Title: Slack adjuster assembly

Abstract: A slack adjuster assembly for brakes includes a slack arm, ratchet wheel and pawl carrier all rotatable about a common axis in unison and relative to one another. The parts rotate in unison during normal operation when the slack arm rotates back and forth in brake apply and brake release directions. When an adjustment is required due to brake wear, the slack arm will overtravel in the brake apply direction. When overtravel occurs, rotation of the pawl carrier with the slack arm and ratchet wheel through the overtravel portion of the stroke is stopped to effect relative rotation between the pawl carrier and the ratchet wheel. Upon return of the slack arm in the brake release direction from an overtravel stroke, the pawl carrier is rotated relative to the slack arm and rotatably drives the ratchet wheel relative to the slack arm.

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Inventors: Acre, Leon R. (Ovid, MI, US)
Lake, Sr., Marquis J. (Corunna, MI, US)

Application Number: 774231
Filing Date: 1977-03-04
Publication_date: 1979-04-24
Assignee: Midland-Ross Corporation (Cleveland, OH)
Primary Class(es): 188/196BA 188/79.55
Other Classes:
US Patent Ref:

1525568	Feb, 1925	Chapin	188/196.
2109284	Feb, 1938	Brinck et al.	188/196.
2650681	Sep, 1953	Shively	188/196.
3013638	Dec, 1961	Satrum	188/79.
3154178	Oct, 1964	House et al.	188/196.
3526303	Sep, 1970	Lodjic et al.	188/79.
3921765	Nov, 1975	Swander	188/79.
3968864	Jul, 1976	Deichsel et al.	188/196.
4015692	Apr, 1977	Mathews	188/196.

Other Refs:
Primary Examiner: Kazenske, Edward R.
Assistant Examiner:
Attorney: Switzer; H. Duane