Patent US3385469A successfully refreshed from Google Patents.
US3385469A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nut and pre-tensioned bolt apparatus and method of assembly thereof for securing members together
Assignee: Combustion Engineering Inc
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Filing: 1966-07-22
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Granted: 1968-05-28
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Expires: 1986-07-22
Abstract
No abstract record available.
Inventors
- 👤 Albert L Gaines
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:50
CPC Classifications
F; F16; F16B; F16B31/00; F16B31/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
IN COMBINATION, A PRESSURE VESSEL HAVING AN OPENING THEREIN, CLOSURE MEANS FOR COVERING THE OPENING, BOLT MEANS AND ASSOCIATED NUT MEANS FOR SECURING THE CLOSURE MEANS TO THE PRESSURE VESSEL, THERE BEING AT LEAST TWO NUT MEANS ASSOCIATED WITH EACH BOLT MEANS, MEANS EXERTING A PRETENSIONING FORCE FOR PRETENSIONING THE BOLT MEANS DURING ASSEMBLY OF THE BOLT MEANS AND NUT MEANS, THE PRETENSIONING FORCE BEING GREAT ENOUGH SUCH THAT THERE WOULD BE INTERFERENCE BETWEEN THE THREADS OF THE BOLT MEANS
Claim 2
Dependent Claim
80 words
IN COMBINATION, A PRESSURE VESSEL HAVING AN OPENING THEREIN, CLOSURE MEANS FOR COVERING THE OPENING, BOLT MEANS AND ASSOCIATED NUT MEANS FOR SECURING THE CLOSURE MEANS TO THE PRESSURE VESSEL, THERE BEING AT LEAST TWO NUT MEANS ASSOCIATED WITH EACH BOLT MEANS, MEANS EXERTING A PRETENSIONING FORCE FOR PRETENSIONING THE BOLT MEANS DURING ASSEMBLY OF THE BOLT MEANS AND NUT MEANS, THE PRETENSIONING FORCE BEING GREAT ENOUGH SUCH THAT THERE WOULD BE INTERFERENCE BETWEEN THE THREADS OF THE BOLT MEANS
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-28 | 1971-11-27 | 1972-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-28 | 1975-11-27 | 1976-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-28 | 1979-11-27 | 1980-05-28 | $7700.00 | Window Closed / Lapsed |