EP0026683A2
Expired / Lapsed
EP
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Ion mobility detector
Assignee: Bendix Corp
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Filing: 1980-08-22
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Granted: —
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Expires: 2000-08-22
Abstract
Abstract lon mobility detector having an ion accelerator comprised of ceramic tubes (12a, 14a) coated inside with thick film resistor composition (30,34) across which a voltage potential difference (32a,36a) is impressed to provide an ion accelerating electrical field gradient within the tubes (12a, 14a).
Inventors
- 👤 David Rankin Browning
- 👤 Gordon Russell Sima Jr.
- 👤 John Calvin Schmidt
- 👤 David Wayne Sickenberger
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-07 10:25
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/62; G01N27/622; H; H01; H01J; H01J47/00; H01J47/008
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
62 words
Ion mobility deteetor having an enclosed volume (12,14) in which an electrostatic field operates on ions, characterized in that the electrostatic field is enclosed within a relatively continuous structure (12a,14a) having a film resistor (30,34) disposed on the surface of said structure encompassing said field whereby a voltage potential difference (32,36) impressed across the film resistor causes said field to be generated.
Claim 2
Dependent Claim
62 words
Ion mobility deteetor having an enclosed volume (12,14) in which an electrostatic field operates on ions, characterized in that the electrostatic field is enclosed within a relatively continuous structure (12a,14a) having a film resistor (30,34) disposed on the surface of said structure encompassing said field whereby a voltage potential difference (32,36) impressed across the film resistor causes said field to be generated.
Claim 3
Dependent Claim
22 words
Ion mobility detector as claimed in claim 1, characterized in that the relatively continuous structure is a cylindrical tubular structure (12a, 14a).
Claim 4
Dependent Claim
28 words
Ion mobility detector as claimed in claim 2, characterized in that the film resistor (30,34) is film disposed on the inside surface of the cylindrical tubular structure (12a,14a).
Claim 5
Dependent Claim
52 words
Ion mobility detector as claimed in claim 1, characterized in that the cylindrical tubular structure (12a, 14a) comprises first and second tubes (12a,14a) communicating with each other through an ion mobility grid (16), the first tube (12a) encompassing a reaction region (12) and the second tube (14a) encompassing a drift region (14).
Claim 6
Dependent Claim
23 words
Ion mobility detector as claimed in claim 4, characterized in that each of said tubes (12a, 14a) is made of a dielectric material.
Claim 7
Dependent Claim
29 words
Ion mobility detector as claimed in claim 5, characterized in that the dielectric material is chosen from the group which includes alumina, mullite, ceramics, quartz, magnesium oxide and glass.
Claim 8
Dependent Claim
29 words
Ion mobility detector as claimed in claim 3, characterized in that the film resistor (30,34) is made from a glass-fritted resistance material fired on the cylindrical tubular structure (12a,14a).
Claim 9
Dependent Claim
22 words
Ion mobility detector as claimed in claim 3, characterized in that the film resistor (30,34) has a hard relatively impervious exterior surface.
Claim 10
Dependent Claim
33 words
Ion mobility detector as claimed in claim 7, characterized in that there is provided a relatively continuous film heating resistor (15) coated on the exterior surface of the cylindrical tubular structure (12a, 14a).
Claim 11
Dependent Claim
53 words
Ion mobility detector as claimed in claim 3, characterized in that said ion mobility detector requires a predetermined amount of heating energy generated'within the cylindrical tubular structure (12a,14a) for optimized operation, the resistance of the film resistor (30,34) being selected to provide said heating energy'when the voltage potential difference (32,36) is impressed thereacross.
References Cited (Backward Citations)
No citation records indexed.
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