US3289595A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High pressure canned motor pump
Assignee: Leuna Werke GmbH
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Filing: 1965-08-20
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Granted: 1966-12-06
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Expires: 1985-08-20
Abstract
No abstract record available.
Inventors
- 👤 Bach Friedrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:05
CPC Classifications
F; F04; F04D; F04D13/00; F04D13/02; F04D13/06; F04D13/0606; F04D13/062
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
A HERMETICALLY SEALED MOTOR PUMP UNIT COMPRISING A PRESSURE-RESISTANT CASING, A CANNED MOTOR, A PUMP FOR PUMPING HIGH-PRESSURE FLUIDS, SAID PUMP AND SAID MOTOR BEING DISPOSED IN SAID CASING, SAID MOTOR HAVING A STATOR COMPARTMENT AND A ROTOR COMPARTMENT, MEANS FOR CONNECTING SAID ROTOR COMPARTMENT TO THE PRESSURE SIDE OF SAID PUMP, AND MEANS FOR CONNECTING SAID STATOR COMPARTMENT TO THE SUCTION SIDE OF SAID PUMP FOR PRODUCING A PRESSURE DIFFERENTIAL BETWEEN SAID ROTOR AND SAID STATOR COMPARTMENTS SUCH THAT THE PRESSURE ACTING ON THE STATOR COMPARTMENT IS LOWER THAN THE PRESSURE IN THE ROTOR COMPARTMENT.
Claim 2
Dependent Claim
96 words
A HERMETICALLY SEALED MOTOR PUMP UNIT COMPRISING A PRESSURE-RESISTANT CASING, A CANNED MOTOR, A PUMP FOR PUMPING HIGH-PRESSURE FLUIDS, SAID PUMP AND SAID MOTOR BEING DISPOSED IN SAID CASING, SAID MOTOR HAVING A STATOR COMPARTMENT AND A ROTOR COMPARTMENT, MEANS FOR CONNECTING SAID ROTOR COMPARTMENT TO THE PRESSURE SIDE OF SAID PUMP, AND MEANS FOR CONNECTING SAID STATOR COMPARTMENT TO THE SUCTION SIDE OF SAID PUMP FOR PRODUCING A PRESSURE DIFFERENTIAL BETWEEN SAID ROTOR AND SAID STATOR COMPARTMENTS SUCH THAT THE PRESSURE ACTING ON THE STATOR COMPARTMENT IS LOWER THAN THE PRESSURE IN THE ROTOR COMPARTMENT.
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) | 1969-12-05 | 1970-06-06 | 1970-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-05 | 1974-06-06 | 1974-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-05 | 1978-06-06 | 1978-12-06 | $7700.00 | Window Closed / Lapsed |