Automatic adjuster for a shoe drum brake

Details Automatic adjuster for a shoe drum brake Automatic adjuster for a shoe drum brake

1984-03-30

1985-12-17

Halvosa, George E. A.

Brakes

Wheel

Transversely movable

188196BA, F16D 6540

Patent

active

045587663

ABSTRACT:
An adjuster for a shoe drum brake has a variable length strut for maintaining a predetermined maximum shoe to drum clearance. A thermally responsive shape memory effect material (SME material as defined in the specification) is arranged to move the brake shoes outwardly by extending the strut to compensate for drum expansion during excessive temperature conditions. Alternative arrangements are described using a body of (SME) material to disable the adjuster during excessive temperature conditions.

REFERENCES:
patent: 2570398 (1951-10-01), Smith
patent: 3554332 (1971-01-01), Harrison
patent: 4051928 (1977-10-01), Hayashida
patent: 4148380 (1979-04-01), Haraikawa
patent: 4390086 (1983-06-01), Conrad

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