Ruth M. Dillon
Marriage and Family Therapists at 16 Ave, Denver, CO
License number
Colorado 479
Issued Date
Mar 19, 1999
Renew Date
Jul 13, 2005
Expiration Date
Jul 13, 2005
Type
Marriage and Family Therapist
Address
Address
2250 E 16Th Ave, Denver, CO 80206
Professional information
Indexed Cycle Derailleur
US Patent:
2003016, Sep 4, 2003
Filed:
Mar 1, 2002
Appl. No.:
10/091095
Inventors:
Tom Dillon - Lakewood CO, US
Ruth Dillon - Lakewood CO, US
Ruth Dillon - Lakewood CO, US
International Classification:
F16H009/00, F16H061/00
US Classification:
474/080000, 474/082000
Abstract:
A cycle derailleur incorporates an indexing mechanism (indexer) as an integral part of the derailleur. More specifically, the indexer is a physical part of the derailleur structure, and is activated by the pull or release of a cable (e.g., operated via gearshift control on a cycle handlebar). Actuation of the indexer requires exertion of a threshold force sufficient to overcome built-in resistance of a detent-style, spring-loaded mechanism. As shifts are made from one gear to another, the indexer is adapted to urge the derailleur into precision alignment with each selected gear. In each of the described embodiments, the indexed derailleur and a method for indexing (digitizing) gear changes by means of, for example, a movable bearing/detent mechanism, are characterized by a deformable parallelogram linkage actuated via the cable through a gearshift control. The result is an improved cycle shifter system that fosters accuracy and avoids derailleur mislocation between shifts.