초록 ▼

An open end of a standard pipe fitting is enlarged in diameter to coaxially receive an O-ring and a retainer having a cylindrical surface. A plurality of locking teeth project from the cylindrical surface and are engageable with both the inner surface of the fitting and an outer surface of a pipe en

An open end of a standard pipe fitting is enlarged in diameter to coaxially receive an O-ring and a retainer having a cylindrical surface. A plurality of locking teeth project from the cylindrical surface and are engageable with both the inner surface of the fitting and an outer surface of a pipe end inserted coaxially into the fitting open end. Each of the locking teeth have oppositely disposed edges facing obliquely inwardly and outwardly to engage both the pipe end and the fitting and resisting motion of the pipe end relatively to the fitting. In an alternate embodiment, a first plurality of teeth each have an edge facing obliquely inwardly of the fitting to engage the pipe end and resist motion tending to withdraw the pipe end from the fitting. A second plurality of teeth each have an edge facing obliquely outwardly of the fitting and resist motion tending to withdraw the retainer from the fitting.

대표청구항 ▼

1. A coupling for engaging a pipe end, said coupling comprising:a first cylindrical receptacle for receiving said pipe end; a second receptacle arranged coaxially and in tandem with said first receptacle, said second receptacle being smaller than said first receptacle so as to form a shoulder within

1. A coupling for engaging a pipe end, said coupling comprising:a first cylindrical receptacle for receiving said pipe end; a second receptacle arranged coaxially and in tandem with said first receptacle, said second receptacle being smaller than said first receptacle so as to form a shoulder within said coupling between said first and second receptacles, said second receptacle being tapered, becoming smaller in a direction away from said shoulder, said taper being sized to receive said pipe end in an interference fit thereby providing frictional resistance against axial rotation between said pipe and said coupling; a retainer having a cylindrical perimetrical surface positioned within and coaxial with said first receptacle, said retainer having locking teeth positioned circumferentially around and projecting from said surface, said locking teeth being engageable with said first receptacle and said pipe end resisting removal of said pipe end from said coupling.