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:
Feb. 02, 1999
Filed:
Nov. 08, 1995
Andrew Youngs, Granger, IN (US);
Advanced Polymer Technology, Inc., Muskegon, MI (US);
Abstract
A system for housing secondarily contained flexible piping comprises a flexible conduit resistant to mechanical stresses, the conduit adapted to surround the secondarily contained flexible piping. The conduit comprises a metallic core and a thermoplastic jacket. The secondarily contained flexible piping comprises an inner supply pipe, wherein the inner pipe is comprised of a first, inner layer fabricated from nylon, a second, intermediate layer comprising a nylon reinforced wrap, and a third, outer layer comprising a polyethylene material, the nylon inner material, the nylon wrap and the polyethylene outer layer being extruded simultaneously to form the inner pipe. The secondarily contained flexible piping further comprises a flexible outer secondary containment pipe within which the inner supply pipe is carried, the outer pipe being fabricated from a fuel impervious material and having a plurality of radially projecting flanges disposed between the inner supply pipe and the outer secondary containment pipe, to provide a locking engagement of the pipes with respect to each other and to provide for a flow passage between the pipes.