Adjustable bed

• US 4,494,259 A
• Filed: 11/25/1981
• Issued: 01/22/1985
• Est. Priority Date: 11/25/1981
• Status: Expired due to Fees

• Current Assignee: Bloomcraft Incorporated, Century Curtain Company Incorporated, Omni Manufacturing, Inc.
• Original Assignee: Simmons Universal Corporation
• Inventors: Miller, Robert E., Sonder, Richard, Soni, Abraham H., Russo, Joseph L.
• Primary Examiner(s): Grosz, Alexander
• Assistant Examiner(s): TRETTEL, MICHAEL
• Application Number:
  US06/325,048
• Time in Patent Office: 1,154 Days
• Field of Search: 5/60-69
• US Class Current: 5/616
• CPC Class Codes: A47C 19/045 with entire frame height or inclination adjustments
• 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 7/005 tiltable around transverse horizontal axis, e.g. for Trendelenburg position rocking beds for physical therapy A61H1/003; hanging patient inclined downwardly for drawing him out A61H2203/0493
• CPC Class Codes: A61G 7/012 raising or lowering of the whole mattress frame A61G7/005, A61G7/008 take precedence
• CPC Class Codes: A61G 7/015 divided into different adjustable sections, e.g. for Gatch position

Abstract

An adjustable bed having mattress supporting portions for supporting a mattress for an occupant and in a variety of positions, a base frame for supporting the mattress supporting portions, and position controlling mechanism operatively interconnecting the mattress supporting portions and the base frame. The position controlling mechanism comprises an upper frame operatively connected with the mattress supporting portions for moving the portions relative to one another, lifting arms operatively connecting the upper frame and the base frame, and a plurality of drive motors operatively connected with the upper frame and with the lifting arms for moving the upper frame and the lifting arms and thereby positioning the mattress supporting portions in the desired positions. The operation of the position controlling mechanism is such that the portions of the bed may be moved both vertically and angularly through raised and lowered horizontal positions, Trendelenburg and reverse Trendelenburg positions, headlift and seated positions. Movement to and from headlift positions is accomplished with coordinated translation of the mattress supporting portions so as to move the head of an occupant essentially directly vertically rather than arcuately. A foot drop position approximating vertical is available so as to accommodate seated positioning of an occupant.

Claims

1. In an adjustable bed having

mattress supporting portions for supporting a mattress for an occupant in a variety of positions and including a head portion at a head end of the bed, a foot portion at a foot end of the bed, and a thigh portion between the head and foot portions,

base frame means for supporting the mattress supporting portions, and

position controlling mechanism operatively interconnecting the mattress supporting portions and the base frame means,

an improvement in said position controlling mechanism which facilitates movement of the bed into a variety of positions and comprising:

upper frame means having a head end and a foot end and operatively connected with said mattress supporting portions for moving said portions relative to said base frame means and one another and comprising lifting frame means operatively connected with said lifting arm means for movement vertically relative to said base frame means, and moving frame means mounted on said lifting frame means for movement longitudinally relative thereto,

lifting arm means operatively connecting said upper frame means and said base frame means for moving said head and foot ends of said upper frame means vertically relative to said base frame means and thereby for moving said mattress supporting positions, and

motor means operatively connected with said upper frame means and with said lifting arm means for moving said upper frame means and said lifting arm means and thereby for positioning said mattress supporting portions in a desired position, said motor means comprising a foot drop motor mounted on said moving frame means for movement therewith and operatively connected with said foot portion of said mattress supporting portions for pivoting said foot portion relative to said thigh portion.

2. An adjustable bed according claim 1 wherein said lifting arm means comprises a pair of head end lifting arms and a pair of foot end lifting arms, and further wherein said motor means comprises a bed height motor mounted on said base frame means and selectively operatively connected with said lifting arms for moving lower ends of said pairs of lifting arms toward and away from one another and for moving said foot end lifting arms independently of said head end lifting arms so as to raise and lower said upper frame means and to pivot said upper frame means relative to a horizontal plane.

3. In an adjustable bed having

mattress supporting portions for supporting a mattress for an occupant in a variety of positions and including a head portion at a head end of the bed, a foot portion at a foot end of the bed, and a thigh portion between the head and foot portions,

base frame means for supporting the mattress supporting portions, and

position controlling mechanism operatively interconnecting the mattress supporting portions and the base frame means,

an improvement in said position controlling mechanism which facilitates movement of the bed into a variety of positions and comprising:

upper frame means having a head end and a foot end and operatively connected with said mattress supporting portions for moving said portions relative to said base frame means and one another, said upper frame means comprising lifting frame means mounted for movement vertically relative to said base frame means and fixed against movement longitudinally relative to said base frame means and further comprising moving frame means mounted on said lifting frame means for translation therealong longitudinally relative to said base frame means and said lifting frame means,

lifting arm means comprising a pair of head end lifting arms and a pair of foot end lifting arms operatively connecting said upper frame means and said base frame means for moving said head and foot ends of said upper frame means vertically relative to said base frame means and thereby for moving said mattress supporting portions,

head lift motor means mounted on said lifting frame means and operatively connected with said mattress supporting portions for simultaneously moving said mattress supporting portions lengthwise of said lifting frame means and pivoting said head portion upwardly for lifting the head of an occupant of the bed, and

foot drop motor means mounted on said moving frame means for movement therewith and operatively connected with said foot portion of said mattress supporting portions for pivoting said foot portion relative to said thigh portion.

4. An adjustable bed comprising

a base frame,

upper frame means having a head end and a foot end and including lifting frame means mounted for movement vertically relative to said base frame means and fixed against movement longitudinally relative to said base frame means, and further including moving frame means mounted on said lifting frame means for translation therealong longitudinally relative to said base frame means and said lifting frame means,

mattress supporting means mounted on said upper frame means for supporting a mattress for an occupant in a variety of positions and including a head portion at a head end of the bed, a foot portion at a foot end of the bed, and a thigh portion between the head and foot portions,

lifting arm means including a pair of head end lifting arms and a pair of foot end lifting arms with each pair operatively connecting said lifting frame means and said base frame means for moving said head and foot ends of said upper frame means vertically relative to said base frame means and thereby for moving said mattress supporting portions,

bed height motor means mounted on said base frame means and selectively operatively connected with said lifting arms for moving said pairs of lifting arms toward and away from one another and for moving said foot end lifting arms independently of said head end lifting arms so as to raise and lower said upper frame means and to pivot said upper frame means relative to a horizontal plane,

head lift motor means mounted on said lifting frame means and operatively connected with said mattress supporting portions for simultaneously moving said mattress supporting portions lengthwise of said lifting frame means and pivoting said head portion upwardly for lifting the head of an occupant of the bed, and

foot drop motor means mounted on said sliding frame means for movement therewith and operatively connected with said foot portion of said mattress supporting portions for pivoting said foot portion relative to said thigh portion.