Patent US2958592A successfully refreshed from Google Patents.
US2958592A
Expired / Lapsed
US
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Leak control device
Assignee: Individual
•
Filing: 1957-10-17
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Granted: 1960-11-01
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Expires: 1977-10-17
Abstract
No abstract record available.
Inventors
- 👤 Charles A Heath
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:41
CPC Classifications
F; F17; F17D; F17D5/00; F17D5/02; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7879; Y10T137/788; Y10T137/7882; Y10T137/7885
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
160 words
IN A DEVICE FOR ENABLING TE DETECTION OF GASES LEAKING FROM AN UNDERGROUND CONDUIT, A RECEPTACLE OF GENERALLY TUBULAR SHAPE, A FLANGE FROMED ON THE OUTSIDE OF SAID RECEPTACLE, FINS FORMED ON THE OUTSIDE OF FLANGE TO PERMIT THE RECEPTACLE TO BE SECURED WITH ITS UPPER END AT GROUND LEVEL, A PASSAGEWAY EXTENDING UPWARDLY THROUGH SAID RECEPTACLE A SHOULDER AT THE UPPER END OF SAID PASSAGEWAY, A DOME-SAHAPED RESILENT SEAL RESTING ON SAID SHOULDER AND COVERING THE UPPER END OF SAID PASSAGEWAY, AN OPENING FORMED AT THE CENTRAL PORTION OF SAID SEAL, A PLUG SECURABLE IN THE UPPER END OF SAID RECEPTACLE AND HAVING A RECESS ENGAGEABLE WITH THE OUTSIDE OF SAID SEAL RELATIVELY TIGHTLY WHEREBY SAID TION HOLDING SAID SEAL RELATIVELY TIGHTLY WHEREBY SAID OPENING WILL BE NORMALLY CLOSED, THE OPENING BEING OF SUCH SHAPE AS TO ENABLE IT TO BE OPENED BY A PROBE, AN AN OPENING IN SAID PLUG ABOVE SAID SEAL OPENING FOR RECEIVING SAID PROBE.
Claim 2
Dependent Claim
160 words
IN A DEVICE FOR ENABLING TE DETECTION OF GASES LEAKING FROM AN UNDERGROUND CONDUIT, A RECEPTACLE OF GENERALLY TUBULAR SHAPE, A FLANGE FROMED ON THE OUTSIDE OF SAID RECEPTACLE, FINS FORMED ON THE OUTSIDE OF FLANGE TO PERMIT THE RECEPTACLE TO BE SECURED WITH ITS UPPER END AT GROUND LEVEL, A PASSAGEWAY EXTENDING UPWARDLY THROUGH SAID RECEPTACLE A SHOULDER AT THE UPPER END OF SAID PASSAGEWAY, A DOME-SAHAPED RESILENT SEAL RESTING ON SAID SHOULDER AND COVERING THE UPPER END OF SAID PASSAGEWAY, AN OPENING FORMED AT THE CENTRAL PORTION OF SAID SEAL, A PLUG SECURABLE IN THE UPPER END OF SAID RECEPTACLE AND HAVING A RECESS ENGAGEABLE WITH THE OUTSIDE OF SAID SEAL RELATIVELY TIGHTLY WHEREBY SAID TION HOLDING SAID SEAL RELATIVELY TIGHTLY WHEREBY SAID OPENING WILL BE NORMALLY CLOSED, THE OPENING BEING OF SUCH SHAPE AS TO ENABLE IT TO BE OPENED BY A PROBE, AN AN OPENING IN SAID PLUG ABOVE SAID SEAL OPENING FOR RECEIVING SAID PROBE.
References Cited (Backward Citations)
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US1865764A
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US2349463A
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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) | 1963-11-01 | 1964-05-02 | 1964-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-01 | 1968-05-02 | 1968-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-01 | 1972-05-02 | 1972-11-01 | $7700.00 | Window Closed / Lapsed |