US3322071A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pump
Assignee: Textron Inc
•
Filing: 1965-06-10
•
Granted: 1967-05-30
•
Expires: 1985-06-10
Abstract
No abstract record available.
Inventors
- 👤 Robert K Teter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:02
CPC Classifications
F; F04; F04D; F04D9/00; F04D9/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
195 words
A SELF PRIMING LIQUID PUMP ADAPTED TO BE MOUNTED ON A MOTOR HAVING A HOUSING AND A SHAFT, COMPRISING A DISHED BACK PLATE HAVING AN ANNULAR PERIPHERAL EDGE PORTION AND A CENTRAL OPENING, MEANS FOR MOUNTING SAID BACK PLATE ON SAID MOTOR HOUSING WITH SAID SHAFT RECEIVED IN SAID OPENING, SAID BACK PLATE HAVING ON ITS INNER SIDE A CENTRAL IMPELLER CAVITY AND A VOLUTE PASSAGE AROUND SAID CAVITY AND DEFINED BY A PERIPHERAL WALL AND A SCROLL HAVING A LEADING END ADJACENT SAID CAVITY, AND SPIRILING OUT TO SAID PERIPHERAL WALL, SAID VOLUTE PASSAGE HAVING AN ENTRY PORTION COMMUNICATING WITH SAID CAVITY AND A DISCHARGE PORTION SEPARATED RADIALLY FROM SAID CAVITY BY SCROLL, AN IMPELLER ON SAID SHAFT AND IN SAID CAVITY, A END PLATE HAVING AN ANNULAR PERIPHERAL EDGE PORTION CONFORMING SUBSTANTIALLY TO AND FACING SAID PERIPHERAL EDGE PORTION OF SAID BACK PLATE, SAID END PLATE DEFINING A LIQUID STORAGE CHAMBER, A DISCHARGE OUTLET AT THE UPPER PART OF SAID CHAMBER AND AN INLET PASSAGE EXTENDING THROUGH SAID CHAMBER AND HAVING A CENTRAL OUTLET END, A WEAR PLATE HAVING AN ANNULAR PERIPHERAL EDGE PORTION INTERPOSED BETWEEN SAID PERIPHERAL EDGE PORTION OF SAID BACK
Claim 2
Dependent Claim
195 words
A SELF PRIMING LIQUID PUMP ADAPTED TO BE MOUNTED ON A MOTOR HAVING A HOUSING AND A SHAFT, COMPRISING A DISHED BACK PLATE HAVING AN ANNULAR PERIPHERAL EDGE PORTION AND A CENTRAL OPENING, MEANS FOR MOUNTING SAID BACK PLATE ON SAID MOTOR HOUSING WITH SAID SHAFT RECEIVED IN SAID OPENING, SAID BACK PLATE HAVING ON ITS INNER SIDE A CENTRAL IMPELLER CAVITY AND A VOLUTE PASSAGE AROUND SAID CAVITY AND DEFINED BY A PERIPHERAL WALL AND A SCROLL HAVING A LEADING END ADJACENT SAID CAVITY, AND SPIRILING OUT TO SAID PERIPHERAL WALL, SAID VOLUTE PASSAGE HAVING AN ENTRY PORTION COMMUNICATING WITH SAID CAVITY AND A DISCHARGE PORTION SEPARATED RADIALLY FROM SAID CAVITY BY SCROLL, AN IMPELLER ON SAID SHAFT AND IN SAID CAVITY, A END PLATE HAVING AN ANNULAR PERIPHERAL EDGE PORTION CONFORMING SUBSTANTIALLY TO AND FACING SAID PERIPHERAL EDGE PORTION OF SAID BACK PLATE, SAID END PLATE DEFINING A LIQUID STORAGE CHAMBER, A DISCHARGE OUTLET AT THE UPPER PART OF SAID CHAMBER AND AN INLET PASSAGE EXTENDING THROUGH SAID CHAMBER AND HAVING A CENTRAL OUTLET END, A WEAR PLATE HAVING AN ANNULAR PERIPHERAL EDGE PORTION INTERPOSED BETWEEN SAID PERIPHERAL EDGE PORTION OF SAID BACK
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) | 1970-05-29 | 1970-11-28 | 1971-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-29 | 1974-11-28 | 1975-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-29 | 1978-11-28 | 1979-05-30 | $7700.00 | Window Closed / Lapsed |