Cathode-ray tube having detentioning rod assembly for a tension mask frame

摘要

A cathode-ray tube includes a tension mask attached to a rectangular support frame assembly that has two long sides paralleling a central major axis thereof and two short sides paralleling a central minor axis thereof. The frame assembly includes two first members, having oppositely disposed ends, paralleling the major axis, and two resilient U-shaped second members, having a first leg and a second leg attached to the oppositely disposed ends of the first members, paralleling the minor axis. Each of the first members has a compliant portion and a base portion. The mask is attached to the distal ends of the compliant portion. A detensioning rod assembly is disposed between the first and second legs of each of the second members to facilitate varying the tension of the mask.