US5286973A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiation mapping system
Assignee: Iteris Inc
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Filing: 1991-11-13
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Granted: 1994-02-15
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Expires: 2011-11-13
Abstract
Abstract A high-energy radiation survey system capable of imaging and determining the distances of, sources of incident radiation and of determining the energy of such radiation, incorporating a shaped radiation detector shield and detector configured therein for low-noise collimation of the radiation for directional mapping. The system is capable of being mounted on a remotely controllable vehicle and of being operated from an operator's station remote from radiation hazards. The system can be used to generate high resolution radiation dose maps superimposed on a real-time video image of a room or other areas in nuclear power plants and other facilities using radioactive material.
Inventors
- 👤 George B. Westrom
- 👤 Robert E. Carlton
- 👤 Lloyd R. Tripp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:41
CPC Classifications
G; G01; G01T; G01T7/00; G01T1/00; G01T1/29; G01T1/2914; G01T1/2921
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
118 words
A radiation detection and mapping system, comprising: means for detecting radiation from sources of radiation within a restricted solid angle; means for shielding said means for detecting radiation so that incident radiation is substantially uniformly attenuated over all directions other than the restricted solid angle, said means for shielding having a substantially uniform thickness when measured from points along a central axis of symmetry of said means for detecting radiation; means for determining the distance between the means for detecting radiation and the sources of radiation; means for visually imaging the sources of radiation and their environment; and means for moving the detecting means, distance determining means and imaging means through a range of altitudinal and azimuthal angles.
Claim 2
Dependent Claim
118 words
A radiation detection and mapping system, comprising: means for detecting radiation from sources of radiation within a restricted solid angle; means for shielding said means for detecting radiation so that incident radiation is substantially uniformly attenuated over all directions other than the restricted solid angle, said means for shielding having a substantially uniform thickness when measured from points along a central axis of symmetry of said means for detecting radiation; means for determining the distance between the means for detecting radiation and the sources of radiation; means for visually imaging the sources of radiation and their environment; and means for moving the detecting means, distance determining means and imaging means through a range of altitudinal and azimuthal angles.
Claim 3
Dependent Claim
19 words
The system of claim 1, further comprising a means for remotely moving said system over a range of locations.
Claim 4
Dependent Claim
19 words
The system of claim 1, further comprising a means for detecting ambient radiation over a substantially unrestricted solid angle.
Claim 5
Dependent Claim
22 words
The system of claim 1, wherein said means for detecting radiation includes means for varying the size of said restricted solid angle.
Claim 6
Dependent Claim
22 words
The system of claim 1, further comprising means for indicating the approximate center of the restricted solid angle of the detection means.
Claim 7
Dependent Claim
63 words
A radiation detection system comprising: means for detecting radiation from a restricted solid angle; and means for shielding said detecting means so that incident radiation is substantially uniformly attenuated over all directions other than the restricted solid angle, said means for shielding having a substantially uniform thickness when measured from points along a central axis of symmetry of said means for detecting radiation.
Claim 8
Dependent Claim
63 words
A radiation detection system comprising: means for detecting radiation from a restricted solid angle; and means for shielding said detecting means so that incident radiation is substantially uniformly attenuated over all directions other than the restricted solid angle, said means for shielding having a substantially uniform thickness when measured from points along a central axis of symmetry of said means for detecting radiation.
Claim 9
Dependent Claim
24 words
The system of claim 6, wherein the detecting means comprises a scintillator counter and a photomultiplier, said photomultiplier optically bonded to said scintillator counter.
Claim 10
Dependent Claim
26 words
The system of claim 6, wherein the means for shielding provides substantially uniform attenuation of gamma radiation over all angles other than the restricted solid angle.
Claim 11
Dependent Claim
22 words
The system of claim 6, wherein said means for detecting radiation includes means for varying the size of said restricted solid angle.
References Cited (Backward Citations)
US2562929A
Cited
US2935614A
Cited
US3008046A
Cited
US3739171A
Cited
EP0031732A2
Cited
US4421981A
Cited
EP0188973A1
Cited
US5025150A
Cited
US4959547A
Cited
EP0424308A2
Cited
EP0425333A1
Cited
US5057690A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-02-14 | 1997-08-16 | 1998-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-02-14 | 2001-08-16 | 2002-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-02-14 | 2005-08-16 | 2006-02-15 | $7700.00 | Window Closed / Lapsed |