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:
Apr. 08, 1986
Filed:
Aug. 27, 1984
Kenneth Lukas, Fair Oaks, CA (US);
Fiber Materials, Inc., Biddeford, ME (US);
Abstract
A single piece carbon fiber composite article suitable for use as a hot-press mold is has an inner volume of chopped fiber and an outer volume of continuous carbon fiber all in a common graphite support matrix. The article is assembled by winding continuous carbon fiber around a mandrel formed of chopped carbon fiber in a matrix of carbon, impregnating the interstice in the winding and mandrel with graphite precursor material. The precursor material is converted to graphite, creating a common matrix between the internal mandrel and the external windings. The internal volume is machinable to form a graphite mold cavity, and has essentially the same coefficient of thermal expansion as the external volume.