US4897548A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for the multiple analysis of gases
Assignee: Tecan Schweiz AG
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Filing: 1988-10-18
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Granted: 1990-01-30
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Expires: 2008-10-18
Abstract
Abstract An apparatus for the multiple analysis of gases which can react with another gas to produce emission of light has at least two reaction chambers (1a, 1b), a single photodetector (3) and an optical redirection system (2) with a reflection surface movably mounted between the reaction chambers for sequentially and rapidly redirecting the light from the two reaction chambers onto the single photodetector for evaluation.
Inventors
- 👤 Peter Dome
- 👤 Heinz Wagner
- 👤 Alfred Meier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 07:22
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/75; G01N21/76; G01N21/766
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
99 words
An apparatus for the multiple analysis of gases which emit light when reacted with other gases, the apparatus comprising a plurality of chemiluminescence reaction chambers (1a, 1b) from each of which reaction chamber light is emitted when gases react therein; a single photodetector (3); an optical reflector (2) having a reflecting surface contained in a plane; means for mounting said optical reflector for rotational motion about an axis which forms an acute angle with the plane containing said reflecting surface; and drive means for moving said reflector in rapid sequence between a plurality of positions such that said light
Claim 2
Independent Claim
99 words
An apparatus for the multiple analysis of gases which emit light when reacted with other gases, the apparatus comprising a plurality of chemiluminescence reaction chambers (1a, 1b) from each of which reaction chamber light is emitted when gases react therein; a single photodetector (3); an optical reflector (2) having a reflecting surface contained in a plane; means for mounting said optical reflector for rotational motion about an axis which forms an acute angle with the plane containing said reflecting surface; and drive means for moving said reflector in rapid sequence between a plurality of positions such that said light
Claim 3
Dependent Claim
13 words
An apparatus according to claim 1 wherein said optical reflector is a prism.
Claim 4
Dependent Claim
57 words
An apparatus according to claim 2 which further includes means (17, 18) for flowing a stream of test gas into a first one of said reaction chambers (1a) and a converter (4) for the reduction of NO 2 to NO positioned in said means for flowing, serially upstream of said first one of said reaction chambers (1a).
Claim 5
Dependent Claim
29 words
An apparatus according to claim 3 wherein said optical reflector is mounted between said reaction chambers (1a, 1b) on a line extending between the centers of said reaction chambers.
Claim 6
Dependent Claim
13 words
An apparatus according to claim 1 wherein said optical reflector is a mirror.
Claim 7
Dependent Claim
54 words
An apparatus according to claim 5 which further includes means (17,18) for flowing a stream of test gas into a first one of said reaction chambers (1a) and a converter (4) for the reduction of NO 2 to NO positioned in said means for flowing, serially upstream of one of said reaction chambers (1a).
Claim 8
Dependent Claim
29 words
An apparatus according to claim 6 wherein said optical reflector is mounted between said reaction chambers (1a, 1b) on a line extending between the centers of said reaction chambers.
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) | 1993-01-29 | 1993-07-31 | 1994-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-01-29 | 1997-07-31 | 1998-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-01-29 | 2001-07-31 | 2002-01-30 | $7700.00 | Window Closed / Lapsed |