MATTRESS FOR INVALIDS

• US 3,742,528 A
• Filed: 02/15/1972
• Issued: 07/03/1973
• Est. Priority Date: 05/05/1970
• Status: Expired due to Term

• Current Assignee: Josef Munch
• Original Assignee: Josef Munch
• Inventors: Munch, Josef
• Primary Examiner(s): Nunberg, Casmir A.
• Application Number:
  US05/226,605
• Time in Patent Office: 504 Days
• Field of Search: 5/91,345,352,357
• US Class Current: 5/723
• CPC Class Codes: A47C 27/148 of different resilience
• CPC Class Codes: A47C 27/15 consisting of two or more layers A47C27/16 takes precedence
• CPC Class Codes: A47C 27/20 with springs moulded in, or situated in cavities or openings in foamed material
• CPC Class Codes: A61G 7/05715 with modular blocks, or inserts, with layers of different material

Abstract

A frame of foam polymer with a rectangular cutout, positioned to underlie the major part of the body of a patient recumbent thereon, is cemented onto a base plate serving as a support for a multiplicity of square or rectangular inserts of like foam material detachably secured to the base plate with the aid of mating pegs and holes so as to be removable at locations proximal to a pressure-sensitive part of the patient'"'"''"'"'s body. A transverse pad at the foot end of the mattress has vertical recess open toward the head end to receive the feet of the patient whose legs rest on anatomically shaped wedge pieces which extend into these recesses but terminate short of their closed ends to leave room for the unsupported heels of the patient.

Claims

1. A mattress comprising a generally rectangular base plate, a horizontal frame of resilient material fixedly secured to said base plate and substantially coextensive therewith, said frame being provided with a central output positioned to underlie the major part of the body of a patient recumbent thereon, and a multiplicity of resilient inserts with smooth upper surfaces closely juxtaposed in said cutout to form a continuous surface with said frame, each of said inserts being provided on its underside with a plurality of depending pegs, said base plate being provided with a multiplicity of complementary holes receiving said pegs for enabling selective removal of any insert from said frame to relieve pressure on a sensitive part of the patient'"'"''"'"'s body.

2. A mattress as defined in claim 1 wherein said holes are uniformly distributed throughout said cutout in an orthogonal array, each of said inserts being provided with a plurality of correspondingly equispaced pegs.

3. A mattress as defined in claim 2 wherein said inserts are rectangular and differ at least partly from one another in size and in the number of said pegs.