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Portable computer with detachable cartridge type interface device

  • US 5,139,439 A
  • Filed: 07/16/1991
  • Issued: 08/18/1992
  • Est. Priority Date: 07/16/1991
  • Status: Expired due to Fees
First Claim
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1. A portable computer comprising a computer casing, a socket connector being provided on said computer casing and being electrically connected to internal circuitry confined by said computer casing, a rectangular receiving space in said computer casing accessible from one side thereof, said socket connector projecting inwardly into said receiving space from an innermost end of said receiving space, said portable computer further comprising a detachable interface device having a rectangular casing, said rectangular casing having a size corresponding to that of said receiving space and a rear end provided with a rectangular opening, said rectangular casing confining an interface card therein, said interface card having one end aligned with said rectangular opening, said socket connector extending into said rectangular opening to engage said one end of said interface card so as to electrically connect said interface device and said internal circuitry, a base plate disposed on a bottom side of said receiving space and having a rectangular notch opening on an outermost end of said receiving space, said rectangular casing having a bottom wall with a downwardly extending projection slidingly received in said rectangular notch and said base plate and said bottom wall of said rectangular casing are provided with aligned threaded holes when said interface device inserted into said receiving space whereby a threaded member can be threaded into said aligned holes to lock said interface device into said computer casing, the front end of said rectangular casing being provided with socket means to permit electrical connection of said portable computer with an external device.

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