Bicycle single-acted gear-shifting device and its unidirectional operator mechanism
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United States of America Patent
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Sep 12, 2017
Grant Date -
Apr 21, 2016
app pub date -
Nov 6, 2015
filing date -
Feb 6, 2012
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Abstract
Bicycle single-acted gear-shifting device (12), comprising one front or rear derailleur (10, 20) coupling a ratchet indexing mechanism (13) acted by only one single-acting slave-connector (110, 120) attached to said ratchet indexing mechanism (13), operated by a unidirectional operator mechanism (15) with optional multiple unidirectional handle operator units (30). Said ratchet indexing mechanism (13) removably defines and holds a plurality of predetermined working stable positions of the derailleur's cage-plate (102,202) for each gearshift, and it comprises a ratchet-gear (1) with a pawls' system. And said unidirectional operator mechanism (15) comprises optional multiple unidirectional operator units (30) connected in parallel with the only single-acting slave-connector (110, 120), in order to indistinctly operate it, by means of a branched single-acting drive circuit (115, 123) which can be arranged either using a hydraulic circuit (115, 115′, 115″) acting by pushing, or using flexible cables (123,123′) and housings (124) to act by pulling.
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