US3909652A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Luminous discharge cell for spectrographic analysis
Assignee: Safran Aircraft Engines SAS
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Filing: 1974-07-03
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Granted: 1975-09-30
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Expires: 1994-07-03
Abstract
Abstract The cell has an anode with a light-transmitting through bore, one end of which is directed towards a sample-supporting cathode, the other end being directed towards a window in an anode housing. An electrically insulating sleeve is interposed between the anode and the housing. The sleeve is slidable along the anode and surrounds the end of the anode which faces the cathode. The annular end of the sleeve can be applied against a seating surface of the sample support.
Inventors
- 👤 Salvador Ferre
- 👤 Dan Lotan
- 👤 Rene Jean Morbioli
- 👤 Jean-Claude Alphonse H Schmitt
- 👤 Jean-Louis Cordazzo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:09
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/62; G01N21/66; G01N21/67; H; H01; H01J; H01J17/00; H01J17/02; H01J17/04; H01J17/06; H01J17/066; H01J2893/00; H01J2893/0064; H01J2893/0065; H01J2893/0066
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
115 words
A luminous discharge cell for spectrographic analysis, comprising a sample-supporting cathode, an anode housing having a window, an anode having at least one light-transmitting throughbore, one end of which is directed towards the cathode, the other end being directed towards the window, and an electrically insulating sleeve interposed between the anode and the housing and surrounding the end of the anode facing the cathode, the sleeve having an annular end and being slidable along the anode, said annular end being arranged, to be applied against a seating surface of the sample supporting cathode, said anode housing and said sample supporting cathode defining a sealed cell chamber, an ionisable gas being enclosed inside said sealed chamber.
Claim 2
Dependent Claim
115 words
A luminous discharge cell for spectrographic analysis, comprising a sample-supporting cathode, an anode housing having a window, an anode having at least one light-transmitting throughbore, one end of which is directed towards the cathode, the other end being directed towards the window, and an electrically insulating sleeve interposed between the anode and the housing and surrounding the end of the anode facing the cathode, the sleeve having an annular end and being slidable along the anode, said annular end being arranged, to be applied against a seating surface of the sample supporting cathode, said anode housing and said sample supporting cathode defining a sealed cell chamber, an ionisable gas being enclosed inside said sealed chamber.
Claim 3
Dependent Claim
34 words
A cell as claimed in claim 1, further comprising a compression spring interposed between the insulating sleeve and a shoulder provided on the anode, to thrust the insulating sleeve against the sample supporting cathode.
Claim 4
Dependent Claim
43 words
A cell as claimed in claim 1, further comprising a mounting member in which the anode is screwthreadedly engaged, and means for rotating the anode relative to the mounting member so that the anode is displaced selectively towards and away from the cathode.
Claim 5
Dependent Claim
59 words
A cell as claimed in claim 1, in which the cathode bears against a metal support wall of the anode housing, the support wall being electrically insulated from the anode by means of an envelope of electrically insulating material resistant to heat interposed between the support wall and the insulating sleeve, the sleeve being axially slidable in the envelope.
Claim 6
Dependent Claim
27 words
A cell as claimed in claim 1, in which the sample supporting cathode is connected directly to an electrical supply conductor for connection to an electric generator.
Claim 7
Dependent Claim
27 words
A cell as claimed in claim 1, further comprising electrically conducting means for supporting the sample supporting cathode and for connecting the cathode to an electric generator.
Claim 8
Dependent Claim
17 words
A cell as claimed in claim 1, in which the anode and the insulating sleeve are removable.
Claim 9
Dependent Claim
25 words
A cell as claimed in claim 1, including a passage for circulation of gas along the part of the anode enclosed by the insulating sleeve.
Claim 10
Dependent Claim
16 words
A cell as claimed in claim 8, in which the passage is formed in the anode.
Claim 11
Dependent Claim
20 words
A cell as claimed in claim 8, in which the passage is formed in the external surface of the anode.
Claim 12
Dependent Claim
20 words
A cell as claimed in claim 8, in which the passage is formed in the internal surface of the sleeve.
Claim 13
Dependent Claim
16 words
A cell as claimed in claim 8, in which the anode fits loosely in the sleeve.
Claim 14
Dependent Claim
24 words
A cell as claimed in claim 1, in which the sample supporting cathode is applied sealingly to a support wall of the anode housing.
Claim 15
Dependent Claim
61 words
A cell as claimed in claim 1, in the sample supporting cathode comprises a hollow sample carrier fitted in the end of the insulating sleeve, the sample carrier opening into the sleeve through an orifice which is substantially coaxial with the sleeve and which has a cross-sectional area less than the average cross-sectional area of the interior of the sample carrier.
Claim 16
Dependent Claim
24 words
A cell as claimed in claim 14, including a wall which supports the sample carrier and which is applied sealingly to the anode housing.
Claim 17
Dependent Claim
59 words
A cell as claimed in claim 14, in which the sample carrier comprises a body having a blind longitudinal bore at one end remote from the insulating sleeve, the bore receiving the eNd of an electrically conductive rod to be connected to the negative pole of an electric generator, and blind bore to receive a sample to be analysed.
Claim 18
Dependent Claim
43 words
A cell as claimed in claim 16, in which the sample carrier comprises two interfitting parts, one being the said body, the other being a sleeve fitting on the one hand on the body and on the other hand on the insulating sleeve.
Claim 19
Dependent Claim
43 words
A cell as claimed in claim 16, in which the sample carrier comprises two parts, one being the said body, the other capping the body and having an axial opening, the end having the axial opening being applied sealingly to the insulating sleeve.
Claim 20
Dependent Claim
23 words
A cell as claimed in claim 16, in which the sample carrier consists of a single piece which fits in the insulating sleeve.
Claim 21
Dependent Claim
19 words
A cell as claimed in claim 14, in which the sample carrier supporting wall has a vacuum connection point.
Claim 22
Dependent Claim
16 words
A cell as claimed in claim 14, in which the sample carrier supporting wall is cooled.
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) | 1978-09-29 | 1979-03-31 | 1979-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-29 | 1983-03-31 | 1983-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-29 | 1987-03-31 | 1987-09-30 | $7700.00 | Window Closed / Lapsed |