US3590245A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and instrument for reading out thermoluminescence
Assignee: Panasonic Holdings Corp
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Filing: 1969-08-18
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Granted: 1971-06-29
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Expires: 1989-08-18
Abstract
Abstract A method of reading out the dosage of radiation to which a dosimeter was previously exposed, by blowing hot air against the exposed dosimeter to heat the same and reading out the dosage of radiation from the thermoluminescence emitted by said heated dosimeter, and an instrument for practicing the above-described method, said method and said instrument being capable of reading out the thermoluminescence of a dosimeter in a simple manner with high reliability and accuracy, irrespective of the shape of dosimeter.
Inventors
- 👤 Hajimu Oonishi
- 👤 Osamu Yamamoto
- 👤 Tadaoki Yamashita
- 👤 Hidetsugu Kawabata
- 👤 Saburo Kitamura
- 👤 Yutaka Higashida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:14
CPC Classifications
G; G01; G01T; G01T1/00; G01T1/02; G01T1/10; G01T1/11; G01T1/115
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
35 words
A thermoluminescence readout instrument as defined in claim 1, in which Means is provided by which the hot air is blown against the dosimeter for a predetermined period in each cycle of thermoluminescence readout operation.
Claim 2
Dependent Claim
73 words
A thermoluminescence readout instrument as defined in claim 1, in which said thermoluminescence detector is disposed in the lower portion of the instrument, whereas said air heating means is arranged in such a manner that the hot air is blown downwardly, and a dosimeter inserting plate for carrying the dosimeter thereon is interposed between said thermoluminescence detector and said air heating means so that said dosimeter may be heated above said thermoluminescence detector.
Claim 3
Dependent Claim
35 words
A thermoluminescence readout instrument as defined in claim 1, in which means is provided for adjusting the flow rate of the hot air so as to control the rate of temperature rise of said dosimeter.
Claim 4
Dependent Claim
35 words
A thermoluminescence readout instrument as defined in claim 1, in which means is provided for adjusting the temperature of said air heating means so as to control the rate of temperature rise of said dosimeter.
Claim 5
Dependent Claim
18 words
A thermoluminescence readout instrument as defined in claim 1, in which means is provided for preheating the dosimeter.
Claim 6
Dependent Claim
60 words
A thermoluminescence readout instrument as defined in claim 1, in which a calibration light source is provided in the thermoluminescence detecting position in association with the dosimeter inserting means and means is provided for removing said light source from said position at the same time when the dosimeter is inserted to the thermoluminescence detecting position by said dosimeter inserting means.
Claim 7
Dependent Claim
53 words
A thermoluminescence readout instrument as defined in claim 1, in which said air heating means and said fan are simultaneously connected to a power source at the beginning of each cycle of thermoluminescence readout operation and are simultaneously disconnected from said power source by a timer upon completion of each thermoluminescence readout operation.
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) | 1974-06-28 | 1974-12-28 | 1975-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-28 | 1978-12-28 | 1979-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-28 | 1982-12-28 | 1983-06-29 | $7700.00 | Window Closed / Lapsed |