Tree treatment capsule with radially expanding shank portion
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United States of America Patent
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-
Jan 23, 1996
Issued Date -
N/A
app pub date -
Jul 30, 1990
filing date -
Apr 24, 1987
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A tree treatment capsule is disclosed as including a plastic container having a shank with an internal cavity for containing therein a chemical agent and a head integrally formed with the shank portion. A plastic plug is provided to sealingly close the cavity. The shank has a plurality of slots which are formed in the exterior surface thereof and extend lengthwise of the shank. The slots allow the shank to be broken so that when an impact force is applied to the head to move the head towards the plastic plug, the plastic plug expands and breaks the shank along the slots into strips to form passages between the strips. The passages allow the chemical agent to pass from the cavity of the capsule through the passages and mix with sap of the tree.
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