Patent US3296868A successfully refreshed from Google Patents.
US3296868A
Expired / Lapsed
US
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Differential pressure transmitter
Assignee: Elsag Bailey Inc
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Filing: 1963-07-22
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Granted: 1967-01-10
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Expires: 1983-07-22
Abstract
No abstract record available.
Inventors
- 👤 Harold H Koppel
- 👤 John V Werme
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:48
CPC Classifications
G; G01; G01L; G01L7/00; G01L7/02; G01L7/04; G01F; G01F1/00; G01F1/05; G01F1/34; G01F1/36; G01F1/38; G01F1/383; G01L13/00; G01L13/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
158 words
A DIFFERENTIAL PRESSURE TRANSMITTER, COMPRISING, A HOUSING, A DIAPHRAGM MEANS INTERNALLY MOUNTED IN SAID HOUSING AND POSITIONED TO FLEX AXIALLY THEREIN IN RESPONSE TO CHANGES IN THE DIFFERENCE IN PRESSURES APPLIED TO THE OPPOSITE SIDES THEREOF, MEANS CONNECTED TO SAID DIAPHRAGM MEANS TO SENSE THE AXIAL FLEXING THEREOF, A PRESSURE TRANSMITTING CONNECTION INTO SAID HOUSING ON ONE SIDE OF SAID DIAPHRAGM MEANS CONNECTED TO A FIRST SOURCE OF FLUID PRESSURE, A PRESSURE TRANSMITTING CONNECTION INTO SAID HOUSING ON THE OPPOSITE SIDE OF SAID DIAPHRAGM MEANS CONNECTED TO A SECOND SOURCE OF FLUID PRESSURE, AND MEANS FOR CYCLICALLY REVERSING SAID CONNECTIONS FOR PREDETERMINED INCREMENTS OF TIME SO THAT THE FIRST SOURCE OF FLUID PRESSURE IS CYCLICALLY APPLIED TO THE ONE SIDE AND THEN THE OPPOSITE SIDE OF SAID DIAPHRAGM MEANS FOR PREDETERMINED EQUAL INCREMENTS OF TIME WHILE SAID SECOND SOURCE OF FLUID PRESSURE IS CYCLICALLY APPLIED TO THE OPPOSITE SIDE AND THEN THE ONE SIDE OF SAID DIAPHRAGM MEANS.
Claim 2
Dependent Claim
158 words
A DIFFERENTIAL PRESSURE TRANSMITTER, COMPRISING, A HOUSING, A DIAPHRAGM MEANS INTERNALLY MOUNTED IN SAID HOUSING AND POSITIONED TO FLEX AXIALLY THEREIN IN RESPONSE TO CHANGES IN THE DIFFERENCE IN PRESSURES APPLIED TO THE OPPOSITE SIDES THEREOF, MEANS CONNECTED TO SAID DIAPHRAGM MEANS TO SENSE THE AXIAL FLEXING THEREOF, A PRESSURE TRANSMITTING CONNECTION INTO SAID HOUSING ON ONE SIDE OF SAID DIAPHRAGM MEANS CONNECTED TO A FIRST SOURCE OF FLUID PRESSURE, A PRESSURE TRANSMITTING CONNECTION INTO SAID HOUSING ON THE OPPOSITE SIDE OF SAID DIAPHRAGM MEANS CONNECTED TO A SECOND SOURCE OF FLUID PRESSURE, AND MEANS FOR CYCLICALLY REVERSING SAID CONNECTIONS FOR PREDETERMINED INCREMENTS OF TIME SO THAT THE FIRST SOURCE OF FLUID PRESSURE IS CYCLICALLY APPLIED TO THE ONE SIDE AND THEN THE OPPOSITE SIDE OF SAID DIAPHRAGM MEANS FOR PREDETERMINED EQUAL INCREMENTS OF TIME WHILE SAID SECOND SOURCE OF FLUID PRESSURE IS CYCLICALLY APPLIED TO THE OPPOSITE SIDE AND THEN THE ONE SIDE OF SAID DIAPHRAGM MEANS.
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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) | 1970-01-09 | 1970-07-11 | 1971-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-09 | 1974-07-11 | 1975-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-09 | 1978-07-11 | 1979-01-10 | $7700.00 | Window Closed / Lapsed |