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Tube joint

  • US 4,666,190 A
  • Filed: 07/10/1985
  • Issued: 05/19/1987
  • Est. Priority Date: 07/13/1984
  • Status: Expired due to Term
First Claim
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1. A tube joint comprising:

  • (1) an axially extending tube joint body including a tubular guide, on at least one side thereof, for receiving a tube thereon, and a polygonal portion which is concentric with said guide extending therefrom, said guide having a groove in the circumference of an end portion thereof;

    (2) a clamping ring including a tubular portion which has external threads and a plurality of slits extending from said external threads to an end portion thereof in an axial direction, and a flange portion which extends from said tubular portion with a polygonal shaped bore to engage with said polygonal portion in a manner such that said polygonal portion is inserted into said polygonal shaped bore of said flange portion, said tubular portion being concentrically positioned around the guide of the tube joint body with a space therebetween which is large enough to receive the tube therein in such a manner that the end portion of the tubular portion containing the slits positionally corresponds over the groove in the guide, and(3) a cap nut having internal threads in one end portion thereof, which engage with the external threads of the clamping ring, and an internal tapered portion on the other end portion of said capnut having a bore therethrough which is greater in diameter than the outer diameter of the tube, said cap nut being tightened to said clamping ring resulting in a decrease in the diameter of the tubular end portion of the clamping ring containing the slits to hold said tube.

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