US4823520A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Granular termite barrier
Assignee: TPE ASSOCIATES LLC
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Filing: 1987-06-17
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Granted: 1989-04-25
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Expires: 2007-06-17
Abstract
Abstract A method of protecting a foundation wall from termites in which a barrier of sand of granule sizes which bar the passage of termites is placed contiguous to the wall. An impermeable structural barrier is embedded in the sand with a projecting upper edge. A concrete cap is poured atop the sand the cover it and encapsulate the upper edge of the barrier.
Inventors
- 👤 Walter Ebeling
- 👤 Charles F. Forbes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:36
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/62; E04B1/72
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
111 words
The method of protecting the foundation of a structure from termite incursion, comprising: applying adjacent to and in contiguous contact with said foundation a depth of sand having particle sizes and interstitial sapces such that a termite cannot move the particles aside or pass through said spaces, said depth of sand having an upper surface, embedding an impermeable structural barrier in said sand with an edge portion rising above said upper surface, said barrier confining said sand to contact with said foundation, and pouring concrete atop said upper surface and completely over said upper edge, whereby to form a solid barrier against the passage of insects along the said upper surface.
Claim 2
Independent Claim
111 words
The method of protecting the foundation of a structure from termite incursion, comprising: applying adjacent to and in contiguous contact with said foundation a depth of sand having particle sizes and interstitial sapces such that a termite cannot move the particles aside or pass through said spaces, said depth of sand having an upper surface, embedding an impermeable structural barrier in said sand with an edge portion rising above said upper surface, said barrier confining said sand to contact with said foundation, and pouring concrete atop said upper surface and completely over said upper edge, whereby to form a solid barrier against the passage of insects along the said upper surface.
Claim 3
Dependent Claim
15 words
A method according to claim 1 in which said concrete is poured as a slab.
Claim 4
Dependent Claim
40 words
A method according to claim 1 in which a layer of said sand is also laid atop the earth on the other side of said foundation in contact with both the earth and with the foundation on said other side.
Claim 5
Dependent Claim
32 words
A method according to claim 3 in which a fluid impermeable vapor barrier is laid between the sand and the earth on said other side of the foundation before pouring said concrete.
Claim 6
Dependent Claim
20 words
A method according to claim 3 in which said sand is applied on said other side by fluid transport means.
Claim 7
Dependent Claim
91 words
A termite-protected foundation wall having a trench contiguous thereto, and in said trench layer of sand having particle sizes and interstitial spaces such that a termite cannot move the particles aside or pass through said spaces, said sand bearing against and contacting said foundation wall and having an upper surface, an impermeable structural barrier confining said sand to make said contact with said foundation wall, said barrier having an edge portion rising above said upper surface and a concrete cap encapsulating said edge portion of said barrier and capping said sand.
Claim 8
Dependent Claim
91 words
A termite-protected foundation wall having a trench contiguous thereto, and in said trench layer of sand having particle sizes and interstitial spaces such that a termite cannot move the particles aside or pass through said spaces, said sand bearing against and contacting said foundation wall and having an upper surface, an impermeable structural barrier confining said sand to make said contact with said foundation wall, said barrier having an edge portion rising above said upper surface and a concrete cap encapsulating said edge portion of said barrier and capping said sand.
Claim 9
Dependent Claim
24 words
A wall according to claim 6 having on its other side a layer of such sand bearing against it and extending away from it.
Claim 10
Dependent Claim
16 words
A wall according to claim 7 in which said second mentioned sand lays atop the ground.
Claim 11
Dependent Claim
21 words
A wall according to claim 7 in which a fluid-impermeable vapor barrier is laid beneath said second-mentioned sand and the ground.
Claim 12
Dependent Claim
23 words
A wall according to claim 6 in which a layer of plaster is applied thereto, which plaster layer extends downwardly into the sand.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-04-24 | 1992-10-24 | 1993-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-04-24 | 1996-10-24 | 1997-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-04-24 | 2000-10-24 | 2001-04-25 | $7700.00 | Window Closed / Lapsed |