Double safety latch for trailer doors

Details Double safety latch for trailer doors Double safety latch for trailer doors

1977-02-22

1979-03-06

Wolfe, Robert L.

Locks

Operating mechanism

Key

70427, E05B 904

Patent

active

041423909

ABSTRACT:
A double safety latch includes a housing with first and second lock means carried thereby. The second lock means is mounted in axial alignment behind the first lock means in the housing with restraining means engaging the second lock means to restrain actuation thereof. Closure or blocking means are associated with the first lock means for blocking access to the second lock means and the restraining means. Actuating means is provided to engage and remove the blocking means from the first lock means for then accommodating access of the actuating means to the restraining means to disengage the restraining means from said second lock means to enable said actuating means to unlock the second lock means.

REFERENCES:
patent: 1339075 (1920-05-01), Toelle
patent: 1917973 (1933-07-01), Hughes
patent: 1919647 (1933-07-01), Belknap
patent: 3477261 (1969-11-01), Siana
patent: 3871284 (1975-03-01), Krise

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