| 摘要 |
Push-fit pipe fitting device assemblies having a) a main body comprising one or more tubular portions, a first end of each of the tubular portions is connected either to a first end of another tubular portion or to another push-fit pipe fitting device assembly; and each of second ends of the tubular portions is configured to host a pipe; b) one or more tubular inserts, wherein the one or more tubular inserts are fittingly disposed inside tubular portions of the main body; c) one or more nuts, the one or more nuts is fittingly disposed over second ends of the main body; d) one or more grip rings, wherein the one or more grip are fittingly disposed over second ends of the tubular inserts, and inside the one or more nuts; and e) one or more elastomeric sealing rings disposed at each end of the one or more tubular inserts. |
| 主权项 |
1. A push-fit pipe fitting device assembly for connecting one or more pipes, each of said pipes having a longitudinal axis, the fitting device assembly comprising:
a main body comprising one or more tubular portions, each of the one or more tubular portions having a first end, a second end and a longitudinal axis; wherein said first end of each of said tubular portions is rigidly connected either to a first end of another tubular portion or to a connecting device that connects the one or more pipes to a pipe system; wherein each of said second ends of said tubular portions is an open end; and wherein each of said second ends of said tubular portions is configured to host one of said pipes within said second end of said tubular portions; one or more tubular inserts, each tubular insert comprising a first end and a second end, wherein said one or more tubular inserts are fittingly disposed inside each of said tubular portions of said main body; one or more nuts, each nut having a wide end and a narrow end, wherein one of said one or more nuts is fittingly disposed over each of said second ends of said main body; one or more grip rings, each grip ring having a wide end and a narrow end, wherein one of said one or more grip rings are fittingly disposed over each of said second ends of said tubular inserts, and inside one of said one or more nuts; and one or more elastomeric sealing rings fittingly disposed at each end of said one or more tubular inserts, wherein each of said grip rings further comprises:
a cylindrical inner surface; andat least one annular gripping tooth disposed on said inner surface; and wherein each of said tubular inserts further comprises one or more annular teeth disposed at said second end of said tubular insert; wherein said sealing rings are fittingly disposed in respective grooves at approximately said ends of each of said tubular inserts; wherein said first portion of each of said tubular inserts is respectively inserted into an internal space of said main body, through said second end of each of said tubular portion of said main body; wherein said grip rings are disposed over said second end of each of said tubular insert; wherein said wide end of each of said nuts is respectively inserted over said grip ring and locked onto a radially fitted nut-locking-mechanism formed from the external surface of said main body, wherein said narrow end of each of said nuts is smaller in diameter than said narrow end of said respective grip ring, thereby locking said grip ring inside said fitting device assembly, and wherein said narrow end of each of said nut is larger in diameter than said second end of said respective tubular inserts; and wherein the push-fit pipe fitting is connectable to the one or more pipes such that each of the one or more tubular portions has a pipe of the one or more pipes inserted therein, wherein each of said grip rings further comprises:
an annular body;an external surface having a substantially conical shape;a slit cut through said annular body, extending from said narrow end to said wide end; wherein the smaller most diameter of said at least one annular gripping tooth, said grip ring being in a non compressed state, is smaller than the external diameter of said one or more inserted pipes; and wherein each of said tubular inserts further comprises:
an inner surface;an external surface;a pipe stopper disposed separating said first and second ends of said tubular insert, wherein said pipe stopper extends outwardly substantially perpendicular to said external surface of said tubular insert; andone or more grip ring stoppers disposed on said pipe stopper, extending substantially perpendicular to said pipe stopper and substantially parallel to said external surface of said tubular insert, towards said second end of said second end of said tubular insert; wherein each of said nuts further comprises:
multiple slits extending from a rim of said wide end towards said narrow end, not reaching said narrow end, thereby forming bendable portions between two adjacent slits; andmultiple windows; wherein said nut-locking-mechanism comprises protrusions extending from said external surface of said main body; wherein the push-fit pipe device assembly is configured such that when said rim of said wide end of said nut reaches said protrusions, said bendable portions bend outwardly, with respect to said longitudinal axis of said fitting device, thereby sliding over said protrusions; and wherein the push-fit pipe device assembly is configured such that when said windows reach respective said protrusions, said bendable portions bend back inwardly, with respect to said longitudinal axis of said fitting device, thereby locking said windows over said protrusions and thereby locking said nut onto said main body. |
