US3090229A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Static defect compensation
Assignee: Giannini Controls Corp
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Filing: 1959-09-08
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Granted: 1963-05-21
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Expires: 1979-09-08
Abstract
No abstract record available.
Inventors
- 👤 Howard Robert Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:19
CPC Classifications
G; G01; G01P; G01P5/00; G01P5/14; G01P5/16; G01P5/17; G01P5/175
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
IN A SYSTEM FOR PRODUCING A REPRESENTATION OF TRUE STATIC PRESSURE, THE COMBINATION OF MEANS DIRECTLY DRIVEN BY PNEUMATIC PRESSURE DERIVED FROM A STATIC PRESSURE ORIFICE AND PRODUCING AN ELECTRICAL INPUT SIGNAL PROPORTIONAL TO INDICATED STATIC PRESSURE; SERVO FOLLOWUP MEANS COMPRISING A MOVABLE STATIC PRESSURE MEMBER, DIVIDING MEANS RESPONSIVE TO A REFERENCE SIGNAL AND ACTING TO PRODUCE AN ELECTRICAL OUTPUT SIGNAL EQUAL TO A VARIABLE FRACTION OF THE REFERENCE SIGNAL, SAID DIVIDING MEANS BEING DRIVABLE TO VARY THE VALUE OF SAID FRACTION, AND SERVO MEANS FOR DRIVING THE STATIC PRESSURE MEMBER AND THE DIVIDING MEANS IN SYNCHRONISM TO MAINTAIN THE OUTPUT SIGNAL FROM THE DIVIDING MEANS EQUAL TO SAID INPUT SIGNAL; MEANS PRODUCING A VOLTAGE SIGNAL PROPORTIONAL TO THE RATIO OF INDICATED STATIC PRESSURE TO TRUE STATIC PRESSURE, AND MEANS FOR SUPPLYING THE CONTROL SIGNAL AS REFERENCE SIGNAL
Claim 2
Dependent Claim
138 words
IN A SYSTEM FOR PRODUCING A REPRESENTATION OF TRUE STATIC PRESSURE, THE COMBINATION OF MEANS DIRECTLY DRIVEN BY PNEUMATIC PRESSURE DERIVED FROM A STATIC PRESSURE ORIFICE AND PRODUCING AN ELECTRICAL INPUT SIGNAL PROPORTIONAL TO INDICATED STATIC PRESSURE; SERVO FOLLOWUP MEANS COMPRISING A MOVABLE STATIC PRESSURE MEMBER, DIVIDING MEANS RESPONSIVE TO A REFERENCE SIGNAL AND ACTING TO PRODUCE AN ELECTRICAL OUTPUT SIGNAL EQUAL TO A VARIABLE FRACTION OF THE REFERENCE SIGNAL, SAID DIVIDING MEANS BEING DRIVABLE TO VARY THE VALUE OF SAID FRACTION, AND SERVO MEANS FOR DRIVING THE STATIC PRESSURE MEMBER AND THE DIVIDING MEANS IN SYNCHRONISM TO MAINTAIN THE OUTPUT SIGNAL FROM THE DIVIDING MEANS EQUAL TO SAID INPUT SIGNAL; MEANS PRODUCING A VOLTAGE SIGNAL PROPORTIONAL TO THE RATIO OF INDICATED STATIC PRESSURE TO TRUE STATIC PRESSURE, AND MEANS FOR SUPPLYING THE CONTROL SIGNAL AS REFERENCE SIGNAL
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) | 1966-05-20 | 1966-11-19 | 1967-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-20 | 1970-11-19 | 1971-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-20 | 1974-11-19 | 1975-05-21 | $7700.00 | Window Closed / Lapsed |