US3263619A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motor-pump unit
Assignee: IMO Industries Inc
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Filing: 1965-10-04
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Granted: 1966-08-02
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Expires: 1985-10-04
Abstract
No abstract record available.
Inventors
- 👤 John J Matelena
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:14
CPC Classifications
F; F04; F04C; F04C14/00; F04C14/08; F04C2/00; F04C2/08; F04C2/12; F04C2/14; F04C2/16; F04C2/165
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
IN COMBINATION, AN ELECTRIC MOTOR INCLUDING AN ANNULAR ROTOR, A PUMP HOUSING MOUNTED WITHIN SAID ANNULAR ROTOR SO AS TO ROTATE THEREWITH, A PLURALITY OF IDLER SCREWS, MEANS MOUNTING SAID IDLER SCREWS WITHIN SAID HOUSING FOR ROTATION ABOUT THEIR RESPECTIVE AXES, A POWER SCREW POSITIONED CENTRALLY OF SAID IDLER SCREWS IN MESHING ENGAGEMENT THEREWITH SO AS TO FORM PUMPING CHAMBERS, AND MEANS FOR RESTRAINING ROTATION OF SAID POWER SCREW WHEREBY SAID PUMPING CHAMBERS ADVANCE AXIALLY ALONG SAID POWER SCREW UPON ROTATION OF SAID HOUSING AND PLANETARY MOVEMENT OF SAID IDLER SCREWS ABOUT SAID POWER SCREW.
Claim 2
Dependent Claim
95 words
IN COMBINATION, AN ELECTRIC MOTOR INCLUDING AN ANNULAR ROTOR, A PUMP HOUSING MOUNTED WITHIN SAID ANNULAR ROTOR SO AS TO ROTATE THEREWITH, A PLURALITY OF IDLER SCREWS, MEANS MOUNTING SAID IDLER SCREWS WITHIN SAID HOUSING FOR ROTATION ABOUT THEIR RESPECTIVE AXES, A POWER SCREW POSITIONED CENTRALLY OF SAID IDLER SCREWS IN MESHING ENGAGEMENT THEREWITH SO AS TO FORM PUMPING CHAMBERS, AND MEANS FOR RESTRAINING ROTATION OF SAID POWER SCREW WHEREBY SAID PUMPING CHAMBERS ADVANCE AXIALLY ALONG SAID POWER SCREW UPON ROTATION OF SAID HOUSING AND PLANETARY MOVEMENT OF SAID IDLER SCREWS ABOUT SAID POWER SCREW.
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) | 1969-08-01 | 1970-01-31 | 1970-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-01 | 1974-01-31 | 1974-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-01 | 1978-01-31 | 1978-08-02 | $7700.00 | Window Closed / Lapsed |