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Computer system with externally accessible upgrade capability

  • US 5,530,620 A
  • Filed: 06/18/1993
  • Issued: 06/25/1996
  • Est. Priority Date: 08/02/1989
  • Status: Expired due to Term
First Claim
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1. A computer system with externally accessible upgrade capability, the system comprising:

  • a) an insertable, removable cartridge having a handle with a first slot, the handle being normally capable of relative movement with respect to a remainder of the cartridge;

    b) means for receiving the cartridge, the receiving means being in a predetermined portion of the computer system having an "on" power state and an "off" power state;

    c) means for ensuring that the cartridge cannot be inserted or removed when the predetermined portion of the system is in its "on" power state;

    d) a second slot in the computer system near the receiving means; and

    e) a lock mechanism including a first movable member and a second movable member which move integrally with respect to each other;

    wherein the first slot and the second slot are disposed at respective positions adjacent the lock mechanism when the cartridge is installed in the computer system so that, when the lock mechanism is in a "locked" position, the first movable member is contained within the first slot and the second movable member is contained within the second slot, so as to substantially prevent relative movement of the cartridge and remainder of the computer system and so as to substantially prevent relative movement of the handle and the remainder of the cartridge.

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