US3306220A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifugal pump, particularly a hot water pump
Assignee: Flygts Pumpar AB
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Filing: 1965-05-03
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Granted: 1967-02-28
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Expires: 1985-05-03
Abstract
No abstract record available.
Inventors
- 👤 Dahlgren Jens Karl Adolf
- 👤 Stahl Filip Torvald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 02:36
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/60; F04D29/62; F04D29/628; F04D13/00; F04D13/02; F04D13/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
A CENTRIFUGAL PUMP, PARTICULARLY A HOT WATER PUMP, HAVING A PUMP HOUSING INCLUDING A COVER DEFINING WITH SAID HOUSING PUMP AND MOTOR CHAMBERS, AN IMPELLER, A SUBSTANTIALLY VERTICAL THROUGHGOING DRIVING SHAFT FOR THE IMPELLER HAVING AN AXIS, A DRIVE MOTOR STATOR INCLUDING AN UPPER END WALL AND BEING MOUNTED ON THE PUMP HOUSING, A SHAFT BEARING AND SEALING ARRANGEMENT HAVING SECURING MEANS AND BEING POSITIONED IN THE PUMP-HOUSING COVER BETWEEN THE PUMP CHAMBER AND MOTOR CHAMBER, AN UPPER BEARING BRACKET HAVING SECURING MEANS AND BEING ATTACHED TO THE UPPER STATOR END WALL, THE DRIVING SHAFT BEING WITHDRAWABLY CONNECTED TO THE IMPELLER, AND BEING ADAPTED TO BE WITHDRAWN AXIALLY TOGETHER WITH THE ROTOR OF THE DRIVING MOTOR AND SAID SEALING ARRANGEMENT AND BEARING BRACKET, SUBSEQUENT TO REMOVING THE SECURING MEANS OF THE LATTER, AND THE SECURING MEANS OF THE SEALING ARRANGEMENT, AS A UNIT THROUGH SAID END WALL.
Claim 2
Dependent Claim
147 words
A CENTRIFUGAL PUMP, PARTICULARLY A HOT WATER PUMP, HAVING A PUMP HOUSING INCLUDING A COVER DEFINING WITH SAID HOUSING PUMP AND MOTOR CHAMBERS, AN IMPELLER, A SUBSTANTIALLY VERTICAL THROUGHGOING DRIVING SHAFT FOR THE IMPELLER HAVING AN AXIS, A DRIVE MOTOR STATOR INCLUDING AN UPPER END WALL AND BEING MOUNTED ON THE PUMP HOUSING, A SHAFT BEARING AND SEALING ARRANGEMENT HAVING SECURING MEANS AND BEING POSITIONED IN THE PUMP-HOUSING COVER BETWEEN THE PUMP CHAMBER AND MOTOR CHAMBER, AN UPPER BEARING BRACKET HAVING SECURING MEANS AND BEING ATTACHED TO THE UPPER STATOR END WALL, THE DRIVING SHAFT BEING WITHDRAWABLY CONNECTED TO THE IMPELLER, AND BEING ADAPTED TO BE WITHDRAWN AXIALLY TOGETHER WITH THE ROTOR OF THE DRIVING MOTOR AND SAID SEALING ARRANGEMENT AND BEARING BRACKET, SUBSEQUENT TO REMOVING THE SECURING MEANS OF THE LATTER, AND THE SECURING MEANS OF THE SEALING ARRANGEMENT, AS A UNIT THROUGH SAID END WALL.
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 |