Patent US3272894A successfully refreshed from Google Patents.
US3272894A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of sealing vessels and joints thereof
Assignee: West Chester Chemical Co Inc
•
Filing: 1961-06-06
•
Granted: 1966-09-13
•
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 17:54
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)
FR699288A
Cited
US2094692A
Cited
US2202617A
Cited
US2429698A
Cited
US2651618A
Cited
US2995512A
Cited
US2885299A
Cited
US2837122A
Cited
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 |