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Method of sterilizing using a rotary disk-ball valve control system

  • US 4,003,703 A
  • Filed: 10/18/1974
  • Issued: 01/18/1977
  • Est. Priority Date: 10/18/1974
  • Status: Expired due to Term
First Claim
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1. A method for sterilizing an article in a chamber operatively connected to a plurality of ball valves provided with rotary means for opening and closing said ball valves, comprising:

  • programming a disc having a plurality of posts depending therefrom by providing said disc with a plurality of slots;

    rotating said programmed disc in slidable contact with a plurality of switches to cause said switches to open and close in a predetermined sequence determined by said slots and to cause said posts to contact said ball valve rotary means to open and close said ball valves in a predetermined sequence determined by said posts;

    admitting a gaseous sterilizing agent to said chamber;

    maintaining the temperature of said sterilizing agent in said chamber within a preselected range of a set point temperature for a predetermined interval of time;

    exhausting said sterilizing agent from the chamber andcontrolling the sequence and duration of said admitting, maintaining and exhausting steps in response to said predetermined sequence in which said switches are opened and closed and said posts contact said rotary means in response to said rotation of said programmed disc.

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