Brake transmission mechanism in a brake lever of bicycle
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United States of America Patent
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N/A
Issued Date -
Aug 9, 2012
app pub date -
Mar 4, 2012
filing date -
Feb 8, 2012
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A brake operating device for bicycle is provided a housing mounted on a handlebar and including a channel; a hydraulic brake lever pivotably secured to the housing and including an push member at one end, the push member including a cavity; a brake transmission mechanism disposed in the channel and comprising a stepped-diameter piston including an annular first groove distal the cavity, an annular second groove proximate the cavity, an intermediate groove, a resilient ring member put on the first groove, a return spring biasing against one end of the piston, an O-ring sealingly put on the second groove, and a flat surface at the other end facing the cavity; and an actuating member rotatably contacting both the cavity and the flat surface.
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