Patent US6419267B1 successfully refreshed from Google Patents.
US3879503A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Scintillation analysis system
Assignee: United States Department of Health and Human Services
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Filing: 1973-08-02
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Granted: 1975-04-22
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Expires: 1993-08-02
Abstract
Abstract A system for the combustion preparation of samples for scintillation analysis comprising a combustion tube containing a combustion catalyst, a chimney tube positioned within the combustion tube and resting on the catalyst and means for admitting a sample for combustion, oxygen gas for ignition and an outlet means for the combustion product. The invention also includes means for collecting the combustion products comprising: for H2O an externally cooled condenser like system containing means for contacting a scintillation solvent with the gaseous combustion products in a cooled zone; and for CO2 an externally cooled condenser like system containing a helical rotatable band within the inner bore thereof for distributing a scintillation solvent along the walls thereof for countercurrent contact with the CO2 combustion product.
Inventors
- 👤 John I Peterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:25
CPC Classifications
G; G01; G01N; G01N31/00; G01N31/12
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
143 words
AN APPARATUS FOR THE COLLECTION OF A CARBON DIOXIDE CONTAINING GASEOUS COMBUSTION PRODUCT COMPRISING AN EXTERNALLY COOLED, VERTICAL TUBE HAVING POSITIONED COAXIALLY THEREIN AND ADAPTED FOR HIGH SPEED ROTATION THEREIN ABOUT ITS LONGITUDINAL AXIS, AN ELONGATED STRIP OF INERT MATERIAL HAVING A PLANAR SURFACE IN THE SHAPE OF A HELIX, SAID TUBE CONTAINING AT THE UPPER END THEREOF A SOLVENT INLET MEANS AND AN OXYGEN OUTLET MEANS AND AT THE BOTTOM THEREOF A LIQUID OUTLET MEANS, SAID STRIP OF INERT MATERIAL BEING A SCREEN-LIKE MATERIAL HAVING THE EDGES FEATHERED BY REMOVAL OF THE OUTERMOST LONGITUDINAL STRANDS TO THEREBY LEAVE THE ENDS BEING IN CONTACT WITH THE INNER BORE OF SAID TUBE SUCH THAT UPON ROTATION OF SAID STRIP, AND THE INTRODUCTION OF SOLVENT TO SAID TUBE, SAID STRIP DISTRIBUTES A THIN, SUBSTANTIALLY UNINTERRUPTED FILM OF SAID SOLVENT OVER THE WALLS OF SAID TUBE.
Claim 2
Independent Claim
143 words
AN APPARATUS FOR THE COLLECTION OF A CARBON DIOXIDE CONTAINING GASEOUS COMBUSTION PRODUCT COMPRISING AN EXTERNALLY COOLED, VERTICAL TUBE HAVING POSITIONED COAXIALLY THEREIN AND ADAPTED FOR HIGH SPEED ROTATION THEREIN ABOUT ITS LONGITUDINAL AXIS, AN ELONGATED STRIP OF INERT MATERIAL HAVING A PLANAR SURFACE IN THE SHAPE OF A HELIX, SAID TUBE CONTAINING AT THE UPPER END THEREOF A SOLVENT INLET MEANS AND AN OXYGEN OUTLET MEANS AND AT THE BOTTOM THEREOF A LIQUID OUTLET MEANS, SAID STRIP OF INERT MATERIAL BEING A SCREEN-LIKE MATERIAL HAVING THE EDGES FEATHERED BY REMOVAL OF THE OUTERMOST LONGITUDINAL STRANDS TO THEREBY LEAVE THE ENDS BEING IN CONTACT WITH THE INNER BORE OF SAID TUBE SUCH THAT UPON ROTATION OF SAID STRIP, AND THE INTRODUCTION OF SOLVENT TO SAID TUBE, SAID STRIP DISTRIBUTES A THIN, SUBSTANTIALLY UNINTERRUPTED FILM OF SAID SOLVENT OVER THE WALLS OF SAID TUBE.
Claim 3
Independent Claim
143 words
An apparatus for the collection of a carbon dioxide containing gaseous combustion product comprising an externally cooled, vertical tube having positioned coaxially therein and adapted for high speed rotation therein about its longitudinal axis, an elongated strip of inert material having a planar surface in the shape of a helix, said tube containing at the upper end thereof a solvent inlet means and an oxygen outlet means and at the bottom thereof a liquid outlet means, said strip of inert material being a screen-like material having the edges feathered by removal of the outermost longitudinal strands to thereby leave the ends being in contact with the inner bore of said tube such that upon rotation of said strip, and the introduction of solvent to said tube, said strip distributes a thin, substantially uninterrupted film of said solvent over the walls of said tube.
Claim 4
Independent Claim
143 words
An apparatus for the collection of a carbon dioxide containing gaseous combustion product comprising an externally cooled, vertical tube having positioned coaxially therein and adapted for high speed rotation therein about its longitudinal axis, an elongated strip of inert material having a planar surface in the shape of a helix, said tube containing at the upper end thereof a solvent inlet means and an oxygen outlet means and at the bottom thereof a liquid outlet means, said strip of inert material being a screen-like material having the edges feathered by removal of the outermost longitudinal strands to thereby leave the ends being in contact with the inner bore of said tube such that upon rotation of said strip, and the introduction of solvent to said tube, said strip distributes a thin, substantially uninterrupted film of said solvent over the walls of said tube.
Claim 5
Dependent Claim
40 words
The apparatus of claim 1 wherein said tube is coaxially positioned within a second tube having a diameter such that a space is provided between the outer wall of said first tube and the inner wall of said second 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) | 1978-04-21 | 1978-10-21 | 1979-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-21 | 1982-10-21 | 1983-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-21 | 1986-10-21 | 1987-04-22 | $7700.00 | Window Closed / Lapsed |