Patent US4607664A successfully refreshed from Google Patents.
US4607664A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plumbing test plug apparatus
Assignee: CARNEY-LOZANO ENTERPRISE Ltd
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Filing: 1985-10-15
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Granted: 1986-08-26
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Expires: 2005-10-15
Abstract
Abstract A plug to be temporarily located in a blocking manner within a pipe of a sewage pipe system of a building. The plug is to be installed within the pipe system as it is constructed. The plug is mounted within a flexible, enclosing wall, sleeve. The plug is constructed to be frangible and totally dissolvable within water. A clamping device is mounted exteriorly on the sleeve directly in the area of the plug. When the plug is no longer needed, the clamping device is operated to effect breaking of the plug and then disposing of the plug through the pipe system.
Inventors
- 👤 Joseph H. Carney
- 👤 Rudy Lozano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 01:31
CPC Classifications
E; E03; E03B; E03B7/00; E03B7/003; E03C; E03C1/00; E03C1/12; E03F; E03F7/00; E03F7/02; F; F16; F16K; F16K17/00; F16K17/40; F16L; F16L55/00; F16L55/10; F16L55/1011; Y; Y10; Y10S; Y10S137/00; Y10S137/91; Y10T; Y10T137/00; Y10T137/1624; Y10T137/1632; Y10T137/1692; Y10T137/1714
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
183 words
A plug apparatus for temporarily blocking the discharge fluid flow path of a pipe system comprising: a first pipe and a second pipe located in an in-line manner through which a fluid is to be conducted, both said first pipe and said second pipe having an open end, said open ends being located directly adjacent but spaced therefrom forming a gap; a flexible walled sleeve exteriorly mounted on both said first and second pipes and extending across said gap, said sleeve having an exterior wall surface and an interior wall surface, means formed on said interior wall surface for securing a plug; said plug locatable within said sleeve, said plug completely blocking said flow path between said first and second pipes said plug being destructable, said plug being held in position by said hiatus means; a first clamping means mounted on said exterior surface of said sleeve for securing said sleeve onto said first pipe and said second pipe in a fluid-tight manner; and a second clamping means mounted on said exterior surface of said sleeve for applying a force to said plug.
Claim 2
Dependent Claim
183 words
A plug apparatus for temporarily blocking the discharge fluid flow path of a pipe system comprising: a first pipe and a second pipe located in an in-line manner through which a fluid is to be conducted, both said first pipe and said second pipe having an open end, said open ends being located directly adjacent but spaced therefrom forming a gap; a flexible walled sleeve exteriorly mounted on both said first and second pipes and extending across said gap, said sleeve having an exterior wall surface and an interior wall surface, means formed on said interior wall surface for securing a plug; said plug locatable within said sleeve, said plug completely blocking said flow path between said first and second pipes said plug being destructable, said plug being held in position by said hiatus means; a first clamping means mounted on said exterior surface of said sleeve for securing said sleeve onto said first pipe and said second pipe in a fluid-tight manner; and a second clamping means mounted on said exterior surface of said sleeve for applying a force to said plug.
Claim 3
Dependent Claim
16 words
The plug apparatus as defined in claim 1 wherein: said plug being destructible by being frangible.
Claim 4
Dependent Claim
22 words
The plug apparatus as defined in claim 2 wherein: said plug being constructed of a material that is completely dissolvable within water.
Claim 5
Dependent Claim
68 words
The plug apparatus as defined in claim 3 wherein: said plug when viewed from the upstream section of said pipe system having a convex configuration, whereby as pressure is applied to the surface of said plug the pressure has a tendency to tightly press the periphery of said plug into said sleeve so as to insure the establishment of a fluid-tight connection between said plug and said sleeve.
Claim 6
Dependent Claim
30 words
The plug apparatus as defined in claim 4 wherein: said means for securing said plug comprising an annular groove, the periphery of said plug being located within said annular groove.
Claim 7
Dependent Claim
15 words
The plug apparatus as defined in claim 5 wherein: said sleeve being constructed of rubber.
Claim 8
Dependent Claim
54 words
The plug apparatus as defined in claim 6 wherein: said first clamping means including a split band substantially completely covering said sleeve, a pair of spaced-apart clamping bands being mounted on said split band, said clamping bands being operable to tightly secure said sleeve on said first and second pipes in a fluid-tight manner.
Claim 9
Dependent Claim
33 words
The plug apparatus as defined in claim 7 wherein: said second clamping means comprising a clamping device which when tightened decreases the diameter of said sleeve about said plug until said plug breaks.
Claim 10
Dependent Claim
33 words
The plug apparatus as defined in claim 2 wherein: said second clamping means comprising a clamping device which when tightened decreases the diameter of said sleeve about said plug until said plug breaks.
Claim 11
Dependent Claim
27 words
The plug apparatus as defined in claim 4 wherein: the upstream side of said plug being coated with a substance to slow the dissolving of said plug.
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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) | 1989-08-25 | 1990-02-24 | 1990-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-08-25 | 1994-02-24 | 1994-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-08-25 | 1998-02-24 | 1998-08-26 | $7700.00 | Window Closed / Lapsed |