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:
Jul. 13, 2004
Filed:
Apr. 03, 2003
Olaf J. Zoellner, Leverkusen, DE;
Bayer Polymers LLC, Pittsburgh, PA (US);
Abstract
A tubular assembly which includes a first (or outer) tube ( ), a second (or inner) tube ( ) and a plug ( ) within the second tube ( ) is described. The plug ( ) resides within at least a portion of the second tube ( ), which itself resides within a portion of the first tube ( ). The first ( ) and second ( ) tubes each have perforations ( ), at least some of which are aligned. The plug ( ) has cavities ( ) in its exterior surface ( ), at least some of which are aligned with the aligned perforations ( ). Plastic material (e.g., thermoplastic material) is molded through aligned perforations ( ) and at least partially fills aligned cavities ( ). The edges ( ) of aligned perforations ( ) are embedded in the plastic material ( ) molded therethrough. The plastic material ( ) extending through aligned perforations ( ), into cavities ( ) and embedding perforation edges ( ) therein, serves to fixedly attach the first tube ( ), second tube ( ) and plug ( ) together.