Lucas Industries Public Limited Company

Michael A Taylor

Anthony G Price

Michael Williamson

David Parry

Andrew R Broadwell

A liquid-immersed disc brake has a housing containing rotatable and stationary members operated by a wedge device for brake actuation from actuating means. The brake is supplied with cooling liquid, of which the flow is controlled by a valve, a portion of which is incorporated into the housing. The valve is closed by action thereon of the actuator means and opened so as to admit cooling liquid to the brake as a result of the actuator means performing an actuating movement.

Liquid-immersed disc brake

In a master cylinder and booster assembly for a vehicle hydraulic system, the booster has a housing provided with a bore, an inlet connected to a source of hydraulic pressure, and an outlet connected to a booster reservoir, input and boost pistons working in the bore and a boost chamber for pressurization by fluid from the source, under the control of valve means, to actuate the boost piston which in turn actuates the master cylinder. The booster has a permanent connection between the boost chamber and the outlet and a connection between the source and the boost chamber which is closed when the booster is inoperative and open during operation. In order to provide a supply of fluid for a master cylinder reservoir, the booster has a feed passage leading from the bore to the master cylinder reservoir and an overflow passage leading from that reservoir to the outlet. The master cylinder reservoir includes a partition separating it into an active part containing the feed and overflow passages, and a passive part containing an outlet port for connection to the master cylinder. The partition includes a passage allowing limited fluid flow between the active and passive parts.

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Gwent, United Kingdom

Michael A Taylor