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US4220852A Expired / Lapsed US ⏱️ 0.0 years remaining

Radiation dosimeter assembly

Assignee: Westinghouse Electric Corp
•
Filing: 1978-09-13
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Granted: 1980-09-02
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Expires: 1998-09-13
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Abstract

Abstract In a radiation dosimeter assembly consisting of a wafer-like radiation dosimeter in combination with a mechanical support member the radiation dosimeter is secured within an aperture of the support member by disposing a protective film on either side of the dosimeter and securing the film to the support member via a high temperature adhesive or high temperature adhesive film. This assembly technique permits the annealing of the combination of the dosimeter and the support member to a temperature of about 300° C. which is the typical process for "erasing" extraneous radiation dosage stored in the dosimeter prior to the use of the radiation dosimeter/support combination for radiation measurements. The capability of annealing the total combination permits stock piling of preassembled radiation dosimeter/support member combinations for extended periods of time.

Inventors

  • 👤 John G. Seidel

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-05 16:47
CPC Classifications
G; G01; G01V; G01V5/00; G01V5/02; G01T; G01T1/00; G01T1/02; G01T1/10; G01T1/11; Y; Y10; Y10S; Y10S250/00; Y10S250/02

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 92 words
In a radiation monitoring apparatus for location beneath the surface of the earth to monitor radiation emanating therefrom, the combination of: a cup-like housing member; and a radiation dosimeter means consisting of a support means and a radiation dosimeter secured to said support means, said radiation dosimeter responding to heating by releasing stored radiation energy, said radiation dosimeter means being secured within said cup-like housing member; the materials of said cup-like housing member and said support member being capable of withstanding a temperature suitable for releasing stored radiation from said radiation dosimeter.
Claim 2
Dependent Claim 92 words
In a radiation monitoring apparatus for location beneath the surface of the earth to monitor radiation emanating therefrom, the combination of: a cup-like housing member; and a radiation dosimeter means consisting of a support means and a radiation dosimeter secured to said support means, said radiation dosimeter responding to heating by releasing stored radiation energy, said radiation dosimeter means being secured within said cup-like housing member; the materials of said cup-like housing member and said support member being capable of withstanding a temperature suitable for releasing stored radiation from said radiation dosimeter.
Claim 3
Dependent Claim 27 words
The apparatus of claim 1 wherein said cup-like housing member is a metal cup member of heavy gauge aluminum foil of between about 15 to 25 mils.
Claim 4
Dependent Claim 65 words
The apparatus of claim 1 wherein said support member has an aperture therein, said radiation dosimeter being a wafer-like member positioned within said aperture, and further including: thin protective metalized plastic film member disposed on either side of said aperture covering said entire aperture and extending onto the surface of said support member; and adhesive means for securing said protective films to said support member.
Claim 5
Dependent Claim 37 words
The apparatus of claim 3 wherein said metalized plastic film members consist of an aluminum layer of about 300 angstroms thickness disposed at intimate contact with a high tensile strength plastic layer of about 0.15 mils thickness.

References Cited (Backward Citations)

US3300643A Cited
US3471699A Cited
US3419720A Cited
US3883748A Cited
US4065972A Cited
US4053772A Cited
US4064436A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1983-09-02 1984-03-03 1984-09-02 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1987-09-02 1988-03-03 1988-09-02 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1991-09-02 1992-03-03 1992-09-02 $7700.00 Window Closed / Lapsed

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