.~.~ For cathode-ray tube having plural targets {2}
373
.~.~.~ Targets radially about cathode
DEFINITION
Classification: 315/373
(under subclass 372) Subject matter wherein the targets are spaced from each other and arranged peripherally with respect to the cathode-ray beam source.
(1) Note. Included are switching tubes which sequentially rotate a cathode-ray beam from target to target. The deflection means may be a rotating electrostatic field or a combination of a magnetic field and a plurality of electrodes which cooperate with the cathode-ray beam to cause the beam to rotate in one direction or to be selectively controlled by the electrodes to allow the cathode-ray beam to stop in its rotary movement and strike a specific target.
(2) Note. The magnetic field necessary to obtain beam deflection in certain of the radial switching tubes may or may not be claimed.
SEE OR SEARCH THIS CLASS, SUBCLASS:
39.51+, for distributed parameter resonator type magnetrons having a plurality of electrodes peripherally arranged around the cathode-ray beam emitting electrode.
SEE OR SEARCH CLASS
313, Electric Lamp and Discharge Devices, 157+, for magnetic type discharge devices with a plurality of electrodes arranged concentrically about a cathode in the discharge device.
