Portable orthopedic bed

• US 4,361,917 A
• Filed: 04/03/1980
• Issued: 12/07/1982
• Est. Priority Date: 04/03/1980
• Status: Expired due to Term

• Current Assignee: Harold L. Wilson
• Original Assignee: Harold L. Wilson
• Inventors: Wilson, Harold L.
• Primary Examiner(s): Grosz, Alexander
• Application Number:
  US06/136,803
• Time in Patent Office: 978 Days
• Field of Search: 5/66-68, 5/69
• US Class Current: 5/616
• CPC Class Codes: A47C 20/041 by electric motors
• CPC Class Codes: A47C 20/08 with means for adjusting two or more rests simultaneously
• CPC Class Codes: A61G 7/015 divided into different adjustable sections, e.g. for Gatch position

Abstract

A portable orthopedic bed which is formed as a super structure for conventional existing beds and may be switched from one such bed to another. The portable orthopedic bed is comprised of a flat semi-rigid planar base which supports an adjustable frame which may be raised and lowered in the fashion of an adjustable hospital bed. The frame is provided with wheeled supports for adjusting the tilt or inclination of a back rest portion and a leg portion by means of separate motors and worm gears. Appropriate controls are provided to activate the motors for raising and lowering the back and leg portions of the frame. The portable orthopedic bed through its rigid planar support may be lifted and placed upon a box spring or other frame of a conventional bed with the mattress being removed. After the portable bed frame is placed on the conventional bed the mattress may be placed over the orthopedic bed frame. The patient or other user may then use the bed in a conventional fashion for adjusting the back or leg portions as desired.

Through the rigid planar support the portable orthopedic bed may be placed upon the bed frame or its super structure such as a coiled box spring without obtrusion, snagging or the like and may be moved from one conventional bed to another, or even as desired placed upon the floor or any other flat support base.

Claims

1. A portable orthopedic bed comprising a flat base, a frame-like back rest, an intermediate body rest and a leg rest, said back rest being pivotably supported at one end above said base toward said body rest and said leg rest being pivotably supported at one end toward said body rest, said aforementioned rests being supported upon said flat base and separate motor means supported upon said flat base for pivoting said back rest and leg rest to inclined positions of adjustment, said flat base being of rigid construction and supporting the remaining portion of the bed in super-imposed position in order that said flat base may rest on a flat support, said leg rest being comprised of upper and lower leg rest members pivotally connected together and said lower leg rest member having means connecting it to roller elements by axle means and motor means provided for moving said axle means longitudinally of said base to raise and lower said back rest and a lower end of said lower leg rest being directly connected to said roller elements.

2. The bed of claim 1, in which rotary worm gear means are connected to each of said motor means and a threaded block means receives said worm gear means and is connected to each of said axle means whereby the rotary movement of said worm gear means causes said axle means and roller elements to move longitudinally with respect to said bed.

3. A portable orthopedic bed comprising a flat base, a frame-like back rest, an intermediate body rest and a leg rest, said back rest being pivotably supported at one end above said base toward said body rest and said leg rest being pivotably supported at one end toward said body rest, said aforementioned rests being supported upon said flat base for pivoting said back rest and leg rest to inclined positions of adjustment, said flat base being of rigid construction and supporting the remaining portion of the bed in super-imposed position in order that said flat base may rest on a flat support, said leg rest being comprised of upper and lower leg rest members pivotally connected together and said lower leg rest member having means connecting it to roller elements by axle means and motor means provided for moving said axle means longitudinally of said base to raise and lower said back rest, said lower leg rest member being pivotally connected by a link member to a fixed pivot means on said base and a power link pivotally connected to said axle means at one end and additionally pivoted to said link member at an intermediate portion thereof.

4. The bed of claim 3, in which said power link has a free end adapted to bear against the underside of said upper leg rest to assist in the raising and lowering thereof.

5. The bed of claim 4, in which the free end of said power link is moved out of contact with said upper leg rest as said power link is moved toward a vertical thrust relation with said link member.