Title: Releasable lock for brakes

Abstract: A locking device for a reciprocating rod brake actuator movable between brake applying and brake releasing positions includes a pivoted pawl movable between locking and releasing positions for releasably locking the rod in its brake applying position. A spring normally biases the pawl to its locking position, and a fluid cylinder is operative when pressurized for moving the locking device to its releasing position. The rod is movable toward and away from the pawl, and is normally supported against movement away from the pawl by a releasable support. Release of the support frees the rod for free movement between its brake applying and releasing positions even though the pawl is in its locking position.

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Inventors: Acre, Leon R. (Ovid, MI, US)

Application Number: 640175
Filing Date: 1975-12-12
Publication_date: 1977-02-15
Assignee: Midland-Ross Corporation (Cleveland, OH)
Primary Class(es): 188/265 92/25, 188/67, 303/89
Other Classes:
US Patent Ref:

1586269	May, 1926	Smith	188/67.
2505612	Apr, 1950	Ericson	188/67.
2759569	Aug, 1956	Keehn	188/265.
3402792	Sep, 1968	Masser	188/265.
3597016	Aug, 1971	Gachot et al.	188/265.
3759147	Sep, 1973	Johnsson et al.	92/25.
3874747	Apr, 1975	Case et al.	188/265.

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