Tree treatment capsule with volumes for sequentially discharging fluid

Abstract

A tree treatment capsule is inserted into a bore formed in a tree and has several volumes from which various fluids used to treat the tree are sequentially discharged. The capsule includes a plastic container having a shank portion, with a first internal cavity having an end opening and containing a first chemical agent, and a head element integrally formed with the shank portion at a location remote from the end opening. The shank portion includes a circumferential recess formed therein, and a plastic plug is provided for sealingly closing the internal cavity. The plastic plug has an outer external diameter which is slightly smaller than the diameter of the end opening, and has another internal cavity formed therein containing a second chemical agent. The plug is partially insertable into the end opening so that a tight fit between the plug and the end opening is provided. The shank portion is broken to release the first chemical agent immediately as an impact force is applied to the head element and moves the head element towards the plastic plug. The plastic plug has another internal cavity formed therein containing a second chemical agent. The end plug is gradually broken down to release the second chemical agent after the first chemical agent has been released.

Dependencies are inferred from the claim text.