US3566115A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiation dosimeter comprising a gas-evolving material
Assignee: Science Research Council
•
Filing: 1968-03-11
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Granted: 1971-02-23
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Expires: 1988-03-11
Abstract
Abstract A radiation dosimeter device comprising a container having a substantially constant volume, and a material within the container which material evolves a gas when irradiated by the radiation to be measured, the dose being determined by measuring the quantity or pressure of the gas after irradiation. The material is preferably polyethylene powder or film and the quantity or pressure may be determined by a permanently connected conventional Bourdon pressure gauge or by breaking the container into a constant volume apparatus connected to a pressure gauge or by measuring the ionization produced across electrodes sealed into the container.
Inventors
- 👤 Ann Swain
- 👤 Robert Sheldon
- 👤 Geoffrey Brian Stapleton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:54
CPC Classifications
G; G01; G01T; G01T1/00; G01T1/02; G01T1/04
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
19 words
A dosimeter device as claimed in claim 1 wherein said material is polyethylene in the form of a powder.
Claim 2
Dependent Claim
27 words
A dosimeter device as claimed in claim 1 whereIn the device is adapted to be broken inside a constant volume apparatus to determine the quantity of gas.
Claim 3
Dependent Claim
33 words
A dosimeter device as claimed in claim 1 having electrodes within the container connected to terminals outside the container whereby the degree of ionization and hence the quantity of gas may be determined.
Claim 4
Dependent Claim
34 words
A dosimeter device as claimed in claim 1 having electrodes within the container constituting a spark gap whereby the gas pressure may be determined by measuring the potential required to break down the gap.
Claim 5
Dependent Claim
25 words
A dosimeter device as claimed in claim 1 wherein a Bourdon gauge is connected to the container for continuously indicating the pressure within the container.
Claim 6
Dependent Claim
20 words
A dosimeter device as claimed in claim 1 wherein said material is polyethylene in the form of a thin film.
References Cited (Backward Citations)
US3253183A
Cited
US3174036A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |