Abstract: Height-adjustable toilet having a fixed frame with a vertically mounted sliding frame and a toilet bowl, wherein the sliding frame couples to the fixed frame by a vertical linear drive member and has a face plate where an intermediate member is mounted. A flat cover is fixed to the fixed frame, with a window formed from below which is not closed, having a width corresponding to a width of the intermediate member and the inner edges of which extend towards the intermediate member over the peripheral edges of the face plate of the sliding frame, in front of which the flat cover is projected, the toilet bowl being seated on the intermediate member. The lower end part of the fixed frame having vertically interconnected horizontal slats with surfaces parallel to a surface of the face plate, the first slat being attached to the lower edge of the sliding frame.

Abstract: Various embodiments set forth an apparatus comprising a base assembly configured to be positioned around a base of a toilet, a movable portion mechanically coupled to the base assembly, and a set of lifting components that lift the movable portion away from a portion of the base assembly.

Abstract: A toilet seat lift assembly includes a toilet seat that is mountable to a toilet and the toilet seat has a lower half and an upper half. A set of first brackets is each movably coupled between the lower half and the upper half of the toilet seat. A set of second brackets is each movably coupled between the lower half and the upper half of the toilet seat. A lifting unit is movably coupled to the upper half of the toilet seat for urging the upper half into a home position or a deployed position. A remote control is in communication with the lifting unit for remotely actuating the lifting unit into the lowering condition or the lifting condition. In this way the remote control facilitates a person to either lift or lower themselves onto the toilet.

Abstract: An analytical toilet comprising a bowl for receiving excreta from a user; and a lid adapted to cover the bowl and form an airtight seal between the bowl and the lid forming a sealed chamber; and at least one fluid outlet for cleaning the bowl is disclosed.

Abstract: A toilet aid apparatus is disclosed herein. The apparatus comprises a support structure, a platform mounted to the support structure, and a displacement unit coupled to the platform to facilitate lifting and lowering of the platform, thereby aiding a person in sitting on a toilet bowl and in standing up subsequent to the use of the toilet bowl. The platform is configured to be rested on a toilet bowl. The displacement means, which can be a hydraulic or a pneumatic cylinder, can be operable via a handheld remote controller.

Abstract: A toilet lift seat positionable over a toilet bowl is liftable by actuators connected to the lift seat such that the lift seat initially pivots forward as the actuators lift the lift seat off of the bowl. An underside of the lift seat is pivotally connected to upper ends of the actuators such that a center of gravity of the lift seat extends forward of a pivot axis of the lift seat. Stops connected to the actuators are separated from a front portion of the lift seat when it is supported in a lowered position above the toilet bowl. When the actuators are engaged to lift the lift seat, the lift seat pivots forward until its underside engages the stops preventing further forward pivoting of the lift seat relative to the actuators as the actuators continue to lift the lift seat. The actuators may be water driven.

Abstract: The U-shaped closet flange is an auxiliary closet flange for use with a toilet that is seated onto an existing closet flange. The U-shaped closet flange fits around the rear base of a toilet from above the floor surface, and which improves the overall stability of the toilet by encircling the rear base of the toilet as well as across tops of opposing side lips of said base of said toilet. The U-shaped closet flange includes two generally parallel members that include grooves thereon to accommodate varying locales of bolts and bolt holes that extend up through the base of the toilet. The parallel members each include parallel base members that engage the floor surface, and interconnect with a cross member. Holes provided on the U-shaped closet flange enable screws to secure both the U-shaped closet flange and toilet in place to the surrounding floor.

Abstract: A gas spring lift assisted toilet seat assembly comprising a generally u-shaped first frame mountable to a toilet bowl at the rear of the toilet bowl through existing bolt holes in the toilet bowl and extending a distance below the top of the toilet bowl; a second frame mountable to a toilet seat at the rear thereof, preferably but not necessarily by attachment to a toilet seat hinge subassembly; at least one gas spring configured in a permanently open position and pivotably attached at a first end to that portion of the first frame extending below the top of the toilet bowl and pivotably attached at a second end to the second frame; and at least one bracket mountable to a forward part of the toilet seat for pivotable engagement of the toilet seat with the forward rim of the toilet bowl.

