244 results about "Lift chairs" patented technology

A combination lift chair and reclining chair having additional seating and reclining positions is provided with two separate motors and linkages enabling the chair back to be independently placed in various positions and the seat separately movable with the footrest and elevated once the footrest has reached full deployment using the same motor.

A power-assisted heavy lift chair comprises a base assembly. A chair frame is supported on the base assembly. A lift mechanism communicates with the base assembly and the chair frame, and is operable to actuate the chair frame between first and second positions. A transformer provides electrical power to an electric motor. The electric motor provides rotational power to the lift mechanism at a first rate to lift and / or lower the chair frame. The electric motor draws current from the transformer according to a load upon the chair frame. The rate that the electric motor lifts and / or lowers the chair frame depends upon the voltage provided by the transformer. The transformer is operable to provide a generally constant voltage regardless of the current draw of the electric motor. Therefore, the electric motor lifts and / or lowers the chair at a constant rate independent of the load on the chair.

A combination lift chair and reclining chair having additional seating and reclining positions is provided with two separate motors and linkages enabling the chair back to be independently placed in various positions and the seat separately movable with the footrest and elevated once the footrest has reached full deployment using the same motor.

The present invention is a chair having a first seat portion operably associated with a second seat portion, with the first seat portion disposed in the same plane as the second seat portion, and an actuator for moving the first seat portion relative to the second seat portion. When the actuator is actuated, the first seat portion will pivot relative to the second seat portion such that the first seat portion is located in a different plane compared to the second seat portion.

A power-assisted heavy lift chair comprises a base assembly. A chair frame is supported on the base assembly. A lift mechanism communicates with the base assembly and the chair frame, and is operable to actuate the chair frame between first and second positions. A transformer provides electrical power to an electric motor. The electric motor provides rotational power to the lift mechanism at a first rate to lift and / or lower the chair frame. The electric motor draws current from the transformer according to a load upon the chair frame. The rate that the electric motor lifts and / or lowers the chair frame depends upon the voltage provided by the transformer. The transformer is operable to provide a generally constant voltage regardless of the current draw of the electric motor. Therefore, the electric motor lifts and / or lowers the chair at a constant rate independent of the load on the chair.

The invention relates to a lifting chair for a walking disabled person to go upstairs, comprising a chair and a motor. The invention is characterized in that the motor is arranged under the chair, a rotating shaft of the motor is directly connected with a worm which is meshed with a worm wheel which is connected coaxially with a gear; a rack is meshed with the gear and is fixed on the wall at one side of the stairs while the teeth points of the rack go upward; two walking wheels are arranged on the footrest of the chair and supports on the building bevel edge beside the stairs wall; two conductive trolleys are arranged on the backrest of the chair, a track box is arranged by the stairs wall, and two conductive tracks are arranged inside the track box. The invention can allow walking disable persons to sit in the lifting chair to go upstairs for repeated use, solving the technical problem that the walking disabled persons self-go upstairs, with the advantages of simple structure and low cost.

A lift chair includes a seat portion formed therein with an accommodating room that is closed atop by a plane; a cushion deposited on the plane; a lifter mechanism deposited in the accommodating room and having an upper end connected to a bottom of the cushion; and a power source serving to drive the lifter mechanism to operate, thereby lifting or lowering the cushion, horizontally moving the cushion, or tilting the cushion, and in turn assisting a user to stand up or sit down.

A lift-assist chair is provided. The presently-disclosed lift-assist chairs can comprise a seat frame, a seat base that is pivotally coupled to the front edge of the seat frame and can be moved between a depressed position and an extended position, an arm support having a proximate end that is coupled to a lateral edge of the seat frame and a distal end that extends from the top side of the seat frame, an arm that is pivotally coupled to the arm support about a point located between a front end and a rear end of the arm, and an arm connector coupling the arm to the seat base and disposed towards the rear end of the first arm relative to the first arm support. Movement of the seat base between a depressed position and an extended position can assist an individual when sitting or standing from the chair.

The present invention is a chair having a first seat portion operably associated with a second seat portion, with the first seat portion disposed in the same plane as the second seat portion, and an actuator for moving the first seat portion relative to the second seat portion. When the actuator is actuated, the first seat portion will pivot relative to the second seat portion such that the first seat portion is located in a different plane compared to the second seat portion.

A self-recovery lift chair that provides an improved way for an individual who has fallen to return to a seated position and then be able to stand or wheel to another location. The chair includes a lift frame with wheels to allow for mobility, a seat that moves vertically from contact with the floor to variable or above normal seat heights. A lift mechanism comprised of a lifting trolley, which connects to the seat, a reversible drive mechanism, and a detachable actuation means that can be operated by the user or assistant. For safety of the individual and or assistant, brakes keep the chair stationary until it is necessary to be moved, and a pivoting handle allows the lift chair to be moved like a wheel chair or when turned outward as a support point for the assistant during manually assisted transfers. A rechargeable battery provides the lift chair with safe power anywhere.

The invention discloses an intelligent electric wheelchair for rehabilitation training.The intelligent electric wheelchair comprises two wheelchair side frames, a chair back lifting device, wheelchair back frames, an electric push rod, power supply control boxes, front foot rests, damping universal wheels and a back wheel driving system; the two wheelchair side frames are installed on the two sides of the chair back lifting device and connected with the wheelchair back frames through frame connecting parts, the electric push rod, the front foot rests, the damping universal wheels and the back wheel driving system are all mechanically connected with the wheelchair side frames, and the power supply control boxes are electrically connected with the chair back lifting device; the electric push rod is connected with the wheelchair back frames and a chair back plate, connecting rods are connected with the wheelchair back frames and a cushion, and movement of the electric push rod drives the cushion to achieve the angle changes from the horizontal to the vertical.The wheelchair can help a person sitting on the wheelchair to stand, when the person sitting on the wheelchair stands, the person can walk in a wheelchair frame, and information communication between the person sitting on the wheelchair and doctors and family members can be improved through the related systems of the wheelchair.

The invention provides a floor sweeper realizing self-washing of a mop. The floor sweeper comprises a machine body, a fork arm rack, a fork arm, a mechanical arm, a floor-sweeping device, the mop, a mop washing device, a wiping mop washing device, a garbage pouring mechanism, a correcting device and a double-axis-base mechanism, wherein the fork arm rack is mounted on a portal slideway in front ofthe machine body; the mop washing device comprises a mop washing pond, a dewatering device and a washing base; the floor-sweeping device can climb to the floor from a support plate positioned below the machine body under the control of a main machine, and performs floor sweeping in low space under a sofa and a counter; the fork arm lifts chairs and stools, a clamping claw at the front end of themechanical arm clamps shoes and baskets, so that the floor-sweeping device can conveniently sweep the floor positioned below; the washing base can pull out the dirty mop below the floor-sweeping device and then brings the dirty mop to the mop washing pond to be washed, after dewatering, the clean mop is inserted below the floor-sweeping device, so that the floor mopping is cleaner; a wiping mop ona wiping mop base can wipe tables and chairs, tea tables and table boards; the wiping mop base can bring the dirty wiping mop to a wiping mop washing pond to be washed and dewatered; and the fork armand the clamping claw are matched for pouring out garbage in a dustbin of the floor-sweeping device. The sweeper realizes multiple purposes.

A portable, powered lifting chair provides a means with which to easily lift and transport a fallen person, with safety for both the fallen person and the attendant. A single attendant can operate the present invention, negating the need for multiple attendants to lift a single person. The lifting seat is battery powered allowing for remote operation and, when combined with a variable speed hand controller, allows for an adjustable lifting speed suitable for any scenario. The seat lifts to a height of 39″, allowing it to be used to not only transport patients to a bed or a chair, but also to transition them from a prone position to a standing position. The combination of linear bearings, linear rail, and a linear actuator attached directly between the lifting seat and the seat frame serve to ensure the lifting seat does not become misaligned or improperly tilted during use. With the frame on casters, it is highly maneuverable and able to be used in tight confines.

A self-recovery lift chair provides an improved way for an individual who has fallen to return to a seated position and then be able to stand or wheel to another location. The wheeled chair includes a lift frame and a seat suspended from a lift mechanism in the frame. The seat moves vertically from contact with the floor to variable or above normal seat heights. Seat sides fold from vertical to horizontal to serve as a loading sideboard. The lift mechanism comprises a lift trolley connected to the seat, a reversible motorized drive mechanism powered by a rechargeable battery, and a detachable actuation switch that can be operated by the user or an assistant. The lift trolley is stabilized in the frame by a vertical stabilizing rod connected on each side of a drive receiver on a central vertical threaded drive rod. Brakes keep the chair stationary until it is necessary to be moved. A pivoting handle allows the lift chair to be moved like a wheel chair or when turned outward as a support point for the assistant during manually assisted transfers.

