US3256829A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pump and motor assembly
Assignee: Individual
•
Filing: 1964-06-05
•
Granted: 1966-06-21
•
Expires: 1984-06-05
Abstract
No abstract record available.
Inventors
- 👤 Schneider Peter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:58
CPC Classifications
H; H02; H02K; H02K5/00; H02K5/04; H02K5/12; H02K5/128; F; F04; F04D; F04D13/00; F04D13/02; F04D13/06; F04D13/0606; F04D13/0633; F04D13/064
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
IN COMBINATION, A PUMP HAVING A HOUSING AND AN IMPELLER MOUNTED IN SAID HOUSING, A MOTOR INCLUDING A ROTOR CAVITY FOR A ROTOR ROTATABLY MOUNTED THEREIN WHICH IS OPERATIVELY CONNECTED TO SAID IMPELLER TO DRIVE THE SAME, SAID ROTOR CAVITY BEING LINED WITH A DEEP DRAWN SHEET METAL MEMBER GENERALLY U-SHAPED IN A SECTION TAKEN ALONG A RADIAL PLANE THAT IS OPEN AT ONE END CONFRONTING THE IMPELLER, A PAIR OF ANNULAR MEMBERS AT THE OPEN END OF SAID U-SHAPED MEMBER DEFINING A SERIES OF ANNULAR TRANQUILLIZING CHAMBERS, MEANS DEFINING A PLURALITY OF OPENINGS IN SAID ANNULAR MEMBERS WHEREBY THE TRANQUILLIZING CHAMBERS AND THE INTERIOR OF SAID USHAPED MEMBER ARE IN FLUID COMMUNICATION WHEREBY UPON ACTUATION OF SAID IMPELLER FLUID PUMPED BY SAID IMPELLER ENTERS SAID ROTOR CAVITY THROUGH SAID ANNULAR TRANQUILLIZING CHAMBERS.
Claim 2
Dependent Claim
133 words
IN COMBINATION, A PUMP HAVING A HOUSING AND AN IMPELLER MOUNTED IN SAID HOUSING, A MOTOR INCLUDING A ROTOR CAVITY FOR A ROTOR ROTATABLY MOUNTED THEREIN WHICH IS OPERATIVELY CONNECTED TO SAID IMPELLER TO DRIVE THE SAME, SAID ROTOR CAVITY BEING LINED WITH A DEEP DRAWN SHEET METAL MEMBER GENERALLY U-SHAPED IN A SECTION TAKEN ALONG A RADIAL PLANE THAT IS OPEN AT ONE END CONFRONTING THE IMPELLER, A PAIR OF ANNULAR MEMBERS AT THE OPEN END OF SAID U-SHAPED MEMBER DEFINING A SERIES OF ANNULAR TRANQUILLIZING CHAMBERS, MEANS DEFINING A PLURALITY OF OPENINGS IN SAID ANNULAR MEMBERS WHEREBY THE TRANQUILLIZING CHAMBERS AND THE INTERIOR OF SAID USHAPED MEMBER ARE IN FLUID COMMUNICATION WHEREBY UPON ACTUATION OF SAID IMPELLER FLUID PUMPED BY SAID IMPELLER ENTERS SAID ROTOR CAVITY THROUGH SAID ANNULAR TRANQUILLIZING CHAMBERS.
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) | 1969-06-20 | 1969-12-20 | 1970-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-20 | 1973-12-20 | 1974-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-20 | 1977-12-20 | 1978-06-21 | $7700.00 | Window Closed / Lapsed |