US4047035A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Baggage inspection device
Assignee: Heimann GmbH
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Filing: 1976-01-06
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Granted: 1977-09-06
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Expires: 1996-01-06
Abstract
Abstract A baggage inspection apparatus utilizing an X-ray generator for fluoroscopic examination of luggage and the like in which an X-ray detector is disposed in the beam path of the X-ray generator, operative to control switch means for switching off the high voltage of the X-ray beam generator in the event the intensity and/or duration of the X-ray radiation exceeds a predetermined value.
Inventors
- 👤 Manfred Dennhoven
- 👤 Claus Kunze
- 👤 Rainhard Kuehn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:16
CPC Classifications
G; G01; G01V; G01V5/00; G01V5/20; G01V5/22; H; H05; H05G; H05G1/00; H05G1/08; H05G1/26; H05G1/30; H05G1/38; H05G1/46
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
130 words
In a device for inspection of objects, particularly luggage and the like, by means of X-rays originating from an X-ray generator and penetrating the object being inspected to produce an image on a fluorescent screen, which image may be directly observable or, in combination with a television circuit, indirectly observable, the combination of an X-ray detector, a photo-conductive cell having an applied layer of X-ray sensitive luminescent material, said photo-conductive cell being disposed in the beam path of the X-ray generator directly at the beam outlet opening thereof, and means operatively connected to said X-ray detector and the high voltage circuit of the X-ray generator for switching off the high voltage generator in the event the intensity and/or duration of the emitted radiation at the detector exceeds a predetermined value.
Claim 2
Dependent Claim
130 words
In a device for inspection of objects, particularly luggage and the like, by means of X-rays originating from an X-ray generator and penetrating the object being inspected to produce an image on a fluorescent screen, which image may be directly observable or, in combination with a television circuit, indirectly observable, the combination of an X-ray detector, a photo-conductive cell having an applied layer of X-ray sensitive luminescent material, said photo-conductive cell being disposed in the beam path of the X-ray generator directly at the beam outlet opening thereof, and means operatively connected to said X-ray detector and the high voltage circuit of the X-ray generator for switching off the high voltage generator in the event the intensity and/or duration of the emitted radiation at the detector exceeds a predetermined value.
Claim 3
Dependent Claim
61 words
A device according to claim 1, wherein the X-ray detector is operable to create a current flow dependent on the dosage of the X-rays, and means including an integration amplifier to which such current flow is supplied, which is operative to cut-off the high voltage of the X-ray beam generator when a preset limit of its integrated output voltage is exceeded.
Claim 4
Dependent Claim
13 words
A device according to claim 1, wherein the luminescent material is zinc-cadmium sulphide.
Claim 5
Dependent Claim
61 words
A device according to claim 3, wherein the X-ray detector is operable to create a current flow dependent on the dosage of the X-rays, and means including an integration amplifier to which such current flow is supplied, which is operative to cut-off the high voltage of the X-ray beam generator when a preset limit of its integrated output voltage is exceeded.
Claim 6
Dependent Claim
19 words
A device according to claim 3, wherein the luminescent material is covered by a synthetic protective coating of resin.
Claim 7
Dependent Claim
38 words
A device according to claim 5, wherein the X-ray detector is a photo-conductive cell having an applied layer of X-ray sensitive luminescent material, which photo-conductive cell is disposed directly at the beam outlet opening of the X-ray generator.
References Cited (Backward Citations)
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US3567854A
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US3924133A
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US3783286A
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US3808444A
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US3894235A
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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) | 1980-09-05 | 1981-03-07 | 1981-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-05 | 1985-03-07 | 1985-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-05 | 1989-03-07 | 1989-09-06 | $7700.00 | Window Closed / Lapsed |