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:
Oct. 25, 1983
Filed:
Jul. 17, 1980
Applicant:
Inventors:
Fritz Drabert, Minden, DE;
Oskar Posch, Biberist, CH;
Hans-Joachim Edel, Minden, DE;
Bernhard Schroeder, Porta Westfalica, DE;
Assignee:
Drabert Sohne, Minden, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A47C / ;
U.S. Cl.
CPC ...
297300 ; 297321 ; 297322 ;
Abstract
A chair having a base, a seat, a backrest and a spring between the seat and the backrest. A first pair of links is pivotably connected to the seat and the backrest respectively and a second pair of links is pivotably connected to the seat and the base respectively, one pair forming an angle lever connected to the seat. One end of the spring is adjustably supported either by a nut and spindle and a bar between the angle lever and the spring or by a slide in the form of a nut on a threaded spindle and a guide slidably receiving the slide and arranged in the angle lever.