A seating unit includes: a base; a frame with arms on opposing sides; a seat; a backrest; at least one ottoman; a reclining mechanism, a lift mechanism and a power unit. The reclining mechanism interconnects the frame, the seat, the backrest, and the at least one ottoman, and comprises a series of pivotally interconnected links and configured to move the seating unit between (a) an upright position, in which the backrest is generally upright and defines a first backrest angle relative to horizontal, the seat is generally horizontal, and the at least one ottoman is retracted below the seat, (b) a TV position, in which the backrest substantially maintains the first backrest angle, and the at least one ottoman is extended in front of the seat, and a fully reclined position, in the at least one ottoman remains extended on front of the seat, and the backrest defines a second backrest angle relative to horizontal that is shallower than the first backrest angle. The lift mechanism interconnects the base and the frame and is configured to move the seating unit between the upright position and a lift position, in which both the frame and the seat are raised and tilted forward from their respective positions in the upright position, and the backrest defines a third backrest angle relative to horizontal that is greater than the first backrest angle. The power unit is interconnected with the reclining mechanism and the lift mechanism and is configured to move the seating unit between the lift, upright, TV and fully reclined positions. A lowermost portion of the backrest moves substantially directly vertically when moving from the upright position to the lift position. In such a configuration, the arrangement of the backrest and / or seat can provide the occupant with a more secure sensation as the chair lifts; it does not produce a sensation of the occupant being “thrown” from the chair, as can be the case with other lift chairs.

The invention discloses an automatic lifting chair comprising a backrest, a cushion, armrests and a base, wherein the backrest is connected with the cushion and is arranged on the back side of the cushion, the armrests are arranged on the left and the right sides of the cushion, an lifting button and a descending button are arranged on one armrest at one side, the bottom surface of the cushion is connected with one end of a supporting rod, and a lifting cylinder is connected with the other end of the supporting rod, a sleeve is arranged in the lifting cylinder, a screw rod of a motor is sleeved by the sleeve, a screw thread is arranged in the sleeve and corresponds to the screw rod, the outer side of the sleeve is provided with a shaft sleeve, the motor is fixed on the base, the automatic lifting chair solves the problem that in the prior art the safety of a pneumatic lifting chair is not high, the automatic lifting chair design accords with human body engineering, the automatic lifting chair not only can provide a better and more comfortable service for a user and is high in safety, and the automatic lifting chair absolutely may not explode due to improper use or excessively-long chair service life in a use process, and has the advantages of simple operation, safety and energy saving.

The invention relates to the field of wheelchairs, particularly a wheelchair with a liftable chair surface, which is composed of a bottom frame for traveling, a chair surface for a person to sit on and lean against, and a lifting mechanism for lifting the chair surface, wherein the lifting mechanism is installed between the frame and the chair surface; and the lifting mechanism comprises a cross type lifter and a telescopic hydraulic cylinder which are hinged at the middle part. The height of the chair surface can be adjusted according to the height of a person, so that every person can use the wheelchair comfortably.

The invention relates to a control device of a stair lifting chair, wherein the control device is used for controlling the stair lifting chair to move along stairs. The control device of the stair lifting chair comprises a driving motor, a master control board and a control system; the driving motor rotates forwardly or reversely to drive the stair lifting chair to move upwards or downwards along the stairs; the master control board outputs a drive signal to drive the driving motor to rotate; the control system is connected with the master control board and outputs a control signal to the master control board; and when the master control board receives the control signal sent out by the control system, the master control board sends out a corresponding drive signal to control the driving motor to rotate. The control device disclosed by the invention can be used for controlling the stair lifting chair to move up and down along the stairs and guaranteeing the safety of a user and is simple and convenient to operate.

A power lift-recliner chair has a base, seat and backrest sections and actuator for moving the seat and backrest sections. The seat is pivotally mounted with respect to the base section and the backrest section is pivotally mounted with respect to the seat section. A guide is associated with one of the base and the seat sections and at least one follower is associated with the other of the base and the seat sections. The guide is arcuate for relative pivoting with respect to the base about a pivot axis located at the centre of curvature of the guide. The base section includes a pair of side panels on lateral sides of the chair. The seat includes a pair of side members, adjacent the side panels, which carry the guide or follower associated with the seat section.

A medical emergency portable lift chair assembly adapted to be tiltably wheeled through a doorway and to safely, slowly lift a person off of the ground. It may be powered through a supplied DC battery or through an AC power source. The unit is capable of lifting several hundred pounds up to a safe seating height. It utilizes a high torque linear actuator mounted onto a base frame that raises or lowers a ram coupled to a moveable platform by a pair of redundant pulley arrangements. The base frame sits directly on the floor when the chair assembly is not being wheeled to provide support for the load to be raised. The moveable platform descends to the floor within the framework of the base frame and has a thin graspable chair affixed thereto that resides approximately no more than ¾″ off the floor. A person who has fallen and cant get up may bring themselves in proximity to the chair either frontwards or rearwards, scoot themselves partially on the chair or grasp the chair, and then their weight can be safely raised off of the ground.

An information display device adapted to be mounted on the safety bar of a ski-lift chair. The device has a tubular base which is rigidly attached to the safety bar. A tubular carrier is rotatabley secured to the tubular base. This tubular carrier provides a cylindrical support surface for information to be displayed. A tubular cover is mounted about the carrier and fixed to the tubular base to protect the tubular carrier and the information attached to it.

