The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 25, 2001
Filed:
May. 22, 1998
John C. Bushi, Parma Heights, OH (US);
Girish T. Dalal, Avon Lake, OH (US);
Thomas L. Evans, Amherst, OH (US);
Andrew M. Olah, Spencer, OH (US);
Theodore J. Schmitz, Avon, OH (US);
Andrew L. Auvil, Brecksville, OH (US);
A. Donald Meltzer, Akron, OH (US);
Stefanie Hahnen-Schroeder, Munchen Gladbach, DE;
Anthony Kordecki, Berkel, NL;
PMD Holdings Corp., Brecksville, OH (US);
Abstract
A multilayer composite pipe structure is described. The multilayer composite pipe comprises a hollow inner conduit, a first layer of adhesive, a metallic intermediate layer, a second layer of adhesive, as well as, the outer thermoplastic layer, respectively. The hollow inner conduit is made from any rigid thermoplastic material. The outer thermoplastic layer is made from a rigid, amorphous thermoplastic polymer. This multilayer composite pipe is pressure bearing. In one embodiment, the multilayer composite pipe is solvent cementable; whereas in another embodiment, the multilayer composite pipe is heat fusible. In still yet another embodiment of the invention, the multilayer composite pipe is bendable. Furthermore, the multilayer composite pipe can be used in a fluid conduit system with fittings with an optional insert.