Computer keyswitch

DC
  • US 6,340,803 B1
  • Filed: 01/25/2001
  • Issued: 01/22/2002
  • Est. Priority Date: 01/25/2001
  • Status: Expired due to Term
First Claim
Patent Images

1. A computer keyswitch, comprising:

  • a bottom plate having a plurality of through holes formed therein, said bottom plate having a predetermined thickness and a plurality of clamping plates extending upwardly therefrom and respectively across said plurality of through holes;

    a membrane circuit overlaying said bottom plate and having a plurality of apertures formed therein in respective aligned relationship with said plurality of through holes and through which said plurality of clamping plates respectively extend;

    a base overlaying said membrane circuit, said base having an opening formed therethrough, said plurality of clamping plates extending into said opening, said base having a thickness greater than said predetermined thickness of said bottom plate;

    a resilient body disposed in said opening of said base and having a lower end disposed on said membrane circuit;

    a keycap having a mounting surface on a bottom side thereof, said resilient body having an upper end contacting said bottom side of said keycap; and

    , a first lever and a second lever disposed in a scissors arrangement between said mounting surface of said keycap and said bottom plate, said first and second levers having respective top ends assembled to said mounting surface and respective bottom ends formed with pivotal shafts, said pivotal shafts being respectively disposed in said through holes of said bottom plate and respectively captured therein by said plurality of clamping plates.

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