Abstract: A portable toilet has a bowl, a seat, and legs. The legs are telescopically extensible to allow positioning of the height of the bowl and wheels are mounted to the lower ends of the legs. The legs are spaced apart for fitting on opposite sides of a conventional building toilet and placing the bowl above the conventional toilet. The bowl has an open lower end which is enclosed by a slide door which is moved to open the lower end of the bowl and allow the contents of the bowl to spill therefrom into the conventional toilet. The contents of the bowl fall through the open lower end of the bowl and into the conventional building toilet. Preferably, pneumatic spring assist or an electric linear actuator are provided to aid in lifting and lowering the bowl after use. Water is provided for sweeping waste from within the bowl.

Abstract: A toilet adapter easing access for the disabled comprised of a one-piece welded metal frame with a front side, a back side, a first side, and a second side, with each side welded at a 90° angle. The frame also includes a pair of supporting members welded at a 90° angle between the front side and the back side. A toilet seat assembly attaches to the metal frame, and a first leg assembly and a second leg assembly each attach to the frame using a piano hinge that rotates the leg assembly 90° inward from an extended position. The second leg assembly attaches to an extension so that it rotates to fit flush against the first leg assembly when rotated inward 90°.

Abstract: Devices and methods are presented for elevating seat devices. The device allows a vertical and forward motion of a seat from a first position to a second position. Such motion more resembles a natural body motion during the standing motion. A similar but converse motion is also possible with movement from a standing position to a sitting position.

Abstract: A toilet seat apparatus is provided to assist a user between a standing position and a seated position. In one embodiment, the toilet seat apparatus includes a base portion configured to mount to a toilet bowl proximate a rear portion of the base portion, a biasing mechanism connected to the base portion proximate a forward portion of the base portion, a seat portion hingedly connected to the forward portion of the base portion, the seat portion configured to rotate between a fully inclined position and a closed position, and at least one strut having a first end and a second end opposite the first end, the first end connected to the seat portion and the second end connected to the biasing mechanism, wherein the biasing device biases the seat portion into the inclined position.

Abstract: An adjustable toilet seat lift adapted to selectively raise and lower a toilet to meet the needs and desires of the user. The lift includes an actuator which adjusts a top plate relative to a bottom plate, and is powered by an external power source, or, in the alternative, manually activated.

Abstract: A gas spring lift assisted toilet seat assembly comprising a generally u-shaped first frame mountable to a toilet bowl at the rear of the toilet bowl through existing bolt holes in the toilet bowl and extending a distance below the top of the toilet bowl; a second frame mountable to a toilet seat at the rear thereof, preferably but not necessarily by attachment to a toilet seat hinge subassembly; at least one gas spring configured in a permanently open position and pivotably attached at a first end to that portion of the first frame extending below the top of the toilet bowl and pivotably attached at a second end to the second frame; and at least one bracket mountable to a forward part of the toilet seat for pivotable engagement of the toilet seat with the forward rim of the toilet bowl.

Abstract: The power actuated toilet seat device provides a pair of leg assemblies positioned on opposites sides of a toilet bowl, an expansion cylinder disposed longitudinally on each hind leg, a receiver/activator disposed downwardly in each expansion cylinder, an expansion lift arm disposed upwardly on each expansion cylinder, a follower disposed perpendicularly inward atop each expansion lift arm, a seat having a front spaced apart from a rear, and two spaced apart sides, a slot disposed laterally within each seat side, each slot in receipt of one of the followers of one of each of the expansion lift arms, a hinge disposed downwardly and at the front of the seat, the hinge selectively affixed forwardly to an existing bowl of an existing toilet, a control means configured to control lifting and pivoting of the seat, the control means in communication with each receiver/activator.

Abstract: A sit/stand assistance includes a seat, a frame, a lifting device, and a driving device. This lifting device has a fixed portion connected to the frame and a movable portion pivoted with the seat so as to move the seat up or down. The driving device includes a link, a power portion, and a working rod. One of the power portion and the working rod is pivoted with the link. The other one is pivoted with the frame. When the power portion pushes the working rod, the working rod extends out so as to make said seat moving up or tilting. Hence, it can assist a user from a seated position to a standing position. So, it matches a user's continuous sit-to-stand motion. Plus, it can be directly applied on an existing flush toilet.

