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Three-way connector for liquid exchange

  • US 4,781,702 A
  • Filed: 06/16/1987
  • Issued: 11/01/1988
  • Est. Priority Date: 06/20/1986
  • Status: Expired due to Fees
First Claim
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1. A three-way connector for the exchange of fluids, of the type having a valve body, a connection tube, a supply tube, a drain tube, and means for holding one end of each of the tubes in the valve body, wherein the improvement comprises:

  • a chamber defined by said valve body, said one end of said connection tube and of said drain tube opening out into said chamber;

    a tubular duct extending from said correction tube having an end projecting into said chamber and axially aligned with said one end of said supply tube;

    a diaphragm closing said one end of said supply tube; and

    means for axially displacing said one end of said supply tube between a first position wherein said end of said supply tube is remote from said end of said tubular duct and said connection tube communicates with said drain tube for fluid exchange, and a second position wherein said one end of said supply tube is in proximity to said end of said tubular duct and said diaphragm is pierced by said end of said tubular duct, thereby establishing communication between said supply tube and said connection tube.

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