Methods and apparatus for locking a trailer high to a receiver

Details Methods and apparatus for locking a trailer high to a receiver Methods and apparatus for locking a trailer high to a receiver

1996-04-19

1998-03-24

Ellis, Christopher P.

Land vehicles

Wheeled

Articulated vehicle

2804915, 280495, B60D 160

Patent

active

057304564

ABSTRACT:
A trailer hitch includes a hollow tube insertable into a hollow receiver of a towing vehicle. Mounted inside of the tube are a pair of locking bolts and a key actuated locking cylinder. The locking bolts are spring biased outwardly through aligned holes in the tube and receiver for locking the trailer hitch to the receiver. The locking bolts are restrained against movement to an unlocking state by an arm which is connected to the key-actuated tumbler cylinder disposed within the tube. A key can be inserted into the tumbler cylinder and rotated to move the arm to an unlocking state, permitting the locking bolts to be pushed manually inwardly to an unlocking state.

REFERENCES:
patent: 3514980 (1970-06-01), Doyle
patent: 3782761 (1974-01-01), Cardin, Sr.
patent: 5000067 (1991-03-01), Kolbusz et al.
patent: 5242186 (1993-09-01), Pettersson

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