Abstract: A power-assisted toilet seat including a lifting and tilting structure that facilitates movement of the toilet seat in a path with a close approximation to the movement of the hips, buttocks, thighs, knees and lower legs, occurring when a person, being supported by the toilet seat, moves between a standing position and a sitting position. Preferably, the power-assisted toilet seat further includes a mechanism for adjusting the height of the seat in the seat's upper most position, to fit the seat's height to the height of the person using the power-assisted toilet seat. The power-assisted toilet seat may further include a device for moving the legs and knees of a sitting person upwardly, thereby bringing the person proximal to a squat position, thereby assisting a person suffering, for example, from constipation.

Abstract: Devices and methods are presented for elevating seat devices. The device allows a vertical and forward motion of a seat from a first position to a second position. Such motion more resembles a natural body motion during the standing motion. A similar but converse motion is also possible with movement from a standing position to a sitting position.

Abstract: Toilet armrest support system comprises a removable armrest platform having a centrally disposed opening that conforms to the opening over an existing toilet bowl rim. The removable armrest platform supports detachable armrests configured to provide a wider area under the armrests for larger individuals requiring more space. The relatively thin and rigid platform slides underneath an existing toilet seat and engages a docking sub-system fastened to existing hinge openings with toilet seat fasteners on the rear of the toilet. The docking sub-system is of unitary construction comprising docking bar, docking ports at each end of the docking bar, and an anchor block between the docking ports. The removable platform easily slides into the docking ports and under the elevated anchor block. A locking mechanism on the anchor block locks the removable platform securely in place which can then be removed just as easily and quickly.

Abstract: A toilet device that can be raised or lowered comprising a generally flat base atop a floor; a toilet bowl disposed above the base via a hydraulic lift cylinder, wherein the hydraulic lift cylinder can move the toilet bowl between an up position where the toilet bowl is raised upwardly away from the floor and a down position wherein the toilet bowl is lowered toward the floor; one or more telescopic support rods for supporting the toilet bowl above the base; a waste pipe fluidly connecting the toilet bowl to a waste line of the plumbing system; and a control device operatively connected to the hydraulic lift cylinder for causing the hydraulic lift cylinder to move the toilet bowl to the up position or the down position.

Abstract: A lift device replaces the toilet seat and seat cover of a conventional toilet. The lift device provides a portion that overlays the toilet bowl area and a portion that supports the forward elements of the assembly. The lift device further provides a toilet seat and a horizontally-disposed seat pivot shaft located to the front of the device. A reversible electric motor with a worm gear drive engages a worm wheel segment attached to the seat pivot shaft for raising and lowering the toilet seat as desired or required. This action assists the user in positioning himself or herself onto the toilet and in lifting the user from the toilet. The raising and lowering movement can also be alternatively actuated by the user or by an assistant-actuated override device, such as when the user is assisted by a care giver.

Abstract: Devices and methods are presented for elevating seat devices. The device allows a vertical and forward motion of a seat from a first position to a second position. Such motion more resembles a natural body motion during the standing motion. A similar but converse motion is also possible with movement from a standing position to a sitting position.

Abstract: The present invention, hereinafter referred as A Toilet Seat That Lifts, is a specially designed toilet seat featuring an integrated lift mechanism which raises the seat upward and gently sets it atop the bowl after use comprising a hydraulic lift mechanism, incorporated into the base of the unit. This lift features spring loaded hinges which gently raise and lower the seat on demand. This action is automatic, simply by pressing downward on the seat. In another embodiment the Toilet Seat That Lifts is externally connected to a motorized device which controls the lifting action. The Toilet Seat That Lifts, as mentioned, is manually operated, or in the motorized embodiment, operates on conventional 110 volts, 60 hertz power and is connected to a standard power outlet.

Abstract: Devices and methods are presented for elevating seat devices. The device allows a vertical and forward motion of a seat from a first position to a second position. Such motion more resembles a natural body motion during the standing motion. A similar but converse motion is also possible with movement from a standing position to a sitting position.

