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. 02, 1985
Filed:
Nov. 03, 1983
Applicant:
Inventor:
Roger O Durham, Glendale, CA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16H / ;
U.S. Cl.
CPC ...
474152 ; 74437 ;
Abstract
A chain engagement slot for bicycle sprockets, which enables a bicycle chain to be shifted from a smaller sprocket to a larger sprocket mounted next to it on a common cluster body. The chain partly enters the chain engagement slot, causing sufficient contact between the chain and the next sprocket tooth to enable the chain to be seated on the larger sprocket.