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:
Apr. 29, 1980
Filed:
Jul. 20, 1978
Applicant:
Inventor:
Egon Brauning, Weil am Rhein, DE;
Assignee:
Protoned B.V., Amsterdam, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A47C / ;
U.S. Cl.
CPC ...
297300 ; 297304 ; 297355 ; 297316 ; 248619 ;
Abstract
A lockable gas cylinder in parallel with a mechanical spring controls the adjustment of tilt in a chair seat and back. A linkage mechanism permits tilting of the chair seat about a pivot located close to the forward edge of the seat and permits tilting of the back about a pivot which is located near the rear edge of the seat. The gas cylinder may be released to permit rocking of the chair against the force of the mechanical spring alone.
Brauning, Egon. (1980). Adjustable chair (U.S. Patent No. 4200332). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4200332
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile