US3952196A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiation detection apparatus
Assignee: Detector Electronics Corp
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Filing: 1975-02-05
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Granted: 1976-04-20
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Expires: 1995-02-05
Abstract
Abstract A device for determining that the optical surfaces through which radiation must travel from a hazardous area of radiation to a radiation detector are free from radiation absorbing material or radiation blocking material, the device including an enclosure for commonly housing both a source of and a detector of radiation while isolating the same from each other, preventing radiation transmission within the housing from the source to the detector, such enclosure defining a path for radiation emission from the source outwardly from the housing to a reflective surface or surfaces which surface or surfaces will redirect the radiation back to the detector through the same optical surfaces that radiation from the hazardous area must pass. The relective surface or surfaces may be integral with the enclosure or may be remotely located therefrom.
Inventors
- 👤 Theodore E. Larsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:06
CPC Classifications
G; G08; G08B; G08B17/00; G08B17/12; G01; G01N; G01N21/00; G01N21/17; G01N21/47; G01N21/49; G01N21/53; G01N21/534
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
145 words
An improvement in radiation detection apparatus, such improvement including: a. a longitudinally extending housing; b. means for mounting a source of radiation in said housing; c. means for mounting a detector of radiation in said housing; d. radiation shielding means extending longitudinally within said housing and arranged between said radiation source and said detector means to prevent radiation transmission therebetween within said housing; e. radiation transmitting passages provided by said housing and said shielding means for the emission of radiation from said source and the reception of the source radiation by said detector; and, f. reflective means positioned adjacent said housing and spaced from said shielding means to receive radiation from said source and reflect the same to said detector, whereby the radiation transmitting passage permitting the reception of radiation by said detector is monitored to determine its ability to transmit radiation to said detector.
Claim 2
Dependent Claim
145 words
An improvement in radiation detection apparatus, such improvement including: a. a longitudinally extending housing; b. means for mounting a source of radiation in said housing; c. means for mounting a detector of radiation in said housing; d. radiation shielding means extending longitudinally within said housing and arranged between said radiation source and said detector means to prevent radiation transmission therebetween within said housing; e. radiation transmitting passages provided by said housing and said shielding means for the emission of radiation from said source and the reception of the source radiation by said detector; and, f. reflective means positioned adjacent said housing and spaced from said shielding means to receive radiation from said source and reflect the same to said detector, whereby the radiation transmitting passage permitting the reception of radiation by said detector is monitored to determine its ability to transmit radiation to said detector.
Claim 3
Dependent Claim
26 words
The structure set forth in claim 1 and said housing extending longitudinally beyond said shielding means, said reflective means being provided by said extending housing portion.
Claim 4
Dependent Claim
23 words
The structure set forth in claim 1 and said reflective means being carried by said housing and extending across said radiation transmitting passages.
Claim 5
Dependent Claim
24 words
The structure set forth in claim 1 and a lens member arranged in covering relation to said passages and maintaining the radiation shield therebetween.
Claim 6
Dependent Claim
33 words
The structure set forth in claim 4 and said shielding member being in radiation shielding position with said lens to maintain the shielded relation between said source and said detector within said housing.
Claim 7
Dependent Claim
37 words
The structure set forth in claim 5 and said reflective means being arranged on one side of said lens, said source and detector being arranged interiorally of said housing and on the opposite side of said lens.
Claim 8
Dependent Claim
59 words
The structure set forth in claim 1 and said shielding means surrounding one of said source and detector means and extending longitudinally within said housing, one of said radiation transmitting passages being defined interiorally of said shielding member, the other of said passages being defined by the exterior surface of said shielding member and the interior of said housing.
Claim 9
Dependent Claim
34 words
The structure set forth in claim 7 and a lens member carried by said housing and forming a radiation blocking seal with said shielding member whereby said lens extends across said radiation transmitting passages.
Claim 10
Dependent Claim
32 words
The structure set forth in claim 8 and said reflective means being arranged on one side of said lens, said source and detector being arranged on the other side of said lens.
Claim 11
Dependent Claim
25 words
The structure set forth in claim 9 and said housing having a portion extending beyond said lens, said reflective means being arranged on said housing.
Claim 12
Dependent Claim
22 words
The structure set forth in claim 10 and said reflective means being arranged on said housing and extending across said transmitting passages.
Claim 13
Dependent Claim
25 words
The structure set forth in claim 1 and said source of radiation and said detector of radiation being capable of transmitting and receiving ultraviolet respectively.
Claim 14
Dependent Claim
25 words
The structure set forth in claim 1 and said source of radiation and said detector of radiation being capable of transmitting and receiving infrared respectively.
Claim 15
Dependent Claim
26 words
The structure set forth in claim 1 and said source of radiation and said detector of radiation being capable of transmitting and receiving visible radiation respectively.
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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) | 1979-04-20 | 1979-10-20 | 1980-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-04-20 | 1983-10-20 | 1984-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-04-20 | 1987-10-20 | 1988-04-20 | $7700.00 | Window Closed / Lapsed |