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:
Jul. 17, 1979
Filed:
Dec. 29, 1977
Philip J Williams, Poland, OH (US);
GF Business Equipment, Inc., Youngstown, OH (US);
Abstract
A control mechanism for a tilt seat chair includes a control body supported in a relatively stationary position by a fixedly attached vertical post member. A torsion unit comprising a pair of resiliently urged concentric sleeves extends through opposed sidewalls of the control body forwardly of the post member and includes a forwardly extending tension lever having adjusting means constantly bearing against a case hardened transverse plate carried by the control body. A chair seat spider assembly pivotedly supported solely by the innermost sleeve of the torsion unit normally abuts, in its at-rest-position, nonmetallic forward stop means carried by the control body and is limited in rearward tilting displacement by abutment of the same spider assembly with rear stop ramps comprising integral portions of the control body disposed rearwardly of the vertical post member.