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:
Feb. 16, 1982
Filed:
Nov. 01, 1979
Robert H Godwin, Evansville, IN (US);
Herbert E Collignon, Evansville, IN (US);
Bliss & Laughlin, Oak Brook, IL (US);
Abstract
A spindle assembly for a chair or the like includes an outer tube tapered to fit in a chair base, an inner tube having an upper end tapered to fit the chair control, and a bushing near the upper end of the outer tube to guidingly receive the inner tube therein. A screw is provided in the assembly and threadedly engaged with the inner tube, with means to prevent the screw from rotating in the absence of any axial external load on the assembly, whereby rotation of the inner tube with respect to the outer tube will cause a change of overall length of the assembly, to provide a height adjustment for a chair assembly secured thereto. Spring means employed in the assembly resiliently support the seat under a seating load and also accommodate disengagement of a rotational lock to permit swiveling of the seat with respect to the base without any change of overall height.