Patent ID: 9285066
Filing Date: 2016-03-15
CPC Classification: F16L,F23J

Claim Text:
1. A vent pipe comprising: an inner casing extending along an axis; an outer casing surrounding the inner casing and extending along an axis; a male end portion; a female end portion defining a depression extending axially between the inner and outer casings for receiving a male end portion of another vent pipe between said inner and outer casings, said female end portion being opposite said male end portion; an insulation material between the inner and outer casings and extending into the male end portion; a male cap having a first leg extending axially along the inner casing and a second leg extending axially along the outer casing defining said male end portion, wherein a first flange extends from the male cap second leg extending from the male end portion and externally and radially outward beyond at least a portion of the outer casing and from said male end portion, wherein said male cap comprises a third leg extending between the male cap first and second legs; and a female cap having a first leg extending axially along the inner casing and a second leg extending axially along the outer casing defining said female end portion, said female cap having a second flange extending from the female cap second leg and externally and radially outward beyond at least a portion of the outer casing and from said female end portion for mating with a first flange extending from the male end portion of another vent pipe, wherein the female cap includes a third leg extending between the female cap first and second legs, wherein the depression is defined by said female cap first, second and third legs for receiving a male end portion of another vent pipe, wherein when said male end portion of said another pipe is received in said female end portion, a portion of inner and outer casings of said another pipe are sandwiched in a radial direction between a portion of the inner and outer casings of said vent pipe.