192 clutches and power-stop control – Latch operated – Transversely moving transmission member
Patent
1987-05-18
1988-08-02
Bonck, Rodney H.
192 clutches and power-stop control
Latch operated
Transversely moving transmission member
192 12BA, 192 17D, 192 33C, 192 81C, F16D 1302, F16D 1308
Patent
active
047609036
ABSTRACT:
A method and apparatus for extending the life of a control or drive spring in a wrap spring clutch. The tang of the control spring fits into a control slot of a control collar which rotates when the clutch is actuated. When the clutch is actuated, the control spring "wraps down" on both a rotating input member and the output shaft of the clutch to transfer the rotary motion of the input member to the output shaft. An elastomeric sleeve which is dimensioned to provide an interference fit between the tang and control slot of the control member is positioned on the tang and inserted in the control slot to remove any looseness or play between the tang and the control slot and thereby extend the life of the control spring and clutch.
REFERENCES:
patent: 2577181 (1951-12-01), Christensen
patent: 3434576 (1969-03-01), Blodgett
patent: 3726372 (1973-04-01), Baer et al.
patent: 3920106 (1975-11-01), Nisenson
patent: 4437552 (1984-03-01), Toyama
Warner Wrap Spring Clutches & Brakes, Warner Electric Brake & Clutch Company, 1982, pp. 20 & 21.
Ganton Keith A.
Stegelmeier Ulrich H. E.
Bonck Rodney H.
Hawk Jr. Wilbert
NCR Corporation
Sessler Jr. Albert L.
Wargo Elmer
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