Machine element or mechanism – Control lever and linkage systems – Multiple controlled elements
Patent
1984-09-25
1987-01-06
Hershkovitz, Abraham
Machine element or mechanism
Control lever and linkage systems
Multiple controlled elements
74488, 74 8917, 74 8921, 60567, 60571, 60594, 180336, G05G 900
Patent
active
046337261
ABSTRACT:
A hydraulic driving system for motorcycle gear shift includes a primary cylinder combination, a secondary cylinder and a set of delivery conduits for handling hydraulic fluid connected therebetween, in which two primary cylinders with different diameters are oppositely formed in a hollow portion of a motorcycle handle and the two primary cylinders are respectively fluidically communicated with the secondary cylinder to reciprocatively and linearly move a gear rack and to drive the shaft of the gear shift by rotating a twist bar, formed on the handle, having an inclined-plane tongue alternatively actuating the two primary cylinders in the handle.
REFERENCES:
patent: 2615305 (1952-10-01), Janssen
patent: 2788676 (1957-04-01), Spexarth
patent: 2891498 (1959-06-01), Schroeder
patent: 3475911 (1969-11-01), Harrison
patent: 3991845 (1976-11-01), La Pointe
patent: 4030560 (1977-06-01), Parquet
patent: 4069881 (1978-01-01), Shiber
patent: 4221276 (1980-09-01), Mitchell
patent: 4497503 (1985-02-01), Irwin
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