US3237565A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic pumps and reversible pump turbines
Assignee: English Electric Co Ltd
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Filing: 1963-10-07
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Granted: 1966-03-01
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Expires: 1983-10-07
Abstract
No abstract record available.
Inventors
- 👤 Hartland Derek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:46
CPC Classifications
F; F03; F03B; F03B15/00; F03B15/005; F03B11/00; F03B11/002; F03B3/00; F03B3/10; F03B3/103; Y; Y02; Y02E; Y02E10/00; Y02E10/20; Y10; Y10S; Y10S415/00; Y10S415/91
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
A HYDRAULIC MACHINE, COMPRISING A CASING AN IMPELLER MOUNTED FOR ROTATION IN SAID CASING, A SUCTION TUBE MOUNTED ON SAID CASING UPSTREAM OF SIAD IMPELLER FOR CONNECTION TO A LIQUID RESERVOIR, A DELIVERY TUBE MOUNTED ON SAID CASING DOWNSTREAM OF SAID IMPELLER, CONTROL MEANS MOUNTED ON SAID CASING FOR CAUSING SAID LIQUID TO FLOW ALONG THE SUCTION TUBE TOWARDS SAID IMPELLER AT A CONTROLLE RATE, AN EMULSIFIER CONNECTED TO A SOURCE OF BOTH GAS AND LIQUID FOR GENERATING AN EMULSION THEREFROM, MEANS FOR INJECTING SAID EMULSION INTO SAID SUCTION TUBE ADJACENT SAID IMPELLER DURING THE CONTROLLED FLOW OF SAID LIQUID THERETO, AND MEANS FOR VARYING THE PROPORTIONS OF GAS AND LIQUID IN SAID EMULSIFIER DURING THE INJECTION OF SAID EMULSION.
Claim 2
Dependent Claim
120 words
A HYDRAULIC MACHINE, COMPRISING A CASING AN IMPELLER MOUNTED FOR ROTATION IN SAID CASING, A SUCTION TUBE MOUNTED ON SAID CASING UPSTREAM OF SIAD IMPELLER FOR CONNECTION TO A LIQUID RESERVOIR, A DELIVERY TUBE MOUNTED ON SAID CASING DOWNSTREAM OF SAID IMPELLER, CONTROL MEANS MOUNTED ON SAID CASING FOR CAUSING SAID LIQUID TO FLOW ALONG THE SUCTION TUBE TOWARDS SAID IMPELLER AT A CONTROLLE RATE, AN EMULSIFIER CONNECTED TO A SOURCE OF BOTH GAS AND LIQUID FOR GENERATING AN EMULSION THEREFROM, MEANS FOR INJECTING SAID EMULSION INTO SAID SUCTION TUBE ADJACENT SAID IMPELLER DURING THE CONTROLLED FLOW OF SAID LIQUID THERETO, AND MEANS FOR VARYING THE PROPORTIONS OF GAS AND LIQUID IN SAID EMULSIFIER DURING THE INJECTION OF SAID EMULSION.
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) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |