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. 05, 2000
Filed:
Dec. 30, 1999
Huo-Lu Tsai, Taichung Hsien, TW;
Abstract
A computer key switch, which includes a hollow key switch base supported on a membrane circuit above a frame, a rubber cone mounted on the membrane circuit inside the key switch base, and a key cap supported on the rubber cone for depressing with the finger to compress the rubber cone in triggering the membrane circuit, wherein the key cap has a plunger of H-shaped cross section supported on the rubber cone, and two hook rods symmetrically longitudinally suspended in open spaces defined in the plunger at two opposite sides, the plunger has longitudinally extended guide ribs formed integral with the periphery thereof and disposed in contact with the inside wall of the key switch base to guide vertical movement of the key cap relative to the key switch base; the key switch base has two hooks bilaterally disposed on the inside at the top for stopping hooks at the hook rods to limit up stroke of the key cap.