Hydraulic and earth engineering – Subterranean or submarine pipe or cable laying – retrieving,... – Repair – replacement – or improvement
Patent
1980-02-08
1981-10-27
Purser, Ernest R.
Hydraulic and earth engineering
Subterranean or submarine pipe or cable laying, retrieving,...
Repair, replacement, or improvement
43124, 175 22, 405 43, E03F 306
Patent
active
042970555
ABSTRACT:
A process of installing a pipe system under an existing building constructed upon a concrete slab or other foundation not permitting access beneath the ground floor, for the purpose of periodic introduction of insecticide to control or eradicate subterranean termites or other such pests, comprising forming a substantially horizontal hole or accessway beneath the building slab or foundation, inserting a pipe through the formed hole, the pipe being made of a plastic or flexible material containing apertures for discharging the insecticide, the pipe being inserted in the hole or accessway by capping one end of the pipe and inserting a solid push rod into the pipe until the push rod contacts the capped end whereby the pipe can be pushed through the hole or accessway without lateral or vertical displacement.
REFERENCES:
patent: 1894446 (1933-01-01), McKenny
patent: 3330120 (1967-07-01), Atkinson
patent: 3422626 (1969-01-01), Hanrahan
patent: 3602248 (1971-08-01), Peacock
patent: 3774556 (1973-11-01), Poll
"Jack Pipeline Under River Bed", Engr. News Record, vol. 144, Issue 1, Jan. 5, 1950, p. 44.
Jacobson Harvey B.
Purser Ernest R.
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