US3368708A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filament wound tank design
Assignee: AO Smith Corp
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Filing: 1966-07-28
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Granted: 1968-02-13
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Expires: 1986-07-28
Abstract
No abstract record available.
Inventors
- 👤 Fred R Pflederer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:08
CPC Classifications
B; B65; B65D; B65D90/00; B65D90/02; B65D90/029; F; F17; F17C; F17C1/00; F17C1/16; F17C2201/00; F17C2201/01; F17C2201/0104; F17C2203/00; F17C2203/01; F17C2203/011; F17C2203/013; F17C2203/06; F17C2203/0634; F17C2203/0658; F17C2203/0663; F17C2203/067; F17C2209/00; F17C2209/21; F17C2209/2154; F17C2209/2163
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
163 words
A FILAMENT WOUND VESSEL, COMPRISING A CYLINDRICAL WALL SECTION HAVING A HOOP-TO-AXIAL STRESS RATIO IN THE RANGE OF 5:1 AND 8:1 AND COMPOSED OF A HELICALLY WOUND FIBROUS STRAND BONDED WITH A THERMOSETTING RESIN, A HEAD CONNECTED TO ONE END OF THE CYLINDRICAL WALL SECTION, AN ANNULAR HEAD SECTION CONNECTED TO THE OPPOSITE END OF THE CYLINDRICAL WALL SECTION AND HAVING AN OPENING, A MEMBER DISPOSED WITHIN THE OPENING, FLEXIBLE SEALING MEANS FOR SEALING THE SPACE BETWEEN SAID MEMBER AND SAID HEAD SECTION TO PERMIT RELATIVE MOVEMENT BETWEEN SAID MEMBER AND SAID HEAD SECTION, AND RIGID CONNECTING MEANS SECURED BETWEEN SAID HEAD AND SAID MEMBER, THE RADIAL COMPONENT OF THE INTERNAL PRESSURE WITHIN SAID VESSEL TENDING TO EXPAND SAID CYLINDRICAL WALL SECTION RADIALLY AND MOVE SAID HEAD AND SAID HEAD SECTION TOWARD EACH OTHER AND A PORTION OF THE AXIAL COMPONENT OF SAID INTERNAL PRESSURE TENDING TO MOVE SAID MEMBER IN A DIRECTION AWAY FROM SAID HEAD TO THEREBY RESIST THE AXIAL PRESSURE.
Claim 2
Dependent Claim
163 words
A FILAMENT WOUND VESSEL, COMPRISING A CYLINDRICAL WALL SECTION HAVING A HOOP-TO-AXIAL STRESS RATIO IN THE RANGE OF 5:1 AND 8:1 AND COMPOSED OF A HELICALLY WOUND FIBROUS STRAND BONDED WITH A THERMOSETTING RESIN, A HEAD CONNECTED TO ONE END OF THE CYLINDRICAL WALL SECTION, AN ANNULAR HEAD SECTION CONNECTED TO THE OPPOSITE END OF THE CYLINDRICAL WALL SECTION AND HAVING AN OPENING, A MEMBER DISPOSED WITHIN THE OPENING, FLEXIBLE SEALING MEANS FOR SEALING THE SPACE BETWEEN SAID MEMBER AND SAID HEAD SECTION TO PERMIT RELATIVE MOVEMENT BETWEEN SAID MEMBER AND SAID HEAD SECTION, AND RIGID CONNECTING MEANS SECURED BETWEEN SAID HEAD AND SAID MEMBER, THE RADIAL COMPONENT OF THE INTERNAL PRESSURE WITHIN SAID VESSEL TENDING TO EXPAND SAID CYLINDRICAL WALL SECTION RADIALLY AND MOVE SAID HEAD AND SAID HEAD SECTION TOWARD EACH OTHER AND A PORTION OF THE AXIAL COMPONENT OF SAID INTERNAL PRESSURE TENDING TO MOVE SAID MEMBER IN A DIRECTION AWAY FROM SAID HEAD TO THEREBY RESIST THE AXIAL PRESSURE.
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) | 1971-02-12 | 1971-08-14 | 1972-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-12 | 1975-08-14 | 1976-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-12 | 1979-08-14 | 1980-02-13 | $7700.00 | Window Closed / Lapsed |