Pipe joint assemblies
A pipe joint assembly comprises a gasket and two pipes. The gasket is flexible and has a through hole. Each pipe has a terminal connecting the gasket. Each terminal has a set of grooves and protrusions on a connecting surface to fit the sets on two sides of the gasket. Cross sections of protrusions are isosceles trapezoid.
1 . A pipe joint assembly comprising:
a gasket with a through hole, wherein the gasket is flexible;
a first pipe having a first terminal connecting the gasket;
a second pipe having a second terminal connecting the gasket;
a bushing containing and holding the second pipe; and
a sleeve containing and holding the first pipe and the bushing,
wherein the first terminal has a first set of grooves and protrusions on a first connecting surface;
the second terminal has a second set of grooves and protrusions on a second connecting surface; and
the gasket has a third set of grooves and protrusions on a side to fit the first set of grooves and protrusions, and a fourth set of grooves and protrusions on another side to fit the second set of grooves and protrusions,
wherein the grooves and protrusions of the first set, the second set, the third set, or the fourth set are concentrically circular.
2 . The pipe joint assembly of claim 1 , wherein an inner wall of the sleeve has a thread in a first end and inward teeth in a second end.
3 . The pipe joint assembly of claim 2 , wherein an outer wall of the bushing has outward teeth, the outward teeth are smaller than gaps of the inward teeth of the sleeve, and the second end of the sleeve has a space to contain the second terminal and the outward teeth of the bushing.
4 . The pipe joint assembly of claim 3 , wherein
an inner diameter the bushing is less than an outer diameter of the second terminal; and
an inner diameter of the inward teeth of the sleeve is more than the outer diameter of the second terminal.
5 . The pipe joint assembly of claim 1 , wherein the grooves or protrusions of the first set, the second set, the third set, or the fourth set have notches to leave space between the gasket and the first pipe or the second pipe.
6 . The pipe joint assembly of claim 1 , wherein cross-sections of the grooves and protrusions of the first set, the second set, the third set, and the fourth set are isosceles trapezoid.
7 . The pipe joint assembly of claim 1 , wherein the sleeve has a texture on an outer wall.
8 . The pipe joint assembly of claim 1 , wherein the first pipe has a polygonal section near the first terminal and the bushing has an inner diameter allowing insertion of the polygonal section.
9 . A pipe joint assembly comprising:
a gasket with a through hole wherein the gasket is flexible;
a first pipe having a first terminal connecting the gasket;
a second pipe having a second terminal connecting the gasket;
a bushing containing and holding the second pipe; and
a sleeve containing and holding the first pipe and the bushing,
wherein the first terminal has a first set of grooves and protrusions on a first connecting surface;
the second terminal has a second set of grooves and protrusions on a second connecting surface;
the gasket has a third set of grooves and protrusions on a side to fit the first set of grooves and protrusions, and a fourth set of grooves and protrusions on another side to fit the second set of grooves and protrusions; and
cross-sections of the grooves and protrusions of the first set, the second set, the third set, and the fourth set are isosceles trapezoid.
10 . The pipe joint assembly of claim 9 , wherein the grooves and protrusions of the first set, the second set, the third set, or the fourth set are concentrically circular.
11 . The pipe joint assembly of claim 9 , wherein an inner wall of the sleeve has a thread in a first end and inward teeth in a second end, an outer wall of the bushing has outward teeth, the outward teeth are smaller than gaps of the inward teeth of the sleeve, and the second end of the sleeve has a space to contain the second terminal and the outward teeth of the bushing.
12 . The pipe joint assembly of claim 11 , wherein
the bushing has an inner diameter less than an outer diameter of the second terminal; and
an inner diameter of the inward teeth of the sleeve is more than the outer diameter of the second terminal.
13 . The pipe joint assembly of claim 9 , wherein the sleeve has a texture on an outer wall.
14 . The pipe joint assembly of claim 9 , wherein the first pipe has a polygonal section near the first terminal and the bushing has an inner diameter allowing insertion of the polygonal section.
15 . A pipe joint assembly comprising:
a gasket with a through hole wherein the gasket is flexible;
a first pipe having a first terminal connecting the gasket;
a second pipe having a second terminal connecting the gasket;
a bushing containing and holding the second pipe; and
a sleeve containing and holding the first pipe and the bushing,
wherein the first terminal has a first set of grooves and protrusions on a first connecting surface;
the second terminal has a second set of grooves and protrusions on a second connecting surface; and
the gasket has a third set of grooves and protrusions on a side to fit the first set of grooves and protrusions, and a fourth set of grooves and protrusions on another side to fit the second set of grooves and protrusions,
wherein the grooves or protrusions of the first set, the second set, the third set, or the fourth set have notches to leave space between the gasket and the first pipe or the second pipe.
16 . The pipe joint assembly of claim 15 , wherein the grooves and protrusions of the first set, the second set, the third set, or the fourth set are concentrically circular.
17 . The pipe joint assembly of claim 15 , wherein an inner wall of the sleeve has a thread in a first end and inward teeth in a second end, an outer wall of the bushing has outward teeth, the outward teeth are smaller than gaps of the inward teeth of the sleeve, and the second end of the sleeve has a space to contain the second terminal and the outward teeth of the bushing.