US3288075A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pumps
Assignee: Tait Manufacturing Co
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Filing: 1964-11-27
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Granted: 1966-11-29
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Expires: 1984-11-27
Abstract
No abstract record available.
Inventors
- 👤 Kenneth R Lung
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:09
CPC Classifications
F; F04; F04D; F04D13/00; F04D13/02; F04D13/06; F04D13/08; F04D13/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
A PUMP ASSEMBLY ADAPTED TO HANDLE LIQUID HAVING FOREIGN PARTICLES DISPERSED THEREIN, COMPRISING MEANS DEFINING A PUMP HOUSING, A TUBULAR PUMP SHAFT ROTATABLY MOUNTED THEREIN, AT LEAST ONE IMPELLER MOUNTED ON SAID PUMP SHAFT FOR ROTATION THEREBY, AT LEAST ONE BEARING CONNECTED TO SAID HOUSING AND HAVING A SURFACE SUPPORTING SAID PUMP SHAFT ON THE INLET SIDE OF SAID IMPELLER, MEANS DEFINING AN AXIALLY EXTENDING PASSAGEWAY WITHIN SAID PUMP THROUGH THE CENTER PORTION OF SAID IMPELLER, MEANS DEFINING A LATERAL PASSAGEWAY WITHIN SAID PUMP SHAFT CONNECTING SAID AXIALLY EXTENDING PASSAGEWAY WITH SAID BEARING SURFACE, INLET MEANS TO SAID AXIALLY EXTENDING PASSAGEWAY LOCATED ON THE DISCHARGE SIDE OF AT LEAST ONE OF SAID IMPELLERS, AND FILTER MEANS MOUNTED FOR ROTATION WITH SAID IMPELLER AND SPACED ADJACENT SAID INLET MEANS FOR SUPPLYING LIQUID FREE OF FOREIGN PARTICLES TO SAID AXIALLY EXTEND-
Claim 2
Dependent Claim
139 words
A PUMP ASSEMBLY ADAPTED TO HANDLE LIQUID HAVING FOREIGN PARTICLES DISPERSED THEREIN, COMPRISING MEANS DEFINING A PUMP HOUSING, A TUBULAR PUMP SHAFT ROTATABLY MOUNTED THEREIN, AT LEAST ONE IMPELLER MOUNTED ON SAID PUMP SHAFT FOR ROTATION THEREBY, AT LEAST ONE BEARING CONNECTED TO SAID HOUSING AND HAVING A SURFACE SUPPORTING SAID PUMP SHAFT ON THE INLET SIDE OF SAID IMPELLER, MEANS DEFINING AN AXIALLY EXTENDING PASSAGEWAY WITHIN SAID PUMP THROUGH THE CENTER PORTION OF SAID IMPELLER, MEANS DEFINING A LATERAL PASSAGEWAY WITHIN SAID PUMP SHAFT CONNECTING SAID AXIALLY EXTENDING PASSAGEWAY WITH SAID BEARING SURFACE, INLET MEANS TO SAID AXIALLY EXTENDING PASSAGEWAY LOCATED ON THE DISCHARGE SIDE OF AT LEAST ONE OF SAID IMPELLERS, AND FILTER MEANS MOUNTED FOR ROTATION WITH SAID IMPELLER AND SPACED ADJACENT SAID INLET MEANS FOR SUPPLYING LIQUID FREE OF FOREIGN PARTICLES TO SAID AXIALLY EXTEND-
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) | 1969-11-28 | 1970-05-30 | 1970-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-28 | 1974-05-30 | 1974-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-28 | 1978-05-30 | 1978-11-29 | $7700.00 | Window Closed / Lapsed |