Patent US4395091A successfully refreshed from Google Patents.
US4395091A
Expired / Lapsed
US
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Optical coupling device for use with a plasma emission spectrometer
Assignee: Applied Biosystems Inc
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Filing: 1980-10-31
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Granted: 1983-07-26
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Expires: 2000-10-31
Abstract
Abstract An optical coupling device for providing an oxygen-free optical path between a plasma torch and a monochromator includes a hollow body having means associated therewith for the venting thereof.
Inventors
- 👤 Albert J. Russo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:01
CPC Classifications
G; G01; G01J; G01J3/00; G01J3/02; G01J3/0291; G01N; G01N21/00; G01N21/62; G01N21/71; G01N21/73
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
105 words
An optical coupling device for use with a plasma emission spectrometer comprising: a hollow optically transparent high temperature body, said body having a first segment and a second segment, said first and said second segments being axially aligned and affixed to each other; means for gaseously sealing the end portions of said body; means for venting said body whereby said device provides an oxygen-free optical path along said body; and a hollow optically transparent high temperature tube integral with said first segment at the end thereof distal from said second segment, said tube being adapted to surround a plasma torch and align said body therewith.
Claim 2
Dependent Claim
105 words
An optical coupling device for use with a plasma emission spectrometer comprising: a hollow optically transparent high temperature body, said body having a first segment and a second segment, said first and said second segments being axially aligned and affixed to each other; means for gaseously sealing the end portions of said body; means for venting said body whereby said device provides an oxygen-free optical path along said body; and a hollow optically transparent high temperature tube integral with said first segment at the end thereof distal from said second segment, said tube being adapted to surround a plasma torch and align said body therewith.
Claim 3
Dependent Claim
22 words
A device as claimed in claim 1 further including inlet means through which an oxygen-free gas can be introduced into said body.
Claim 4
Dependent Claim
19 words
A device as claimed in claim 1 wherein said hollow tube is perpendicular to the axis of said body.
Claim 5
Dependent Claim
32 words
A device as claimed in claim 1 wherein said means for gaseously sealing said body includes an optically transparent window in said first segment, said window being recessed from said hollow tube.
Claim 6
Dependent Claim
29 words
A device as claimed in claim 2 wherein said inlet means is intimately affixed to said second segment and said venting means is intimately affixed to said first segment.
Claim 7
Dependent Claim
22 words
A device as claimed in claim 5 wherein said body contains an oxygen-free gas and said inlet and venting means are sealed.
Claim 8
Dependent Claim
24 words
A device as claimed in claim 1 wherein said body is affixed in gaseously sealed manner to an optical system via said second segment.
Claim 9
Dependent Claim
16 words
A device as claimed in claim 7 wherein said gaseous seal is produced via an O-ring.
Claim 10
Dependent Claim
15 words
A device as claimed in claim 1 wherein said means for venting evacuates said body.
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) | 1986-07-25 | 1987-01-24 | 1987-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-07-25 | 1991-01-24 | 1991-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-07-25 | 1995-01-24 | 1995-07-26 | $7700.00 | Window Closed / Lapsed |