Patent US3104614A successfully refreshed from Google Patents.
US3104614A
Expired / Lapsed
US
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Control device for pump
Assignee: Individual
•
Filing: 1962-01-26
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Granted: 1963-09-24
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Expires: 1982-01-26
Abstract
No abstract record available.
Inventors
- 👤 Frank V Gramenzi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:52
CPC Classifications
F; F04; F04D; F04D15/00; F04D15/02; F04D15/0209; F04D15/0218
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
IN A PUMPING SYSTEM HAVING A SUMP, A PUMP, A SUCTION CONNECTION FROM THE PUMP TO THE SUMP, A DISCHARGE FROM THE PUMP, AND MEANS FOR ACTUATING SAID PUMP, A PRESSURE OPERATED SWITCH FOR CONTROLLING SAID ACTUATING MEANS COMPRISING A HOUSING, A CHAMBER IN THE HOUSING, A FLEXIBLE DIAPHRAGM SEALING ONE SIDE OF THE CHAMBER, ELECTRICAL SWITCH MEANS IN CONTACT WITH THE DIAPHRAGM, A FIRST INLET TO THE CHAMBER FROM THE SUMP, A SECOND INLET TO THE CHAMBER FROM THE PUMP DISCHARGE, AND VALVE MEANS IN THE FIRST INLET TO PERMIT FLUID FROM THE SUMP TO ENTER THE CHAMBER AND PREVENT FLUID FROM THE PUMP DISCHARGE TO LEAVE THE CHAMBER, WHEREBY PRESSURE FROM THE FLUID IN THE SUMP FLEXES THE DIAPHRAGM TO CLOSE THE ELECTRICAL SWITCH MEANS AND PRESSURE FROM THE PUMP DISCHARGE KEEPS THE DIAPHRAGM FLEXED.
Claim 2
Dependent Claim
137 words
IN A PUMPING SYSTEM HAVING A SUMP, A PUMP, A SUCTION CONNECTION FROM THE PUMP TO THE SUMP, A DISCHARGE FROM THE PUMP, AND MEANS FOR ACTUATING SAID PUMP, A PRESSURE OPERATED SWITCH FOR CONTROLLING SAID ACTUATING MEANS COMPRISING A HOUSING, A CHAMBER IN THE HOUSING, A FLEXIBLE DIAPHRAGM SEALING ONE SIDE OF THE CHAMBER, ELECTRICAL SWITCH MEANS IN CONTACT WITH THE DIAPHRAGM, A FIRST INLET TO THE CHAMBER FROM THE SUMP, A SECOND INLET TO THE CHAMBER FROM THE PUMP DISCHARGE, AND VALVE MEANS IN THE FIRST INLET TO PERMIT FLUID FROM THE SUMP TO ENTER THE CHAMBER AND PREVENT FLUID FROM THE PUMP DISCHARGE TO LEAVE THE CHAMBER, WHEREBY PRESSURE FROM THE FLUID IN THE SUMP FLEXES THE DIAPHRAGM TO CLOSE THE ELECTRICAL SWITCH MEANS AND PRESSURE FROM THE PUMP DISCHARGE KEEPS THE DIAPHRAGM FLEXED.
References Cited (Backward Citations)
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US2804516A
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US3067302A
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US3070021A
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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) | 1966-09-23 | 1967-03-25 | 1967-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-23 | 1971-03-25 | 1971-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-23 | 1975-03-25 | 1975-09-24 | $7700.00 | Window Closed / Lapsed |