Machine element or mechanism – Gearing – Toothed gear and recirculated unconnected elements
Patent
1976-10-01
1977-09-06
Gerin, Leonard H.
Machine element or mechanism
Gearing
Toothed gear and recirculated unconnected elements
7423017A, F16H 708, F16H 5552
Patent
active
040460231
ABSTRACT:
A transmission, in which power is transmitted from one variable diameter pulley to another through an endless band, has an automatic band tensioning mechanism. The band tensioning mechanism includes a tensioning shaft, an adjusting wheel rotatably mounted on the shaft, and a spring connected between the shaft and the wheel. A worm engaged with the wheel is mounted on a shaft slidably received in a locking member. The worm has a locking shoulder at one end which is normally urged, by the spring acting through the wheel, into engagement with a locking shoulder on one end of the locking member. The worm is moved out of locking engagement against the bias of the spring for rotation of the worm and wheel, and tightening of the spring.
REFERENCES:
patent: 3097540 (1963-07-01), Berens
patent: 3136169 (1964-06-01), Karger et al.
patent: 3138033 (1964-06-01), Glasson et al.
patent: 3490301 (1970-01-01), Steur
patent: 3561279 (1971-02-01), Beneke
patent: 3837234 (1974-09-01), Wu et al.
patent: 3916705 (1975-11-01), Smith et al.
Henle Richard G.
Merkert Clifton S.
Thomas David C.
FMC Corporation
Gerin Leonard H.
Tripp C. E.
Verhoeven J. F.
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