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. 10, 1987
Filed:
Dec. 19, 1983
Applicant:
Inventor:
Peter R Rogers, Chepstow, GB;
Assignee:
Cam Gears Limited, Hertfordshire, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B21H / ;
U.S. Cl.
CPC ...
291592 ; 24422 ;
Abstract
A variable ratio rack has a linear array of teeth. The teeth in the linear array are disposed at a plurality of final tooth angles. In order to form the rack, a linear array of teeth is cut in a workpiece. The teeth in the linear array of cut teeth have a tooth angle which is less than the largest tooth angle of the plurality of final tooth angles and greater than the smallest tooth angle of the plurality of final tooth angles. After the linear array of teeth has been cut in the workpiece, the cut teeth are deformed to have tooth angles corresponding to the final tooth angles.