192 clutches and power-stop control – Clutches – Operators
Patent
1983-02-09
1986-03-25
Bonck, Rodney H.
192 clutches and power-stop control
Clutches
Operators
192 88A, F16D 2508, F15B 1304
Patent
active
045777411
ABSTRACT:
A servomotor wherein a piston is reciprocable in a cylinder and is connected with the disengaging mechanism of a friction clutch. A suction chamber at one side of the piston is connected to a suction generating device in response to opening of a first solenoid-operated valve whereby the piston moves from a first to a second end position to thereby reduce the volume of the chamber to a minimum value and to automatically close a shutoff valve which seals the chamber from the suction generating device independently of the solenoid-operated valve as soon as the piston reaches its second end position. A second solenoid-operated valve can connect the chamber with or seal the chamber from the atmosphere independently of the shutoff valve. The shutoff valve reduces the reaction time of the servomotor as regards the return movement of the piston to its first end position under the action of the disengaging mechanism and/or a coil spring, and the shutoff valve also reduces the stress upon a deformable membrane which forms part of the piston.
REFERENCES:
patent: 3378121 (1968-04-01), Foret
patent: 4426915 (1984-01-01), Maucher et al.
patent: 4467901 (1984-08-01), Hattori et al.
Bonck Rodney H.
Kontler Peter K.
LuK Lamellen und Kupplungsbau GmbH
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