Machine element or mechanism – Mechanical movements – Rotary to intermittent unidirectional motion
Patent
1983-09-23
1986-01-21
Tapolcai, William E.
Machine element or mechanism
Mechanical movements
Rotary to intermittent unidirectional motion
74110, 74834, F16H 2908
Patent
active
045651051
ABSTRACT:
A power transmission apparatus includes a housing to which input and output shafts are journalled. The input shaft is rotated by a motor or prime mover to thereby drive a cardioidal-shaped cam. The cam reciprocates a drive rod which has a first end slidably and pivotally connected to one end portion of a plural-section lever. The lever is pivoted to a lever supporting structure for oscillating movement, in response to reciprocations of the drive rod. The lever pivots about a fulcrum pivot axis which is fixed relative to the lever and positioned intermediate the ends of the lever. A first end portion of an output rod is slidably and pivotally connected to the other end portion of the lever. A drive speed adjustment mechanism is provided for shifting the lever supporting structure, and thereby the lever, relative to the input and output loads. As a result of such shifting, the throw or distance through which the output rod reciprocates in response to reciprocations of the input rod is variable in a stepless fashion. In addition, the fulcrum pivot axis is movable into alignment with the first end of the output rod so that, when so positioned, the output rod remains stationary even if the lever is oscillating. Also, an output conversion mechanism is provided for converting reciprocations of the output rod into rotary motion of the output shaft, in either the forward or reverse directions.
REFERENCES:
patent: 300734 (1884-06-01), Preston
patent: 491759 (1893-02-01), Prouty
patent: 887785 (1908-05-01), Gauntt
patent: 1401538 (1921-12-01), Kessler
patent: 1413114 (1922-04-01), Haustgen
patent: 1431647 (1922-10-01), Frey
patent: 1508220 (1924-09-01), Frey
patent: 2254195 (1941-08-01), Cicin
patent: 2873611 (1959-02-01), Biermann
patent: 2935385 (1980-05-01), Cornelison
patent: 3224284 (1965-12-01), McElhenny et al.
patent: 3646822 (1972-03-01), Pocaterra
patent: 3888512 (1975-06-01), Peterson
patent: 4109539 (1978-08-01), Feleus
patent: 4182203 (1980-01-01), Drury
patent: 4235130 (1980-11-01), Dulger et al.
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