US4323778A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiation detectors supported by resilient optical coupler
Assignee: Coal Industry Patents Ltd
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Filing: 1978-06-02
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Granted: 1982-04-06
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Expires: 1998-06-02
Abstract
Abstract A sensor which is robust for use in an industrial environment. The sensor employs two scintillation crystals to offer a sufficient crystal volume and the crystals are optically coupled through a silicone rubber compound. The compound also allows the crystals to vibrate independently so that they do not shatter. A single photomultiplier detects scintillation occurring in all the crystals.
Inventors
- 👤 John S. Wykes
- 👤 Ian Adsley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:58
CPC Classifications
G; G01; G01T; G01T1/00; G01T1/16; G01T1/20
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
87 words
A radiation sensor comprising at least two scintillation crystals, resilient support means for supporting the at least two crystals in a desired operational configuration and detector means for detecting scintillations caused in the crystals by radiation impinging thereon, said support means being transparent to electromagnetic radiation within a frequency range including that of the scintillations, the support means further allowing the crystals to mechanically vibrate independently of one another, and having cutouts adjacent to the scintillation crystals along a path followed by incident radiation into the sensor.
Claim 2
Dependent Claim
87 words
A radiation sensor comprising at least two scintillation crystals, resilient support means for supporting the at least two crystals in a desired operational configuration and detector means for detecting scintillations caused in the crystals by radiation impinging thereon, said support means being transparent to electromagnetic radiation within a frequency range including that of the scintillations, the support means further allowing the crystals to mechanically vibrate independently of one another, and having cutouts adjacent to the scintillation crystals along a path followed by incident radiation into the sensor.
Claim 3
Dependent Claim
15 words
A radiation sensor as claimed in claim 1, wherein the resilient material comprises silicone rubber.
Claim 4
Dependent Claim
45 words
A radiation sensor as claimed in claim 1, wherein the crystals are coated with a material on their faces away from the detector means or away from other crystals, the material being opaque to electromagnetic radiation within a frequency range including that of the scintillations.
Claim 5
Dependent Claim
29 words
A radiation sensor as claimed in claim 1, wherein the support means is contained in a container opaque to radiation in the frequency range but transparent to incident radiation.
Claim 6
Dependent Claim
38 words
A radiation sensor as claimed in claim 4, wherein the container is contained in a further container which is impermeable to the incident radiation, but which has a transparent window situated in the path of the incident radiation.
Claim 7
Dependent Claim
22 words
A radiation sensor as claimed in claim 5, wherein a mechanical cushioning means is inserted between the container and the further container.
References Cited (Backward Citations)
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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) | 1985-04-05 | 1985-10-05 | 1986-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-04-05 | 1989-10-05 | 1990-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-04-05 | 1993-10-05 | 1994-04-06 | $7700.00 | Window Closed / Lapsed |