Self locking trailer hitch

Details Self locking trailer hitch Self locking trailer hitch

1998-03-05

1999-12-07

Mai, Lanna

Land vehicles

Wheeled

Articulated vehicle

280510, 280511, B60D 101

Patent

active

059970251

ABSTRACT:
A trailer hitch (10) including a pair of clamping jaws (12) and a retractable jaw locking member in the form of a wedge block (84) that is spring biased to move between the jaws (12) in order to lock the jaws in a closed position about a hitch ball. A latch mechanism (94) secures the wedge block (84) in its retracted position away from the jaws (12). A plunger dog (46) is pivoted by a handle mechanism (28) to reposition wedge block (84) and a safety pin mechanism (64) is provided to secure the plunger dog (46) in position and thereby secure wedge block (84) in position.

REFERENCES:
patent: 1335211 (1920-03-01), Walker
patent: 2035486 (1936-03-01), Larson
patent: 2347033 (1944-04-01), Daton
patent: 2475878 (1949-07-01), Clark et al.
patent: 2676034 (1954-04-01), Tracey
patent: 3046038 (1962-07-01), Hollis
patent: 3433503 (1969-03-01), Davis
patent: 3650546 (1972-03-01), Koenig
patent: 3796443 (1974-03-01), Crutchfield
patent: 4042256 (1977-08-01), Lepp
patent: 4792151 (1988-12-01), Feld
patent: 5205666 (1993-04-01), Hollis

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