US3272894A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of sealing vessels and joints thereof
Assignee: West Chester Chemical Co Inc
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Filing: 1961-06-06
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Granted: 1966-09-13
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Expires: 1981-06-06
Abstract
No abstract record available.
Inventors
- 👤 Roach Robert Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:10
CPC Classifications
F; F16; F16L; F16L55/00; F16L55/16; F16L55/162; F16L55/164
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
THE METHOD OF SEALING AND COATING A LEAK IN A VESSEL WHEREIN THE LEAK REGION COMPRISES A JOINT HAVING PACKING AND ADJACENT SURFACES, SAID LEAK REGION HAVING AN ELECTRICAL CHARGE; WHICH COMPRISES THE STEPS OF WETTING THE ARTICLES TO BE SEALED WITH A SEALANT COMPOSITION CONTAINING A STABLE AQUEOUS DISPERSION OF ELASTOMERIC RUBBERY SOLIDS AND A SURFACE-ACTIVE AGENT, SAID COMPOSITION HAVING AN IONIC-ACTIVE CHARGE OPPOSITE TO THE ELECTRICAL CHARGE OF SAID LEAK REGION AS TO PENETRATE SAID LEAKS; REMOVING EXCESS OF THE SEALANT COMPOSITION TO LEAVE A FILM DEPOSITED ON SAID ARTICLE, AND DRYING THE SEALENT COMPOSITION RETAINED BY SAID ARTICLE TO PROVIDE AN ELASTIC RUBBERY MASS FOR SEALING SAID LEAKS.
Claim 2
Independent Claim
111 words
THE METHOD OF SEALING AND COATING A LEAK IN A VESSEL WHEREIN THE LEAK REGION COMPRISES A JOINT HAVING PACKING AND ADJACENT SURFACES, SAID LEAK REGION HAVING AN ELECTRICAL CHARGE; WHICH COMPRISES THE STEPS OF WETTING THE ARTICLES TO BE SEALED WITH A SEALANT COMPOSITION CONTAINING A STABLE AQUEOUS DISPERSION OF ELASTOMERIC RUBBERY SOLIDS AND A SURFACE-ACTIVE AGENT, SAID COMPOSITION HAVING AN IONIC-ACTIVE CHARGE OPPOSITE TO THE ELECTRICAL CHARGE OF SAID LEAK REGION AS TO PENETRATE SAID LEAKS; REMOVING EXCESS OF THE SEALANT COMPOSITION TO LEAVE A FILM DEPOSITED ON SAID ARTICLE, AND DRYING THE SEALENT COMPOSITION RETAINED BY SAID ARTICLE TO PROVIDE AN ELASTIC RUBBERY MASS FOR SEALING SAID LEAKS.
References Cited (Backward Citations)
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Cited
US2094692A
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US2202617A
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US2429698A
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US2651618A
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US2995512A
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US2837122A
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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) | 1969-09-12 | 1970-03-14 | 1970-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-12 | 1974-03-14 | 1974-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-12 | 1978-03-14 | 1978-09-13 | $7700.00 | Window Closed / Lapsed |