초록 ▼

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

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.

대표청구항 ▼

1. A self-recovery device for lifting a fallen human from the ground comprisingA frame comprising upright opposing lift frame sides spaced apart by bottom and top horizontal cross members and having rotatable wheels disposed to support the frame, a lift trolley comprising a plurality of vertical con

1. A self-recovery device for lifting a fallen human from the ground comprisingA frame comprising upright opposing lift frame sides spaced apart by bottom and top horizontal cross members and having rotatable wheels disposed to support the frame, a lift trolley comprising a plurality of vertical control tracks attached to said bottom and top horizontal cross members, a threaded drive rod that is also attached between said bottom and top horizontal cross members, a drive receiver threaded over the threaded drive rod, a plurality of horizontal struts attached on horizontal strut first ends to the drive receiver, vertical support plates attached on horizontal strut second ends rollers mounted on said vertical support plates disposed to ride in said tracks therein constraining vertical movement of the drive receiver on the threaded drive rod, a seat attached to said lift trolley, motion of which is controlled by said rollers in said tracks. 2. A mobile self-recovery device as declared in claim 1, further comprising a motor rotatably driving said threaded drive rod causing said drive receiver to move vertically on the threaded drive rod as the threaded drive rod rotates.3. A wheeled lift chair comprisinga wheeled frame, a vertically moving lift trolley on said frame, a seat supported by said lift trolley, a seat arm, a lift arm adapted as a hinge pin with the seat and the seat arm hinged together around the lift arm such that the seat arm is rotatable on the lift arm between a vertical position and a horizontal position therein adaptable as a sliding board in transferring someone laterally onto the seat. 4. A wheeled lift chair comprising,a lift frame, rearward wheels rotatably mounted on lift frame sides, frame legs extending forward from the lift frame, forward wheels rotatably mounted on frame legs, a lift trolley mounted to the lift frame movable vertically on the frame, a seat mounted to and suspended from the lift trolley forward of the lift frame and the lift trolley, the seat being height-adjustable on the lift trolley relative to the lift frame and an underlying floor between a first position with the seat in contact with the floor and a raised seating position. 5. A wheeled lift chair comprising,a lift frame, rearward wheels rotatably mounted on lift frame sides, frame legs extending forward from the lift frame forward wheels rotatably mounted on frame legs, a lift trolley mounted to the lift frame movable vertically on the frame comprising a plurality of vertical stabilizer rods attached between said bottom and top horizontal cross members, a threaded drive rod that is also attached between said bottom and top horizontal cross members, a drive receiver threaded over the threaded drive rod, a plurality of horizontal struts attached on horizontal strut first ends to the drive receiver, a vertical support member attached on a second end of each horizontal strut, guides mounted on said vertical support members disposed to slidably engage said stabilizer rods therein constraining vertical movement of the drive receiver on the threaded drive rod, a seat mounted to and suspended from the lift trolley forward of the lift frame and the lift trolley. 6. The wheeled lift chair of claim 5 wherein the vertical stabilizer rods comprise tracks with longitudinal grooves and the guides comprise rollers rolling in said grooves.7. The wheeled lift chair of claim 5 whereinleft and right top horizontal struts attach between drive receiver left and right sides and guides on left and right vertical support members, respectively, and said vertical support member comprises a vertical strut forward of the stabilizing rod and at least one forward strut extending between a guide on the stabilizing rod and the vertical strut. 8. The wheeled lift chair of claim 7 further comprisingupper and lower vertically aligned guides slidably on each of left and right vertical stabilizer rods, said left and right top horizontal struts attached to said lower guides, upper and lower forward struts between upper and lower guides on each of left and right vertical stabilizer rods, respectively. 9. The wheeled lift chair of claim 8 further comprising a bottom horizontal strut between lower guides further stabilizing said seat in vertical adjustment.10. The wheeled lift chair of claim 8 further comprisinga pair of lift arms supporting said seat, extending forward substantially horizontally from the said vertical struts respectively, and wherein the frame encloses the lift trolley with closed frame sides spaced apart by closed bottom and top horizontal cross members, a closed back on the frame sides and cross members, and a front covering on the frame sides and cross members having front covering slots through which said forward struts extend from the lift trolley inside the frame to said vertical struts outside the frame to which the lift arms are attached, the frame thus substantially closing the lift trolley. 11. The wheeled lift chair of claim 5 wherein left and right top horizontal struts attach between drive receiver left and right sides and guides on left and right vertical support members, respectively, and said vertical support members comprise right and left vertically dependent plates each respectively opposing frame sides and extending forward from the lift trolley.12. The wheeled lift chair of claim 10 wherein the frame encloses the lift trolley with closed frame sides spaced apart by closed bottom and top horizontal cross members, a closed back on the frame sides and cross members, and a front covering on the frame sides and cross members having front covering slots through which said vertically dependent plates extend from the lift trolley inside the frame to the seat outside the frame, the frame thus substantially closing the lift trolley.13. The wheeled lift chair of claim 10 further comprising a vertical upper truss attached between the right and left vertically dependent plates.14. The wheeled lift chair of claim 11 further comprisinga pair of lift arms supporting said seat, extending forward substantially horizontally from the vertical support member, and a horizontal lower truss extending forward from the vertical truss between the horizontal lift arms as a brace and further seat support. 15. The wheeled lift chair of claim 5 further comprising a pair of lift arms supporting said seat, extending forward substantially horizontally from the vertical support member.16. The wheeled lift chair of claim 5 further comprising said lift arms horizontally aligned.17. The wheeled lift chair of claim 5 including a braking mechanism comprising,a seat arm on each seat side, brake handles on each seat arm, said rear wheel including a hub on each frame side and brake retention slots in the hub, a brake adjustably attached to rear wheel hubs, the brakes and brake handles each joined by a tensioning wire located slidably within a brake cable, a brake release pin held in one of a plurality of brake pin retention slots by a spring and a retaining clip that are connected to the pin such that when the release pin, which is normally centered in the brake retention slots in the hub of the rear wheel, is withdrawn from the brake retention slots as tensioning wire is pulled through cable by the actuation of the brake handle, thus releasing the brakes and allowing the lift chair to be moved. 18. A wheeled lift chair comprisinga frame, rearward wheels rotatably mounted on lift frame sides, frame legs extending forward from the lift frame forward wheels rotatably mounted on frame legs, a lift trolley mounted to the lift frame movable vertically on the frame, a seat mounted to and suspended from the lift trolley forward of the lift frame and the lift trolley, wherein the frame encloses the lift trolley with closed frame sides spaced apart by closed bottom and top horizontal cross members, a closed back on the frame sides and cross members, and a front covering on the frame sides and cross members having front covering slots through which connection members extend from the lift trolley inside the frame to the seat outside the frame, the frame thus substantially closing the lift trolley. 19. A wheeled lift chair comprisinga frame, rearward wheels rotatably mounted on lift frame sides, frame legs extending forward from the lift frame forward wheels rotatably mounted on frame legs, a lift trolley mounted to the lift frame movable vertically on the frame comprising a plurality of vertical stabilizer rods attached between bottom and top horizontal cross members, a threaded drive rod that is also attached between said bottom and top horizontal cross members, a drive receiver threaded over the threaded drive rod, a plurality of horizontal struts attached to the drive receiver on horizontal strut first ends, guides on horizontal strut second ends disposed to slidably engage said stabilizer rods therein constraining vertical movement of the drive receiver on the threaded drive rod.