| 摘要 |
TARGET SUPPORT FOR PROJECTION CATHODE RAY TUBE An improved target assembly 17 for a projection cathode ray tube 10 is provided wherein the target member 21 is protected from being inadvertently tilted, and thus the tube 10 defocused when subjected to shock loading. The target member 21 is supported by a shaft screw 35, which in turn is mounted on an adjustment pad 36 for initially tilting the target member 21 to focus the image. The positive locking means 40 includes external threads on the shaft screw 35 received by inside threads of a center aperture 38 in the adjustment pad 36. A locking nut 40 is utilized to jam the shaft screw 35 against the pad 36, and thereby load the cooperating threads. In addition, a threaded mounting stud 23 of the target member 21 engages internal threads 46 of the shaft screw 35 at the opposite end, and a locking set screw 45 inside the shaft engages these internal threads 46 and is tightened against the stud 23 to load these threads 46.
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