US3828191A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas handling system for electronradiography imaging chamber
Assignee: ELSCINT IMAGING Inc
•
Filing: 1973-05-02
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Granted: 1974-08-06
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Expires: 1993-05-02
Abstract
Abstract Process and apparatus for providing imaging gas under pressure to the imaging chamber of an electronradiographic system. A pump for providing imaging gas under pressure to the imaging chamber, a source of carbon dioxide gas under pressure for flushing air from the chamber to exhaust and for flushing imaging gas from the chamber to a recovery reservoir, which reservoir includes a supply of lime for reacting with the carbon dioxide gas, leaving the imagaing gas for recycling to the imaging chamber.
Inventors
- 👤 E Muntz
- 👤 M Welkowsky
- 👤 J Eseke
- 👤 A Morsell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:38
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/054; G03G15/0545
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
242 words
In a gas handling system for an electronradiographic imaging chamber having spaced electrodes with a gap therebetween for an imaging gas and having a gas inlet and a gas outlet for gas flow into and out of said gap, the combination of: a source of flushing gas under pressure; a first reservoir having an imaging gas and a flushing gas reactant therein, said reactant being capable of reacting with said flushing gas to form a precipitate; a pump having an input and an output; first valve means for connecting said gas outlet to exhaust; second valve means for connecting said source of flushing gas to said gas inlet; third valve means for connecting said gas outlet to said first reservoir; fourth valve means for connecting said pump output to said gas inlet; and means for connecting said first reservoir to said pump input; whereby said chamber is flushed to exhaust by flushing gas by opening said first and second valve means with said third and fourth valve means closed, and said chamber is charged with imaging gas by opening said third and fourth valve means with said first and second valve means closed, and imaging gas is flushed by flushing gas from said chamber to said first reservoir by opening said second and third valve means with said first and fourth valve means closed, and flushing gas is separated from imaging gas in said first reservoir by reaction with the reactant therein.
Claim 2
Dependent Claim
242 words
In a gas handling system for an electronradiographic imaging chamber having spaced electrodes with a gap therebetween for an imaging gas and having a gas inlet and a gas outlet for gas flow into and out of said gap, the combination of: a source of flushing gas under pressure; a first reservoir having an imaging gas and a flushing gas reactant therein, said reactant being capable of reacting with said flushing gas to form a precipitate; a pump having an input and an output; first valve means for connecting said gas outlet to exhaust; second valve means for connecting said source of flushing gas to said gas inlet; third valve means for connecting said gas outlet to said first reservoir; fourth valve means for connecting said pump output to said gas inlet; and means for connecting said first reservoir to said pump input; whereby said chamber is flushed to exhaust by flushing gas by opening said first and second valve means with said third and fourth valve means closed, and said chamber is charged with imaging gas by opening said third and fourth valve means with said first and second valve means closed, and imaging gas is flushed by flushing gas from said chamber to said first reservoir by opening said second and third valve means with said first and fourth valve means closed, and flushing gas is separated from imaging gas in said first reservoir by reaction with the reactant therein.
Claim 3
Dependent Claim
38 words
A system as defined in claim 1 including a second reservoir connected between said pump output and said fourth valve meanS with said pump providing imaging gas at increased pressure from said first reservoir to said second reservoir.
Claim 4
Dependent Claim
14 words
A system as defined in claim 1 wherein said flushing gas is carbon dioxide.
Claim 5
Dependent Claim
26 words
A system as defined in claim 3 wherein said flushing gas reactant comprises one or more of barium hydroxide, calcium hydroxide, lithium hydroxide and magnesium hydroxide.
Claim 6
Dependent Claim
15 words
A system as defined in claim 3 wherein said flushing gas reactant is calcium hydroxide.
Claim 7
Dependent Claim
95 words
A process of providing imaging gas under pressure to an imaging chamber of an electronradiographic system, including the steps of: loading a receptor sheet into the imaging chamber; flushing air from the imaging chamber by means of flushing gas under pressure; flushing the flushing gas from the imaging chamber by means of imaging gas under pressure; retaining imaging gas in the chamber at increased pressure; exposing said receptor to imaging X-ray radiation; flushing imaging gas from the imaging chamber by means of flushing gas under pressure; and unloading the receptor sheet from the imaging chamber.
Claim 8
Dependent Claim
95 words
A process of providing imaging gas under pressure to an imaging chamber of an electronradiographic system, including the steps of: loading a receptor sheet into the imaging chamber; flushing air from the imaging chamber by means of flushing gas under pressure; flushing the flushing gas from the imaging chamber by means of imaging gas under pressure; retaining imaging gas in the chamber at increased pressure; exposing said receptor to imaging X-ray radiation; flushing imaging gas from the imaging chamber by means of flushing gas under pressure; and unloading the receptor sheet from the imaging chamber.
Claim 9
Dependent Claim
50 words
The process as defined in claim 6 including: collecting the flushing and imaging gases flushed from the imaging chamber; and separating the flushing gas from the imaging gas by reacting the flushing gas with a reactant to form a precipitate, leaving the imaging gas for recycling to the imaging chamber.
Claim 10
Dependent Claim
14 words
A process as defined in claim 7 using carbon dioxide as the flushing gas.
Claim 11
Dependent Claim
24 words
A process as defined in claim 8 using one or more of barium hydroxide, calcium hydroxide, lithium hydroxide and magnesium hydroxide as the reactant.
Claim 12
Dependent Claim
13 words
A process as defined in claim 8 using calcium hydroxide as the reactant.
References Cited (Backward Citations)
US2692948A
Cited
US3774029A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-05 | 1978-02-04 | 1978-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-05 | 1982-02-04 | 1982-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-05 | 1986-02-04 | 1986-08-06 | $7700.00 | Window Closed / Lapsed |