US3702745A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid piston rotary gas pump assembly
Assignee: Siemen and Hinsch GmbH
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Filing: 1971-01-26
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Granted: 1972-11-14
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Expires: 1991-01-26
Abstract
Abstract THE INVENTION RELATES TO A LIQUID PISTON ROTARY GAS PUMP ASSEMBLY WHICH COMPRISES, ON ONE HAND, A LIQUID PISTON GAS PUMP INCLUDING A ROTOR AND A CASING, AND, ON THE OTHER, A FLANGED MOTOR, AND WHEREIN THE CASING OF THE PUMP IS MOUNTED TO THE FLANGE OF THE MOTOR, THE HUB OF THE ROTOR IS SUPPORTED BY THE STUB SHAFT OF THE FLANGED MOTOR AND A DYNAMIC AXIAL SEAL MEMBER SERVES AS A SEAL BETWEEN THE SHAFT AND THE PUMP CASING.
Inventors
- 👤 Segebrecht Udo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:29
CPC Classifications
F; F04; F04C; F04C19/00
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) | 1975-11-14 | 1976-05-15 | 1976-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-14 | 1980-05-15 | 1980-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-14 | 1984-05-15 | 1984-11-14 | $7700.00 | Window Closed / Lapsed |