Tension mask and tension mask and frame assembly for color cathode ray tube
US6407490B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 3, 2000 |
| Grant date | Jun 18, 2002 |
| Priority date | — |
| Expiry date | Mar 3, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J2229/0761
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A tension mask and a tension mask and frame assembly for a color cathode ray tube (CRT). The tension mask and frame assembly includes: a tension mask including an aperture portion having a series of strips disposed at predetermined intervals to define slits, and tie bars interconnecting adjacent strips, and a non-aperture portion having side members disposed parallel to the strips on both sides of the aperture portion, wherein strips near the side of the aperture portions and the side members have a predetermined partial pin cushion curvature, and a frame including a pair of support members disposed parallel to each other, for supporting the tension mask under tension acting in the vertical direction of the strips, such that a tension acts on the horizontal direction of the tension mask through the tie bars, due to the curvature of the tension mask, and a pair of elastic members fixed to both ends of the support members for supporting the support members.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.