US3228341A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pump
Assignee: Taco Inc
•
Filing: 1963-08-21
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Granted: 1966-01-11
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Expires: 1983-08-21
Abstract
No abstract record available.
Inventors
- 👤 Jr Philip Clarkson Hungerford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:27
CPC Classifications
F; F04; F04D; F04D13/00; F04D13/02; F04D13/06; F04D13/0606; F04D13/0613
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
197 words
IN A COMBINED PUMP AND MOTOR UNIT, A HOUSING HAVING A FIRST END PLATE AND A SECOND END PLATE; A CHAMBER IN SAID HOUSING; A MOTOR STATOR WINDING IN SAID CHAMBER; A SHAFT; A MOTOR ROTOR FIXED TO SAID SHAFT WITHIN SAID CHAMBER; BEARING MOUNTS IN SAID FIRST AND SECOND END PLATES; BEARINGS WITHIN SAID MOUNTS THROUGH WHICH SAID SHAFT EXTENDS; AN IMPELLER CONNECTED TO ONE END OF SAID SHAFT; A PUMP CASING HAVING AN INLET AND AN OUTLET FIXED TO SAID HOUSING, SAID CASING INCLUDING AN IMPELLER CHAMBER INTO WHICH SAID IMPELLER EXTENDS; MEANS FACILITATING THE PASSAGE OF LIQUID FROM SAID IMPELLER CHAMBER TO ONE OF SAID BEARINGS, PAST SAID ROTOR TO SAID OTHER BEARING TO LUBRICATE AND MAINTAIN SAID BEARINGS COOL; PASSAGE MEANS EXTENDING THROUGH ONE OF SAID BEARING MOUNTS; AND THRUST BEARING MEANS BETWEEN SAID ROTOR AND SAID ONE OF SAID BEARING MOUNTS FOR CENTRIFUGALLY PUMPING SAID LIQUID IN A RECIRCULATING MANNER THROUGH SAID PASSAGE MEANS AND SAID THRUST BEARING MEANS WHEREBY THE LIQUID SURROUNDING SAID ROTOR WILL BE MAINTAINED IN A STATE OF RELATIVE QUIESCENCE TO THEREBY REDUCE TO A MINIMUM THE DEPOSIT ON SAID ROTOR OF MAGNETIZABLE FOREIGN MATTER WITHIN SAID LIQUID.
Claim 2
Dependent Claim
197 words
IN A COMBINED PUMP AND MOTOR UNIT, A HOUSING HAVING A FIRST END PLATE AND A SECOND END PLATE; A CHAMBER IN SAID HOUSING; A MOTOR STATOR WINDING IN SAID CHAMBER; A SHAFT; A MOTOR ROTOR FIXED TO SAID SHAFT WITHIN SAID CHAMBER; BEARING MOUNTS IN SAID FIRST AND SECOND END PLATES; BEARINGS WITHIN SAID MOUNTS THROUGH WHICH SAID SHAFT EXTENDS; AN IMPELLER CONNECTED TO ONE END OF SAID SHAFT; A PUMP CASING HAVING AN INLET AND AN OUTLET FIXED TO SAID HOUSING, SAID CASING INCLUDING AN IMPELLER CHAMBER INTO WHICH SAID IMPELLER EXTENDS; MEANS FACILITATING THE PASSAGE OF LIQUID FROM SAID IMPELLER CHAMBER TO ONE OF SAID BEARINGS, PAST SAID ROTOR TO SAID OTHER BEARING TO LUBRICATE AND MAINTAIN SAID BEARINGS COOL; PASSAGE MEANS EXTENDING THROUGH ONE OF SAID BEARING MOUNTS; AND THRUST BEARING MEANS BETWEEN SAID ROTOR AND SAID ONE OF SAID BEARING MOUNTS FOR CENTRIFUGALLY PUMPING SAID LIQUID IN A RECIRCULATING MANNER THROUGH SAID PASSAGE MEANS AND SAID THRUST BEARING MEANS WHEREBY THE LIQUID SURROUNDING SAID ROTOR WILL BE MAINTAINED IN A STATE OF RELATIVE QUIESCENCE TO THEREBY REDUCE TO A MINIMUM THE DEPOSIT ON SAID ROTOR OF MAGNETIZABLE FOREIGN MATTER WITHIN SAID LIQUID.
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) | 1969-01-10 | 1969-07-12 | 1970-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-10 | 1973-07-12 | 1974-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-10 | 1977-07-12 | 1978-01-11 | $7700.00 | Window Closed / Lapsed |