Patent US1376216A successfully refreshed from Google Patents.
Patent US3402673A successfully refreshed from Google Patents.
US3402673A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pump
Assignee: W S SHAMBAN AND Co
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Filing: 1966-10-10
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Granted: 1968-09-24
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Expires: 1986-10-10
Abstract
No abstract record available.
Inventors
- 👤 John W Ballentine
- 👤 Leslie A Woodson
- 👤 William S Shamban
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:10
CPC Classifications
F; F04; F04B; F04B43/00; F04B43/12; F04B43/1253
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
160 words
IN A PUMP ADAPTED TO FORCE MATERIAL THROUGH A COMPRESSIBLE TUBE, THE COMBINATION OF: A HOLLOW PUMP HOUSING A SECTION OF THE COMPRESSIBLE TUBE BEING POSITIONABLE WITHIN SAID PUMP HOUSING; BEARING MEANS ON SAID PUMP HOUSING EXTENDING INTO THE INTERIOR OF SAID PUMP HOUSING; A SHAFT ROTATABLY MOUNTED BY SAID BEARING MEANS AND HAVING AN END PORTION EXTENDING INWARDLY INTO SAID PUMP HOUSING; A ROTOR HAVING A HUB PORTION MOUNTED FOR ROTATION WITH SAID END PORTION OF SAID SHAFT, SAID ROTOR HAVING AN OUTER PORTION SECURED TO SAID HUB PORTION AND EXTENDING GENERALLY RADIALLY OUTWARDLY OF SAID HUB PORTION AND IN ONE DIRECTION GENERALLY AXIALLY OF SAID SHAFT TO CAUSE AT LEAST A PORTION OF SAID BEARING MEANS TO LIE WITHIN SAID OUTER PORTION OF SAID ROTOR; AND IMPELLER MEANS SECURED TO SAID OUTER PORTION OF SAID ROTOR AND ENGAGEABLE WITH THE SECTION OF THE COMPRESSIBLE TUBE FOR COMPRESSING THE TUBE AND CAUSING THE MATERIAL TO MOVE THROUGH THE TUBE.
Claim 2
Dependent Claim
160 words
IN A PUMP ADAPTED TO FORCE MATERIAL THROUGH A COMPRESSIBLE TUBE, THE COMBINATION OF: A HOLLOW PUMP HOUSING A SECTION OF THE COMPRESSIBLE TUBE BEING POSITIONABLE WITHIN SAID PUMP HOUSING; BEARING MEANS ON SAID PUMP HOUSING EXTENDING INTO THE INTERIOR OF SAID PUMP HOUSING; A SHAFT ROTATABLY MOUNTED BY SAID BEARING MEANS AND HAVING AN END PORTION EXTENDING INWARDLY INTO SAID PUMP HOUSING; A ROTOR HAVING A HUB PORTION MOUNTED FOR ROTATION WITH SAID END PORTION OF SAID SHAFT, SAID ROTOR HAVING AN OUTER PORTION SECURED TO SAID HUB PORTION AND EXTENDING GENERALLY RADIALLY OUTWARDLY OF SAID HUB PORTION AND IN ONE DIRECTION GENERALLY AXIALLY OF SAID SHAFT TO CAUSE AT LEAST A PORTION OF SAID BEARING MEANS TO LIE WITHIN SAID OUTER PORTION OF SAID ROTOR; AND IMPELLER MEANS SECURED TO SAID OUTER PORTION OF SAID ROTOR AND ENGAGEABLE WITH THE SECTION OF THE COMPRESSIBLE TUBE FOR COMPRESSING THE TUBE AND CAUSING THE MATERIAL TO MOVE THROUGH THE TUBE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-24 | 1972-03-25 | 1972-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-24 | 1976-03-25 | 1976-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-24 | 1980-03-25 | 1980-09-24 | $7700.00 | Window Closed / Lapsed |