Patent US3973625A successfully refreshed from Google Patents.
Patent US3225591A successfully refreshed from Google Patents.
US3225591A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for use in measuring the hydraulic efficiency of fluid machines, such as turbines
Assignee: Individual
•
Filing: 1962-07-11
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Granted: 1965-12-28
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Expires: 1982-07-11
Abstract
No abstract record available.
Inventors
- 👤 Jr John C Orkney
- 👤 John C Orkney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:03
CPC Classifications
F; F03; F03B; F03B11/00; F03B11/008; Y; Y02; Y02E; Y02E10/00; Y02E10/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
189 words
APPARATUS FOR USE IN MEASURING THE HYDRAULIC EFFICIENCY OF FLUID MACHINES SUCH AS TURBINES WITH ENTRY AND DISCHARGE PASSAGES COMPRISING FIRST AND SECOND SAMPLING MEMBERS LOCATED RESPECTIVELY IN SAID ENTRY AND DISCHARGE PASSAGES FOR REMOVAL OF SAMPLE LIQUID FROM SAID PASSAGES, HIGH AND LOW PRESSURE CONTAINERS IN CONNECTION WITH SAID FIRST AND SECOND SAMPLING MEMBERS RESPECTIVELY AND THROUGH WHICH FLOW THE LIQUID SAMPLES FROM THE MACHINE, A PLURALITY OF THERMALLY EXPANSIVLE ELONGATED ELEMENTS EXTENDING WITHIN SAID CONTAINERS SO AS TO RECEIVE HEAT FROM THE LIQUID SAMPLES, MEASURING MEANS OPERATIVELY CONNECTED TO SAID ELEMENTS SO AS TO INDICTE CHANGES IN THE DIMENSIONS OF THE ELEMENTS AND TO GIVE A NULL BALANCE INDICATION WHEN THE LENGTHS OF THE ELEMENTS ARE THE SAME, INLET AND OUTLET THROTTLE VALVES FOR THE HIGH PRESSURE CONTAINER TO ENABLE ADJUSTMENT OF THE LIQUID TEMPERATURE THEREIN FOR NULL BALANCE AND GAUGES FOR MEASURING THE LIQUID PRESSURE IN THE HIGH PRESSURE CONTAINER AND THE TOTAL PRESSURE HEAD OVER THE FLUID MACHINE, THE HYDRAUCLIC EFFICIENCY OF THE MACHINE BEING CALCULATED FROM THE RATIO OF THE PRESSURE IN THE HIGH PRESSURE CONTAINER TO THE TOTAL PRESSURE HEAD OVER THE MACHINE.
Claim 2
Dependent Claim
189 words
APPARATUS FOR USE IN MEASURING THE HYDRAULIC EFFICIENCY OF FLUID MACHINES SUCH AS TURBINES WITH ENTRY AND DISCHARGE PASSAGES COMPRISING FIRST AND SECOND SAMPLING MEMBERS LOCATED RESPECTIVELY IN SAID ENTRY AND DISCHARGE PASSAGES FOR REMOVAL OF SAMPLE LIQUID FROM SAID PASSAGES, HIGH AND LOW PRESSURE CONTAINERS IN CONNECTION WITH SAID FIRST AND SECOND SAMPLING MEMBERS RESPECTIVELY AND THROUGH WHICH FLOW THE LIQUID SAMPLES FROM THE MACHINE, A PLURALITY OF THERMALLY EXPANSIVLE ELONGATED ELEMENTS EXTENDING WITHIN SAID CONTAINERS SO AS TO RECEIVE HEAT FROM THE LIQUID SAMPLES, MEASURING MEANS OPERATIVELY CONNECTED TO SAID ELEMENTS SO AS TO INDICTE CHANGES IN THE DIMENSIONS OF THE ELEMENTS AND TO GIVE A NULL BALANCE INDICATION WHEN THE LENGTHS OF THE ELEMENTS ARE THE SAME, INLET AND OUTLET THROTTLE VALVES FOR THE HIGH PRESSURE CONTAINER TO ENABLE ADJUSTMENT OF THE LIQUID TEMPERATURE THEREIN FOR NULL BALANCE AND GAUGES FOR MEASURING THE LIQUID PRESSURE IN THE HIGH PRESSURE CONTAINER AND THE TOTAL PRESSURE HEAD OVER THE FLUID MACHINE, THE HYDRAUCLIC EFFICIENCY OF THE MACHINE BEING CALCULATED FROM THE RATIO OF THE PRESSURE IN THE HIGH PRESSURE CONTAINER TO THE TOTAL PRESSURE HEAD OVER THE MACHINE.
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) | 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 |