US3567348A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Screw pump provided with a radially movable rotor coupling
Assignee: Xylem Water Solutions AB
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Filing: 1969-04-23
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Granted: 1971-03-02
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Expires: 1989-04-23
Abstract
Abstract THERE IS PROVIDED A NOVEL TYPE OF COUPLING FOR USE IN HELICAL PUMPS OF THE TYPE WHICH COMPRISE A SINGLE ROTOR COACTING WITH AND ECCENTRICALLY ROTATING IN RELATION TO A FIXED STATOR, THE NOVEL COUPLING COMPRISING AN INTERMEDIATE CONNECTOR MEMBER WHICH BRIDGES THE INPUT AND OUTPUT MEMBERS OF THE COUPLING TO TRANSMIT TORQUE, AND ONLY TORQUE, THEREBETWEEN, THE CONNECTOR MEMBER BEING ESPECIALLY ADAPTED TO PERMIT THE USE OF VARIOUS ARBITRARY MEANS FOR ABSORBING AXIAL FORCES OCCURRING IN THE COUPLING.
Inventors
- 👤 Bengt A Benson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:07
CPC Classifications
F; F04; F04C; F04C2/00; F04C2/08; F04C2/10; F04C2/107; F04C2/1071; F04C2/1073; F16; F16D; F16D3/00; F16D3/02; F16D3/04; Y; Y10; Y10T; Y10T403/00; Y10T403/55; Y10T403/70; Y10T403/7075; Y10T403/7077; Y10T403/7079; Y10T403/7084
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-01 | 1974-08-31 | 1975-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-01 | 1978-08-31 | 1979-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-01 | 1982-08-31 | 1983-03-02 | $7700.00 | Window Closed / Lapsed |