192 clutches and power-stop control – Clutches – Fluent material
Patent
1980-03-17
1981-12-15
Herrmann, Allan D.
192 clutches and power-stop control
Clutches
Fluent material
123 4112, 192 82T, 192 96, 251129, F16D 3500, F16D 4325
Patent
active
043054919
ABSTRACT:
A viscous fluid clutch (10) rotatable about an axis of rotation (24) and adapted to be controlled by a temperature sensing element (104). The fluid clutch includes an axially extending shaft (22) disposed on the axis of rotation, a first member (14) secured to the shaft for rotation and a second member (16) rotatably disposed on the shaft relative to the first member. Shear surfaces (62, 64) are disposed on the first and second members and form an operating chamber (18) therebetween. A fluid storage chamber (70) is disposed adjacent to the operating chamber and valve means (80) is provided for effecting selective communication between the storage chamber and the operating chamber and includes a valve member (82) having first and second positions, one of which provides fluid communication between the storage chamber and the operating chamber and the other which blocks the fluid communication. A fluid is disposed within the storage chamber and is selectively displaceable into the operating chamber. An electromagnetic coil (88) having an axial opening therein defined by a surface of the coil is located within the shaft and an armature member (84) having an outer surface is located at least partially within the axial opening with the outer surface of the armature member disposed contiguous to the inner surface of the coil. The armature member is movable in an axial direction upon energization of the coil and is operatively connected to the valve member to effect movement of the valve member.
REFERENCES:
patent: 2687789 (1954-08-01), Nardone
patent: 3568647 (1971-03-01), Adams
patent: 3985333 (1976-10-01), Paulsen
patent: 4228880 (1980-10-01), Gee
Eaton Corporation
Herrmann Allan D.
McCloskey R. J.
Union M. L.
Yakimow J.
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