US3225585A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for measuring air in hydraulic systems
Assignee: Lockheed Martin Corp
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Filing: 1963-02-28
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Granted: 1965-12-28
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Expires: 1983-02-28
Abstract
No abstract record available.
Inventors
- 👤 George J Wohnoutka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:19
CPC Classifications
G; G01; G01N; G01N7/00; G01N7/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
IN AN APPARATUS ADAPTED FOR MEASURING THE QUANTITY OF GAS ENTRAPPED IN A SEPARATE CLOSED HYDRAULIC SYSTEM, THE COMBINATION COMPRISING: FIRST MENAS FOR COMMUNICATING THE PRESSURE EFFECTS OF A FLUID AND FLUID THEREIN UNDER COMPRESSION UNIFORMLY THROUGH EACH OF TWO COOPERATING BRANCHES; VALVE MEANS CONNECTED TO ONE BRANCH OF SAID FRIST MEANS FOR PASSING OR BLOCKING THE FLOW OF SAID FLUID IN SAID ONE BRANCH: GAUGE MEANS CONNECTED TO THE OTHER BRANCH OF SAID FIRST MEANS FOR MEASURING THE PRESSURE EXERTED ON THE FLUIDS AND GAS OF THE HYDRULIC SYSTEM; VOLUME MEASURING MEANS CONNECTED TO SAID SECOND MEANS TO DETERMINE THE VOLUME OF GAS INCLUDED IN THE HYDRAULIC SYSTEM WHICH IS RELATED TO THE VOLUME OF FLUID MEASURED WITH SAID MEASURING MEANS; AND AN ON-
Claim 2
Dependent Claim
125 words
IN AN APPARATUS ADAPTED FOR MEASURING THE QUANTITY OF GAS ENTRAPPED IN A SEPARATE CLOSED HYDRAULIC SYSTEM, THE COMBINATION COMPRISING: FIRST MENAS FOR COMMUNICATING THE PRESSURE EFFECTS OF A FLUID AND FLUID THEREIN UNDER COMPRESSION UNIFORMLY THROUGH EACH OF TWO COOPERATING BRANCHES; VALVE MEANS CONNECTED TO ONE BRANCH OF SAID FRIST MEANS FOR PASSING OR BLOCKING THE FLOW OF SAID FLUID IN SAID ONE BRANCH: GAUGE MEANS CONNECTED TO THE OTHER BRANCH OF SAID FIRST MEANS FOR MEASURING THE PRESSURE EXERTED ON THE FLUIDS AND GAS OF THE HYDRULIC SYSTEM; VOLUME MEASURING MEANS CONNECTED TO SAID SECOND MEANS TO DETERMINE THE VOLUME OF GAS INCLUDED IN THE HYDRAULIC SYSTEM WHICH IS RELATED TO THE VOLUME OF FLUID MEASURED WITH SAID MEASURING MEANS; AND AN ON-
References Cited (Backward Citations)
US2736190A
Cited
US2635459A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-27 | 1969-06-28 | 1969-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-27 | 1973-06-28 | 1973-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-27 | 1977-06-28 | 1977-12-28 | $7700.00 | Window Closed / Lapsed |