Lock for trailer hitch

Details Lock for trailer hitch Lock for trailer hitch

1990-02-09

1991-03-19

Smith, James G.

Tools

Wrench, screwdriver, or driver therefor

Having work engaging and force exerting portion inserted...

70258, 280507, B25B 1348

Patent

active

050000675

ABSTRACT:
For a two-piece trailer hitch, a secure locking device is formed with a U-shaped member and a compatible bar for the U-shaped member. The U-shaped member has a female threaded end and female locking end. The bar has a male threaded end and a female key receiving end. A holding pin may provide additional strength for holding the bar in the U-shaped member. A key removes the bar from or attaches the bar to the U-shaped member.

REFERENCES:
patent: 3391555 (1968-07-01), Mamo
patent: 3884055 (1975-05-01), Vuillemot
patent: 4480513 (1984-11-01), McCauley et al.
patent: 4542914 (1985-09-01), Shropshire
patent: 4571964 (1986-02-01), Bratzler
patent: 4686874 (1987-08-01), McCauley et al.
patent: 4711106 (1987-12-01), Johnson
patent: 4730841 (1988-03-01), Ponder

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