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A plumbing construction is provided including a pipe, a fitting, and a bushing, each formed from polybutylene and providing a fluid-tight connection between the pipe and the fitting. The bushing is mounted about the pipe and an end of the pipe and the bushing is inserted into the fitting. The bushin

A plumbing construction is provided including a pipe, a fitting, and a bushing, each formed from polybutylene and providing a fluid-tight connection between the pipe and the fitting. The bushing is mounted about the pipe and an end of the pipe and the bushing is inserted into the fitting. The bushing is rotated with respect to the fitting to produce friction welds between the bushing and both the pipe and the bushing.

대표청구항 ▼

A tubular connection construction comprising: a tube member, a bushing means having inner and outer surfaces mounted about said tube member, a connection member having an opening into which an end of said tube member and an end of said bushing means are inserted, said bushing means including a rotat

A tubular connection construction comprising: a tube member, a bushing means having inner and outer surfaces mounted about said tube member, a connection member having an opening into which an end of said tube member and an end of said bushing means are inserted, said bushing means including a rotatable portion extending out of said opening, said bushing means forming separate, coaxial and substantially concentric friction welds substantially simultaneously with respect to both said connection member and said tube member when said bushing means is rotated with respect to said tube member and said connection member, each of said friction welds being formed substantially simultaneously over the length of that weld, and said tube member, bushing means and connection member are each formed from polybutylene materials.