Twist-grip shifter for bicycles and a bicycle having a twist-gri

Details Twist-grip shifter for bicycles and a bicycle having a twist-gri Twist-grip shifter for bicycles and a bicycle having a twist-gri

1996-03-04

1998-09-01

Marmor, Charles A.

Machine element or mechanism

Control lever and linkage systems

Multiple controlling elements for single controlled element

745022, 74527, B62M 2504

Patent

active

057995419

ABSTRACT:
A twist-grip shifter for bicycles having a twist grip or grip part which is actuated by the rider's hand to change the gears of the bicycle, and a cable winding mechanism or coil wind-up mechanism. The twist grip and the cable winding mechanism of the twist-grip shifter are connected to one another, and debris and other contaminants can be prevented from entering the interior of the twist-grip shifter near this connection by providing a contactless seal or a friction seal. The contactless seal includes a projecting collar on the cable winding mechanism which extends into a groove formed in the twist grip. The collar of the cable winding mechanism essentially does not contact the groove of the twist grip. The friction seal includes a lip or flange formed from the rubber material of the twist grip, which lip then contacts a portion of the collar of the cable winding mechanism.

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