Self energizing disc brakes

Details Self energizing disc brakes Self energizing disc brakes

1984-06-07

1988-11-29

Caldwell, Sr., John W.

Brakes

Wheel

Axially movable brake element or housing therefor

188 716, 188264D, F16D 5504

Patent

active

047874821

ABSTRACT:
A self-energizing disc brake of the spreading type is disclosed. In the disc brake rotatable friction discs provided on opposite sides with linings are adapted to be brought into engagement with radial braking surfaces in a housing by an actuator assembly. The actuator assembly comprises pressure plates located between the discs and centered by pilot lugs, and balls located in oppositely inclined recesses in the adjacent faces of the pressure plates. At least the linings which engage with the pressure plates are separated into annular rings by an annular groove, and the groove is substantially coincident with a pitch circle of constant diameter upon which the recesses lie in an angularly spaced relationship. The groove increases the degree of cooling in the regions of the base of the recesses, thereby reducing the likelihood of hot spotting occurring in such regions.

REFERENCES:
patent: 1286171 (1918-11-01), Cory
patent: 1700860 (1929-02-01), Snell
patent: 2733798 (1956-02-01), Almen et al.
patent: 3063531 (1962-11-01), Aschauer
patent: 3347107 (1967-10-01), Flichy
patent: 3347345 (1967-10-01), Rogers et al.
patent: 3534842 (1970-10-01), Davison
patent: 3586134 (1971-06-01), Westfall
patent: 3693763 (1972-09-01), Powilleit
patent: 3842948 (1974-10-01), Fredrick
patent: 4027758 (1977-06-01), Gustavsson et al.

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