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Method and valve for preventing unauthorized access

  • US 6,568,424 B1
  • Filed: 09/24/2001
  • Issued: 05/27/2003
  • Est. Priority Date: 01/01/1999
  • Status: Expired due to Term
First Claim
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1. A valve for controlling fluid flow therethrough into a container, comprising,a valve housing;

  • a flow control element which, in a first state, prevents fluid flow through said valve housing in a specified direction, and which, in a second state, allows fluid flow through said valve housing in said specified direction;

    dedicated actuator means sealed within one of the valve housing and the container to which said valve housing is attached, the dedicated actuator means selectively moves said flow control element from the first state to the second state only in response to a signal peculiarly dedicated to said dedicated actuator means; and

    external control means that provides said signal from an outside of the one of the valve housing and the container to operate said dedicated actuator means.

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