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:
Dec. 04, 1984
Filed:
Sep. 30, 1983
Ernest C Millard, Riverside County, CA (US);
William D Brown, Riverside County, CA (US);
Rohr Industries, Inc., Chula Vista, CA (US);
Abstract
A method of forming perforations in composite laminates by impregnating the material with a modified epoxy resin by means of hot melt or solvent methods. The resin is then allowed to dry. The epoxy impregnated material is then warmed to around 165.degree. F. and forced by a resilient pressure pad over a tool having a plurality of upstanding studs or pins. While in position on the pin tool, the laminate is then partially cured by combined heat and pressure to minimize resin flow while retaining the ability to be formed to a final contour in a contoured curing fixture after removal from the pin tool. Controlled partial cure and selected low flow resin systems prevent resin flow into the formed apertures formed by the pin tool during final resin cure.