초록 ▼

A pipe joint for connecting a plain pipe end. The joint has a bell which has a socket defined therein. The socket includes an axis, a conical surface, a first cylindrical surface of smaller diameter extending from one end of the conical surface, a bottom of the socket adjacent the first cylindrical

A pipe joint for connecting a plain pipe end. The joint has a bell which has a socket defined therein. The socket includes an axis, a conical surface, a first cylindrical surface of smaller diameter extending from one end of the conical surface, a bottom of the socket adjacent the first cylindrical surface for seating the pipe end, and a second cylindrical surface of larger diameter extending from the other end of the conical surface. A gasket is disposed adjacent the conical surface prior to sealing with the conical surface acting as a gasket seat during sealing of the gasket. A gland is provided and has a radially extending handle for rotating the gland from outside the bell. A breech lock mechanism is provided which includes internal segments on the second cylindrical surface of the socket and corresponding, cooperating external segments on the gland, the internal and external segments having matching, mirrored inclined plane surfaces for engagement with each other. The engagement of the inclined surfaces of the internal and external segments of the breech lock mechanism and rotation of the means causes axial movement of the gland relative to the socket. A thrust restraining grip ring can be provided in an annular tapered cavity on in inner circumferential surface of the gland ring. The bell can have a radially extending handle which the gland handle can abut.

대표청구항 ▼

[ What we claim is:] [27.] In a pipeline extending in a substantially horizontal plane, said pipeline including a pipe having plain ends, and at least one pipe fitting for connecting to one of the plain pipe ends, the improvement comprising said fitting comprising a body portion and at least one joi

[ What we claim is:] [27.] In a pipeline extending in a substantially horizontal plane, said pipeline including a pipe having plain ends, and at least one pipe fitting for connecting to one of the plain pipe ends, the improvement comprising said fitting comprising a body portion and at least one joint, said joint comprising:a bell with a socket defined therein, said socket including a conical surface, a first cylindrical surface of smaller diameter extending from one end of the conical surface, a bottom of said socket adjacent said first cylindrical surface for seating the pipe end, and a second cylindrical surface of larger diameter extending from the other end of the conical surface;a gasket disposed adjacent said conical surface prior to sealing, said conical surface acting as a gasket seat during sealing of said gasket;a gland having a radially extending handle;a breech lock mechanism including internal segments on said second cylindrical surface of said socket and corresponding, cooperating external segments on said gland, said internal and external segments having matching, mirrored inclined plane surfaces for engagement with each other;wherein with engagement of said inclined surfaces of said internal and external segments of said breech lock mechanism, rotation of said handle causes axial movement of said gland relative to said socket; anda radially extending handle on said bell positioned such that at a fully engaged position of said breech lock mechanism, said gland handle abuts said bell handle;wherein said body portion of said fitting has vertical center line and central axis;said gland handle of said joint and said bell handle, when the at least one joint is fully assembled, being positioned at a top of the vertical center line of the body portion when the central axis of said body portion is substantially in said horizontal plane, whereby an inspector viewing said pipeline from above, can see said gland handle and said bell handle together to determine that the fitting and pipe have been assembled correctly.