base and tracks on the base. The lift mechanism includes two parallel first lift arms and two parallel second lift arms which cross with each other to form X-shaped structures. The driving mechanism is connected to the upper ends of the first lift arms and includes two U-shaped slide rails and a driving shaft penetrating through the upper ends of the first lift arms. The center of the driving shaft is provided with a worm gear and a worm. The outer end surface of the worm is sleeved with a first sleeve component and a second sleeve component with a cavity provided therebetween, and the outer end surface of the first sleeve component is sleeved with the first torsional spring.

Abstract: Disclosed is a lifting desk, comprising a desk support (2), a desk top (1) arranged above the desk support (2), and two X-shaped lifting supports (3) arranged on two sides of the desk support (2). Each of the X-shaped lifting supports (3) comprises a first supporting portion (31) and a second supporting portion (32). A tension spring (7) is arranged between an upper end of the first supporting portion (31) and an upper end of the second supporting portion (32), wherein a movable end of the tension spring (7) is connected to the upper end of the first supporting portion (31), and a fixed end of the tension spring (7) is fixed to the desk support (2) via a distance-adjusting device.

Abstract: A folding scooter frame (100) includes a front frame (1), a rear frame (2), a linkage rod (3) and a seat support frame (4). The front frame (1) and the rear frame (2) are pivotally connected. A front end of the linkage rod (3) is connected with the front frame (1), and a rear end of the linkage rod (3) is pivotally connected with a slider (5). A support rod of the seat support frame (4) is pivotally connected with the slider (5), the slider (5) is slidably provided on the rear frame (2). The linkage rod (3) is able to swing as the front vehicle frame (1) is folded and thus drives the slider (5) to slide so as to make the slider (5) drive the seat support frame (4) to fold. The folding scooter frame (100) has the advantages of quick and convenient folding operations.

Abstract: An adjustable workstation is described. The workstation includes a table top, a legs assembly mounted below the table top, a base frame mounted to the legs assembly, and an adjustment mechanism configured to move the legs assembly to adjust the height of the table top relative to the base frame. The adjustment mechanism can include a gas spring and an actuator. A user can actuate the actuator to adjust the height of the table top. The gas spring can provide force, which aids the user in raising or lowering the table top.

Abstract: The present disclosure relates to an adjustable workstation for attaching to a support surface. The workstation includes a base having at least one fastener for securing the base to the support surface and a column attached to the top surface of the base. The column includes a lift configured to move between a lowered position adjacent to the support surface and a raised position located between the top end and the bottom end of the column. Attached to the lift is a worksurface having a front edge, and an extending member connects the lift to the worksurface. The extendable member is configured to adjust the location of the worksurface longitudinally from a retracted position to an extended position, wherein the front edge of the worksurface is vertically alignable with the front edge of the support surface when the extending member is in the extended position.

Abstract: A power lift platform includes a scissors frame arrangement having a first pair of parallel frame members and a second pair of parallel frame members pivotally connected to the first pair of parallel frame members defining an upper part and lower part for each of the frame members about the pivotal connection. A platform is attached to upper parts of the first and second pairs of parallel frame members. An axle is operably connected to a lower part of each of the first pair of parallel frame members. A pair of wheels operably connect to the axle. A first cross bar connects to a lower part of each of the second pair of parallel frame members. A rechargeable battery is operably disposed on a second cross bar. A electric linear actuator pivotally interconnects the second cross member and a third cross members by way of bracket and pivot pin connection.

Abstract: This disclosure provides an adjustable ergonomic workstation that includes first platform and a second platform that is coupled to and positioned below the first platform, wherein the first platform may be moved between at least a lowered position and a first raised position and wherein the coupling of the second platform to the first platform includes a tilt adjustment assembly wherein the second platform may be adjusted between at least a first angular position and a second angular position relative to the first platform.

Abstract: A selectively deployable drying rack with selectively reconfigurable components is disclosed. The drying rack includes a base and an upper rim. The drying rack further includes linkages to move the upper rim away from and toward the base and a first removable tray and a second removable tray that are configured to fit in the base. The second removable tray may include a utensil compartment with holes, an outer wall, and an inner wall. The upper rim may include a utensil band and/or a wine glass rack. The utensil band may be moveable between a stowed position and an extended position when the utensil band is in use. The wine glass rack may be moveable between a storage position and an upright position when the utensil band is in use. The drying rack may include a stand wire to elevate the base of the drying rack above a surface.

