Door locking system

Details Door locking system Door locking system

1978-12-19

1981-05-26

Wolfe, Robert L.

Locks

Hasp

Key lock

70 34, 70165, 70231, 70232, E05B 6548

Patent

active

042690480

ABSTRACT:
A door lock system for the rear doors of the trailer of a tractor-trailer rig is disclosed. The lock system includes a locking bar fixedly secured to one door and attachably secured to a second door. A pin projects from the second door so that it may pass through an opening in the locking bar. A pin cover locks over the pin for securing the bar to the second door. In a preferred embodiment the pin is formed identical to a conventional trailer king pin or coupling pin so that the pin cover may be used either to lock the trailer doors or as a theft prevention device covering the king pin to prevent unauthorized coupling of unattended trailers.

REFERENCES:
patent: 3995459 (1976-12-01), Weeks
patent: 4132093 (1979-01-01), McDorman

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