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US 4,465,307 AGranted
Pipe coupler for insulated pipes
AssigneeWavin B.V.
InventorTinus de Lange
Life of this patent
Estimating the term…
Abstract
The invention relates to a coupler for insulated plastic pipe ends and a branch pipe end, the insulation being covered with tubular casings. The coupler is provided with anchoring means comprising one or more ribs or cams extending laterally from the central coupler 1 and with means for transmitting pressure forces from the anchoring means and the central coupler to the tubular casings.
Claims3
A pipe coupler for use with main plastic pipe lines, comprising:
- a central coupler having an outer shell and connecting means connecting said main pipe lines thereto and having at least one branch connection,
- outer tubular casings about said main pipe lines and said branch connection,
- an insulated foamed support for said central coupler main and branch pipe lines between said pipe lines and said outer casings,
- an insulated foamed support for said central coupler main and branch pipe lines between said pipe lines and said outer casings,
- annular sealing plugs disposed between the main pipe and branch pipe ends and said tubular casings at the connection of the outer shell of said branch connection to the casings,
- spacer bush means disposed around said main and branch pipe ends between said central coupler and each of said sealing plugs, said spacer bushes being of split construction.
3 more elements
Dependencies are inferred from the claim text.