Electromagnetic spring-wound clutch

Details Electromagnetic spring-wound clutch Electromagnetic spring-wound clutch

1978-09-14

1980-09-30

Herrmann, Allan D.

192 clutches and power-stop control

Clutches

Operators

192 35, 192 81C, F16D 2710, F16D 1308

Patent

active

042250277

ABSTRACT:
Rotary input and output members (19), (28) are axially aligned with each other and a rotary clutch disc (32) is axially aligned with and frictionally engageable with the input member (19). A coil-wound spring (33) is wound around the input and output members (19), (28) and connected at its ends to the clutch disc (32) and output member (28) respectively. An electromagnetic coil (26), which energized, attracts the clutch disc (32) into frictional engagement with the input member (19) and causes the coil-wound spring (33) to tightly wind around and embrace the input and output members (19), (28), thereby drivingly connecting the same together. A sleeve (41) formed with a circumferential gap (41a) is disposed between the coil-wound spring (33) and the input member (19) which provides the clutch (11) with a desirable amount of slippage prior to full engagement, evenly distributes the radially inward force applied to the input and output members (19), (28 ) by the coil-wound spring (33) and prevents the coil-wound spring (33) from entering an axial space (42) between the input and output members (19), (28).

REFERENCES:
patent: 2566539 (1951-09-01), Starkey
patent: 3095071 (1963-06-01), Mason
patent: 3171523 (1965-03-01), Shoquist
patent: 3185899 (1965-05-01), Skelton, Jr.
patent: 3224536 (1965-12-01), Mason
patent: 3735847 (1973-05-01), Brucken

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