Brake cable operating means affording a mechanical advantage

Details Brake cable operating means affording a mechanical advantage Brake cable operating means affording a mechanical advantage

B - Operations, Transporting

60

T

142/17

B60T 7/04 (2006.01)

Patent

CA 1109769

BRAKE CABLE OPERATING MEANS AFFORDING A MECHANICAL ADVANTAGE ABSTRACT OF THE DISCLOSURE A parking brake operating mechanism is disclosed which includes a ratchet link and an operating lever pivotally connected with a bracket housing so as to effect a mechanical advantage when displacing the brake cable operating pin in the brake-engaged direction. The ratchet link is pivotally connected intermediate its ends with the housing by a first pivot axis, and the operating lever's pivotally connected intermediate its ends with one end of the ratchet link by a second pivot axis, one end of the operating lever being connected with the pin that operates the parking brake cable. The first and second pivot axes are arranged generally on opposite sides of the brake cable pin, the distance between said axes being greater than the distance between the pin axis and the first axis, thereby to effect the desired mechanical advantage. A pawl cooperates with ratchet teeth on the ratchet link to normally prevent pivotal movement thereof in the brake-released direction.

326389

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