US3328970A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe repair bell
Assignee: Individual
•
Filing: 1964-07-21
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Granted: 1967-07-04
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Expires: 1984-07-21
Abstract
No abstract record available.
Inventors
- 👤 Jr Anthony J Giambelluca
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:22
CPC Classifications
F; F16; F16L; F16L1/00; F16L1/26; B; B63; B63C; B63C11/00; B63C11/34; B63C11/44
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
134 words
IN A PIPE REPAIR BELL, WALLS DEFINING A BELL BODY WITH SAID BODY BEING OPEN AT THE BOTTOM, MEANS FOR CONNECTING AN AIR LINE TO THE BODY TO DRIVE OUT WATER IN THE BODY THROUGH THE OPEN BOTTOM, A PAIR OF OPPOSED SLOTS IN THE WALLS EXTENDING UPWARDLY FROM THE BOTTOM OF THE WALLS OF THE BODY ENABLING THE BODY TO STRADDLE A PIPE WITH THE PIPE DISPOSED IN THE SLOTS, MEANS INCLUDING INFLATABLE TUBES DISPOSED WITHIN THE SLOTS AND ADAPTED TO FORM WATER TIGHT SEALS ABOUT THE PIPES WITHIN THE SLOTS, AN AIR LOCK HOUSING PROJECTING UPWARDLY FROM THE TOP OF THE BODY AND HAVING A BOTTOM ACCESS OPENING THROUGH SAID TOP INTO THE BODY, SAID HOUSING BEING OF A SIZE LARGE ENOUGH TO RECEIVE THE HEAD OF A DIVER WITHIN THE BODY,
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) | 1970-07-03 | 1971-01-02 | 1971-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-03 | 1975-01-02 | 1975-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-03 | 1979-01-02 | 1979-07-04 | $7700.00 | Window Closed / Lapsed |