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:
Nov. 17, 1998
Filed:
Jun. 07, 1996
Thomas Lee Ellsworth, Shorewood, MN (US);
Alwin J Stahel, St. Paul, MN (US);
Peter Robert Fervoy, St. Paul, MN (US);
Safco Products Company, New Hope, MN (US);
Abstract
An improved industrial chair having a mechanism for adjusting the position of a support column in relation to a fixed platform, such as a chair base portion. The chair comprises a support column having an exterior surface with a plurality of engaging surfaces arranged along the length of the column for selectively engaging portions of a coupling. The coupling is shaped for selectively engaging the support column and positioning the support column relative to the fixed platform. The coupling has an inner surface shaped for contacting the support column engaging surfaces in a substantially matched shape friction fit, and the coupling further has an adjustable circumference structure for permitting selection between locking engagement and relative movement between the support column and the coupling. The chair further has structure suitable for operably retaining the coupling in fixed relation to the support platform.