Abstract: This application provides a mechanism that consists of right and left mounting bases that in different embodiments are adapted for mounting on a variety of different chairs. These mechanisms have roller tracks that have been designed on a radius with the fulcrum or pivot point positioned very close to where the center of mass is located, for a wide spectrum of different sized people from children through over-sized adults, to achieve varying degrees of movement. On the inside of the left and right mounting bases are curved slots that are parallel to the curvature of the roller tracks where guide members on the front and rear mounting brackets keep the seat and back rest from coming off the chair. There are front and rear rollers that traverse within the roller tracks that pivot on axles in the front and rear mounting brackets. In the curved slots on the sides are adjustable stop pins that limit the tilt or travel of the seat and back rest.

Abstract: A lift device replaces the toilet seat and seat cover of a conventional toilet. The lift device provides a portion that overlays the toilet bowl area and a portion that supports the forward elements of the assembly. The lift device further provides a toilet seat and a horizontally-disposed seat pivot shaft located to the front of the device. A reversible electric motor with a worm gear drive engages a worm wheel segment attached to the seat pivot shaft for raising and lowering the toilet seat as desired or required. This action assists the user in positioning himself or herself onto the toilet and in lifting the user from the toilet. The raising and lowering movement can also be alternatively actuated by the user or by an assistant-actuated override device, such as when the user is assisted by a care giver.

Abstract: A movable auxiliary sanitary care apparatus includes a support unit, a lifting unit, a water supply unit, a control unit built in the outer shell unit to modulate and control water temperature and warm temperature of the seat cushion and the extension and retraction of the cleaning nozzle unit, a waste storing unit and a riding unit having a seat cushion and an outer lid. The seat cushion warms up the user's hip after the user is seated. The water supply unit is driven by the control unit via the control panel of the outer shell unit to clean the anal part of the user directly after evacuation to have the waste solely collected in the waste storing unit. The apparatus has the additional convenient function that the lifting unit can lifts the seat cushion gradually to help push the user to stand up from the seat cushion after evacuation.

Abstract: A raiser seat for assisting a person from a sitting to a standing position is described. The seat comprises: a seat frame (4); a seat (10) supported for movement relative to the seat frame between a lowered position and a raised position; and a movement mechanism for moving the seat between the lowered and the raised positions. The movement mechanism comprises at least one cam (104) and the seat rests on the at least one cam such that rotation of the at least one cam results in movement of the seat relative to the seat frame.

Abstract: A hydraulically or pneumatically powered toilet assist lift device for use by disabled persons is described that includes a frame having a forward end and a rearward end for placement around a toilet commode, the frame having a lower frame portion for attachment to the floor surface that supports the commode and an upper frame portion hingedly attached to the lower frame portion at the forward end thereof, a toilet seat attached to the upper frame portion, and a pair of hydraulic or pneumatic cylinders interconnecting the upper frame portion with the lower frame portion at the rearward end thereof whereby operation the cylinders rotates the upper frame portion between a lowered position and a raised position.

Abstract: A support apparatus for use with an appliance, the apparatus having a substantially rigid support member adapted to be engaged by a human being for access to the appliance; an assembly mounting the support member on the appliance for movement through a range of positions between a primary position and a secondary position elevated from the primary position; and a mechanism for moving the support member between the primary position and the secondary position to move the human being engaged therewith between the primary position and the secondary position.

Abstract: A powered lift toilet seat including a toilet seat for sitting on, a back support for supporting a back of a person sitting on the toilet seat, and an actuator connected to the toilet seat and the back support by a linkage device for raising and tilting the toilet seat and for moving the back support outwards.

Abstract: Apparatus usable in a hospital, nursing home and assisted care facility environment to assist physically impaired persons in sitting down and standing up from a toilet including a frame having a rotatable platform incorporating an integral toilet seat rollable into position above the bowl of a toilet whose seat is raised for use.

Abstract: An apparatus to automatically raise and lower a planar member, particularly a seat, that includes a number of pivotally connected support members, all attached directly or indirectly to a base member, one of the support members being mechanically actuable, vertically extending, and vertically extendable. The seat or planar member has a range of motion that is restricted to the middle portion of the base member, the base member having a portion extending forwardly therefrom.

