US3360154A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lock scarf closure
Assignee: General Dynamics Corp
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Filing: 1965-12-22
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Granted: 1967-12-26
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Expires: 1985-12-22
Abstract
No abstract record available.
Inventors
- 👤 Jr Harlan Turner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:06
CPC Classifications
F; F22; F22B; F22B37/00; F22B37/02; F22B37/22; F22B37/221
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
APPARATUS FOR CLOSING AN OPENING IN A CURVED PRESSURE VESSEL COMPRISING MEANS FORMING ALONG THE PERIPHERY OF THE OPENING A PAIR OF GENERALLY COAXIAL CONICAL SURFACES, A CYLINDRICAL SURFACE CONNECTING SAID CONICAL SURFACES, A CLOSURE PLATE HAVING A PAIR OF CONICAL SURFACES AND A CYLINDRICAL SURFACE ALONG ITS PERIPHERY COMPLEMENTARY TO AND FITTING SAID CONICAL SURFACES AND CYLINDRICAL SURFACE OF THE RING, AND MEANS TO FASTEN THE CLOSURE PLATE TO THE PERIPOHERY OF THE OPENING.
Claim 2
Dependent Claim
75 words
APPARATUS FOR CLOSING AN OPENING IN A CURVED PRESSURE VESSEL COMPRISING MEANS FORMING ALONG THE PERIPHERY OF THE OPENING A PAIR OF GENERALLY COAXIAL CONICAL SURFACES, A CYLINDRICAL SURFACE CONNECTING SAID CONICAL SURFACES, A CLOSURE PLATE HAVING A PAIR OF CONICAL SURFACES AND A CYLINDRICAL SURFACE ALONG ITS PERIPHERY COMPLEMENTARY TO AND FITTING SAID CONICAL SURFACES AND CYLINDRICAL SURFACE OF THE RING, AND MEANS TO FASTEN THE CLOSURE PLATE TO THE PERIPOHERY OF THE OPENING.
References Cited (Backward Citations)
US3311253A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-12-25 | 1971-06-26 | 1971-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-25 | 1975-06-26 | 1975-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-25 | 1979-06-26 | 1979-12-26 | $7700.00 | Window Closed / Lapsed |