Patent US4330688A successfully refreshed from Google Patents.
Patent US3098450A successfully refreshed from Google Patents.
US3098450A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pump shaft bearing means
Assignee: Layne and Bowler Pump Co
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Filing: 1961-07-26
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Granted: 1963-07-23
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Expires: 1981-07-26
Abstract
No abstract record available.
Inventors
- 👤 Clark D Bower
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:04
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/04; F04D29/046; F04D29/047; F16; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
IN A PUMP FOR MOVING THERETHROUGH ABRASIVE-CONTAINING LIQUID, AN ELONGATED HOUSING HAVING AN INLET AND AN OUTLET, AN ELONGATED OPERATING SHAFT ROTATIONAL IN SAID HOUSING SAID HOUSING HAVING LONGITUDINALLY ARRANGED BOWL UNITS BETWEEN THE PUMP INLET AND OUTLET, IMPELLERS CARRIED BY THE SHAFT AND OPERATIVELY ENGAGED WITH SAID BOWL UNITS TO MOVE LIQUID THROUGH SAID UNITS FROM THE INLET TO THE OUTLET OF THE PUMP, BEARINGS MOUNTING LONGITUDINALLY SPACED PORTIONS OF THE SHAFT IN THE BOWL UNITS, AN INTERMEDIATE RESILIENT BEARING DISPOSED BETWEEN AND LONGITUDINALLY SPACED FROM THE FIRST-MENTIONED BEARINGS TO HOLD THE SHAFT ENGAGED AXIALLY ALIGNED WITH THE HOUSING, SAID BEARINGS BEING DISPOSED WITHIN THE LIQUID FLOW THROUGH THE PUMP AND SUBJECT TO ATTRITION OF ABRASIVE IN THE FLOW, SAID RESILIENT BEARING COMPRISING TWO ROTATIONALLY ENGAGED RUBBER BUSHINGS.
Claim 2
Dependent Claim
129 words
IN A PUMP FOR MOVING THERETHROUGH ABRASIVE-CONTAINING LIQUID, AN ELONGATED HOUSING HAVING AN INLET AND AN OUTLET, AN ELONGATED OPERATING SHAFT ROTATIONAL IN SAID HOUSING SAID HOUSING HAVING LONGITUDINALLY ARRANGED BOWL UNITS BETWEEN THE PUMP INLET AND OUTLET, IMPELLERS CARRIED BY THE SHAFT AND OPERATIVELY ENGAGED WITH SAID BOWL UNITS TO MOVE LIQUID THROUGH SAID UNITS FROM THE INLET TO THE OUTLET OF THE PUMP, BEARINGS MOUNTING LONGITUDINALLY SPACED PORTIONS OF THE SHAFT IN THE BOWL UNITS, AN INTERMEDIATE RESILIENT BEARING DISPOSED BETWEEN AND LONGITUDINALLY SPACED FROM THE FIRST-MENTIONED BEARINGS TO HOLD THE SHAFT ENGAGED AXIALLY ALIGNED WITH THE HOUSING, SAID BEARINGS BEING DISPOSED WITHIN THE LIQUID FLOW THROUGH THE PUMP AND SUBJECT TO ATTRITION OF ABRASIVE IN THE FLOW, SAID RESILIENT BEARING COMPRISING TWO ROTATIONALLY ENGAGED RUBBER BUSHINGS.
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) | 1966-07-22 | 1967-01-21 | 1967-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-22 | 1971-01-21 | 1971-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-22 | 1975-01-21 | 1975-07-23 | $7700.00 | Window Closed / Lapsed |