Radiant energy – Calibration or standardization methods
Patent
1982-09-21
1985-03-19
Howell, Janice A.
Radiant energy
Calibration or standardization methods
2505061, G01D 1800
Patent
active
045061556
ABSTRACT:
Method and apparatus of determining the radioactivity of a sample. The sample is contained in a vial located within a cannister having a body portion releasably engaged with a bottom portion. The apparatus includes a chuck for engaging and holding the bottom portion of the cannister and a lifting ring engageable with the body portion so that rotation of the lifting ring controls engagement and disengagement between the body and bottom portions of the cannister. After the chuck and cannister have been placed in a calibration device, the body portion is disengaged from the bottom portion by rotation of the lifting ring. The body portion is then moved by lifting the lifting ring so that the container is exposed and the radioactivity of the sample within the container can be measured. Subsequent lowering and rotation of the lifting ring reengages the body with the bottom of the cannister so that the sample is again shielded. The cannister and chuck are then removed from the calibration device.
REFERENCES:
patent: 4084097 (1978-04-01), Czaplinski et al.
patent: 4144461 (1979-03-01), Glasser et al.
patent: 4268755 (1981-05-01), Weber et al.
patent: 4382512 (1983-05-01), Furminger
Allardice, Jr. William D.
Suzuki Arata
Capintec Inc.
Howell Janice A.
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