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:
Apr. 22, 2003
Filed:
Nov. 20, 2001
Gordon C. Butterfield, Torrington, CT (US);
Allan D. Cox, Thomaston, CT (US);
Giovanni C. Albini, Watertown, CT (US);
The Torrington Company, Torrington, CT (US);
Abstract
A telescopic shaft for rapid length adjustment consists of a tube having a plurality of alternating circumferential ridges and grooves on at least a portion of an inner surface and having an oval cross-section with a major diameter D and a minor diameter D ; a shaft disposed within the tube and having matching circumferential ridges and grooves, the shaft also having an oval cross-section with a major diameter D and a minor diameter D ; and the ridges and grooves of the tube interengaging with the grooves and ridges of the shaft when the shaft major diameter D is substantially parallel with the tube minor diameter D .