Title: Trailer hitch and brake actuating assembly

Abstract: A trailer is adapted to be hitched to a towing vehicle by a surge brake actuator which includes pivotally interconnected forward and rear units. When the rear unit moves forwardly relative to the forward unit, a plunger assembly is moved to a braking position to actuate a master cylinder and apply the trailer brakes. The disclosure pertains to (1) the construction and operation of the plunger assembly (2) the construction and mounting of the master cylinder (3) a friction lock for holding a breakaway cable in an emergency position when the trailer breaks away from the towing vehicle and (4) a clamping and latching mechanism for releasably coupling the forward unit of the actuator to a hitch ball on the towing vehicle.

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Inventors: Huetsch, Larry C. (Rockford, IL, US)
Swanson, James P. (Winnebago, IL, US)
Nyquist, Stephen E. (Cherry Valley, IL, US)

Application Number: 910100
Filing Date: 1978-05-30
Publication_date: 1980-09-23
Assignee: Atwood Vacuum Machine Company (Rockford, IL)
Primary Class(es): 188/112R
Other Classes:
US Patent Ref:

1482268	Jan, 1924	Schopper	188/65.
2135097	Nov, 1938	Billingsley	188/112.
2341965	Feb, 1944	Wagner	188/112.
2729309	Jan, 1956	Mullin	188/112.
2922623	Jan, 1960	Simmons	188/65.
2956648	Oct, 1960	McDaniel	188/112.
2960194	Nov, 1960	Stromberg	188/112.
3175649	Mar, 1965	Kirk et al.	188/112.
3180454	Apr, 1965	Angelis et al.	188/112.
3448834	Jun, 1969	Lammers	188/112.
3567253	Mar, 1971	De Puydt et al.	280/512.
3880263	Apr, 1975	Ewald et al.	188/112.

Other Refs:
Primary Examiner: Kazenske, Edward R.
Assistant Examiner:
Attorney: Leydig, Voit, Osann, Mayer & Holt, Ltd.