Tree treatment capsule

A method of applying treatment substance to the interior of a porous element the method comprising:

• providing a treatment substance capsule including a container having a releasably closed end, an internal cavity, treatment substance disposed in the internal cavity, and a plug fitted in the container to retain the treatment substance in the internal cavity;
• forming at least one bore into the interior of the element;
• inserting the capsule into the bore;
• and
• applying driving force to the plug to move the plug into the cavity, causing the releasably closed end of the container to open, thereby releasing treatment substance from the internal cavity by permitting it to pass from the internal cavity and into the bore;
• wherein the method further involves
• a) inserting the capsule with the closed end and a first shank portion into the bore, acting as a guide;
• b) driving the capsule with the plug further into the bore so that a second shank portion of the container fits snugly in the bore;
• the second shank portion at least at an inner surface having an outwardly diverging, conical shape, and at an outer surface, separated from an outer stop flange, having a first circumferential beveled edge serving as a transition to an outer increased diameter section, so that the container past the first circumferential beveled edge has an outer diameter exceeding the diameter of the bore;
• and
• c) driving the capsule with the plug further into the bore so that the outer increased diameter section enters the bore, thereby causing the outer increased diameter section and the outer stop flange to be rotated inwardly towards the plug to seal any gap there between;
• and
• wherein a), b), and c) are performed in sequential order.

A capsule for insertion into a bore of a porous element to apply treatment substance to the interior of the element, the capsule comprising:

• a container with
• at least one internal cavity for receiving treatment substance therein,
• an insertion end, and
• an end with a stop flange;
• and
• a plug received in and fixed to the container through a common interconnecting land;
• wherein the container includes
• a first shank portion extending from the insertion end, the first shank portion having a cylindrical shape, and
• a second shank portion extending from the first shank portion towards the stop flange;
• wherein at least an inner surface of the second shank portion has an outwardly diverging, conical shape, such that a tapered gap is provided between the second shank portion and the plug;
• and
• wherein an outer surface of the second shank portion has a first circumferential beveled edge, which is located between the stop flange and the first shank portion.