192 clutches and power-stop control – Clutches – Automatic
Patent
1988-01-22
1989-11-14
Braun, Leslie A.
192 clutches and power-stop control
Clutches
Automatic
192 41A, F16D 4107
Patent
active
048800937
ABSTRACT:
Free-wheel device having clamping cams, intended to be mounted between an external cylindrical sliding path (5) and an internal cylindrical sliding path (4) comprising a cage (3) of generally cylindrical shape provided with a plurality of apertures (8) for the passage of at least part of each cam (2) and a strap spring (1) of generally cylindrical shape provided with a plurality of windows (9) within which the cams are mounted, each cam bearing against a rim of the corresponding window defining a pivoting edge (10) for the cam and subjected to the action of a pivoting tongue (11) fixed to the spring, tending to cause the cam to pivot in the direction favouring clamping while exerting a thrust on the cam towards the pivoting ridge (10), characterized in that the position and the shape of the zone of contact between the cam and the pivoting tongue are selected in a manner such that the lever arm (l) of the variable force (F) exerted by the tongue relative to the pivoting edge (10) varies in inverse proportion to the value of the force when the misalignment of the device varies so that the restoring torque remains constant whatever may be the interval between the internal (4) and external (5) sliding paths.
REFERENCES:
patent: 2744598 (1956-05-01), Troendly
patent: 2824635 (1958-02-01), Troendly et al.
patent: 2973072 (1961-02-01), Ferris
patent: 3219163 (1965-11-01), Zlotek
Braun Leslie A.
Lorence Richard M.
SKF France
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