DE2257778

The size of an X-ray beam is automatically adjusted in response to signals produced by a pair of continuously variable transducers, such as rotary potentiometers, mounted on a cassette holder. One of the transducers is preferably adjusted by a pivoted arm on the holder adapted to contact the side of...

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Bibliographische Detailangaben
Hauptverfasser:	HENNINGER, CAROLD R., READING, OHIO, US, LACKEY, RAY R., MADEIRA, OHIO, US
Format:	Patent
Sprache:	eng
Schlagworte:	ACCESSORIES THEREFOR APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM CINEMATOGRAPHY DIAGNOSIS ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY ELECTROGRAPHY HOLOGRAPHY HUMAN NECESSITIES HYGIENE IDENTIFICATION MEDICAL OR VETERINARY SCIENCE PHOTOGRAPHY PHYSICS SURGERY X-RAY TECHNIQUE
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Beschreibung
Zusammenfassung:	The size of an X-ray beam is automatically adjusted in response to signals produced by a pair of continuously variable transducers, such as rotary potentiometers, mounted on a cassette holder. One of the transducers is preferably adjusted by a pivoted arm on the holder adapted to contact the side of a cassette positioned on the holder. The other transducer is preferably adjusted, through suitable gearing, by a cable connected to one of a pair of jaws which center the cassette on the holder. The preferred embodiment also has a switch and means to open the switch when there is no cassette on the holder in order to prevent the X-ray generator from being activated.