Locking unit for immobilizing vehicles

Details Locking unit for immobilizing vehicles Locking unit for immobilizing vehicles

1975-08-27

1977-04-05

Britts, Ramon S.

Locks

Portable

Clamps

70202, 70210, 70231, 70237, E05B 1700

Patent

active

040154556

ABSTRACT:
A locking unit for immobilizing road vehicles to prevent their unauthorized removal comprises a sealed body which houses a movable locking member projecting from the housing and adapted for connection with a brake or clutch operating foot pedal or hand lever or with the control valve of an air-powered parking brake system. The sealed body also houses a key-released lock of the rotary barrel type having its plunger movable into locking engagement with the locking member manually without use of the key. The locking member may be a ratchet wheel engageable by a pawl which is pushed into engagement by the lock plunger acting on a spring. Further springs ensure the pawl being held clear of the wheel when the lock plunger is withdrawn. A modified form of the unit has a fixed jaw and a movable jaw by which the unit can be clamped around the stem of the draw-pin of a trailer vehicle and locked without using the key, thereby to prevent the hitch of a tractor from being coupled thereto.

REFERENCES:
patent: 1281705 (1918-10-01), Taylor
patent: 1387156 (1921-08-01), Igo et al.
patent: 1447374 (1923-03-01), Bowzer
patent: 1717602 (1929-06-01), Goodspeed
patent: 1764383 (1930-06-01), Bezek
patent: 3269159 (1966-08-01), Young

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