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. 08, 1997
Filed:
Jun. 07, 1995
Applicant:
Inventor:
Raymond D Gilbert, Springfield, VA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16H / ;
U.S. Cl.
CPC ...
474 50 ; 474 69 ;
Abstract
A chain shifting apparatus senses bias of pre-set peak pedal force to incrementally move a derailleur cable in a first direction, and to store spring energy. A governor apparatus senses peak cadence to move the cable in a second direction. A cam action from a pedalled-sprocket communicates a timing instant for shifting under low chain transmitting force. A derailleur cable motion distributor communicates single cable up-shift and down-shift instruction from a finger shift and from spring-loaded automatic collet actions to route chains onto available front or rear sprocket sets.