Patent US3352475A successfully refreshed from Google Patents.
Patent US3306219A successfully refreshed from Google Patents.
US3306219A
Expired / Lapsed
US
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Centrifugal pumps with slip-coupling
Assignee: Flygts Pumpar AB
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Filing: 1964-12-14
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Granted: 1967-02-28
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Expires: 1984-12-14
Abstract
No abstract record available.
Inventors
- 👤 Englesson Sixten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:26
CPC Classifications
F; F04; F04D; F04D13/00; F04D13/02; F04D13/021; F04D13/022; F04D13/06; F04D15/00; F04D15/0066; F04D29/00; F04D29/58; F04D29/586; F16; F16D; F16D31/00; F16D31/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
A CENTRIFUGAL PUMP INCLUDING A FLUID PUMPING CHAMBER AND AN IMPELLER ARRANGED IN SAID FLUID PUMPING CHAMBER FOR THE PUMPED FLUID, AND A DRIVING MOTOR FOR SAID IMPELLER ARRANGED OUTSIDE THE PUMPED FLUID, A HYDRAULIC SLIP-COUPLING ADJUSTABLY CONNECTING SAID IMPELLER TO ITS DRIVING MOTOR, SAID SLIP-COUPLING BEING ARRANGED IN SAID FLUID PUMPING CHAMBER, SAID SLIP-COUPLING AND IMPELLER BEING THEREBY OPERABLE TO IMPART THE OCCURRING HEAT TO SAID FLUID.
Claim 2
Dependent Claim
68 words
A CENTRIFUGAL PUMP INCLUDING A FLUID PUMPING CHAMBER AND AN IMPELLER ARRANGED IN SAID FLUID PUMPING CHAMBER FOR THE PUMPED FLUID, AND A DRIVING MOTOR FOR SAID IMPELLER ARRANGED OUTSIDE THE PUMPED FLUID, A HYDRAULIC SLIP-COUPLING ADJUSTABLY CONNECTING SAID IMPELLER TO ITS DRIVING MOTOR, SAID SLIP-COUPLING BEING ARRANGED IN SAID FLUID PUMPING CHAMBER, SAID SLIP-COUPLING AND IMPELLER BEING THEREBY OPERABLE TO IMPART THE OCCURRING HEAT TO SAID FLUID.
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) | 1970-02-27 | 1970-08-29 | 1971-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-27 | 1974-08-29 | 1975-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-27 | 1978-08-29 | 1979-02-28 | $7700.00 | Window Closed / Lapsed |