US2721732A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for mixing liquids and gases
Assignee: National Research Development Corp UK
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Filing: 1952-12-23
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Granted: 1955-10-25
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Expires: 1972-12-23
Abstract
No abstract record available.
Inventors
- 👤 Melrose Denis Graham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:06
CPC Classifications
A; A61; A61M; A61M1/00; A61M1/14; A61M1/32; B; B01; B01F; B01F29/00; B01F29/60; B01F29/63; Y; Y10; Y10S; Y10S128/00; Y10S128/03; Y10S261/00; Y10S261/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
159 words
APPARATUS FOR BRINGING A LIQUID AND GAS INTO INTIMATE CONTACT, INCLUDING AN ELONGATE HOLLOW BODY MEMBER, MEANS FOR SUPPORTING SAID MEMBER SO THAT IT IS INCLINED TO THE HORIZONTAL, MEANS FOR ROTATING SAID MEMBER ABOUT A CENTRAL AXIS, INLETS AND OUTLETS TO SAID MEMBER SUCH THAT A LIQUID MAY BE FLOWED THROUGH IT UNDER GRAVITY AND A GAS MAY BE PASSED THROUYGH IT ABOVE THE LIQUID, THE ITERNAL SHAPE OF SAID MEMBER BEING IN THE FORM OF A PLURALITY OF GROUPS OF ANNULI HAVING INNER CYLINDRICAL SURFACES THE AXES OF WHICH ARE ECCENTRIC WITH RESPECT TO SAID CENTRAL AXIS, THE AXIS OF SAID GROUPS OF ANNULI BEING DISPLACED 180* WITH RESPECT TO THAT OF EACH ADJACENT GROUP OF ANNULI WITH REFERENCE TO SAID CENTRAL AXIS, AND A PLURALITY OF SPACED RINGS, EACH FORMED WITH AN APERTURE COAXIAL WITH SAID CENTRAL AXIS, ARRANGED AT SPACED INTERVALS THROUGHOUT THE LENGTH OF SAID GROUPS OF ANNULI SO AS TO SUBDIVIDE SAID GROUPS.
Claim 2
Dependent Claim
159 words
APPARATUS FOR BRINGING A LIQUID AND GAS INTO INTIMATE CONTACT, INCLUDING AN ELONGATE HOLLOW BODY MEMBER, MEANS FOR SUPPORTING SAID MEMBER SO THAT IT IS INCLINED TO THE HORIZONTAL, MEANS FOR ROTATING SAID MEMBER ABOUT A CENTRAL AXIS, INLETS AND OUTLETS TO SAID MEMBER SUCH THAT A LIQUID MAY BE FLOWED THROUGH IT UNDER GRAVITY AND A GAS MAY BE PASSED THROUYGH IT ABOVE THE LIQUID, THE ITERNAL SHAPE OF SAID MEMBER BEING IN THE FORM OF A PLURALITY OF GROUPS OF ANNULI HAVING INNER CYLINDRICAL SURFACES THE AXES OF WHICH ARE ECCENTRIC WITH RESPECT TO SAID CENTRAL AXIS, THE AXIS OF SAID GROUPS OF ANNULI BEING DISPLACED 180* WITH RESPECT TO THAT OF EACH ADJACENT GROUP OF ANNULI WITH REFERENCE TO SAID CENTRAL AXIS, AND A PLURALITY OF SPACED RINGS, EACH FORMED WITH AN APERTURE COAXIAL WITH SAID CENTRAL AXIS, ARRANGED AT SPACED INTERVALS THROUGHOUT THE LENGTH OF SAID GROUPS OF ANNULI SO AS TO SUBDIVIDE SAID GROUPS.
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) | 1958-10-24 | 1959-04-25 | 1959-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-24 | 1963-04-25 | 1963-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-24 | 1967-04-25 | 1967-10-25 | $7700.00 | Window Closed / Lapsed |