Speed control apparatus for bicycle having a sound producing dev

Details Speed control apparatus for bicycle having a sound producing dev Speed control apparatus for bicycle having a sound producing dev

1992-03-30

1994-05-03

Luong, Vinh T.

Machine element or mechanism

Control lever and linkage systems

Hand operated

74531, 74483, F16C 110, G05G 1100

Patent

active

053077067

ABSTRACT:
A speed control apparatus for a bicycle for selecting a speed position from a plurality of speed positions based on a wire winding amount. This apparatus includes a fixed element, a displaceable control lever, a takeup element pivotally supported by the fixed element for winding a wire, the takeup element being rotatable to rotate the takeup portion by the displacement of the control lever in a wire winding direction to select one of the speed positions, and a position setting mechanism disposed between the control lever and the fixed element. The position setting mechanism includes a clutch pawl and clutch teeth. The clutch pawl is movable between an engaging position to engage the clutch teeth and a retracted position away from the clutch teeth. The takeup element is retained in a selected speed position by the clutch pawl engaging one of the clutch teeth. This speed control apparatus further includes a hammer for amplifying movement of the clutch pawl to the engaging position and transmitting the movement as a shock. The hammer strikes an apparatus casing acting as a resonant body to produce a sound.

REFERENCES:
patent: 3856123 (1974-12-01), Kinsey
patent: 3945477 (1976-03-01), Maucher et al.
patent: 4699018 (1987-10-01), Tagawa
patent: 4905537 (1990-03-01), Nagano
patent: 4966046 (1990-10-01), Tagawa
patent: 5012692 (1991-05-01), Nagano
patent: 5186072 (1993-02-01), Nagano
patent: 5203213 (1993-04-01), Nagano

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