The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 28, 2000
Filed:
Jul. 08, 1999
Wen-Chih Sung, Taipei, TW;
Huo-Chen Tsai, Taipei, TW;
Chunghwa Pictures Tubes, Ltd., Taipei, TW;
Abstract
A punching machine for cutting glass having a punch body comprises a hollow punch holder on a top side of the punch body; a hollow punch on a bottom side of the punch body having a cavity on a front end and a circumferential portion with a plurality of sand formed thereon surrounding an outer surface of the cavity an elastic member; and a knockout pin provided through the punch holder and the punch having one end urged against one end of the elastic member in the punch holder and the other end extended downwardly from the cavity in a stored position; whereby as the circumferential portion is cutting through a glass surface, the knockout pin is urging against a portion of glass until the portion is separated from the glass completely.