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:
May. 05, 1987
Filed:
Jun. 14, 1985
Sekisui Kagaku Kogyo Kabushiki Kaisha, Osaka, JP;
Abstract
A method for the production of thermoplastic tubes comprising: (1) extruding the thermoplastic tube of which the interior surface in a molten state by a heating unit disposed within the area of a mandrel near the nozzle of an extrusion mold, and (2) sliding the interior surface of the tube on an additional mandrel supported to the front end of the mandrel through a heat-insulating material in axial alignment with the hollow mandrel in a manner to bring the interior surface of the tube into contact with the smooth surface of the additional mandrel and simultaneously cooling the interior surface of the tube with a cooling medium.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile