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Gate valve

  • US 6,561,484 B2
  • Filed: 09/28/2001
  • Issued: 05/13/2003
  • Est. Priority Date: 12/14/2000
  • Status: Expired due to Fees
First Claim
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1. A gate valve, comprising:

  • a first valve plate having a valve opening;

    a second valve plate connected to said first valve plate via an expandable body; and

    an actuator provided between said first valve plate and said second valve plate, wherein said first valve plate and said second valve plate are both operative to be moved by the actuator away from each other or toward each other.

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