Apparatus for prevention of freezing of soil and crop residue to knife applying liquid anhydrous ammonia to the ground
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United States of America Patent
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Apr 28, 2009
Grant Date -
N/A
app pub date -
Apr 6, 2008
filing date -
Apr 6, 2007
priority date (Note) -
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status (Latency Note)
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Abstract
A plastic discharge tube extends through a swaged cap bore through a metal swaged cap. A conical cap portion of the metal swaged cap is pressed into a retainer ring passage through a metal retainer ring. A swage surface in the retainer ring passage swages the conical portion of the metal swaged cap thereby fixing the position of the plastic discharge tube in the swaged cap bore and locking the swaged cap in the retainer ring passage. The plastic discharge tube is inserted into a steel injection tube fixed to a soil cutting knife. A ring bottom positioning surface contacts and injection tube upper end of the injection tube. A delivery hose is telescopically received on a plastic discharge tube retainer assembly and the steel injection tube. Hose clamps clamp the delivery hose to the retainer assembly and the injection tube.
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