US3711201A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for determining traces of elements in massive samples by optical emission spectrometry
Assignee: Centro Sperimentale Metallurgico SpA
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Filing: 1971-05-20
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Granted: 1973-01-16
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Expires: 1991-05-20
Abstract
Abstract Apparatus for determining traces of elements in massive samples by optical emission spectrometry comprises an attachment to a Petrey table which is a rotatable sample holder that rotates eccentric to and in gas-tight relation relative to the Petrey table, so that the path of the projection of the electrode on the sample is circular. The material of the sample holder is a selflubricating material, e.g. polytetrafluoroethylene. The sample holder carries resilient clamps for centering the sample relative to the sample holder.
Inventors
- 👤 B Morello
- 👤 S Sturlese
- 👤 G Quaglia
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:11
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/62; G01N21/66; G01N21/67
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
42 words
Apparatus as claimed in claim 1, said platform having a central cavity in which the said sample is disposed, said opening through said platform communicating with said central cavity, said central cavity being coaxial with the axis of rotation of said platform.
Claim 2
Dependent Claim
43 words
Apparatus as claimed in claim 1, the margins of said platform opening and Petrey table opening both being circular and tangential to each other in all positions of said platform, said platform opening being of substantially larger diameter than said Petrey table opening.
Claim 3
Dependent Claim
40 words
Apparatus as claimed in claim 1, said platform being of self-lubricating plastic material, and mounting means for said platform comprising at least three guide wheels on said Petrey table that roll in a groove about the periphery of said platform.
Claim 4
Dependent Claim
27 words
Apparatus as claimed in claim 1, said rotating means comprising gear teeth on the periphery of said platform in mesh with gear teeth on a drive means.
Claim 5
Dependent Claim
40 words
Apparatus as claimed in claim 1, said retaining means comprising a plurality of arms that engage spaced portions of the periphery of the sample, and spring means carried by said platform and urging said arms radially inwardly toward the sample.
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) | 1976-01-16 | 1976-07-17 | 1977-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-16 | 1980-07-17 | 1981-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-16 | 1984-07-17 | 1985-01-16 | $7700.00 | Window Closed / Lapsed |