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. 14, 1993
Filed:
Aug. 28, 1991
Gary L Kruse, Spring Lake, MI (US);
James A VanDoorne, Grand Haven, MI (US);
Oliver Products Company, Grand Rapids, MI (US);
Abstract
A variable height table support assembly having a telescopic pillar between a lower base and an upper tabletop support platform, the pillar having an inner cylindrical member and an outer cylindrical member, cooperable with a detent biasing and locking apparatus. The detent is lockable through an opening in the outer cylindrical member and into one of more than one cavities in the inner cylindrical member, by a threaded, adjustable plunger It is also biased toward this opening and a cavity by a stabilizing spring when the plunger is backed off to unlock the detent. Preferably a gas cylinder extends through the pillar to assist elevation of the tabletop support, and cushion lowering thereof.