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:
Jan. 06, 1987
Filed:
Apr. 04, 1985
Willem M Versteegh, Fremont, CA (US);
Lester T Toy, Fremont, CA (US);
Christine Holland, San Mateo, CA (US);
Other;
Abstract
A heat recoverable tubular composite article comprising an inner layer comprising a crosslinked elastomeric polymeric material having a modulus at 100% elongation at 20.degree. C. of about 40 to about 900 pounds per square inch and an outer layer comprising a thermoplastic material having a 2% secant modulus at 20.degree. C. of about 5,000 to about 100,000 pounds per square inch said composite article (1) being formed by coextrusion, (2) having a direct bond between said layers with a peel strength of at least 6 pounds per linear inch, and (3) being in a radically expanded configuration, said thermoplastic outer layer being capable of retaining the elastomeric inner layer in an expanded configuration at ambient temperature and incapable of retaining the elastomeric layer in an expanded configuration at a temperature above a predetermined temperature thereby permitting the composite article to recover to or toward its unexpanded configuration.