Abstract: A convertible sit-to-stand desk has a desktop that is manually movable into and between a lowered position and a raised position, a base that is configured to support the desktop with respect to a supporting surface, and a supporting frame that supports the desktop with respect to the base. The supporting frame facilitates movement of the desktop into and between the lowered and raised positions. The supporting frame comprises first and second sub-frame assemblies disposed on opposite sides of the desktop, respectively.

Abstract: A desktop workspace that adjusts vertically includes an work surface platform, a base configured to sit on an existing platform such as a desk, a height adjustable mechanism including at least one set of arms that connect at a pivot point(s) creating a scissoring motion as part of the method to raise and lower the said work surface platform to various heights. A locking and unlocking mechanism connected to the height adjustable mechanism. In some cases the apparatus includes an adjustable mechanism to support items such as a keyboard. In some cases the apparatus includes elements to raise items such as a monitor to an additional height.

Abstract: An articulating support arm includes a base, a first set of control arms having proximal ends and distal ends, with the proximal ends of the first set of control arms being pivotally connected to the base. The support arm further includes a second set of control arms having proximal ends and distal ends, with the proximal ends of the second set of control arms being disposed forward of and pivotally connected to the distal ends of the first set of control arms. The distal ends of the second set of control arms also are pivotally connected to a control head, and a locking assembly selectively prevents pivotal movement of the control arms, so as to provide vertical adjustment of the control head relative to the base.

Abstract: A variable height desktop workstation system that includes a base, a variable height platform, a lift mechanism, and a secondary force assist device is provided. The lift mechanism is configured to move the variable height platform within a range of motion between a fully lowered position and a raised position. The lift mechanism comprises a plurality of articulated members and has a lower raising force leverage in a lower part of the range of motion and a higher raising force leverage in an upper part of the range of motion. The secondary force assist device is configured to provide an additional force to the lift mechanism directed to the variable height platform in an upward direction from the fully lowered position towards the raised position only in the lower part of the range of motion so as to compensate for the lower raising force leverage of the lift mechanism.

Abstract: An adjustable bed includes a fixed frame, an articulating frame supported on the fixed frame, first and second leg assemblies, and first and second actuators. The leg assemblies are configured to raise and lower the fixed frame between a lowered position and a raised position. The actuators are disposed and fully maintained within an interior volume of the fixed frame. The first actuator is fixedly secured at a first end to the head end of the fixed frame and operably coupled to the first leg assembly at a second end. The second actuator is fixedly secured at a first end to the foot end of the fixed frame and operably coupled to the second leg assembly at a second end. The first and second actuators are configured to exert a pulling force to raise the fixed frame and to exert a pushing force to lower the fixed frame.

Abstract: A height-adjustable table includes a table top with two support block units, a linkage mechanism including first and second linkages respectively pivotally connected to the support block units, and a lifting control mechanism including first and second sliding tooth racks respectively slidably mounted in respective sliding open chambers of the support block units and respectively pivotally connected to first and second legs of the first and second linkages, two lock mechanisms with center gears thereof meshed with the first and second sliding tooth racks and two operating handles operable to lock/unlock the center gears for allowing the first and second linkages to be extended out or received so as to further adjust the elevation of the table top.

Abstract: A lift table includes a base unit having a supporting beam connected between two legs. An elongated member is connected to a first linking rod, a second linking rod and a third linking rod and is pivotably connected to the legs. The first linking rod, the second linking rod and the third linking rod are pivotable together with the elongated member relative to the legs and are, thus, pivotable relative to the base unit. A telescopic actuator includes two ends pivotably connected to the supporting beam and the second linking rod, respectively. A top board unit is pivotably connected to the first and third linking rods and includes a switch operable to actuate the actuator to proceed with a telescope movement, causing the first and third linking rods to pivot relative to the legs, thereby lifting or lowering the top board unit.

Abstract: A multi-position storage system including a first housing, and a second housing. The second housing is connected to the first housing. The second housing is capable of being moved from a first position with respect to the first housing to a second position with respect to the first housing.

Abstract: Vehicle vibration device for a vehicle seat or a vehicle cabin comprising a lower part and an upper part mounted resiliently with respect to the lower part by means of a damping device, the upper part being mounted suspended on the lower part by means of at least one pivot mounting, the at least one first pivot mounting comprising at least one first lever, the first end of which is attached to the lower part by means of a first pivot axis and the second end of which is attached to the upper part by means of a second pivot axis, the second end being positioned below the first end in a vertical direction, at least one dimension of the upper part and/or at least one dimension of the lower part being variable by means of an adjustment device so as to vary the position of the first lever.

