US3218982A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pump
Assignee: Individual
•
Filing: 1963-08-12
•
Granted: 1965-11-23
•
Expires: 1983-08-12
Abstract
No abstract record available.
Inventors
- 👤 Paul L Wigton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:23
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/18; F04D29/22; F04D29/2238; F04D29/2255
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
A PUMP COMPRISING A HOLLOW ROTARY CASING HAVING AN INLET AND AN OUTLET THROUGH WHICH A FLUENT MATERIAL IS MOVED, PARTITIONING MEANS ROTATABLE WITH THE CASING AND DIVIDING ITS HOLLOW INTERIOR INTO AN UPSTREAM DISTRIBUTING CHAMBER AND A DOWNSTREAM PRESSURE CHAMBER, STATIONARY DISCHARGE MEANS IN THE PRESSURE CHAMBER HAVING A SMOOTH CONTINUOUS UNINTERRUPTED ANNULAR INNER SURFACE PORTION FOLLOWED BY A CONTINUOUS UNINTERRUPTED RESTRICTING CONICAL SURFACE PORTION BETWEEN ITS INTAKE AND DISCHARGE ENDS, MEANS FOR DIRECTING THE FLUENT MATERIAL ENTERING FROM SAID INLET IN TANGENTIAL CENTRIFUGAL FLOW TOWARD THE INNER SURFACE OF SAID DISCHARGE MEANS DURING ROTATION OF THE CASING, AND MEANS FOR CONTINUOUSLY ROTATING THE CASING SO AS TO STABILIZE THE PRESSURE IN THE PRESSURE CHAMBER AND MOVE THE MATERIAL ALONG THE SMOOTH SURFACE IN AN UNINTERRUPTED CENTRIFUGAL FLOW TO AND THROUGH SAID DISCHARGE END, THEREBY ESTABLISHING A SUBSTANTIALLY UNIFORM DISCHARGE FLOW THROUGH THE CASING OUTLET.
Claim 2
Dependent Claim
146 words
A PUMP COMPRISING A HOLLOW ROTARY CASING HAVING AN INLET AND AN OUTLET THROUGH WHICH A FLUENT MATERIAL IS MOVED, PARTITIONING MEANS ROTATABLE WITH THE CASING AND DIVIDING ITS HOLLOW INTERIOR INTO AN UPSTREAM DISTRIBUTING CHAMBER AND A DOWNSTREAM PRESSURE CHAMBER, STATIONARY DISCHARGE MEANS IN THE PRESSURE CHAMBER HAVING A SMOOTH CONTINUOUS UNINTERRUPTED ANNULAR INNER SURFACE PORTION FOLLOWED BY A CONTINUOUS UNINTERRUPTED RESTRICTING CONICAL SURFACE PORTION BETWEEN ITS INTAKE AND DISCHARGE ENDS, MEANS FOR DIRECTING THE FLUENT MATERIAL ENTERING FROM SAID INLET IN TANGENTIAL CENTRIFUGAL FLOW TOWARD THE INNER SURFACE OF SAID DISCHARGE MEANS DURING ROTATION OF THE CASING, AND MEANS FOR CONTINUOUSLY ROTATING THE CASING SO AS TO STABILIZE THE PRESSURE IN THE PRESSURE CHAMBER AND MOVE THE MATERIAL ALONG THE SMOOTH SURFACE IN AN UNINTERRUPTED CENTRIFUGAL FLOW TO AND THROUGH SAID DISCHARGE END, THEREBY ESTABLISHING A SUBSTANTIALLY UNIFORM DISCHARGE FLOW THROUGH THE CASING OUTLET.
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) | 1968-11-22 | 1969-05-24 | 1969-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-22 | 1973-05-24 | 1973-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-22 | 1977-05-24 | 1977-11-23 | $7700.00 | Window Closed / Lapsed |