US 11,725,763 B2
Pipe fitting with inner and outer seals
Jason Thompson, Langhorne, PA (US); and Derrick Sanislo, Thompson, OH (US)
Assigned to Honeywell International Inc., Charlotte, NC (US)
Filed by Honeywell International Inc., Morris Plains, NJ (US)
Filed on Nov. 21, 2019, as Appl. No. 16/690,812.
Prior Publication US 2021/0156500 A1, May 27, 2021
Int. Cl. F16L 37/092 (2006.01); F16L 47/06 (2006.01)
CPC F16L 37/0925 (2013.01) [F16L 47/065 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A pipe fitting configured to be coupled to a pipe, the pipe fitting comprising:
a shell defining a shell through hole that extends through the shell in a longitudinal direction, the shell having a shell inner surface that defines the shell through hole;
a stiffener positioned within the shell through hole, the stiffener including a stiffener outer surface that faces the shell inner surface such that the stiffener outer surface and the shell inner surface cooperate to define a pocket configured to receive the pipe; and
a shell-stiffener seal member positioned in the pocket, the shell-stiffener seal member including a seal inner surface and a seal outer surface, the seal inner surface defining a flat portion and first and second curved corners, wherein the flat portion helps keep the shell-stiffener seal member aligned on the stiffener and prevent a movement of the shell-stiffener seal member, wherein each of the first and second curved corners define a radius of curvature the depends upon a configuration of the stiffener, the shell-stiffener seal member translatable relative to the shell, the stiffener, or both the shell and the stiffener along the longitudinal direction, the seal inner surface extending circumferentially about and longitudinally along the stiffener outer surface such that the seal inner surface is substantially flush against the stiffener outer surface forming a seal between the shell-stiffener seal member and the stiffener, the seal outer surface abutting against the shell inner surface forming a seal between the shell-stiffener seal member and the shell, wherein the stiffener extends in the longitudinal direction from a first end to a second end, wherein the first end includes a flange that extends radially outward from the stiffener outer surface, and wherein the seal outer surface abuts against the first end of the stiffener including the radially extended flange and wherein the shell-stiffener seal member is positioned such that a chamfered end of the pipe abuts the shell-stiffener seal member without damaging or moving the shell-stiffener seal member.