Abstract: A height adjustable toilet seat apparatus for disabled users includes a toilet seat having a hinged lid. The apparatus may be fixed to a toilet bowl or to a wheelchair and includes telescopic legs for supporting the toilet seat and lid at different heights. A lid opening mechanism is operated by a foot lever slidably connected to at least one of said legs. A catch is biased to a holding position for holding the lid in a rotated attitude and a foot peddle and handle are provided to release the catch.

Abstract: A powered auxiliary toilet seat lift provides a U-shaped casement formed by two similar elongate side members interconnected by a forward end plate to fit about a toilet stool and support a toilet seat structure thereabove for vertical and forwardly and downwardly angulated motion. Each casement side member is peripherally defined to create an internal chamber carrying similar elongately spaced lateral pairs of forward and rearward compound jackscrews that pivotally interconnect with the toilet seat structure thereabove. Powering mechanism provides separate electric motors powering each jackscrew that are controlled by a computerized feedback type circuitry for manually selectable or pre-programed motion of the toilet seat structure.

Abstract: A toilet-seat positioner has a base frame (1) with a first-side rod (2), a second-side rod (3) and a frame-front rod (4). The first-side rod is made to be placed beside a first side of a toilet bowl (5). The second-side rod is made to be placed beside a second side of the toilet bowl. The first-side rod and the second-side rod are attached to the frame-front rod for bracketing the toilet bowl. In the absence of a toilet bowl between the first-side rod and the second-side rod, the base frame can be positioned over a portable defecation container (22) which can include a bed pan, a pot or a portable toilet. A first pneumatic cylinder (10) has a bottom end attached pivotally to an aft end of the first-side rod. A second pneumatic cylinder (11) has a bottom end attached pivotally to an aft end of the second-side rod.

Abstract: A toilet seat lift comprising a base having opposite sides, a seat support mounted on the base for pivotal movement about a generally horizontal axis extending side-to-side with respect to the base between a lowered position and a raised position, a seat on the seat support having an opening therein adapted to overlie a toilet, and a power actuator for pivoting the seat support from its lowered position to its raised position.

Abstract: A toilet seat lifting mechanism includes an upstanding base frame, a movable frame pivotally connected at a front end to a top front of the base frame, a toilet seat support pivotally connected at a rear edge to a rear end of the movable frame, and a toilet seat pivotally connected at a rear end to the rear edge of the toilet seat support to flatly position on a top of the toilet seat support. A lifter is mounted to one side of the base frame to gradually lift the rear end of the movable frame, so that the toilet seat support and the toilet seat are forward inclined to gradually move a user sitting on the toilet seat into an upstanding position.

Abstract: A toilet seat lift aids the elderly and/or the physically disabled in utilizing a toilet. The toilet seat lift includes a conventionally shaped toilet seat affixed with arms, similar to arms on a chair, which are located approximately 8 inches above the seat surface. A control panel with raising and lowering control buttons is provided on one of the arms. An electrical or battery operated hydraulic power pack provides power to a hydraulic cylinder, which raises and lowers the seat. The toilet seat lift attaches to a conventional toilet by use of the two mounting flanges provided for a conventional toilet. The toilet seat lift utilizes a pair of hydraulic cylinders that telescopically expand and contract so as to raise and lower the toilet seat as desired.

Abstract: A toilet stool capable of using comfortably without cleaning is provided. The toilet stool comprises a main body 10, a seat 11, a cover 12, injection means 41 and 42, and a control means. The main body 10 can preserve stool temporarily therein. The seat 11 is formed on the main body 10. The cover 12 performs opening and closing operations by rotating about a horizontal axis with respect to the main body 10. The injection means 41 and 42 perform a cleaning operation by injecting pressure liquid for cleaning. The control means causes the injection means 41 and 42 to perform the cleaning operation on the condition that the cover is closed.

Abstract: An elevating mechanism for assisting patient in using a toilet alone includes a base having a left and a right side frame, on which four links and an extension arm are symmetrically provided. When the two symmetrical extension arms are actuated, the four links on both side frames are lifted to ascend a seat and two armrests, so that an aged or a patient sat on the seat is lifted to an almost upstanding position without the need of supporting his or her weight completely on two weak legs.

