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PIPE COUPLINGS

  • US 3,794,361 A
  • Filed: 10/04/1971
  • Issued: 02/26/1974
  • Est. Priority Date: 10/13/1970
  • Status: Expired due to Term
First Claim
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1. In a pipe joint comprising opposed flanges (11, 14) on the pipe ends (10, 13), the adjacent faces of which flanges have annular opposed grooves (12, 15) forming a closed channel when joining the pipes together, said channel accommodating a sealing ring, the improved construction wherein the cross-sectional area of the sealing ring is at the most as large as the crosssectional area of the channel as defined by the opposed grooves, and said channel is composed of one portion of essentially triangular cross-section and one radially directed portion extending therefrom and whose cross-section is essentially rectangular, said radially directed portion having radially extending walls extending from the terminal end of said portion of essentially triangular cross-section and with said portion of essentially rectangular cross-section having a smaller extension in the axial direction of the pipe than the remaining part of the channel and forming with the other portion at least one edge (26) directed toward the sealing ring.

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