Machine element or mechanism – Control lever and linkage systems – Elements
Patent
1994-08-09
1996-12-17
Bonck, Rodney H.
Machine element or mechanism
Control lever and linkage systems
Elements
74489, B62K 2304, B62M 2504
Patent
active
055842135
ABSTRACT:
A rotatable gripping surface for a derailleur-type bicycle gear shifting system is formed of a resilient material with axially extending alternating ribs and grooves. The ribs and grooves are spaced such that they fit naturally into the crooks of the rider's thumb and finger or fingers and the portion of the palm therebetween. The ribs provide an increased diameter to aid in the transmission of torque and to protrude above any mud which may have collected thereon. To further enhance the torque transmitting capabilities of the grip and the ability to remain effective in the presence of mud and other debris, the surfaces of the ribs are provided with a pattern of nubs. The hubs are engaged and deflected slightly by an operator's thumb and finger and the portion of the palm therebetween to transmit torque to the rotational grip. The deflection of the hubs as in the case of the ribs will provide for the transmission of torque in the presence of any debris such as mud which may be deposited on or between the nubs and the ribs and grooves.
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SRAM Corporation Drawings, Apr. 22, 1992 -Representation of handgrip designs available to the public more than one year prior to filing of this application.
Caron Andrew J.
Cheever John D.
Larson Michael W.
Laun Tymme A.
Battista Mary Ann
Bonck Rodney H.
Perkins Jefferson
SRAM Corporation
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