192 clutches and power-stop control – Clutches – Operators
Patent
1995-09-29
1998-03-24
Lorence, Richard M.
192 clutches and power-stop control
Clutches
Operators
192 76, 192107T, F16D 4318
Patent
active
057302693
ABSTRACT:
A centrifugal friction clutch which can transmit torque and rotation has an input shaft, which is rotatable about an axis, and an output member. A plurality of shoes are constrained to rotate with the input shaft and arranged to move in a radial plane perpendicular to the input shaft axis. The shoes have a tapered profile with a narrower portion and a wider portion, with the narrower portion located further away from the axis of the input shaft. The output member of the clutch has an annular drum surrounding the shoes, and the drum includes surfaces which define a tapered cavity adapted to receive the shoes. The frictional engagement of the clutch is improved by the tapered geometry of the shoes and drum. A restraining spring is coupled to the shoes and adapted to urge the shoes radially inwardly. Above a predetermined rotation speed of the input shaft, centrifugal force causes the shoes to move along the radial plane to frictionally engage the drum thereby transmitting torque and rotation from the input shaft to the output member.
REFERENCES:
patent: 3204737 (1965-09-01), Anner
patent: 3338361 (1967-08-01), Hoff
patent: 3367464 (1968-02-01), Fullerton et al.
patent: 3627089 (1971-12-01), Dence
patent: 4016963 (1977-04-01), St. John
patent: 4117918 (1978-10-01), Silberschlag
patent: 4610343 (1986-09-01), Hikari
patent: 4856637 (1989-08-01), Gebhart
patent: 5165510 (1992-11-01), Lunati
Hersey Clutch Company
Lorence Richard M.
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