Shoe-drum brakes for vehicles

Details Shoe-drum brakes for vehicles Shoe-drum brakes for vehicles

1974-03-26

1976-08-10

Cline, William R.

Expansible chamber devices

Mutually relatively movable cylinder or sleeve, member...

Cylinder or sleeve forms working member

92 65, 92 75, F01B 720

Patent

active

039734730

ABSTRACT:
In an hydraulic actuating assembly for a vehicle shoe-drum brake comprising first and second relatively slidable members, the first member is provided with a longitudinally extending bore which is closed at one end and in which works a portion of the second member, and a sealed hydraulic chamber is defined within the bore between the closed end of the first member and the second member. One of the members incorporates an inlet port for the chamber and a vent port is located in a portion of the wall of that member to provide an indication, by external leakage of hydraulic fluid, of failure of the sealing of the chamber.

REFERENCES:
patent: 3150563 (1964-09-01), Carrigan
patent: 3431730 (1969-03-01), Bueler
patent: 3486591 (1969-12-01), Scheffler
patent: 3500725 (1970-03-01), Haddock, Jr.
patent: 3554333 (1971-01-01), Hoenick
patent: 3673926 (1972-07-01), Mohri
patent: 3684063 (1972-08-01), Crabtree
patent: 3704652 (1972-12-01), Hoenick

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