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:
Dec. 23, 1997
Filed:
May. 22, 1996
Chi-Lung Tsai, Taipei Hsien, TW;
Silitek Corporation, Taipei, TW;
Abstract
A key switch fabrication method including the steps of: i) molding a rubber pad from silicone resin, and making a rubber key stitch body from the rubber pad by stamping; ii) printing the desired letter or pattern on the top side (10) of the rubber key switch body (1) thus obtained, then drying the printed key switch body 1 by baking; iii) adhering a liquid silicone rubber on the key switch body over the printing thereof by spot glueing to form a transparent key cap; vi) heating the key switch thus obtained from step iii) in a baking oven at 60.degree. C. for 5 minutes and then heating it at 120.degree. C. for 10 minutes to harden the key cap; and v) examining the quality of the finished key pad.