US3735134A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermoluminescent radiation detector
Assignee: VIC ACQUISITION Corp
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Filing: 1970-04-10
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Granted: 1973-05-22
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Expires: 1990-04-10
Abstract
Abstract Radiation detector having hot-pressed thermoluminescent material disposed in close proximity to a heater element, both supported by electrical connecting pins passing through a base of a glass envelope enclosing the same in a gaseous environment of high thermal conductivity or of an open glass cylinder leaving the same exposed in an air environment. Combination may be heater wire threaded through cylinder of hot-pressed thermoluminescent material or flat planar heater and planar chip of hot-pressed thermoluminescent material.
Inventors
- 👤 A Lucas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:15
CPC Classifications
G; G01; G01T; G01T1/00; G01T1/02; G01T1/10; G01T1/11
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
137 words
A thermoluminescent radiation detector having a transparent envelope enclosing: an environment of a gas selected from the group consisting of helium and air; an electrical heating element; electrical connecting means passing through the envelope for connecting the heating element to a source of electrical power; and a preformed cylindrically-shaped member made of hot-pressed thermoluminescent material selected from the group consisting of manganese-activated calcium fluoride and lithium fluoride, the member having a coaxial opening passing therethrough through which the electrical heating element is threaded. two preformed cylindrically-shaped, hot-pressed members made respectively of manganese-activated calcium fluoride and lithium fluoride, each of predetermined length having a coaxial opening passing therethrough, through which the electrical heating element is threaded, each member providing a separate glow curve peak to enable determination of the type of incident radiation that has struck the detector.
Claim 2
Dependent Claim
137 words
A thermoluminescent radiation detector having a transparent envelope enclosing: an environment of a gas selected from the group consisting of helium and air; an electrical heating element; electrical connecting means passing through the envelope for connecting the heating element to a source of electrical power; and a preformed cylindrically-shaped member made of hot-pressed thermoluminescent material selected from the group consisting of manganese-activated calcium fluoride and lithium fluoride, the member having a coaxial opening passing therethrough through which the electrical heating element is threaded. two preformed cylindrically-shaped, hot-pressed members made respectively of manganese-activated calcium fluoride and lithium fluoride, each of predetermined length having a coaxial opening passing therethrough, through which the electrical heating element is threaded, each member providing a separate glow curve peak to enable determination of the type of incident radiation that has struck the detector.
Claim 3
Dependent Claim
100 words
A thermoluminescent radiation detector having a transparent envelope enclosing: an environment of a gas selected from the group consisting of helium and air; an electrical heating element; electrical connecting means passing through the envelope for connecting the heating element to a source of electrical power; and two preformed cylindrically-shaped, hot-pressed members made respectively of manganese-activated calcium fluoRide and lithium fluoride, each of predetermined length having a coaxial opening passing therethrough, through which the electrical heating element is threaded, each member providing a separate glow curve peak to enable determination of the type of incident radiation that has struck the detector.
Claim 4
Dependent Claim
100 words
A thermoluminescent radiation detector having a transparent envelope enclosing: an environment of a gas selected from the group consisting of helium and air; an electrical heating element; electrical connecting means passing through the envelope for connecting the heating element to a source of electrical power; and two preformed cylindrically-shaped, hot-pressed members made respectively of manganese-activated calcium fluoRide and lithium fluoride, each of predetermined length having a coaxial opening passing therethrough, through which the electrical heating element is threaded, each member providing a separate glow curve peak to enable determination of the type of incident radiation that has struck the detector.
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) | 1976-05-21 | 1976-11-20 | 1977-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-21 | 1980-11-20 | 1981-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-21 | 1984-11-20 | 1985-05-22 | $7700.00 | Window Closed / Lapsed |