Drum brake

Details Drum brake Drum brake

1998-07-01

2000-05-09

Butler, Douglas C.

Brakes

Wheel

Transversely movable

188334, F16D 5100

Patent

active

060590777

ABSTRACT:
Within a wheel cylinder, a drive piston and a control piston, the base ends of which receives a hydraulic pressure from a master cylinder, are oppositely disposed while being axially aligned with each other. A primary shoe is pressed by the drive piston, and an anchor reaction force output from a secondary shoe is distributed to and loaded on an anchor portion and the control piston through a control lever. When the anchor reaction force reaches a predetermined value of force or larger, an anchor-reaction-force control link mechanism operates to move the primary shoe apart from a brake drum, thereby checking the increase of the anchor reaction force.

REFERENCES:
patent: 2029884 (1936-02-01), Majneri

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