Patent US3280751A successfully refreshed from Google Patents.
US3280751A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sump pump
Assignee: FE Myers and Bro Co
•
Filing: 1965-10-15
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Granted: 1966-10-25
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Expires: 1985-10-15
Abstract
No abstract record available.
Inventors
- 👤 William J Ekey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 00:30
CPC Classifications
F; F04; F04D; F04D13/00; F04D13/02; F04D13/06; F04D15/00; F04D15/02; F04D15/0209; F04D15/0218
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
234 words
IN A SUMP PUMP; AN UPWARDLY FACING IMPELLER, A FRAME EXTENDING OVER THE FACE OF THE IMPELLER AND HAVING INLET PASSAGE MEANS ON TOP LEADING TO THE CENTER OF THE IMPELLER AND ALSO HAVING A CENTRAL CYLINDRICAL PORTION ON THE TOP COAXIAL WITH AND SPACED FROM THE IMPELLER, A DRIVE MOTOR HAVING A DOWNWARDLY EXTENDING OUTPUT SHAFT ON WHICH THE IMPELLER IS SUPPORTED AND HAVING A HUB ENGAGING THE INSIDE OF SAID CYLINDRICAL PORTION TO SUPPORT THE MOTOR ON THE FRAME, A DISCHARGE PASSAGE IN THE FRAME LEADING FROM THE PERIPHERY OF THE IMPELLER AND TERMINATING IN AN AXIALLY DIRECTED PORT ON THE MOTOR SIDE OF THE FRAME, A FLAT PLATE SECURED TO THE BOTTOM OF THE FRAME AND ENCLOSING THE BACK OF THE IMPELLER, SAID FRAME HAVING A FIRST RECESS EXTENDING INWARDLY FROM THE BOTTOM IN WHICH SAID IMPELLER IS DISPOSED, A SECOND RECESS EXTENDING INWARDLY FROM THE BOTTOM OF THE FRAME SPACED RADIALLY OUTWARDLY FROM SAID FIRST RECESS, SAID PORT OPENING INTO SAID SECOND RECESS, A GROOVE FORMED INTO THE BOTTOM OF THE FRAME AND CONNECTING SAID RECESSES, SAID GROOVE AND SECOND RECESS FORMING SAID DISCHARGE PASSAGE, SAID FLAT PLATE ENCLOSING SAID RECESSES AND GROOVE, AN ELECTRIC DRIVE MOTOR HAVING AN OUTPUT SHAFT ON WHICH SAID IMPELLER IS MOUNTED, SAID MOTOR HAVING A HOUSING WITH A HUB SURROUNDING SAID DRIVE SHAFT, AND SAID FRAME TELESCOPICALLY ENGAGING SAID HUB AND BEING FIXED THERETO.
Claim 2
Dependent Claim
234 words
IN A SUMP PUMP; AN UPWARDLY FACING IMPELLER, A FRAME EXTENDING OVER THE FACE OF THE IMPELLER AND HAVING INLET PASSAGE MEANS ON TOP LEADING TO THE CENTER OF THE IMPELLER AND ALSO HAVING A CENTRAL CYLINDRICAL PORTION ON THE TOP COAXIAL WITH AND SPACED FROM THE IMPELLER, A DRIVE MOTOR HAVING A DOWNWARDLY EXTENDING OUTPUT SHAFT ON WHICH THE IMPELLER IS SUPPORTED AND HAVING A HUB ENGAGING THE INSIDE OF SAID CYLINDRICAL PORTION TO SUPPORT THE MOTOR ON THE FRAME, A DISCHARGE PASSAGE IN THE FRAME LEADING FROM THE PERIPHERY OF THE IMPELLER AND TERMINATING IN AN AXIALLY DIRECTED PORT ON THE MOTOR SIDE OF THE FRAME, A FLAT PLATE SECURED TO THE BOTTOM OF THE FRAME AND ENCLOSING THE BACK OF THE IMPELLER, SAID FRAME HAVING A FIRST RECESS EXTENDING INWARDLY FROM THE BOTTOM IN WHICH SAID IMPELLER IS DISPOSED, A SECOND RECESS EXTENDING INWARDLY FROM THE BOTTOM OF THE FRAME SPACED RADIALLY OUTWARDLY FROM SAID FIRST RECESS, SAID PORT OPENING INTO SAID SECOND RECESS, A GROOVE FORMED INTO THE BOTTOM OF THE FRAME AND CONNECTING SAID RECESSES, SAID GROOVE AND SECOND RECESS FORMING SAID DISCHARGE PASSAGE, SAID FLAT PLATE ENCLOSING SAID RECESSES AND GROOVE, AN ELECTRIC DRIVE MOTOR HAVING AN OUTPUT SHAFT ON WHICH SAID IMPELLER IS MOUNTED, SAID MOTOR HAVING A HOUSING WITH A HUB SURROUNDING SAID DRIVE SHAFT, AND SAID FRAME TELESCOPICALLY ENGAGING SAID HUB AND BEING FIXED THERETO.
References Cited (Backward Citations)
US2603674A
Cited
US2875697A
Cited
US2862452A
Cited
US2939399A
Cited
US2922002A
Cited
US3176174A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-24 | 1970-04-25 | 1970-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-24 | 1974-04-25 | 1974-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-24 | 1978-04-25 | 1978-10-25 | $7700.00 | Window Closed / Lapsed |