192 clutches and power-stop control – Clutches – Operators
Patent
1990-10-29
1991-12-10
Bonck, Rodney H.
192 clutches and power-stop control
Clutches
Operators
60469, 192 30V, 192109F, 303 87, F16D 258, F16D 2514
Patent
active
050709836
ABSTRACT:
A damper for use with a hydraulic clutch actuator of the type including a master cylinder and a slave cylinder with a conduit interconnecting the outlet of the master cylinder and the inlet of the slave cylinder. The damper is positioned in the conduit between the master cylinder and slave cylinder and includes a diaphragm having a front face constituting a barrier wall of the hydraulic system so that the diaphragm can deflect in response to vibrations transmitted through the hydraulic fluid in the system to effect damping of the vibration and further includes a structure confronting but spaced from the rear face of the central region of the diaphragm which operates to limit the deflection of the central region of the diaphragm to a predetermined maximum magnitude to limit the stress at the center of the diaphragm to an acceptable level and thereby improve the fatigue life of the diaphragm. The limiting structure may comprise an upset portion on the cover; an elastomeric button on the inner face of the cover; a Belleville spring between the rear face of the diaphragm and the inside face of the cover; or a suitable liquid in the space between the rear face of the diaphragm and the inner face of the cover. The space between the limiting structure and the rear face of the diaphragm may be selectively varied to accommodate hydraulic control systems of varying hydraulic characteristics.
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patent: 4924992 (1990-05-01), Romig
Hartig Julie A.
Leigh-Monstevens Keith V.
Automotive Products plc
Bonck Rodney H.
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