Brakes – Wheel – Transversely movable
Patent
1981-11-24
1984-06-05
Butler, Douglas C.
Brakes
Wheel
Transversely movable
188196BA, F16D 6556
Patent
active
044523432
ABSTRACT:
A road brake automatic slack adjuster mechanism having input and output members each pivotable about a common axis to apply and release a brake-applying force. These two members are interconnected by a force-transmitting member which, on the one hand, is threadedly engaged with the output member and, on the other hand, is releasably clutched to the input member. To effect slack adjustment, the mechanism includes brake-clearance determining device settable to predetermine the required brake clearance. This brake-clearance determining device includes a stepless clutch which interconnects the brake-clearance determining device and the output member. The clutch is released upon pivotal movement of the output member in a brake-force applying direction, equating with the required brake-clearance to allow the clutch to slip during movement of the output member corresponding to excessive clearance. Upon the return stroke, the clutch is re-engaged so that pivotal return movement of the output member is limited by the brake-clearance determining device while the input member is allowed fully to return to its initial position.
REFERENCES:
patent: 3921765 (1975-11-01), Swander, Jr.
patent: 4121703 (1978-10-01), Moss
Butler Douglas C.
Westinghouse Brake and Signal Company Ltd.
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