Patent US3909975A successfully refreshed from Google Patents.
US3909975A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of soil treatment
Assignee: Individual
•
Filing: 1973-03-26
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Granted: 1975-10-07
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Expires: 1993-03-26
Abstract
Abstract A network of interconnected rigid or collapsible perforated pipes are installed below ground, such as before the erection of a wood containing structure, and an inlet pipe extends from the network to an accessible point. A solution or emulsion of a termicide is pumped under pressure through the inlet pipes and pipe network to impregnate the ground underlying or around the structure, when required, to inhibit termite growth and destroy any termite colonies. As an alternative, in slab on ground construction, the slab is provided at accessible points with suitably spaced openings providing communication with the ground, the openings being closed by removable plugs.
Inventors
- 👤 Mario J Basile
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:57
CPC Classifications
A; A01; A01M; A01M17/00; A01M17/002; A01M1/00; A01M1/24; A01M1/245; A01M2200/00; A01M2200/01; A01M2200/011; Y; Y10; Y10T; Y10T137/00; Y10T137/6851; Y10T137/6855; Y10T137/6881
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
118 words
The method of treating soil adjacent a structure for the destruction and prevention of termite infestation comprising positioning in such soil adjacent such structure a network of pipes, providing openings in said pipes, feeding into said pipe network a liquid termicidal composition, periodically applying a predetermined pressure to said liquid, forming the pipes of a pliable material in normally collapsed condition, expanding said pipes in response to the pressure applied to said liquid and forcing liquid through said openings of the expanded pipe into said surrounding soil to impregnate the soil with said liquid composition, whereby said pipes collapse when no pressure is applied to the fluid and expand when said predetermined pressures is applied to the fluid.
Claim 2
Independent Claim
118 words
The method of treating soil adjacent a structure for the destruction and prevention of termite infestation comprising positioning in such soil adjacent such structure a network of pipes, providing openings in said pipes, feeding into said pipe network a liquid termicidal composition, periodically applying a predetermined pressure to said liquid, forming the pipes of a pliable material in normally collapsed condition, expanding said pipes in response to the pressure applied to said liquid and forcing liquid through said openings of the expanded pipe into said surrounding soil to impregnate the soil with said liquid composition, whereby said pipes collapse when no pressure is applied to the fluid and expand when said predetermined pressures is applied to the fluid.
Claim 3
Dependent Claim
18 words
The method of claim 1 further including providing tunnels in said soil in which said pipes are placed.
Claim 4
Dependent Claim
16 words
The method of claim 1 further including position said pipes at different levels in said soil.
Claim 5
Dependent Claim
32 words
The method of claim 1 further including placing said pipes at at least two levels in a trench with each level being generally parallel to each other, and feeding each level simultaneously.
Claim 6
Dependent Claim
35 words
The method of claim 4 further including making the openings in said pipe larger and increasing the number of such openings as the distance of the pipes increases from the source of the liquid composition.
Claim 7
Dependent Claim
130 words
A pipe system for practicing the method of claim 1 including a network of intercommunicating pipes located in the soil adjacent said structure, said pipe being normally collapsible and adapted to be expandable and having apertures along their length, a feed pipe extending vertically from said network to at least the level of said soil for receiving the input of liquid composition, said feed pipe having an inlet at its outer end and a renewable cover closing said opening substantially at the level of said soil wherein said pipe openings may be covered by said soil, said pipes expanding in response to the pressurized liquid termicidal composition being received in said pipe network wherein said pipes expand during application of said pressurized liquid and collaPse when said pressure is removed.
Claim 8
Dependent Claim
40 words
The system of claim 6 wherein said apertures are generally crossed slits, so that the liquid is forced through said slits and the slits close when the pressurized liquid is removed and the pipes collapse to prevent ingress of soil.
Claim 9
Dependent Claim
18 words
The system of claim 6 wherein the pipes at different levels are each connected to the feed pipe.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-10-06 | 1979-04-07 | 1979-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-06 | 1983-04-07 | 1983-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-06 | 1987-04-07 | 1987-10-07 | $7700.00 | Window Closed / Lapsed |