Machine element or mechanism – Elements – Cranks and pedals
Patent
1982-04-09
1985-05-28
Dorner, Kenneth J.
Machine element or mechanism
Elements
Cranks and pedals
G05G 114
Patent
active
045192715
ABSTRACT:
An apparatus for changing the leverage of an existing pedal assembly by telescoping the pedal of the pedal assembly during rotation of the pedal about the pedal assembly axle comprising a housing having an axle shaft rotatably disposed therein, a cam plate operatively mounted on the axle shaft being stationary with respect to the housing, a cam ring radially spaced from the cam plate by a ring bearing disposed therebetween, a pedal arm attached to the axle shaft, a telescoping pedal guide movably mounted on the pedal arm wherein the pedal guide includes a lead bolt attached thereto and a sprocket operatively interconnected to the pedal to rotate therewith in relationship to the axle shaft the lead bolt being slidably disposed on the periphery of the cam plate wherein the cam plate and cam ring control the movement of the lead bolt thus controlling the telescoping motion of the pedal guide as the pedal arm and pedal guide rotate with the axle shaft.
REFERENCES:
patent: 516137 (1894-03-01), Tyler
patent: 550206 (1895-11-01), Tompkins
patent: 571793 (1896-11-01), Rau
patent: 623863 (1899-04-01), Atterbury
patent: 641728 (1900-01-01), Robinson
patent: 653873 (1900-07-01), Malone
patent: 669542 (1901-03-01), Moore
patent: 676629 (1901-06-01), Moore
patent: 1636327 (1927-07-01), Roe
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