Manually actuated hydraulic brake device for use with a vehicle

Details Manually actuated hydraulic brake device for use with a vehicle Manually actuated hydraulic brake device for use with a vehicle

1993-06-30

1995-02-21

Oberleitner, Robert J.

Brakes

Operators

Automatic

188353, 70179, 70180, 137383, 251114, B60T 720, B60T 1100

Patent

active

053907680

ABSTRACT:
The present invention involves a hydraulic device for immobilizing the wheel of a stationary trailer. The locking brake is spliced into a brake line of a trailer carrying a surge brake system and allows an individual to manually activate the trailer brake when the trailer is stopped. The brake device includes a housing block with a cylindrical bore and a spring biased piston. A shank is connected to the piston and provides a manual handle for shifting the position between an inner and outer position. In the outer position, brake fluid may flow from the brake system actuating device. In its inner position, brake fluid is prevented from flowing from the actuating device and is pressurized to lock each brake. The housing block also includes a pivotally secured lock pin which engages a hole on the shank to secure the shank to the housing block. In this manner, the brakes of the trailer may be secured in a locked position.

REFERENCES:
patent: 2659242 (1953-11-01), Blanning
patent: 2704585 (1955-03-01), Stromberg
patent: 2869581 (1959-01-01), Perez
patent: 3505815 (1970-04-01), Wherry
patent: 4633686 (1987-01-01), Carr
patent: 4721192 (1988-01-01), Cano et al.
patent: 4881615 (1989-11-01), Conway
patent: 4934492 (1990-06-01), Hayes-Sheen
patent: 4951776 (1990-08-01), Jeter

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