Pipe-fitting
AssigneeGeorg Fischer Central Plastics LLC
InventorJames Charles Jones
Life of this patent
Estimating the term…
Abstract
A pipe-fitting includes a coupling and a flexible pipe-restraint gasket. The coupling includes a bell that defines a pipe insertion mouth at an end of the coupling and an inner recess. The flexible pipe-restraint gasket assembly is disposed within the inner recess and includes an annular body, a plurality of discrete gripping members and at least one extension portion. The plurality of gripping members are disposed around an outer periphery of the body. The at least one extension portion extends from the body and is disposed between a pair of the plurality of gripping members. The at least one extension portion defines a pocket.
Claims19
A pipe-fitting comprising:
- a coupling including a bell defining a pipe insertion mouth at an end of the coupling and an inner recess;
- and a flexible pipe-restraint gasket assembly disposed within the inner recess, the gasket including an annular body, a plurality of discrete gripping members and at least one extension portion, the plurality of gripping members being disposed around an outer periphery of the body, the at least one extension portion extending from the body and being disposed between a pair of the plurality of gripping members, the at least one extension portion defining a pocket and wherein circumferentially opposing sides of each gripping member are curved in a longitudinal direction, with opposite axially extending edges of the extension portion engaging opposing sides of the curved gripping members, with the extension portion being configured to collapse when fluid pressure is applied through the pipe.
A pipe-fitting for plastic pipe comprising:
- a coupling including a bell defining a converging pipe insertion mouth at a forward end of the coupling and an inner recess;
- a flexible pipe-restraint gasket assembly disposed within the inner recess between an outer surface of the pipe and an inner wall of the converging pipe insertion mouth, the gasket including an annular body, a plurality of discrete gripping members, the plurality of gripping members being disposed around an outer periphery of the body and being initially spaced apart, circumferentially opposing sides of each gripping member being curved in a longitudinal direction, with each gripping member being curved at a forwardly diverging angle relative to adjacent gripping members;
- a plastic pipe having one end inserted into the gasket, with the gripping members remaining spaced apart;
- and the gasket being configure to move forward in the converging pipe insertion mouth of the bell and collapse to bring the gripping members in contact with each other and grip the plastic pipe 360 degrees around the pipe when fluid pressure is applied to avoid point loading or distortion of the plastic pipe.
Dependencies are inferred from the claim text.