Lock unit for a trailer pintle

FIG. 1 is an exploded perspective view of a lock unit for a trailer pintle showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is rear elevational view thereof;

FIG. 4 is a right side elevational view thereof, the left side elevational view being a mirror image thereof;

FIG. 5 is a top plan view thereof, the bottom plan view being a mirror image thereof; and,

FIG. 6 is a perspective view thereof, with article shown in its environmental use.

The broken lines environment is for illustrative purpose only and forms no part of the claimed design. FIGS. 2-6 disclose the article in an assembled condition.