US3077102A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gauge calibration unit
Assignee: GREE HYDRAULICS OF CALIFORNIA Inc
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Filing: 1958-09-23
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Granted: 1963-02-12
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Expires: 1978-09-23
Abstract
No abstract record available.
Inventors
- 👤 Edward M Greer
- 👤 Southland John Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:04
CPC Classifications
G; G01; G01L; G01L27/00; G01L27/002; G01L27/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
A GAUGE CALIBRATION UNIT COMPRISING A DIFFERENTIAL PRESSURE UNIT HAVING A GAS PRESSURE INLET AND A LIQUID PRESSURE INLET, THE GAS AND LIQUID SIDE OF SAID DIFFERENTIAL PRESSURE UNIT BEING COMPLETELY ISOLATED FROM EACH OTHER, AND HAVING AN ASSOCIATED PRESSURE GAUGE TO INDICATE THE DIFFERENTIAL BETWEEN THE PRESSURE APPLIED TO SAID INLETS, MEANS TO CONNECT A SOURCE OF LIQUID UNDER PRESSURE TO THE LIQUID INLET OF SAID DIFFERENTIAL PRESSURE UNIT, A MASTER PRESSURE GAUGE CONNECTED TO SAID LAST NAMED INLET TO INDICATE THE PRESSURE ON THE LIQUID FROM SUCH SOURCE, MEANS TO CONNECT A SOURCE OF GAS UNDER PRESSURE TO THE GAS INLET OF SAID DIFFERENTIAL PRESSURE UNIT AND MEANS TO CONNECT THE GAUGE TO BE CALIBRATED TO SAID GAS INLET OF SAID DIFFERENTIAL PRESSURE UNIT.
Claim 2
Dependent Claim
126 words
A GAUGE CALIBRATION UNIT COMPRISING A DIFFERENTIAL PRESSURE UNIT HAVING A GAS PRESSURE INLET AND A LIQUID PRESSURE INLET, THE GAS AND LIQUID SIDE OF SAID DIFFERENTIAL PRESSURE UNIT BEING COMPLETELY ISOLATED FROM EACH OTHER, AND HAVING AN ASSOCIATED PRESSURE GAUGE TO INDICATE THE DIFFERENTIAL BETWEEN THE PRESSURE APPLIED TO SAID INLETS, MEANS TO CONNECT A SOURCE OF LIQUID UNDER PRESSURE TO THE LIQUID INLET OF SAID DIFFERENTIAL PRESSURE UNIT, A MASTER PRESSURE GAUGE CONNECTED TO SAID LAST NAMED INLET TO INDICATE THE PRESSURE ON THE LIQUID FROM SUCH SOURCE, MEANS TO CONNECT A SOURCE OF GAS UNDER PRESSURE TO THE GAS INLET OF SAID DIFFERENTIAL PRESSURE UNIT AND MEANS TO CONNECT THE GAUGE TO BE CALIBRATED TO SAID GAS INLET OF SAID DIFFERENTIAL PRESSURE UNIT.
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) | 1966-02-11 | 1966-08-13 | 1967-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-11 | 1970-08-13 | 1971-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-11 | 1974-08-13 | 1975-02-12 | $7700.00 | Window Closed / Lapsed |