Abstract: A lift is provided for placement over a conventional toilet. The lift includes a raising and lower mechanism which assists users in sitting and standing, a washing mechanism which is used to wash the lower extremities after toilet use, and a drying mechanism which is used to dry the lower extremities after use of the washing mechanism. The lift can be placed inside a housing which is useful for concealing the lift. Advantageously, the washing mechanism is adapted to be stored in a position which is unlikely to be soiled by waste entering the toilet basin and shiftable to a position wherein the lower body parts of a toilet user can be washed. Additionally, the shiftability of the washing mechanism provides a more thorough wash due to its ability to direct a water stream in any direction.

Abstract: A toilet seat apparatus including a base member adapted for selective attachment to a toilet, a unitary one-piece seat pivotally secured to the base member such that the seat may rotate forward, and an energy storing strut including a first end coupled to the base member and a second end coupled to the seat.

Abstract: A toilet seat lift comprising a base having opposite sides, a seat support mounted on the base for pivotal movement about a generally horizontal axis extending side-to-side with respect to the base between a lowered position and a raised position, a seat on the seat support having an opening therein adapted to overlie a toilet, and a power actuator for pivoting the seat support from its lowered position to its raised position.

Abstract: The mobile seat lifting apparatus pivots a seat member between a sitting position and a standing position and includes a frame assembly and a seat assembly pivotally connected thereto, an actuator connected to the seat assembly, and a driving mechanism connected to the actuator to pivot the seat assembly between the standing position and the sitting position. The frame assembly includes a floor brace that is able to securely support the remainder of the frame assembly and the attached seat assembly with a user sitting thereon. The frame assembly further includes a seat brace and a support arm, wherein the support arm connects the seat brace with the floor brace. The actuator is preferably connected between the floor brace and the seat brace such that the actuator additionally supports the seat brace in either the standing position or the sitting position.

Abstract: An upper front annular frame and a lower annular frame have pivotally connected front portions, and a seat overlies the frames and has a rear portion pivotally connected to a rear portion of the upper frame. A pair of scissor linkages are connected to corresponding opposite side portions of the frames and have forwardly projecting arms supporting rollers engaging a bottom surface of the seat. A motor driven screw jack is supported by a bracket mounted on one side portion of the lower frame and is connected to tilt the upper frame between a horizontal position adjacent the lower frame and an elevated inclined position while the scissor linkages automatically move the seat between a horizontal position and an inclined elevated position projecting forwardly of the frames.

Abstract: An apparatus is disclosed for moving a toilet seat between a lowered position adjacent a toilet bowl and a raised, tilted position above the toilet bowl to assist a physically disabled person between an upright position and a seating position for using a toilet. The apparatus includes a toilet seat having a passageway therethrough, a support structure positioned about a base portion of a toilet bowl, a linkage mechanism attached to the support structure for raising the toilet seat directly above the toilet bowl and for tilting the toilet seat such that the rear portion of the toilet seat assumes a vertically higher position than a front portion of the toilet seat, and a power mechanism for urging the toilet seat between the lowered position and the raised, tilted position.

Abstract: A toilet bowl (2) having a seat (7) held by bolts passing through a rear portion (4) of toilet bowl (2) is provided with a grab rail support comprising a mounting portion (3) secured by the bolts and side rails (8) rigidly connected to mounting portion (3) and extending forwardly close to the outer surface of the toilet bowl (2). Near the front of the toilet bowl (2), side rails (8) curve upwardly and are configured to form rigid hand pieces which can be gripped by persons lowering themselves onto and raising themselves from the toilet seat.

Abstract: A height adjustable toilet seat including a frame member disposed on opposing sides of a toilet. The frame member has sliding plates slidably disposed thereon. The sliding plates have a toilet seat secured therebetween whereby the toilet seat is positioned over a toilet bowl of the toilet. A water supply conduit is provided that is coupled with a standard water supply line. The water supply conduit has a bifurcated outer portion for positioning with respect to the frame member. A pair of cylinders are positioned underneath the sliding plates. The pair of cylinders each have a water inlet in fluid communication with the bifurcated outer portion of the water supply conduit. The pair of cylinders each have a piston extending upwardly therefrom and securing to an underside of the sliding plates. Each of the cylinders has a water outlet. A water outlet conduit is provided that is comprised of a bifurcated portion coupling with the water outlets of the pair of cylinders.

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