Allied Tube & Conduit Corporation

Allied Tube & Conduit Company

Stephen T Norvilas

Bruce E Laumann

Manzoor A Chaudhry

David S Pliner

Edward E Mild

Stephen E Seilheimer

Robert D Bussiere

Jeffrey L Lamber

Brian G Muick

Richard W Maunz

Elmer H Foster

Patrick J Bass

Kenneth J Spellman

The present invention relates to in-line coating of a continuously moving substrate, such as a tube or conduit, preferably of the type used for applications such as fire sprinkler piping. The present invention includes a fire sprinkler pipe defining an interior wall surface surrounding an internal pathway. The interior surface is coated with a coating that reduces the degradation of the interior surface and provides a barrier between the interior surface and fluid within the pathway to resist degradation of the interior surface over the life of the tube or conduit.

Internal diameter coatings for fire protection piping

A fire protection water sprinkler system, comprising at least one metal tube to carry water within the system, the metal tube having a coating on its interior surface comprising a quaternary ammonium salt in combination with a filming amine(s) and/or a synthetic oil.

Fire protection pipe and methods of manufacture

A method and apparatus for applying a coating to a continuous length of tubing. A coating chamber having entry and exit ports substantially encloses a portion of the tubing while permitting the tubing to pass continuously therethrough. Airflow into the coating chamber through the exit port strips excess coating material from the tubing surface. Air is withdrawn from the coating chamber by vacuum pumps through one or more separation chambers which separate entrained particles or droplets of coating material from the air. The coating chamber is preferably disposed at a distance from the separation chamber(s). The vacuum line connecting the coating chamber with the separation chamber(s) is preferably flexible or breakable. The separation chambers are preferably capable of being operated in series or in parallel. Adjustable masks are preferably provided at the entry and exit ports of the coating chamber. A seal is preferably provided at the entry port.

In-line coating of steel tubing

Growing community of inventors

Doylestown, PA, United States of America

Stephen T Norvilas