Method of installing underground pipe
US4297055A · kind A · utility
Inventor
Key dates
| Filing date | Feb 8, 1980 |
| Grant date | Oct 27, 1981 |
| Priority date | — |
| Expiry date | Feb 8, 2000 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01M2200/011
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.