US4591267A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spectrometer
Assignee: Baird Corp
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Filing: 1985-01-16
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Granted: 1986-05-27
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Expires: 2005-01-16
Abstract
Abstract A fluorescence spectrometer for multielement analysis including a source for atomizing a dispersed sample along an axis and a plurality of energizers and detectors preferably arranged in pairs about the source, with each of the pairs designed for analyzing one element. Preferably, the source is an inductively coupled plasma. Means is provided for each of the pairs to view a different segment of the source along its axis, depending on the element to be analyzed. Preferably, such means includes: a source movable along its axis; fiber optics interposed between the energizers and the source and between the source and the detectors; and a movable optical element interposed between the energizers and the source and between the source and the detectors. The spectrometer further features a polychromator for use in lieu of matched optical filters in the detectors and demountable hollow cathode lamps as energizers.
Inventors
- 👤 Donald R. Demers
- 👤 Charly D. Allemand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 04:02
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/62; G01N21/63; G01N21/64; G01N21/6402; G01N21/6404; G01N21/71; G01N21/73; G01N2021/6406; G01N2021/6417
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
56 words
A fluorescence spectrometer for multielement analysis of samples comprising: (a) a source for atomizing a dispersed sample along an axis; (b) a plurality of pairs of energizers and detectors mounted about said source, with each of said pairs for determining one of said elements; (c) said energizers and said detectors being each mounted on a carousel.
Claim 2
Dependent Claim
56 words
A fluorescence spectrometer for multielement analysis of samples comprising: (a) a source for atomizing a dispersed sample along an axis; (b) a plurality of pairs of energizers and detectors mounted about said source, with each of said pairs for determining one of said elements; (c) said energizers and said detectors being each mounted on a carousel.
Claim 3
Dependent Claim
142 words
A fluorescence spectrometer for multielement analysis of samples comprising: (a) a source for atomizing a dispersed sample along an axis; (b) a plurality of demountable hollow cathode lamps mounted about said source for exciting said elements in said sample; (c) a plurality of detectors also mounted about said source for detecting fluorescent emission from said excited elements; (d) said demountable hollow cathode lamps and said detectors arranged in pairs, with each of said pairs for determining one of said elements and viewing a different segment of said source; (e) said demountable hollow cathode lamps continuously being flushed with an inert gas; (f) said source being an inductively coupled plasma movable along its said axis; and (g) a movable optical element mounted between said pairs and said source for permitting said pairs to view different segments of said source along its said axis.
Claim 4
Dependent Claim
142 words
A fluorescence spectrometer for multielement analysis of samples comprising: (a) a source for atomizing a dispersed sample along an axis; (b) a plurality of demountable hollow cathode lamps mounted about said source for exciting said elements in said sample; (c) a plurality of detectors also mounted about said source for detecting fluorescent emission from said excited elements; (d) said demountable hollow cathode lamps and said detectors arranged in pairs, with each of said pairs for determining one of said elements and viewing a different segment of said source; (e) said demountable hollow cathode lamps continuously being flushed with an inert gas; (f) said source being an inductively coupled plasma movable along its said axis; and (g) a movable optical element mounted between said pairs and said source for permitting said pairs to view different segments of said source along its said axis.
Claim 5
Dependent Claim
108 words
A fluorescence spectrometer for multielement analysis of samples comprising: (a) a source for atomizing a dispersed sample along an axis; (b) a plurality of demountable hollow cathode lamps mounted about said source for exciting said elements in said sample; (c) a plurality of detectors also mounted about said source for detecting fluorescent emission from said excited elements; (d) said demountable hollow cathode lamps and said detectors arranged in pairs, with each of said pairs for determining one of said elements and viewing a different segment of said source; (e) which is a floor mounted instrument and wherein said lamps and said detectors are respectively mounted on a carousel.
Claim 6
Dependent Claim
108 words
A fluorescence spectrometer for multielement analysis of samples comprising: (a) a source for atomizing a dispersed sample along an axis; (b) a plurality of demountable hollow cathode lamps mounted about said source for exciting said elements in said sample; (c) a plurality of detectors also mounted about said source for detecting fluorescent emission from said excited elements; (d) said demountable hollow cathode lamps and said detectors arranged in pairs, with each of said pairs for determining one of said elements and viewing a different segment of said source; (e) which is a floor mounted instrument and wherein said lamps and said detectors are respectively mounted on a carousel.
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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) | 1989-05-26 | 1989-11-25 | 1990-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-05-26 | 1993-11-25 | 1994-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-05-26 | 1997-11-25 | 1998-05-27 | $7700.00 | Window Closed / Lapsed |