US3185491A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seal for pipe joints
Assignee: Robinson Clay Product Co
•
Filing: 1962-08-01
•
Granted: 1965-05-25
•
Expires: 1982-08-01
Abstract
No abstract record available.
Inventors
- 👤 Richard H Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:32
CPC Classifications
F; F16; F16L; F16L21/00; F16L21/02; F16L21/035; Y; Y10; Y10S; Y10S277/00; Y10S277/91; Y10S277/935; Y10S277/944
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
A SEAL FOR USE BETWEEN CONNECTED TELESCOPIN ENDS OF GENERALLY CYLINDRICAL PIPE SECTIONS COMPRISING A PREFORMED TRULY ANNULAR COLLAR OF THIN AND RELATIVELY STIFF HARD PLASTIC MATERIAL HAVING A REALTIVELY HIGH TENSILE STRENGTH, IMPACT RESISTENCE AND HARDNESS, MEANS FOR SECURING SAID COLLAR IN FLUID-TIGHT RELATIONSHIP TO ONE OF SAID PIPE END SECTIONS GENERALLY CONCENTRIC THREWITH, THE MEANS COMPRISING A WATER RESISTANT BACK-UP MATERIAL FOR SAID HARD COLLAR, THE BACK-UP MATERIAL BEING SOFTER AND HAVING LESS TENSILE STRENGTH THAN SAID COLLAR, SAID COLLAR HAVING AN ANNULAR GROVE OPENING TOWARD THE OTHER OF SAID TELESCOPING PIPE END SECTIONS, AND RESILIENT ANNULAR SEALING RING SEATED IN SAID GROOVE AND SEALINGLY ENGAGING SAID OTHER PIPE END SECTION.
Claim 2
Dependent Claim
113 words
A SEAL FOR USE BETWEEN CONNECTED TELESCOPIN ENDS OF GENERALLY CYLINDRICAL PIPE SECTIONS COMPRISING A PREFORMED TRULY ANNULAR COLLAR OF THIN AND RELATIVELY STIFF HARD PLASTIC MATERIAL HAVING A REALTIVELY HIGH TENSILE STRENGTH, IMPACT RESISTENCE AND HARDNESS, MEANS FOR SECURING SAID COLLAR IN FLUID-TIGHT RELATIONSHIP TO ONE OF SAID PIPE END SECTIONS GENERALLY CONCENTRIC THREWITH, THE MEANS COMPRISING A WATER RESISTANT BACK-UP MATERIAL FOR SAID HARD COLLAR, THE BACK-UP MATERIAL BEING SOFTER AND HAVING LESS TENSILE STRENGTH THAN SAID COLLAR, SAID COLLAR HAVING AN ANNULAR GROVE OPENING TOWARD THE OTHER OF SAID TELESCOPING PIPE END SECTIONS, AND RESILIENT ANNULAR SEALING RING SEATED IN SAID GROOVE AND SEALINGLY ENGAGING SAID OTHER PIPE END SECTION.
References Cited (Backward Citations)
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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) | 1968-05-24 | 1968-11-23 | 1969-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-24 | 1972-11-23 | 1973-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-24 | 1976-11-23 | 1977-05-25 | $7700.00 | Window Closed / Lapsed |