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. 04, 2000
Filed:
May. 08, 1998
William S Stumpf, Waterloo, CA;
Northfield Metal Products Ltd., Waterloo, CA;
Abstract
A chair height adjustment mechanism which can be retrofit to a chair comprises a rod with a circumferential notch proximate one end for insertion through openings in the chair seat support bracket above a valve opening member of the chair height adjustment cylinder such that the rod is free to tilt against the valve opening member. The circumferential notch receives the looped end of the inner wire of a co-axial cable. The sheath of the cable is supported by a flange of a support member. The support member has an opening which receives the adjustment cylinder and a wheel which redirects the inner wire from the rod toward the flange. The other end of the co-axial cable terminates in a user actuator which may be mounted to the underside of the chair seat.