Trailer jack lock
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 8, 2009
Grant Date -
N/A
app pub date -
Sep 21, 2006
filing date -
Sep 21, 2006
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A kit is described that modifies a standard screw jack for a trailer hitch, by introducing a safety lock mechanism. The modified screw jack will be inoperative until the safety lock mechanism is opened. In the inoperative position, the screw jack cannot be turned to lift or lower the trailer hitch. The crank for turning the screw jack will be freewheeling or frozen. Turning a key in a lock keyway will release the safety lock mechanism, thus putting the crank into rotational engagement with the screw jack.
First Claim
Family
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