Automatic safety brake actuation tongue for towed vehicles

Details Automatic safety brake actuation tongue for towed vehicles Automatic safety brake actuation tongue for towed vehicles

1982-03-15

1984-06-12

Reger, Duane A.

Brakes

Operators

Automatic

B60T 720

Patent

active

044536208

ABSTRACT:
A tongue is provided for a towed wagon having conventional variable hydraulic and emergency brake systems. The tongue has three telescopically disposed tubes with a clevis on the outer tube for connection to a drawbar. A slide member is moved in said outer tube by a connected drawbar. The slide member has a cam which engages a spring loaded plunger which engages a latch on the intermediate tube to lock the outer and intermediate tubes together. The connected drawbar also moves the outer and intermediate tubes with respect to each other before they are locked together. This relative movement causes an emergency brake control means to be released, and moves to its breaking position only when the drawbar is disconnected. A surge brake mechanism is interconnected between the intermediate and inner tubes to operate the variable hydraulic brake system of the vehicle as the inner tube moves forwardly over the intermediate tube.

REFERENCES:
patent: 2916107 (1959-12-01), Huentelman
patent: 3077248 (1963-02-01), Wayt

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