Patent US4500295A successfully refreshed from Google Patents.
US4500295A
Expired / Lapsed
US
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Personal alpha contamination simulator and detector
Assignee: United States Department of the Navy
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Filing: 1983-05-26
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Granted: 1985-02-19
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Expires: 2003-05-26
Abstract
Abstract A simulated radiation source and a compatible detector system are disclos The combination is useful in training for detecting alpha radiation contamination. A flexible, soft iron plate or first permanent magnet in the detector system responds to a second magnet that is employed to represent an alpha radiation source. Where the first permanent magnet is used, an iron member may be adopted in lieu of the second magnet. The simulated source is affixed to the subject's clothing or body. When the detector system is brought into proximity with the simulated radiation source, the soft plate or first magnet responds and affects a strain gage which in turn provides an electronic indication.
Inventors
- 👤 Richard H. Insinger, III
- 👤 Alfred H. Rodemann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:41
CPC Classifications
G; G09; G09B; G09B9/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
109 words
Apparatus useful as a portable radiation comtamination training device that simulates detection of alpha radiation on personnel and clothing by reacting to a magnet that has been purposefully placed on a personnel subject, comprising: a housing simulating in appearance the probe of an operational alpha radiation detection device, having a portion designed to face said subject during said training; a deformable, magnetically responsive material mounted within said housing adjacent said portion; gage means fixedly coupled to said material for providing an electrical signal indicative of deformation in said material; electronic means coupled to said signal for preparing said signal to be coupled to said operational alpha radiation detection device.
Claim 2
Dependent Claim
109 words
Apparatus useful as a portable radiation comtamination training device that simulates detection of alpha radiation on personnel and clothing by reacting to a magnet that has been purposefully placed on a personnel subject, comprising: a housing simulating in appearance the probe of an operational alpha radiation detection device, having a portion designed to face said subject during said training; a deformable, magnetically responsive material mounted within said housing adjacent said portion; gage means fixedly coupled to said material for providing an electrical signal indicative of deformation in said material; electronic means coupled to said signal for preparing said signal to be coupled to said operational alpha radiation detection device.
Claim 3
Dependent Claim
15 words
The apparatus of claim 1 wherein said magnetically responsive material is a deformable iron plate.
Claim 4
Dependent Claim
14 words
The apparatus of claim 1 wherein said deformable, magnetically responsive material is a magnet.
Claim 5
Dependent Claim
46 words
The apparatus of claim 1 wherein said portion is a flat, solid surface; and said apparatus further comprises a flexible panel mounted within said housing adjacent said portion of said housing designed to face said subject, and on which said deformable, magnetically responsive material is mounted.
Claim 6
Dependent Claim
13 words
The apparatus of claim 4 wherein said flexible panel is a plastic film.
Claim 7
Dependent Claim
26 words
The apparatus of claim 1 wherein said portion includes at least one aperture, and said magnetically responsive material is mounted in covering relationship to said aperture.
Claim 8
Dependent Claim
109 words
A simulated Radiac probe, comprising: a Radiac probe housing, having a face; a ferrous plate within said housing having its major surface parallel to said face; a strain gage attached to said plate that is sensitive to deflections in said plate, having an electrical output to provide a signal proportional to said deflections; amplification means coupled to said electrical output for adapting said signal for coupling to an operational Radiac probe fitting; whereby a magnetic field may be used to simulate alpha radiation in training for detection of radiation contaminated clothing and personnel; said signal is indicative of said field; and, said operational Radiac is thereby simulated for training.
Claim 9
Dependent Claim
109 words
A simulated Radiac probe, comprising: a Radiac probe housing, having a face; a ferrous plate within said housing having its major surface parallel to said face; a strain gage attached to said plate that is sensitive to deflections in said plate, having an electrical output to provide a signal proportional to said deflections; amplification means coupled to said electrical output for adapting said signal for coupling to an operational Radiac probe fitting; whereby a magnetic field may be used to simulate alpha radiation in training for detection of radiation contaminated clothing and personnel; said signal is indicative of said field; and, said operational Radiac is thereby simulated for training.
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) | 1988-02-19 | 1988-08-20 | 1989-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-02-19 | 1992-08-20 | 1993-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-02-19 | 1996-08-20 | 1997-02-19 | $7700.00 | Window Closed / Lapsed |