US3071311A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifugal friction pump
Assignee: Individual
•
Filing: 1958-12-15
•
Granted: 1963-01-01
•
Expires: 1978-12-15
Abstract
No abstract record available.
Inventors
- 👤 Schlumbohm Peter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:25
CPC Classifications
F; F04; F04D; F04D17/00; F04D17/08; F04D17/16; F04D17/161
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
A FRICTION PUMP FOR CENTRIFUGING FLUIDS, HAVING A CENTRIFUGING SPACE MOUNTED FOR ROTATION AROUND A SHAFT, COMPRISING A PLURALITY OF SUPERPOSED FLEXIBLE DISCS MOUNTED ON SAID SHAFT AND FORMING THE WALLS OF THE CENTRIFUGING SPACE BETWEEN THEM AND LEAVING A 360* OPEN EJECTION SLOT AT THE PERIPHERY OF THE WALLS, ONE WALL BEING OF POROUS AND FLEXIBLE MATERIAL AND FORMING WITH ITS PORES THE INTAKE PASSAGE FOR THE FLUID ENTERING INTO THE CENTRIFUGING SPACE, AND THE OTHER WALL BEING OF IMPERVIOUS MATERIAL.
Claim 2
Dependent Claim
82 words
A FRICTION PUMP FOR CENTRIFUGING FLUIDS, HAVING A CENTRIFUGING SPACE MOUNTED FOR ROTATION AROUND A SHAFT, COMPRISING A PLURALITY OF SUPERPOSED FLEXIBLE DISCS MOUNTED ON SAID SHAFT AND FORMING THE WALLS OF THE CENTRIFUGING SPACE BETWEEN THEM AND LEAVING A 360* OPEN EJECTION SLOT AT THE PERIPHERY OF THE WALLS, ONE WALL BEING OF POROUS AND FLEXIBLE MATERIAL AND FORMING WITH ITS PORES THE INTAKE PASSAGE FOR THE FLUID ENTERING INTO THE CENTRIFUGING SPACE, AND THE OTHER WALL BEING OF IMPERVIOUS MATERIAL.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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Cited
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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) | 1965-12-31 | 1966-07-02 | 1967-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-31 | 1970-07-02 | 1971-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-31 | 1974-07-02 | 1975-01-01 | $7700.00 | Window Closed / Lapsed |