Patent US3255490A successfully refreshed from Google Patents.
US3255490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure device
Assignee: Individual
•
Filing: 1964-10-22
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Granted: 1966-06-14
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Expires: 1984-10-22
Abstract
No abstract record available.
Inventors
- 👤 Rolland G Sturm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:14
CPC Classifications
B; B30; B30B; B30B11/00; B30B11/004
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A DEVICE FOR GENERATING ULTRA-HIGH PRESSURES, COMPRISING: A PLURALITY OF PRESSURE INTENSIFYING UNITS OF DECREASING SIZE INCLUDING A RELATIVELY LARGEST UNIT AND A RELATIVELY SMALLEST UNIT, EACH SUCCEEDING SMALLER UNIT BEING NESTED WITHIN THE NEXT LARGER UNIT SO AS TO DEFINE A PLURALITY OF PRESSURE CHAMBERS, A RELATIVELY NON-COMPRESSIBLE FLUID IN EACH OF SAID CHAMBERS, A PREDETERMINED PRESSURE DEVELOPED BY SAID RELATIVELY LARGEST UNIT IN THE OUTERMOST CHAMBER BEING MULTIPLIED THROUGH SUCCEEDING SMALLER CHAMBERS TO A PREDETERMINED GREATER PRESSURE IN THE INNERMOST CHAMBER.
Claim 2
Independent Claim
83 words
A DEVICE FOR GENERATING ULTRA-HIGH PRESSURES, COMPRISING: A PLURALITY OF PRESSURE INTENSIFYING UNITS OF DECREASING SIZE INCLUDING A RELATIVELY LARGEST UNIT AND A RELATIVELY SMALLEST UNIT, EACH SUCCEEDING SMALLER UNIT BEING NESTED WITHIN THE NEXT LARGER UNIT SO AS TO DEFINE A PLURALITY OF PRESSURE CHAMBERS, A RELATIVELY NON-COMPRESSIBLE FLUID IN EACH OF SAID CHAMBERS, A PREDETERMINED PRESSURE DEVELOPED BY SAID RELATIVELY LARGEST UNIT IN THE OUTERMOST CHAMBER BEING MULTIPLIED THROUGH SUCCEEDING SMALLER CHAMBERS TO A PREDETERMINED GREATER PRESSURE IN THE INNERMOST CHAMBER.
References Cited (Backward Citations)
US3123862A
Cited
US1782103A
Cited
US2169281A
Cited
US2499530A
Cited
US2851725A
Cited
US3091804A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-13 | 1969-12-13 | 1970-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-13 | 1973-12-13 | 1974-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-13 | 1977-12-13 | 1978-06-14 | $7700.00 | Window Closed / Lapsed |