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Publication numberUS2842892 A
Publication typeGrant
Publication dateJul 15, 1958
Filing dateMay 19, 1955
Priority dateMay 19, 1955
Publication numberUS 2842892 A, US 2842892A, US-A-2842892, US2842892 A, US2842892A
InventorsAldridge George L, Chambers Lee E
Original AssigneeAldridge George L, Chambers Lee E
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Termite control
US 2842892 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

Y July 15, 1958 G. L ALDRiDGE :a1-m.v

'PERMITE CONTROL Fileauay 19,1955

` INVENToRs @eo/"ge .A/dr/'dge d' Lee E. Chambers Attorney TERMITE CoNTRoL George L. Aldridge and Lee E. Chambers, Virginia Beach, Va.

The present invention relates generally to structures and methods for permanently maintaining structures free of termites.

There exists a frequently employed type of dwelling construction in which a slab of concrete is laid on the ground, as a foundation for the dwelling, the slab being usually provided with footings at and about its edges. Termites may become established under the slab, and when cracks or openings develop in the slab these find their way into the dwelling. There is then no practical way of exterminating the termite colonies because there is no access under the slab.

In accordance with the present invention a plurality of liquid conduits is laid in a suitable pattern immediately under the slab, prior to laying the latter. The conduits have access exteriorly of the dwelling, so that lluid or gas suitable for the extermination of termites may be forced into the conduits. The conduits are also provided with a large number of openings, at spaced points along the conduits under the slab, so that the fluid or gas may saturate the ground under the slab.

Periodical utilization of the conduit structure to force suitable chemicals into the ground under the slab assures that no termite colonies may become established, or if they do, that they may be readily exterminated.

The structure and method is relatively inexpensive and easy to apply and utilize, and provides excellent protection against termite infestation, at low initial cost, and for little maintenance cost.

It is, accordingly, a broad object of the present invention to provide a novel system for preventing termite infestation in dwellings, and to terminate such infestation should it occur.

lt is a more specific object of the invention to provide a conduit system under a slab on which is constructed a dwelling, for conducting iiuid fatal to termites to a large number of points under the slab, from which the fluid may seep throughout the slab area, and saturate the ground thereunder.

The above and still further features, objects, and advantages of the present invention will become apparent upon consideration of the following detailed description of a specific embodiment of the invention, especially when taken in conjunction with the accompanying drawings, wherein:

Figure 1 is a View in plan of a layout of conduit under a dwelling, taken on the line 1-1 of Figure 2;

Figure 2 is a view in section taken on the line 2 2 of Figure l;

Figure 3 is a view, partly in section, of a length duit such as employed in the system of Figure l;

Figure 4 is a View in section taken on the line 4--4 of Figure 3; and

Figure 5 is an enlarged view in section showing a detail of the system.

In Figure 1 of the accompanying drawings, the reference numerals 1, 2, 3, 4 denote, respectively, crosssections, viewed in plan, taken through footings of a of con- United States Patnf ICC concrete slab construction building. A concrete slab 5 rests on the footings 1, 2, 3, 4, adjacent its edges, andv overlies elsewhere the ground 6.

Immediately under the slab 5 may be provided one or more layers 7 of moisture sealing material, of any desired type, and under the latter are laid one or more pipe assemblies, as 8, 9, 10, which are embedded in crushed rock, gravel, or coarse sand. The piping should be placed not more than l below the concrete and should lie horizontal.

Each pipe assembly includes manifolds 11, 12., which communicate exteriorly of the footings, as Z, via galvanzed or other non-corrosive female connections, 13, of the same size as the manifold, installed at charging points flush with the outside of the wall 2. These connections are plugged with a non-corrosive screw plug after the system has been charged, and all piping units are preferably charged simultaneously at the time of installation, and each three to five years thereafter. The latter timedepends on conditions individual to the specific situation, i. e. soil condition, chemical employed, evidence of infestation, and the like.

The units, as 8, taken for example only, generally include a pair of headers or manifolds 15, 16, which lie adjacent the footings, and are joined by laterals, as 17, 18, 19 In practice the separate units may each provide coverage for 280 to 40G square feet of area, which requires charging with a pump pumping 18 G. P. M. at 40 p. s. i. A pump of this character will provide adequate iluid to a 280 ft. unit, at full pressure, in l0 seconds, and to a 400 ft. unit in l5 seconds, approximately.

