US3347261A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and material for seal repair
Assignee: FMC Corp
•
Filing: 1965-10-19
•
Granted: 1967-10-17
•
Expires: 1985-10-19
Abstract
No abstract record available.
Inventors
- 👤 John R Yancey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:29
CPC Classifications
F; F16; F16K; F16K3/00; F16K3/02; F16K3/16; F16K3/20; F16K3/207; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0402; Y10T137/0491; Y10T137/0514; Y10T137/4238; Y10T137/4358; Y10T137/4442; Y10T137/598; Y10T137/6065; Y10T137/6072; Y10T137/6079; Y10T137/6082; Y10T29/00; Y10T29/49; Y10T29/49405; Y10T29/49412; Y10T29/49416; Y10T29/49417; Y10T29/49718; Y10T29/49719
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
THE METHOD OF RENEWING A SERVICE-CAVITIED SEALING ELEMENT THAT FORMS A FLUID SEAL BETWEEN CLOSELY FITTING MEMBERS WHILE THE SEALING ELEMENT IS IN PLACE IN A RECESS IN ONE OF SAID MEMBERS, THE SEALING ELEMENT BEING FORMED OF POLYMERIC MATERIAL; COMPRISING THE STEPS OF INJECTING A FLOWABLE MIXTURE OF CLOSELY PACKED, INTERLACED SHREDS OF SAID SEALING ELEMENT MATERIAL AND AN INTERSTITIAL LUBRICATING OIL INTO THE SEAL CONTAINING RECESS, CONTINUING INJECTION OF SAID MIXTURE UNDER PRESSURE SUFFICIENT TO CAUSE THE MIXTURE TO FLOW PERIPHERALLY AROUND THE SEALING ELEMENT AND TO FORM A DAM BETWEEN THE VALVE MEMBERS ADJACENT THE SEALING ELEMENT, AND COMPLETING THE INJECTION BY FORCING AND COMPACTING SAID MIXTURE INTO THE CAVITIES OF THE SEALING ELEMENT TO RECONDITION SEALING FACES ON THE SEALING ELEMENT.
Claim 2
Independent Claim
125 words
THE METHOD OF RENEWING A SERVICE-CAVITIED SEALING ELEMENT THAT FORMS A FLUID SEAL BETWEEN CLOSELY FITTING MEMBERS WHILE THE SEALING ELEMENT IS IN PLACE IN A RECESS IN ONE OF SAID MEMBERS, THE SEALING ELEMENT BEING FORMED OF POLYMERIC MATERIAL; COMPRISING THE STEPS OF INJECTING A FLOWABLE MIXTURE OF CLOSELY PACKED, INTERLACED SHREDS OF SAID SEALING ELEMENT MATERIAL AND AN INTERSTITIAL LUBRICATING OIL INTO THE SEAL CONTAINING RECESS, CONTINUING INJECTION OF SAID MIXTURE UNDER PRESSURE SUFFICIENT TO CAUSE THE MIXTURE TO FLOW PERIPHERALLY AROUND THE SEALING ELEMENT AND TO FORM A DAM BETWEEN THE VALVE MEMBERS ADJACENT THE SEALING ELEMENT, AND COMPLETING THE INJECTION BY FORCING AND COMPACTING SAID MIXTURE INTO THE CAVITIES OF THE SEALING ELEMENT TO RECONDITION SEALING FACES ON THE SEALING ELEMENT.
References Cited (Backward Citations)
US2747600A
Cited
US2731282A
Cited
US2746470A
Cited
US2838059A
Cited
US2992028A
Cited
US3043794A
Cited
US3144040A
Cited
US3051678A
Cited
US3045693A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-16 | 1971-04-17 | 1971-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-16 | 1975-04-17 | 1975-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-16 | 1979-04-17 | 1979-10-17 | $7700.00 | Window Closed / Lapsed |