US3386745A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Soil-pipe gasket
Assignee: HAMILTON KENT MANUFACTURING COMPANY Inc
•
Filing: 1966-08-08
•
Granted: 1968-06-04
•
Expires: 1986-08-08
Abstract
No abstract record available.
Inventors
- 👤 Roy C Hein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:12
CPC Classifications
F; F16; F16L; F16L17/00; F16L17/02; F16L17/025
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
166 words
AN EXTRUDED, GENERALLY CYLINDRICAL GASKET FOR USE BETWEEN TWO SECTIONS OF SOIL PIPE, EACH OF WHICH SECTIONS IS PROVIDED AT ONE END WITH A SPIGOT AND AT THE OTHER END WITH A BELL HAVING AN INDENTATION IN ITS INNER SURFACE NEAR ITS OUTER END, WHICH GASKET IS OF THE CLOTHESPIN TYPE WITH TWO PORTIONS AT ITS INNER END, THE TIPS OF WHICH FLARE AWAY FROM ONE ANOTHER WITH A SPACE BETWEEN THE PORTIONS WHICH WIDENS AS THE DISTANCE FROM THE TIPS INCREASES, A FIRST PROTUBERANCE ON ITS OUTER SURFACE NEAR ITS OUTER END ADAPTED TO PROJECT INTO SAID INDENTATION, AND AT LEAST ONE PROTUBERANCE ON ITS INNER SURFACE, THE INNER SURFACE OF SAID LAST-MENTIONED PROTUBERANCE SLANTING TOWARD THE INNER END OF THE GASKET WITH THE BOTTOM OF ITS OPPOSITE SURFACE INDENTED TO FACILITATE FLEXING, AND AT LEAST ONE OPENING IN THE PORTION OF THE GASKET FROM WHICH THE PROTUBERANCES EXTEND WHICH OPENING EXTENDS THROUGH THE ENTIRE CIRCUMFERENCE OF THE GASKET AND FACILITATES ITS FLOWING UNDER COMPRESSION.
Claim 2
Dependent Claim
166 words
AN EXTRUDED, GENERALLY CYLINDRICAL GASKET FOR USE BETWEEN TWO SECTIONS OF SOIL PIPE, EACH OF WHICH SECTIONS IS PROVIDED AT ONE END WITH A SPIGOT AND AT THE OTHER END WITH A BELL HAVING AN INDENTATION IN ITS INNER SURFACE NEAR ITS OUTER END, WHICH GASKET IS OF THE CLOTHESPIN TYPE WITH TWO PORTIONS AT ITS INNER END, THE TIPS OF WHICH FLARE AWAY FROM ONE ANOTHER WITH A SPACE BETWEEN THE PORTIONS WHICH WIDENS AS THE DISTANCE FROM THE TIPS INCREASES, A FIRST PROTUBERANCE ON ITS OUTER SURFACE NEAR ITS OUTER END ADAPTED TO PROJECT INTO SAID INDENTATION, AND AT LEAST ONE PROTUBERANCE ON ITS INNER SURFACE, THE INNER SURFACE OF SAID LAST-MENTIONED PROTUBERANCE SLANTING TOWARD THE INNER END OF THE GASKET WITH THE BOTTOM OF ITS OPPOSITE SURFACE INDENTED TO FACILITATE FLEXING, AND AT LEAST ONE OPENING IN THE PORTION OF THE GASKET FROM WHICH THE PROTUBERANCES EXTEND WHICH OPENING EXTENDS THROUGH THE ENTIRE CIRCUMFERENCE OF THE GASKET AND FACILITATES ITS FLOWING UNDER COMPRESSION.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-06-04 | 1971-12-04 | 1972-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-04 | 1975-12-04 | 1976-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-04 | 1979-12-04 | 1980-06-04 | $7700.00 | Window Closed / Lapsed |