Longitudinally split, motor operated butterfly bed

• US 5,224,228 A
• Filed: 06/17/1992
• Issued: 07/06/1993
• Est. Priority Date: 06/17/1992
• Status: Expired due to Fees

• Current Assignee: James R. Larrimore
• Original Assignee: James R. Larrimore
• Inventors: Larrimore, James R.
• Primary Examiner(s): Grosz, Alexander
• Application Number:
  US07/899,692
• Time in Patent Office: 384 Days
• Field of Search: 5/613, 5/607, 5/614, 5/616, 5/600, 5/927, 5/465, 5/424
• US Class Current: 5/613
• CPC Class Codes: A61G 7/001 with means for turning-over the patient
• CPC Class Codes: A61G 7/008 tiltable around longitudinal axis, e.g. for rolling
• CPC Class Codes: Y10S 5/927 Sofa beds with motor means
• CPC Class Codes: Y10S 5/942 Longitudinally divided top surface with pivotable section

Abstract

An adjustable bed is provided with two frames which rotate about the longitudinal axis of the bed. The rotation is facilitated by a plurality of motors mounted on an undercarriage in which the two frames nest. The motors are controlled by a control unit, which when actuated causes raising or lowering of the nested frames relative to the undercarriage. One or both frames may be raised or lowered at the same time. A limit switch is placed on the frames which prevents the angle formed by the two frames from becoming less than ninety degrees.

Claims

1. An adjustable bed having a longitudinal and transverse axis comprising:

an undercarriage;

two pivot support plates connected to said undercarriage;

a first and a second frame nested in said undercarriage;

pivot means connecting said first frame to said second frame and further to said support plates;

said pivot means defining a longitudinal axis;

a plurality of first and second frame support elements connected to said first frame and said second frame, respectively;

a first and second frame rotation means located at said transverse axis connected to one of said first frame support elements and one of said second frame support elements, respectively;

rotational control means connected to said first and second frame rotation means, respectively; and

said rotational control means comprising a limit switch mounted on one of said first and second frames, whereby an angle formed between said first and second frames is constrained to be at least ninety degrees and whereby said first and second frames are rotatable about said bed longitudinal axis relative to each other when said rotational control means is not actuated.

2. An adjustable bed as claimed in claim 1 where said first and second frame each have a top, bottom, inside and outside frame member.

3. An adjustable bed as claimed in claim 1 where said pivot means comprises a pin whereby said first and second frame are rotatable about said pin.

4. An adjustable bed as claimed in claim 1 where said frame rotation means includes a plurality of motors.

5. An adjustable bed as claimed in claim 4 where said frame rotation means further includes a plurality of extensible and retractable screw members respectively attached to said motors and further respectively connected to a plurality of linkages, said linkages are connected to said one of said frame support elements whereby when said motors are actuated, said screw member either extends or retracts, causing said frame member to rotate about said longitudinal axis.

6. An adjustable bed as claimed in claim 4 including a mesh net connected to said first and second frame respectively, and further connected to said undercarriage whereby said mesh net prevents foreign objects from fouling said motors.

7. An adjustable bed as claimed in claim 1 including a mattress, said mattress designed to lay atop said first and second frame, said mattress having a longitudinal parabolic cut parallel to said longitudinal axis, whereby said mattress can rotate along with said first or said second frame.

8. An adjustable bed as claimed in claim 1 whereby said undercarriage has four mounting posts each having a roller, whereby said posts elevate said undercarriage off a supporting surface.