Capsule with isolated chemical agent containing cavities

Details Capsule with isolated chemical agent containing cavities Capsule with isolated chemical agent containing cavities

1994-03-09

1996-04-09

Melius, Terry Lee

Plant husbandry

Injection, method or apparatus

A01G 2900

Patent

active

055050212

ABSTRACT:
A capsule for insertion into a bore includes a plastic container having a shank portion with one internal cavity having at least one end opening. The one internal cavity contains one chemical agent. A head element is integrally formed with the shank portion. A plastic plug sealingly closes the internal cavity. The plug is insertable into an end opening of the one internal cavity so as to provide a tight fit between the plug and the end opening. Another internal cavity is defined so as to be isolated from the one internal cavity. The other internal cavity is partially defined by a thin membrane forming a closed end of the plug and contains another chemical agent. A spear, integrally formed with the plastic container, pierces the thin membrane as an impact force applied to the head element moves the head element towards the plastic plug so that communication between the internal cavities is provided. Consequently, a gas, generated by a combination of the chemical agents, diffuses through the walls of the capsule surrounding the cavities.

REFERENCES:
patent: 1999458 (1935-04-01), Hollister
patent: 2970404 (1961-02-01), Beaufils et al.
patent: 3367065 (1968-02-01), Du Val Cravens
patent: 3706161 (1972-12-01), Jenson
patent: 4308689 (1982-01-01), Jenson et al.
patent: 4342176 (1982-08-01), Wolfe
patent: 4344250 (1982-08-01), Fahlstrom
patent: 4905410 (1990-03-01), Merving
patent: 5341594 (1994-08-01), Merving

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