Bicycle speedometer tire drive gear adaptor assembly

Details Bicycle speedometer tire drive gear adaptor assembly Bicycle speedometer tire drive gear adaptor assembly

1974-01-31

1976-02-17

Scott, Samuel

Machine element or mechanism

Power take-off

Speedometer

74501R, 235 95R, F16H 3700

Patent

active

039383954

ABSTRACT:
A bicycle speedometer tire drive gear adaptor assembly comprising a pair of helical gears engaging at an angle of substantially 120.degree.. The gears are supported in a unitary housing with one of the gears rotated by a friction wheel engaging the bicycle tire and the other, which utilizes its own teeth as a bearing, rotates at a substantially reduced speed to transmit movement through a flexible shaft to the speedometer. The angle of gear engagement aids in eliminating sharp corners or small radii in the flexible shaft. The housing is secured to the front bicycle fork by oppositely directed arcuate spring clip fingers having reverse bent ends nesting in and conforming to the shape of a pair of longitudinal grooves in the housing to securely hold the housing.

REFERENCES:
patent: 1441473 (1923-01-01), Ames
patent: 3643860 (1972-02-01), Murphy et al.

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