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. 03, 1991
Filed:
Oct. 31, 1989
Applicant:
Inventor:
Masaaki Yokota, Akishima, JP;
Assignee:
Tachi-S Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A47C / ;
U.S. Cl.
CPC ...
297452 ; 297284 ;
Abstract
A seat back structure of an automotive seat comprising a back support plate, plural springs, and torsion bar. The back support plate is supported in a seat back frame by the springs and torsion bar in a more positively resilient way. The provision of the torsion bar avoids the sudden backward movement of the back support plate which has been found in a conventional seat back structure wherein the support plate is only supported by springs.