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:
Oct. 09, 2001
Filed:
Feb. 11, 2000
Gear Huang, Taipei, TW;
Silitek Corporation, Taipei, TW;
Abstract
A dustproof and droplet-proof keyswitch is provided. The keyswitch includes a base plate with at least one stage formed thereon, each stage having a step portion formed at a top part; an elastic member arranged on the step portion; a key cap mounted on the elastic member and having a plunger inserting into the stage. The plunger has an elastic plate clamped between a pair of grooves and having a hook on a lower end thereof; the hook having a beveled lower end latched with the stage when the key cap is released. The stage has at least one projecting rib on an inner side thereof corresponding to at least one notch on the plunger to provide a clamping effect. Therefore, the keyswitch can be used under severe conditions such as in a dusty environment or when the keyboard has spilled on it a liquid such as tea or coffee.