A lift chair is provided which includes a frame having four legs and a back rest portion. A seat has a front portion pivotally attached to the frame and has a rear portion which can be lifted upwardly. The seat movable from a first generally horizontal sitting position to a second angled lift position where the rear portion of said seat is lifted upwardly. Arm rests members are movably attached to opposite sides of the frame. Each arm rest member has a generally horizontal arm rest portion and a vertical activating rod member. The arm rests are movable from a first upper vertical position to a second lower vertical position. A rope and pulley system is provided which includes a pulley attached to a lower end of each activating rod and additional pulleys are attached to the frame. A rope is attached to the rear portion of the seat and extends around the pulleys. When a user pushes downwardly on the arm rests, the arm rests together with the rope and pulleys cause the rear portion of said seat to be lifted upwardly thus helping the user to stand up and get out of the chair.

A diagnostic system for use in the electronic control circuit for motor actuated lift and / or recline mechanisms for chair wherein a hand controller is used to operate said lift and / or recline mechanisms, and wherein a series of LED indicators are situated at strategic locations in the circuit. The LED indicators can be used to determine whether electricity is flowing to such points in the circuit, which in turn will enable possible problems that might cause the hand control device not to work properly to be quickly more easily pinpointed by immediately narrowing the potential sources or causes of the problem.

The invention provides a spatial sound locating test system. The spatial sound locating test system comprises a front sounder, a rear sounder, a left sounder, a right sounder, an upper sounder and a lower sounder. The sounders are all disposed on a virtual sphere. A height-adjustable lift chair is disposed in the virtual sphere. When a testee sits in the lift chair, the head of the testee is located right at the center of the virtual sphere. An answer-back unit for the testee to operate is arranged near the lift chair. Both the sounders and the answer-back unit are connected with a controller. The spatial sound positioning test system can be used to select people having high hearing ability by testing the testee's ability of spatial sound locating, and provides objective and accurate basis for the selection of military and local exceptional talents.

The present invention relates to a seat for a chair-lift installation composed of a seating part (1) and a back (2) and further including a support arch (3) intended to be connected to a carrier cable, a safety bar (4) mounted to tilt with respect to the seat between a lowered position and a raised position and provided with a horizontal bar (5). According to the invention, the seat includes, at least one of the side flanks a tilting device (8) arranged so that the horizontal bar (5) of the safety bar (4) makes, in a side plane, a non circular motion facilitating the passage from the lowered position to the raised position and vice versa.

The invention relates to a device for ultrasonic inspection. The device comprises a lifting chair, a lifting rod, a mechanical arm and a controller. The lifting chair comprises a base, a fixing-side supporting frame, a driving mechanism, a lifting frame and a supporting plate. Guiding grooves are formed in the lower surface of the supporting plate, and guiding sliding blocks are arranged at the top ends of supporting rods on most-top layers of two shearing assemblies, and are assembled in the guiding grooves; the lifting rod comprises a second supporting base, a second lead screw and a second servo motor, a guiding sleeve is arranged outside the second lead screw, a lifting sleeve is arranged outside the guiding sleeve, and the mechanical arm is arranged on the lifting sleeve; the mechanical arm comprises a first joint, a second joint, a third joint, a supporting ring and a clamping piece, a first servo motor and the second servo motor are electrically connected with the controller, and a lifting-chair control switch and a lifting-rod control switch are arranged on the controller. The device has the advantages that the structure is simple, the standing height of patients is automatically adjusted, a probe can be supported, and the labor intensity of medical workers can be effectively reduced.

The invention discloses a linkage-type lifting chair. The linkage-type lifting chair comprises footrest mechanisms, a T-shaped seat plate, a seat plate lifting mechanism, a backrest mechanism, a seat frame and a telescopic pushing rod, wherein the footrest mechanisms are bilaterally symmetric and are connected with the left end of a transverse section of the T-shaped seat plate; the lower end part of a vertical section of the T-shaped seat plate is connected with the seat plate lifting mechanism; the right end of the transverse section of the T-shaped seat plate is connected with the backrest mechanism; the backrest mechanism is connected with the footrest mechanisms through straight linkage rods; the bottom of the telescopic pushing rod is hinged to a transverse shaft on the seat frame; the front end of the telescopic pushing rod is hinged to a middle transverse beam; the left and right ends of the middle transverse beam are fixedly connected with the middle of a driving component respectively; a spring is connected between the middle of a first connecting rod and the T-shaped seat plate; the middle of a first seat plate support is hinged to a first lifting connecting rod; the upper part of the first seat plate support is hinged to the right end of the driving component; the lifting mechanism is connected with a second seat plate support. The linkage-type lifting chair is simple in structure, convenient to operate and lower in cost, and has rich functions.