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Cartridge for a game machine

  • US 6,628,529 B2
  • Filed: 08/21/2002
  • Issued: 09/30/2003
  • Est. Priority Date: 08/22/2001
  • Status: Expired due to Term
First Claim
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1. A cartridge for a game machine, the cartridge being detachably mountable to a game machine having a connector and a grounding terminal in connection with a recess for receiving the cartridge, the cartridge comprising:

  • a housing including an upper half and a lower half, the housing having an open end face at which to mount the cartridge to the connector in the game machine;

    a substrate accommodated in the housing, the substrate having an external connection terminal exposed through the open end face, a circuit pattern, and a ground electrode;

    a semiconductor element mounted on the substrate; and

    a shielding element accommodated within the housing, the shielding element covering a substantial portion of at least one principal face of the substrate and being electrically connected to the ground electrode, wherein the housing has an opening in a principal face facing the ground electrode on the substrate and the shielding element to allow the shielding element to be partly exposed through the opening, the shielding element has a shield convex, the shield convex protruding and being exposed through the opening, and when the cartridge is mounted in the recess, the shield convex is electrically connected to the ground electrode through the opening, thereby removing unwanted radiation of electromagnetic waves occurring on the substrate.

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