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. 08, 1997
Filed:
Jul. 20, 1995
Leo R Roucher, Jr, Escondido, CA (US);
Navius Corporation, San Diego, CA (US);
Abstract
A semi-compliant PET balloon and a method for manufacturing the balloon are disclosed. The method for manufacturing the semi-compliant PET balloon includes the steps of varying the temperature and inflation pressure on a tube of PET material in an ordered sequence to i) form the balloon, ii) thin the walls of the balloon, ii) size the balloon and then, iv) crystallize the PET material of the balloon. First, to form the balloon, the tube of PET material is preheated, and simultaneously pressurized and stretched. The pressure in the tube is then increased to conform the balloon to the shape of a mold. Next the balloon walls are thinned by decreasing pressure and providing additional stretch on the PET tube. A subsequent increase in pressure sizes the balloon. The sized balloon is next subjected to an increase in temperature and a decrease in pressure to crystallize the PET material. A cooling step completes the method for manufacture.