In order to insure adequate protection at the footings, the piping may extend vertically down, about and adjacent to all the footings, as at 20, for a depth almost equal to that of the footings, and all inside walls which extend down into the soil may be similarly treated, if the extension is greater than one foot.

The tubing employed is -1/2" copper tubing, but if desired the manifolds may be larger. The use of copper assures that the termite control system of the present invention will last as long as the building it is designed to protect.

To provide egress from the tubing for the protective liquid the tubing is drilled with 5%),2 holes 21 on 24 centers, so that one hole exists for each 8" of tubing. Of each set of three holes, one opens downwardly and the remaining two in opposite directions laterally (see Figure 3), and this arrangement is generally followed in respect to vertical tubes 20, the manifolds 66, however, being undrilled, so that pressure may be applied to the laterals or branches 17, 18, 19,

While we have described and illustrated one specic embodiment of the present invention it will be clear that variations of the specific details of construction may be resorted to Without departing from the true spirit of the invention as dened in the appended claims.

What we claim is:

l. In the combination including a concrete slab adapted to support a building structure and a layer of relatively coarse material disposed on the ground surface portion beneath said slab and supporting said slab above said ground surface portion, said coarse material and ground surface portion being permeable to liquid insecticides, the improvement comprising a plurality of tubes provided with a header, said tubes having downward extensions depending therefrom, said header, tubes and extensions of said tubes being arranged and adapted to distribute liquid insecticide material through said coarse material and through the ground surface portion immediately under and supporting said coarse material.

2. The combination according to claim 1, further com- 3 prising foundation walls supporting said slab, said extensions being arranged adjacent and in spaced relation to the inner periphery of said foundation walls.

3. The combination in accordance with claim l, wherein said tubes are provided with apertures and are disposed a maximum of two inches below said slab, wherein some of said apertures are directed downwardly and other of said apertures are directed laterally in both directions, wherein adjacent ones of said Yapertures are separated by not more than two feet, wherein said tubes are parallel and wherein the spacing between said tubes, the diameters of said pipes and the size of said apertures when taken in conjunction with the pressure under which the liquid is applied are such that the entire area encompassed by said tubes and immediately under said slab is saturated with liquid.

4. The combination according to claim 3, wherein the spacing between said tubes is two feet, and the diameter of said tubes is one-half inch.

References Cited in the Ile of this patent UNITED STATES PATENTS 299,425 Schillinger May 27, 1884 728,088 Dillon May l2, 1903 1,422,831 Camp July 18, 1922 1,603,110 Horten Oct. 12, 1926 1,646,113 Lanza Oct. 18, 1927 5 1,795,488 Hill Mar. 10, 1931 2,059,095 Fellman Oct. 27, 1936 2,246,731 Hill June 24, 1941 FOREIGN PATENTS 10 255,019 Switzerland Jan. 3, 1949 OTHER REFERENCES C. A. Kofoid, A. C. Horner, M. Randall, W. B. Herms, and E. E. Bower Termites and Termite Control, page 421, published 1946 by University of California Press, Berkeley, Calif.

