Chunghwa Picture Tubes, Ltd.

Li-Na Chang

Chi-Neng Mo

Huo-Chen Tsai

Shih-Chung Chang

Wen-Chih Sung

Yung-Wei Yang

Pei-Kuang Lin

The present invention is to provide an electron gun of a monochromic CRT comprising at least two electron emission sources (e.g., cathodes) for emitting beams having a small beam spot size and being adapted to impinge on the same spot of a screen of the monochromic CRT after having been focused by a focusing lens or common lens in the electron gun. As an end, the resolution, focusing quality and brightness of the screen of the monochromic CRT are improved.

Electron gun of monochromic CRT

A drilling machine primarily employed in drilling holes in a glass plate comprises a vacuum suction table for putting a glass plate thereon, a plurality of fasteners to fasten vacuum suction table on the glass plate, an adjusting screw for precisely positioning drill seat to above a desired position, a motor drive to provide a power for enabling drill to move downwardly to drill, and a lubricating device for feeding lubricating oil on drill during operation for decreasing drill temperature and dust occurred. With the drilling machine, a quality product with high precision as well as increasing efficiency and safety are realized.

Drilling machine with vacuum suction table

Growing community of inventors

Taoyuan Hsien, Taiwan

Li-Na Chang