PIPE JOINT

• US 3,658,367 A
• Filed: 01/14/1970
• Issued: 04/25/1972
• Est. Priority Date: 01/14/1970
• Status: Expired due to Term

• Current Assignee: Anton Pfeuffer
• Original Assignee: Anton Pfeuffer
• Inventors: Pfeuffer, Anton
• Primary Examiner(s): Arola, Dave W.
• Application Number:
  US05/002,876
• Time in Patent Office: 832 Days
• Field of Search: 285/334.5,365,366,367,407,408,409,410,411,424,354,223,234,177,233
• US Class Current: 285/148.23
• CPC Class Codes: F16L 23/10 with a pivoting or swinging pin
• CPC Class Codes: F16L 23/12 specially adapted for particular pipes

Abstract

A joint for flanged conduit ends associated with conduits of different diameters and including at least one annular sealing ring, the flanged ends being held together by a clamping ring and the parts being shaped and assembled to minimize exposure of the sealing ring to the fluid passing through the conduit.

Claims

1. A pipe joint comprising, a first conduit having an end flaring outwardly at an angle of less than 90* from the axis of said conduit, a second conduit having a diameter smaller than the diameter of said first conduit and an outwardly flared end constituted by at least two annular zones, at least one of said two zones lying at an angle of more than 90* to the axis of said second conduit and one of said two zones having a surface lying parallel to and in sealing relation with the flare of the first conduit when said conduit ends are juxtaposed, one of said two zones which does not have a surface lying parallel to the flare of said first conduit being located at an angle of less than 90* to the axis of said second conduit and extending between the unflared portion of said second conduit and the zone parallel to the flare of said first conduit, an O-ring disposed in contact with adjacent surfaces of said two zones, and clamping means bearing against said flare and said O-ring to hold said zone surface in sealing relation with said flare and to form with said O-ring a second seal.

2. A pipe joint according to claim 1 in which said two zones are joined along a line corresponding approximately to the circumference of the interior of the first conduit.