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:
Mar. 08, 1991
Geoffrey A Hollington, London, GB;
Lynne M Allen, Holland, MI (US);
Robert A Nagelkirk, Zeeland, MI (US);
Mark E Kuyper, Holland, MI (US);
Herman Miller, Inc., Zeeland, MI (US);
Abstract
A chair having a base, a seat support member, a seat, and a height adjustable mechanism is disclosed. The height adjustable mechanism includes a vertically extendable and compressible gas spring having a pin located at the upper end of the spring. The pin operates a valve integrated in the gas spring so that the effective length of the spring is adjustable when the pin is depressed. An elongated actuating rod is mounted to the seat support member transversely of the gas spring. A lever is pivotably mounted to the seat support member between the actuating rod and the pin. The lever is pivotable to and between a first position where the pin is depressed for adjustment of the height of the seat and a second position where the pin is not depressed. Upon rotation of the actuating rod, the pin is depressed and thereby vertically moves the seat relative to the base.