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:
Aug. 05, 1986
Filed:
Sep. 24, 1984
Felix Stucki, Thunstetten, CH;
Girsberger Aktiengesellschaft, Butzberg, CH;
Abstract
A chair has an adjustable seat or back rest which is connected with an air spring. The air spring has an engaged condition in which the seat or back rest is locked, and a disengaged condition in which the seat or back rest may be adjusted as desired. A pivotable handle located beneath the seat permits a user to change the condition of the air spring. The handle is connected with a first shaft which carries a first coupling element. A second shaft carries a cooperating second coupling element and acts on an actuating rod of the air spring to change the condition of the latter in response to manipulation of the handle. The shafts are relatively rotatable, and the coupling elements define a gap permitting rotation of one coupling element relative to the other through a distance equalling the length of the working stroke of the actuating rod. In the engaged condition of the air spring, each coupling element is held in a respective end position by a biasing force. The handle is in a lower terminal position. Upward pivoting of the handle to an upper terminal position causes the first shaft and its coupling element to rotate through a distance equal to the length of the working stroke of the actuating rod.