Termites and Termite Control, by S. F. Light, A. C. Horner, Merle Randall, W. B. Herms, and E. E. Bowe, page 505, published 1946 by University of Calif. Press, Berkeley, Calif.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US299425 *Apr 24, 1884May 27, 1884 John j
US728088 *Jun 21, 1902May 12, 1903John Lloyd DillonFlower-bed.
US1422831 *Aug 9, 1920Jul 18, 1922Camp William WyattVermin exterminator
US1603110 *Oct 12, 1925Oct 12, 1926Alphons HortenField-watering plant
US1646113 *Mar 16, 1926Oct 18, 1927Luigi LanzaConstruction of buildings
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US2059095 *Jun 24, 1932Oct 27, 1936Bruce E L CoTermite control
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Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2915848 *Jun 23, 1958Dec 8, 1959Griffin James HBuilt in insecticide distribution system
US2952938 *Feb 4, 1957Sep 20, 1960Abrams MiltonCombined vapor, moisture and insect protection of buildings
US3151746 *Sep 24, 1962Oct 6, 1964Reustle Frank AInsecticide dispensing apparatus
US3209485 *Sep 12, 1963Oct 5, 1965Griffin James HBuilt-in insecticide distribution system
US3330062 *Aug 24, 1964Jul 11, 1967Carter Roy DApparatus for insect control
US3602248 *Oct 8, 1969Aug 31, 1971Peacock Richard CTermite control system
US3876372 *Aug 30, 1973Apr 8, 1975Uchelen Hendrikus VanMethod of preventing the attack of parts of synthetic and natural organic materials present in the soil
US4625474 *Apr 2, 1984Dec 2, 1986Peacock Richard CFor a pier-type support structure disposed inwardly of the perimeter
US4688349 *Sep 30, 1985Aug 25, 1987Renth Lawrence BApparatus for insecticide application
US4800672 *May 21, 1987Jan 31, 1989Jackson John CCentralized fumigation system for exterminating insects in a building
US4944110 *Sep 8, 1988Jul 31, 1990Extermination Systems, Inc.Integrated pest control system
US5007197 *Oct 4, 1989Apr 16, 1991Barbett Betty GTermite control system
US5027546 *Apr 13, 1989Jul 2, 1991Tallon Joseph CNon-toxic method of exterminating insects
US5347749 *Feb 24, 1993Sep 20, 1994Pestban Pest Control Of Florida, Inc.Termiticide delivery system
US5359806 *May 24, 1993Nov 1, 1994Albany International Corp.Rechargeable termite barrier for buildings
US5378086 *Sep 15, 1993Jan 3, 1995Campbell, Jr.; Albert E.Systems to exterminate and control subterranean termites and other subterranean pests
US5394642 *Oct 5, 1993Mar 7, 1995Takaoka; ToshioRetrofittable insecticide distribution system
US5678362 *Apr 22, 1996Oct 21, 1997Owens-Corning Fiberglas Technology, Inc.Termite control device and method
US5802779 *May 6, 1997Sep 8, 1998Owens Corning Fiberglas Technology, Inc.Vermin control method
US5960584 *Jul 22, 1998Oct 5, 1999Aesch, Jr.; Harold W.Physical termite barrier and termiticide delivery system and method
US6047498 *Aug 15, 1997Apr 11, 2000Termguard Pty Ltd.Termite-proofing system
US6070357 *Oct 19, 1998Jun 6, 2000Hartill; Debra L.Termite control system
US6088950 *Mar 30, 1998Jul 18, 2000Jones; Ronald L.Structural pest control system
US6397518Dec 15, 1999Jun 4, 2002Termguard Pty Ltd.Termite-proofing system
US6446383Jun 15, 2000Sep 10, 2002Tom HoshallSubsurface pesticide injection and fluid extraction system
US6463694Oct 6, 2000Oct 15, 2002Edward MancietClosed pesticide delivery and recovery system
US6564504Jul 30, 2002May 20, 2003Tom HoshallSubsurface pesticide injection and fluid extraction system
US6782655May 19, 2003Aug 31, 2004Tom HoshallSubsurface pesticide injection and fluid extraction system
US6877272Apr 10, 2003Apr 12, 2005Tom HoshallMethod of applying pesticide
US7044401Mar 5, 2001May 16, 2006Advanced Pest Control Systems, Inc.Integrated pest prevention system
US7086197 *Aug 5, 2004Aug 8, 2006David GronewaldMethod and apparatus for dispensing termiticide
US7451568 *Mar 6, 2008Nov 18, 2008Tom HoshallSubsurface insect detection and pesticide injection system
US20100024280 *Aug 3, 2009Feb 4, 2010Subterranean Termite Solutions, LLCTermite Control System and Method
DE2342349A1 *Aug 22, 1973Mar 21, 1974Philips NvVerfahren und vorrichtung zur bekaempfung des angriffes sich im boden befindender teile aus synthetischen und natuerlichen organischen stoffen
Classifications
U.S. Classification52/169.5, 52/517, 52/101, 43/124, 52/169.14
International ClassificationA01M1/24, A01M1/00
Cooperative ClassificationA01M2200/011, A01M1/245
European ClassificationA01M1/24B