Patent US3158180A successfully refreshed from Google Patents.
US3158180A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blind shell piston accumulator
Assignee: Greer Hydraulics Inc
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Filing: 1960-12-28
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Granted: 1964-11-24
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Expires: 1980-12-28
Abstract
No abstract record available.
Inventors
- 👤 Edward M Greer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:47
CPC Classifications
F; F15; F15B; F15B1/00; F15B1/02; F15B1/04; F15B1/08; F15B1/24; F15B2201/00; F15B2201/20; F15B2201/205; F15B2201/30; F15B2201/31; F15B2201/312; F15B2201/40; F15B2201/41; F15B2201/415
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
152 words
A PRESSURE VESSEL COMPRISING A CYLINDRICAL FORGED CASING HAVING A CYLINDRICAL OPENING AT ONE END AND HAVING ITS OTHER END CLOSED AND SUBSTANTIALLY HEMISPHERICAL, SAID CLOSED END BEING AN INTEGRAL PART OF THE CASING, A PISTON HAVING A HEMISPHERICAL PORTION AT ONE END, SAID PISTON BEING SLIDABLY MOUNTED IN SAID CASING, THE END OF THE PISTON IN THE CHAMBER OF SAID PRESSURE VESSEL ADJACENT THE HEMISPHERICAL END OF THE CASING HAVING ITS OUTER PERIPHERY BEVELLED AND ADAPTED TO ABUT AGAINST THE INNER SURFACE OF THE HEMISPHERICAL END OF SAID CASING, A PLUG RELEASABLY SECURED IN THE OPEN END OF THE CASING, SAID PLUG HAVING A RECESS IN ITS INNER END OF CURVATURE COMPLEMENTARY TO THE CURVATURE OF THE HEMISPHERICAL END OF SAID PISTON TO RECEIVE THE LATTER, SAID PLUG HAVING A PORT THERETHROUGH FOR FLUID, SAID CLOSED END HAVING A PORT THERETHROUGH OF DIAMETER A FRACTION OF THE DIAMETER OF SAID CASING.
Claim 2
Dependent Claim
152 words
A PRESSURE VESSEL COMPRISING A CYLINDRICAL FORGED CASING HAVING A CYLINDRICAL OPENING AT ONE END AND HAVING ITS OTHER END CLOSED AND SUBSTANTIALLY HEMISPHERICAL, SAID CLOSED END BEING AN INTEGRAL PART OF THE CASING, A PISTON HAVING A HEMISPHERICAL PORTION AT ONE END, SAID PISTON BEING SLIDABLY MOUNTED IN SAID CASING, THE END OF THE PISTON IN THE CHAMBER OF SAID PRESSURE VESSEL ADJACENT THE HEMISPHERICAL END OF THE CASING HAVING ITS OUTER PERIPHERY BEVELLED AND ADAPTED TO ABUT AGAINST THE INNER SURFACE OF THE HEMISPHERICAL END OF SAID CASING, A PLUG RELEASABLY SECURED IN THE OPEN END OF THE CASING, SAID PLUG HAVING A RECESS IN ITS INNER END OF CURVATURE COMPLEMENTARY TO THE CURVATURE OF THE HEMISPHERICAL END OF SAID PISTON TO RECEIVE THE LATTER, SAID PLUG HAVING A PORT THERETHROUGH FOR FLUID, SAID CLOSED END HAVING A PORT THERETHROUGH OF DIAMETER A FRACTION OF THE DIAMETER OF SAID CASING.
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) | 1967-11-24 | 1968-05-25 | 1968-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-24 | 1972-05-25 | 1972-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-24 | 1976-05-25 | 1976-11-24 | $7700.00 | Window Closed / Lapsed |