Abstract: A support frame assembly comprises a base and an object support member having a first position and a second position. The support frame assembly may also include a plurality of pivot arms operatively connected to the base and the object support member. At least one of the pivot arms may have an actuator for moving the object support member form the first position to the second position. The support frame assembly may also include an adjustment member operatively connected to one of the plurality of pivot arms to adjust a position of the object support member relative to the base for self-alignment between an object such as a tubular member and a drill head.

Abstract: A liftable table has a table frame, a fixing board, a lifting device, and a table board. The table frame has a main frame and a holding seat. The holding seat is deposited on the main frame. The fixing board is mounted on the main frame. The lifting device is deposited on the holding seat and has a driving set and at least one crossing set. The crossing set is extended from or folded in the receiving space of the holding seat, and is connected to and driven by the driving set. The table board is deposited on the crossing set to move upwardly or downwardly. A user views and operates a computer put on the table board with a sitting or a standing posture, and this prevents the user from using the computer with the sitting posture for a long time and avoids damages to the user's health.

Abstract: A variable height support with a platform and a base supporting the platform and reconfigurable to selectively change a height of a support surface on the platform relative to a subjacent surface. A control assembly is operable to selectively: a) maintain the support surface at a selected height; and b) release the platform to allow the base to be reconfigured to change the height of the support surface. The control assembly has a ratchet subassembly that, with the control assembly in a first state, allows the base to be reconfigured by exerting a continuous upward force upon the platform that causes the platform to elevate and be blocked within a range at a plurality of different vertical locations against downward movement. The control assembly further has an actuator that is repositionable to change the control assembly into a second state wherein the platform can be lowered over the range.

Abstract: A bracket for an electronic device includes a supporting plate and a base. The supporting plate comprises a supporting member and two mounting blocks mounted to the supporting member including two supporting poles. One end of each mounting block is supported by the base. The supporting poles can be mounted to the corresponding mounting blocks to enable the supporting member to be in different positions, thereby changing a distance between a bottom portion of the supporting member and the base.

Abstract: A wheelchair platform comprises a tilting platform for a wheelchair comprising a base to support the wheelchair in use and a back wall. The platform is pivotably connected between a pair of side supports in a compact construction. Actuators, such as hydraulic rams, are operable to tilt the platform. The pivot axis for the platform is forward of the back wall and above the base. The actuators are also forward of the back wall. The platform swings forward when tilting. The base may be hinged approximately half way along its length to allow the front half to be folded over for storage.

Abstract: The present invention relates to an improved trike lift having a vertical extension for engaging a high point of the trike body bottom, and to the methods of making and using the same. The lift has a frame with base arms, lift arms and upper arms that act generally as a parallelogram. One of the upper arms has a pad to engage the body bottom of the trike. The other upper arm has an extension block that can be selectably raised and lowered. In one embodiment, the extension block can be manually raised. In another embodiment, the extension block can be mechanically raised. The lift also has an elevation assembly with a handle having a stepped top arm.

Abstract: A compensation device of a traction sheave elevator is provided. The elevator includes a compensation rope running from an elevator car to a compensation sheave of the compensation device located in the lowermost part of the elevator shaft around which the compensation rope runs. The compensation sheave is vertically guided with respect to the shaft bottom via a guiding structure, which allows a vertical movement of the axis of the compensation sheave. The guiding structure includes at least one scissor joint arrangement having its lower end adapted to be connected with an elevator shaft bottom and its upper end being connected with the compensation sheave axis. An elevator includes such kind of compensation device. Vertical movement of the axis of a compensation sheave can be obtained with a very low shaft height requirement.

Abstract: A variable height trolley and a height displaying assembly thereof, and the height displaying assembly includes a height indicator unit, a spool and an connecting unit. The height displaying assembly obtains a height of platform from a serial mechanical action between the connecting unit and the platform. The height displaying assembly uses mechanical approach to instantly show the height of the platform.

Abstract: A device for holding and carrying various items, e.g., hand tools or other small items, is disclosed. It includes a lower tray, an upper tray, a pair of foldable strut assemblies and a handle. Each strut assembly includes a pair of leg sections pivotably connected together. The strut assemblies are located at diagonally located corners of the trays with their leg sections arranged to be pivoted to an open position, whereupon the upper tray is spaced above said lower tray to provide ready access to any items in said lower tray. Torsion springs are provided to hold the tray in that position.

