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US 2024/0392908 A1Published application
Self Restraining Electrofusion Fitting
AssigneeGeorg Fischer Central Plastics LLC
InventorsMichael D. SMITH, Steven W. VANANTWERP
Life of this patent
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Abstract
An electrofusion coupler has a rigid housing with an internal bore. A coil lines an inner surface of the bore. An annular, unidirectional restraining member is configured to allow one end of a pipe to push through the restraining member in one direction into the internal bore and restrain the pipe from moving in an opposite direction when power is applied to the coil to weld the pipe.
Claims20
An electrofusion coupler for pipes, comprising:
- a rigid housing having an internal bore;
- a coil lining an inner surface of the bore;
- and
- an annular, unidirectional restraining member configured to allow one end of a pipe to push through the restraining member in one direction into the internal bore and restrain the pipe from moving in an opposite direction when power is applied to the coil to weld the pipe.
1 more element
An electrofusion coupler for pipes, comprising:
- a rigid housing having an internal bore, the housing having a centrally located radially extending stop;
- a coil lining an inner surface of the bore on opposite sides of the stop;
- first and second unidirectional restraining members located at opposite ends of the bore, the first restraining member being configured to allow one end of a pipe to push through the first restraining member in one direction into the internal bore to engage one side of the stop, the second restraining member being configured to allow one end of another pipe to push through the second restraining member in an opposite direction to engage an opposite side of the stop, the first and second restraining members being configured to restrain their respective pipes from moving away from each other when power is applied to the coil to weld the pipes together;
- and
- an annular sealing arrangement extending from an inner surface of the bore of the body and engaging outer surfaces of the pipes adjacent the stop.
2 more elements
Dependencies are inferred from the claim text.