Machine element or mechanism – Elements – Cranks and pedals
Patent
1992-01-03
1993-02-23
Braun, Leslie A.
Machine element or mechanism
Elements
Cranks and pedals
745941, 280215, G05G 114
Patent
active
051880032
ABSTRACT:
A power assist device for use with a crank-operated drive mechanism including a pair of crank arms extending from opposite ends of a shaft mounted for rotation on a frame. The crank arms rotate the shaft about an axis with the crank arms revolving about the axis. The power assist device includes an energy storing mechanism mounted on the frame and operatively connected to the shaft for movement with the shaft. The energy storing mechanism stores energy during a first portion of a revolution of the crank arms, releases energy during a second portion of the revolution of the crank arms to assist in driving the rotation of the shaft, stores energy during a third portion of the revolution of the crank arms, and releases energy during a fourth portion of the revolution of the crank arms to assist in driving the rotation of the shaft.
REFERENCES:
patent: 328709 (1985-10-01), Paessler
patent: 567629 (1896-09-01), Young
patent: 642758 (1900-02-01), Runge
patent: 704377 (1902-07-01), Rieber
patent: 740156 (1903-09-01), Mendenhall
patent: 868329 (1907-10-01), Corbitt
patent: 1564548 (1925-12-01), Ford
patent: 1677017 (1928-07-01), Boardman
patent: 1707618 (1929-04-01), Keogh
patent: 1867731 (1932-07-01), Clarke
patent: 1981737 (1934-11-01), McIlwain
patent: 2638359 (1953-05-01), Crumble
patent: 3779099 (1973-12-01), Trammell, Jr.
patent: 3906807 (1975-09-01), Trammell, Jr.
patent: 4029334 (1977-06-01), Trammell, Jr.
patent: 4108459 (1978-08-01), Alvigini
patent: 4133550 (1979-01-01), Brown
patent: 4159652 (1979-07-01), Trammell, Jr.
patent: 4416464 (1983-11-01), Mattox
patent: 5035678 (1991-07-01), Hageman
Braun Leslie A.
Equi-Cycle Corporation
Massey Ryan W.
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