The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 01, 1981
Filed:
Dec. 21, 1979
Applicant:
Inventor:
Minoru Ikeda, Kokubunji, JP;
Assignee:
France Bed Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A47C / ;
U.S. Cl.
CPC ...
5424 ; 5474 ; 5475 ; 5420 ;
Abstract
A mattress includes a pair of ridges made of elastomeric material and disposed respectively on both sides of an elastomeric layer which is laid on the top of a spring unit and covered with an outer covering, the ridges protruding from the elastomeric layer. Each ridge partially or fully extends in the longitudinal direction of the elastomeric layer. A user lying on the mattress is prevented from falling from the mattress by the ridges.