Liquid-immersed disc brake
AssigneeLucas Industries public limited company
InventorsAnthony G. Price, David Parry, Michael A. Taylor, Andrew R. Broadwell
Life of this patent
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Abstract
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.
Claims11
A liquid-immersed disc brake comprising a housing for containing at least one friction element rotatable with a member to be braked and a torque resisting member, actuator means including a force-applying unit carried externally of the housing and operable via an actuator device to bring the friction element and torque resisting member into braking engagement, and a valve located radially outwardly of the friction elements for controlling a supply of cooling liquid to the housing, the valve being closed by action thereon of the force-applying unit in its non-operative position and opened to permit a flow of cooling liquid to the housing as a result of the force-applying unit performing an actuating movement via the actuating device, a piston associated with said force-applying unit and providing a first part of said valve, and said housing having a cooling oil inlet opening providing a second part of said valve, said first valve part cooperating with said second valve part for controlling flow of cooling fluid through the opening into the housing.
A liquid-immersed disc brake comprising a housing for containing at least one friction element rotatable with a member to be braked and a torque resisting member, actuator means including a force-applying unit carried externally of the housing and operable via an actuator device to bring the friction element and the torque resisting member into braking engagement, a valve located radially outwardly of the friction elements for controlling a supply of cooling liquid to the housing, the valve being closed by action thereon of the force-applying unit in its non-operative position and opened to permit a flow of clean liquid to the housing as a result of the force-applying unit performing an actuating movement, said force-applying unit including an hydraulically operated piston providing a part of the valve which is opened by hydraulic actuation of the piston, and said piston including an axial extension in the form of a cylindrical skirt which provides a first part of the valve and cooperates with an opening in the housing providing a second part of the valve in order to control the flow of cooling liquid through the opening into the housing.
Dependencies are inferred from the claim text.