Clutch-brake mechanism

192 clutches and power-stop control – Clutch and brake – Peripheral brake

Patent

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Details

192 54, 192 89R, 192103C, 192105BA, F16D 4320, F16D 6702, F16D 4324, F16D 1371

Patent

active

042535565

ABSTRACT:
Segmental clutch shoes are operatively deployed between coaxial drive and driven members and are movable radially and circumferentially therebetween into and out of clutching engagement with a drum on the drive member. Equiangularly spaced projections are provided on the driven member corresponding to the number of clutch shoes and extend into recesses provided in the shoes. The trailing side of the projections are each provided with a cam ramp engageable by the shoe. The shoes are normally biased outwardly toward engagement with the rotating drum, and upon initial contact with the drum, are forced circumferentially into contact with the cam ramp. The load imposed on and by the driven member gives rise to a reactive energizing force to effect movement of the shoes outwardly on the cam ramp and into clutching engagement with the rotating drum to rotationally pick up the driven member. A brake band member extends around the periphery of the segmental clutch shoes and is movable between an expanded condition wherein the band is spaced from the shoes and a contracted condition wherein the band engages the shoes to displace the shoes inwardly out of clutching engagement with the drum and to stop rotation of the driven member without interrupting the rotation of the drive member.

REFERENCES:
patent: 2947399 (1960-08-01), Moore et al.
patent: 3696901 (1972-10-01), Henry
patent: 3810533 (1974-05-01), Denson
patent: 3971463 (1976-07-01), Zindler
patent: 4044533 (1977-08-01), Wick

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