Patent US3928003A successfully refreshed from Google Patents.
US3928003A
Expired / Lapsed
US
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Vacuum deaerator for viscous liquids
Assignee: Procter and Gamble Co
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Filing: 1973-06-22
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Granted: 1975-12-23
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Expires: 1993-06-22
Abstract
Abstract A centrifugal vacuum deaerator including a rotor which comprises a flange adapted to receive the material which is being deaerated after it is accelerated by centrifugal force, said flange being unperforated in the area where the material impinges on said flange, and said flange being distinguished by the absence of any flow-impeding means which would substantially impede the spreading of said material when it is deposited upon said flange.
Inventors
- 👤 Durward Fryar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:17
CPC Classifications
B; B01; B01D; B01D19/00; B01D19/0042; B01D19/0052; Y; Y10; Y10S; Y10S494/00; Y10S494/90
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
118 words
A CENTRIFUGAL VACUUM DEAERATOR COMPRISING AN ENCLOSED CHAMBER CONNECTED TO A SOURCE OF VACUUM FOR CREATING A VACUUM WITHIN SAID CHAMBER, AND A ROTOR DISPOSED WITHIN SAID CHAMBER, SAID ROTOR COMPRISING A FLANGE POSITIONED TO RECEIVE THE MATERIAL TO BE DEAERATED AFTER IT IS ACCELERATED BY CENTRIFUGAL FORE, SAID FLANGE BEING DISTINGUISHED BY BEING UNPERFORATED IN THE AREA WHERE THE MATERIAL IMPINGES, AND SAID FLANGE BEING FURTHER DISTINGUISHED BY THE ABSENCE OF ANY FLOW-IMPEDING MEANS WHICH WOULD SUBSTANTIALLY IMPEDE THE SPREADING OF SAID MATERIAL INTO A THIN FILM WHEN IT IS DEPOSITED ON SAID FLANGE, AND THE PRESENCE OF AN EDGE ON SAID FLANGE OVER WHICH SAID THIN FILM OF SAID MATERIAL CAN BE SHEARED BY CENTRIFUGAL FORCE.
Claim 2
Dependent Claim
118 words
A CENTRIFUGAL VACUUM DEAERATOR COMPRISING AN ENCLOSED CHAMBER CONNECTED TO A SOURCE OF VACUUM FOR CREATING A VACUUM WITHIN SAID CHAMBER, AND A ROTOR DISPOSED WITHIN SAID CHAMBER, SAID ROTOR COMPRISING A FLANGE POSITIONED TO RECEIVE THE MATERIAL TO BE DEAERATED AFTER IT IS ACCELERATED BY CENTRIFUGAL FORE, SAID FLANGE BEING DISTINGUISHED BY BEING UNPERFORATED IN THE AREA WHERE THE MATERIAL IMPINGES, AND SAID FLANGE BEING FURTHER DISTINGUISHED BY THE ABSENCE OF ANY FLOW-IMPEDING MEANS WHICH WOULD SUBSTANTIALLY IMPEDE THE SPREADING OF SAID MATERIAL INTO A THIN FILM WHEN IT IS DEPOSITED ON SAID FLANGE, AND THE PRESENCE OF AN EDGE ON SAID FLANGE OVER WHICH SAID THIN FILM OF SAID MATERIAL CAN BE SHEARED BY CENTRIFUGAL FORCE.
Claim 3
Dependent Claim
60 words
The deaerator of claim 1 wherein the rotor additionally comprises a centrally mounted bowl having a plurality of small apertures around its circumference, said bowl being adapted to receive the material to be deaerated and in spaced relationship to said flange, whereby when the rotor is rotated, centrifugal force accelerates said material through said apertures to impinge upon said flange.
Claim 4
Dependent Claim
20 words
The deaerator of claim 2 wherein said aperature has a diameter of from about 1/64 inch to about 1/4 inch.
Claim 5
Independent Claim
120 words
A method of deaerating a viscous liquid comprising the step of centrifuging said liquid in a bowl having a plurality of holes of a diameter of from about 1/64 to 1/4 inch in its sides, thereby causing said liquid to be forced through said holes in the form of droplets and to impinge upon a flange which is rotating coaxially and outwardly of said bowl and which is characterized by the absence of any flow-impeding means, whereby the liquid is formed into a thin film which spreads over said flange and which is sheared as it passes over the edge of said flange, said method being conducted under a pressure of from about 10 to about 30 inches of mercury.
Claim 6
Independent Claim
120 words
A method of deaerating a viscous liquid comprising the step of centrifuging said liquid in a bowl having a plurality of holes of a diameter of from about 1/64 to 1/4 inch in its sides, thereby causing said liquid to be forced through said holes in the form of droplets and to impinge upon a flange which is rotating coaxially and outwardly of said bowl and which is characterized by the absence of any flow-impeding means, whereby the liquid is formed into a thin film which spreads over said flange and which is sheared as it passes over the edge of said flange, said method being conducted under a pressure of from about 10 to about 30 inches of mercury.
Claim 7
Dependent Claim
21 words
The process of claim 4 wherein the holes in the bowl are from about 1/16 to about 1/8 inch in diameter.
Claim 8
Dependent Claim
18 words
The process of claim 5 wherein the pressure is from about 10 to about 20 inches of mercury.
References Cited (Backward Citations)
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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) | 1978-12-22 | 1979-06-23 | 1979-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-22 | 1983-06-23 | 1983-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-22 | 1987-06-23 | 1987-12-23 | $7700.00 | Window Closed / Lapsed |