Shadow mask frame assembly

Details Shadow mask frame assembly Shadow mask frame assembly

1992-06-08

1995-02-28

Yusko, Donald J.

Electric lamp and discharge devices

Cathode ray tube

Shadow mask, support or shield

313406, 313407, H01J 2907

Patent

active

053940520

ABSTRACT:
A shadow mask frame assembly includes hook springs made of a plate-like bimetal member whose outer side is a high-expansion side and inner side is a low-expansion side, is fixed on a frame in the direction of an electron beam proceeding axis, and is nearly L-shaped to have a fixing portion welded to the base of the frame and a fitting portion having a fitting hole into which a stud pin on the inner side of a panel is fitted. The shadow mask frame assembly is not distorted or rotated with respect to the panel during the thermal expansion of a shadow mask due to electron beam collision, and is sufficiently compensated only in the direction of the electron beam's proceeding axis.

REFERENCES:
patent: 3660708 (1972-05-01), Nakamura et al.
patent: 3823336 (1974-07-01), Nakamura et al.
patent: 4315189 (1982-02-01), Goto et al.
patent: 4659958 (1987-04-01), D'Amato

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