Pick locking device including a clamp element and a retaining pin
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United States of America Patent
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Mar 17, 2009
Grant Date -
Jan 10, 2008
app pub date -
Dec 28, 2004
filing date -
Dec 29, 2003
priority date (Note) -
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status (Latency Note)
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Abstract
A pick locking device for a plow pick that includes a pick shank inserted into a receptor box of a pick holder. The locking device may include a retaining pin and a deformable clamp element. The retaining pin may be forced through an opening on the pick holder into a locking groove extending in a shank insert direction along one side face of the shank. The clamp element may secure the retaining pin in a locked position, and may include a first leg and a second leg positioned at an angle to each other. The first leg may be inserted into a retainer in the pick shank and the second leg may be inserted into a locking recess on the retaining pin. The second leg may include a trunnion protruding from the first leg and an annular enclosed opening that extends to a rear of the first leg.
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