B - Operations – Transporting – 61 – H
Patent
B - Operations, Transporting
61
H
188/69
B61H 15/00 (2006.01) F16D 55/224 (2006.01) F16D 65/56 (2006.01) F16D 65/58 (2006.01)
Patent
CA 1095435
Ref: 3619. ABSTRACT Friction brake apparatus includes a brake force applying member coupled via a linkage and slack adjusting means to a brake force actuator, the apparatus being characterised in that the linkage includes a one-way clutch and is arranged such that, on return operation of the brake force applying member to release the brake, the force applying member is permitted to return a predetermined distance prior to the clutch becoming effective to resist further return movement of the brake force applying member yet permit further return motion of the brake force actuator by virtue of the slack adjusting means. Slack adjusting means comprises a linearly movable input member, a linearly movable output member, and an element for transmitting a brake force from the input member to the output member, characterised in that the input and output members are constrained against relative angular movement, and in that the element is engaged with one of said members via co-operating helical thread means provided therebetween and is engageable with the other of said members via co- operable clutch faces provided therebetween and arranged such that in use the clutch faces are retained in force-transmitting engagement by the reaction forces in the co-operating helical thread means and are disengageable when said reaction forces are removed or relieved thereby to permit relative rotation, and hence relative linear displacement corresponding to the slack to be taken up, between the element and said one member in engagement therewith via the co-operating helical thread means.
288338
Fetherstonhaugh & Co.
Westinghouse Brake & Signal Company Limited
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