Patent US3114297A successfully refreshed from Google Patents.
US3114297A
Expired / Lapsed
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Pilot digital positioner
Assignee: Individual
•
Filing: 1962-01-24
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Granted: 1963-12-17
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Expires: 1982-01-24
Abstract
No abstract record available.
Inventors
- 👤 Gizeski Terrence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:51
CPC Classifications
F; F15; F15B; F15B17/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A PRESSURE CONTROL SYSTEM COMPRISING A PLURALITY OF FIRST PISTON CHAMBERS EACH HAVING A FIRST PISTON THEREIN, SAID FIRST PISTONS HAVING SUBSTANTIALLY THE SAME CROSS-SECTIONAL AREA, A PRESSURE CONTROL CHAMBER HAVING A SECOND PISTON THEREIN, SAID SECOND PISTON AND SAID FIRST PISTONS BEING CONNECTED IN SERIES, MEANS TO SUPPLY FLUID UNDER PRESSURE TO EACH OF SAID PISTON CHAMBERS, EACH PISTON CHAMBER HAVING A SELECTIVELY CONTROLLABLE PRESSURE REGULATOR TO CONTROL THE PRESSURE OF THE FLUID ENTERING SAID PISTON CHAMBER, SAID PRESSURE REGULATORS AS COMPARED TO ANOTHER BEING SET TO CONFORM TO A BINARY PROGRESSION.
Claim 2
Dependent Claim
93 words
A PRESSURE CONTROL SYSTEM COMPRISING A PLURALITY OF FIRST PISTON CHAMBERS EACH HAVING A FIRST PISTON THEREIN, SAID FIRST PISTONS HAVING SUBSTANTIALLY THE SAME CROSS-SECTIONAL AREA, A PRESSURE CONTROL CHAMBER HAVING A SECOND PISTON THEREIN, SAID SECOND PISTON AND SAID FIRST PISTONS BEING CONNECTED IN SERIES, MEANS TO SUPPLY FLUID UNDER PRESSURE TO EACH OF SAID PISTON CHAMBERS, EACH PISTON CHAMBER HAVING A SELECTIVELY CONTROLLABLE PRESSURE REGULATOR TO CONTROL THE PRESSURE OF THE FLUID ENTERING SAID PISTON CHAMBER, SAID PRESSURE REGULATORS AS COMPARED TO ANOTHER BEING SET TO CONFORM TO A BINARY PROGRESSION.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-12-16 | 1967-06-17 | 1967-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-16 | 1971-06-17 | 1971-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-16 | 1975-06-17 | 1975-12-17 | $7700.00 | Window Closed / Lapsed |