Patent ID: 8360481

Claim:
A housing pipe joint for connecting a pair of pipes that include attachment portions on the pipe end, the housing type pipe joint comprising: a pair of housings, each of which includes a semicircular housing body, a flange portion located on at least an end of the housing body to extend radially outward, fitting portions located in parallel to each other on an inner surface of each of the housing bodies adapted to fit with the attachment portions of the pipes, each of the fitting portions extending diagonally relative to a center axis line of the housing body or including at least one stepped section that angles diagonally relative to the center axis line from one end of the fitting portion toward the other end of the fitting portion, and a positioning member on each housing body arranged on opposed surfaces of each flange portion wherein the opposed surface faces toward the other of the flange portion when the pair of housings are opposed to each other, the positioning member engaging with the other of the positioning member to position the pair of housings mutually at a first position when one of the pair of housings is rotated on a plane of the opposed surface about a symmetric point of the housing or at a second position when the housing is rotated in a direction opposite to the first position; wherein the pair of housings is adapted to surround and secure a connecting part of the pair of pipes when the positioning member of one housing body engages with the other of the positioning member of the other housing body; and when the positioning member engages with the other of the positioning member at the first position, the distance between the fitting portions and the other of the fitting portions opposed to each other is the closest the distance can be in a pipe axial direction perpendicular to the center axis line of the housing body so that the fitting portions are adapted to loosely fit in the attachment portions and the pair of pipes are movably connected to the pair of housings; and when the positioning member engages with the other of the positioning member at the second position, the distance between the fitting portions and the other of the fitting portions opposed to each other is the largest the distance can be in the pipe axial direction so that the fitting portions are adapted to tightly fit with the attachment portions and the pair of pipes are fixedly coupled to the pair of housings, wherein the positioning member includes two or more concave sections and convex sections alternately arranged and equidistantly spaced along the end of the housing body.