US3305169A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High speed hollow drum
Assignee: Individual
•
Filing: 1964-09-11
•
Granted: 1967-02-21
•
Expires: 1984-09-11
Abstract
No abstract record available.
Inventors
- 👤 Silver Harold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:12
CPC Classifications
B; B04; B04B; B04B5/00; B04B5/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
AN EXTERNALLY PRESSURIZED HIGH SPEED DRUM ASSEMBLY COMPRISING A HOLLOW DRUM, A SEALED HOUSING COMPLETELY SURROUNDING SAID DRUM, HYDROSTATIC BEARING MEANS ARRANGED BETWEEN EACH END OF SAID DRUM AND SAID HOUSING AND MOUNTING SAID DRUM FOR ROTATION IN SAID HOUSING, MEANS FOR ROTATING SAID DRUM, AND A HIGH PRESSURE INLET FORMED IN SAID HOUSING FOR RECEIVING PRESSURIZED FLUID IN THE HOUSING TO SUPPORT SAID DRUM EXTERNALLY IN OPPOSITION TO INTERNAL FORCES ACTING OUTWARDLY ON SAID DRUM.
Claim 2
Dependent Claim
76 words
AN EXTERNALLY PRESSURIZED HIGH SPEED DRUM ASSEMBLY COMPRISING A HOLLOW DRUM, A SEALED HOUSING COMPLETELY SURROUNDING SAID DRUM, HYDROSTATIC BEARING MEANS ARRANGED BETWEEN EACH END OF SAID DRUM AND SAID HOUSING AND MOUNTING SAID DRUM FOR ROTATION IN SAID HOUSING, MEANS FOR ROTATING SAID DRUM, AND A HIGH PRESSURE INLET FORMED IN SAID HOUSING FOR RECEIVING PRESSURIZED FLUID IN THE HOUSING TO SUPPORT SAID DRUM EXTERNALLY IN OPPOSITION TO INTERNAL FORCES ACTING OUTWARDLY ON SAID DRUM.
References Cited (Backward Citations)
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Cited
US1415881A
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US1061656A
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US2113160A
Cited
US3108955A
Cited
US2661150A
Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-20 | 1970-08-22 | 1971-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-20 | 1974-08-22 | 1975-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-20 | 1978-08-22 | 1979-02-21 | $7700.00 | Window Closed / Lapsed |