Radiant energy – Invisible radiant energy responsive electric signalling – Including a radiant energy responsive gas discharge device
Patent
1979-12-05
1981-01-27
Willis, Davis L.
Radiant energy
Invisible radiant energy responsive electric signalling
Including a radiant energy responsive gas discharge device
G01T 118
Patent
active
042477751
ABSTRACT:
Disclosed is a small portable extremely rugged charger for existing pockeized type radiation dosimeters. The charger is comprised of a rectangularly shaped housing which contains a piezoelectric charging circuit which is manually operated by a handle to produce a relatively high charging voltage. The charging voltage is coupled to a charging post mounted on a removable cover which is adapted to be selectively rotated so that the underside of the charging post is exposed to light from one of two light windows in the housing whereupon the dosimeter scale may be viewed by either direct or reflected light from any source available. The piezoelectric charging circuit is comprised of a pair of axially aligned cylinders of piezoelectric material mounted in a fulcrum type frame having a beam lever element in contact with one of the cylinders. A spring bias element is connected to the beam lever element and is actuated by a cam attached to the handle which when rotated acts upon the spring to cause an axial compressional force to be applied to the cylinders which thereby produce the required charging voltage.
REFERENCES:
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patent: 2751544 (1956-06-01), Stirnkorb
patent: 2753463 (1956-07-01), Stout et al.
patent: 2759138 (1956-10-01), Andrews
patent: 2770765 (1956-11-01), Negus
patent: 2898472 (1959-08-01), Hollmann
patent: 3017511 (1962-01-01), Landsverk et al.
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patent: 3193749 (1965-07-01), Grimm et al.
patent: 3341761 (1967-12-01), Bryer
Edelberg Nathan
Howell Janice A.
Kanars Sheldon
Murray Jeremiah G.
The United States of America as represented by the Secretary of
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