Abstract: A vertically adjustable platform system includes a lifting tower with a lifting mechanism. A first scissors mechanism is adjacent one face of the tower and a second scissors mechanism is adjacent the other face of the tower. A first platform is disposed on the upper end of the first scissors mechanism and a second platform is disposed on an upper end of the second scissors mechanism. A lifting mechanism has a first lifting element interconnected with the first scissors mechanism or the first platform for moving the first platform vertically. The lifting mechanism has a second lifting element interconnected with the second scissors mechanism or the second platform for moving the second platform vertically.

Abstract: A therapeutic treatment table comprises a frame and a treatment platform that is mounted on the frame and adapted to support at least a portion of the body of a patient. A preferred treatment table also includes an arm support section which is mounted on the frame. The arm support section comprises an arm support that is moveable by a patient on the table independently of the treatment platform.

Abstract: A height adjustable work surface system having an under-mount mechanism pivotably attached at a first end to a mounting bracket for mounting to a secure structure; the under-mount mechanism being further pivotably attached at a second end to an attachment bracket; the attachment bracket further connected to a work surface support designed to connect to a work surface; and by pivoting the under-mount mechanism from a first to a second position the work surface is raised or lowered.

Abstract: The disclosure is directed to a table apparatus. The table apparatus includes a support assembly, a surface assembly and an adjustment assembly. The adjustment assembly allows for the movement of a work surface between a first bottom position and a second top position while remaining in the same, preferably, horizontal, orientation throughout the movement thereof. Additionally, the work surface is permitted to rotate about an axis that is perpendicular to the work surface. A secondary work surface is provided, which, when properly set to the same height, cooperates with the work surface to provide a matingly engaged configuration which allows for a substantially continuous joined work surface, while allowing for rotation of the work surface about an axis that is perpendicular to the work surface.

Abstract: An adjustable desk includes a desk board, a supporting unit, and a first adjusting unit. The desk board includes front and rear ends. The supporting unit disposed between the desk board and the ground includes a first leg pivotally connected with the front end. The first adjusting unit mounted between the desk board and the first leg includes a screw shaft, at least one linkage, and at least one level. The linkage is engaged screwedly with screw shaft. The level pivotally connected between the linkage and the rear end. While the screw shaft is rotated, the linkage is moved axially between two ends of the outer screw portions to drive the level pivoting with respect to the screw shaft. The desk board is pivoted with respect to the first leg to adjust a slope angle formed between the desk board and the supporting unit steplessly without tools.

Abstract: The invention disclosed is a positionable utility tray. The tray apparatus is adapted to be mounted in the interior of an automobile and can be fixed in a chosen position by locking a securing mount into a vehicle receiving socket, such as an auxiliary power outlet. The invention utilizes a securing mount using a tapered plunger and expanding collet to force fingers outwardly onto the socket inner surface, thereby securing the utility tray. The utility tray further utilizes fastener projections to mount tray accessory components such as trash cans, mobile device holders, and the like.

Abstract: A variable height support with a platform and a base supporting the platform and reconfigurable to selectively change a height of a support surface on the platform relative to a subjacent surface. A control assembly is operable to selectively: a) maintain the support surface at a selected height; and b) release the platform to allow the base to be reconfigured to change the height of the support surface. The control assembly has a ratchet subassembly that, with the control assembly in a first state, allows the base to be reconfigured by exerting a continuous upward force upon the platform that causes the platform to elevate and be blocked within a range at a plurality of different vertical locations against downward movement. The control assembly further has an actuator that is repositionable to change the control assembly into a second state wherein the platform can be lowered over the range.

Abstract: A variable height support with a platform and a base supporting the platform and reconfigurable to selectively change a height of a support surface on the platform relative to a subjacent surface. A control assembly is operable to selectively: a) maintain the support surface at a selected height; and b) release the platform to allow the base to be reconfigured to change the height of the support surface. The control assembly has a ratchet subassembly that, with the control assembly in a first state, allows the base to be reconfigured by exerting a continuous upward force upon the platform that causes the platform to elevate and be blocked within a range at a plurality of different vertical locations against downward movement. The control assembly further has an actuator that is repositionable to change the control assembly into a second state wherein the platform can be lowered over the range.