Lock device for hollow stem augers
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United States of America Patent
Stats
-
Jul 4, 1989
Grant Date -
N/A
app pub date -
Sep 29, 1988
filing date -
Sep 29, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A locking device or button for hollow stem auger couplings including an outer body section having an internal bore, a locking pin assembly mounted within the bore, and cooperating cam structure for moving the pin assembly a predetermined distance between locked and unlocked positions. Seal means at opposite ends of the bore keeps water and dirt out of the bore and protects the cam structure.
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