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:
Mar. 22, 1988
Filed:
Nov. 07, 1985
Applicant:
Inventors:
Assignee:
Ortopedia GmbH, Kiel, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A47C / ;
U.S. Cl.
CPC ...
297452 ; 297457 ; 297D / ;
Abstract
The present invention relates to a seat structure for collapsible (foldable) invalid chairs provided with a flexible seat and/or back covering, comprising an upholstery material (3) and a covering material (4) at least partially enclosing said upholstery material. The covering material (4) is provided with ultrafine perforations, and an open-pore foam material shaped as a molded part is used for the upholstery material.