초록 ▼

An improved stab-type coupling of the type used for connecting an end portion of a smooth wall non-metallic pipe or tube to fittings or other pipes or tubes wherein the coupling body has a first end area including an internal recess adapted to receive the end portion of a smooth walled non-metallic

An improved stab-type coupling of the type used for connecting an end portion of a smooth wall non-metallic pipe or tube to fittings or other pipes or tubes wherein the coupling body has a first end area including an internal recess adapted to receive the end portion of a smooth walled non-metallic pipe. An elongated hollow insert is disposed within the recess for receiving the pipe end portion axially thereover. At least a pipe gripping member is disposed within the recess in a radially spaced surrounding relationship with a portion of the insert to retainingly engage the pipe end portion as it is inserted axially therepast. The improvement comprises a closing structure associated with the body first end area for closing the recess and thereby protect the coupling interior. The closing structure accommodates selective removal of a portion thereof from the body to expose the recess prior to receipt of a pipe end portion thereinto. The accommodating portion may comprise any convenient arrangement such as a frangible zone, a designated cutting area and the like. The closing structure may be comprised of a separate, removable end cap. This application is a continuation of application Ser. No. 518,391, filed July 29, 1983, now abandoned, which is a continuation of application Ser. No. 251,776, filed Apr. 7, 1981, now abandoned.

대표청구항 ▼

A stab-type coupling for couplingly receiving a pipe end portion including: a one piece, integral body and end cap of synthetic plastic material, the body defining a hollow receiving region therein and a first end area cylindrical pipe engaging inner surface dimensioned for receiving the pipe end po

A stab-type coupling for couplingly receiving a pipe end portion including: a one piece, integral body and end cap of synthetic plastic material, the body defining a hollow receiving region therein and a first end area cylindrical pipe engaging inner surface dimensioned for receiving the pipe end portion; an elongated hollow insert separate from said body, disposed within said receiving region, and having an open outer end portion located adjacent said first end area cylindrical pipe engaging inner surface, said open outer end portion of said insert and at least a longitudinal portion of said insert being receivable within the pipe end portion when such pipe is inserted into said body end area inner surface for establishing fluid flow communication between said insert and the pipe; gripping means disposed within said receiving region surrounding a portion of said insert in a radially spaced relationship with said body and insert and dimensioned for externally gripping the pipe end portion; the end cap being unitary with said body first end area, said cap including an annular sidewall unitary with and extending axially outward from said body first end area and radially spaced from said insert and a unitary end wall disposed generally transverse of said cap sidewall axially spaced from said insert, said cap sidewall and end wall defining a cup-shaped cap recess in which said insert outer end portion is receivable, such that the cap performs dual functions of (i) closing said receiving region to seal the interior of said coupling from receiving ambient dirt therein and from discharging fluids therefrom and (ii) covering said insert outer end portion to protect said insert outer end portion; and, a cutting line integrally formed peripherally around the cap sidewall axially outward from the insert outer end portion to mark a location at which the cap end wall can be cut off without damaging the insert outer end portion, whereby the coupling may be buried in the ground for an extended duration before the cap end wall is cut off and the pipe end portion is couplingly received therein without dirt entering the coupling, without gas or fluids conveyed thereto leaking, and without damage to the insert.