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:
Sep. 22, 1987
Filed:
Mar. 29, 1985
Roger M Crane, Baltimore, MD (US);
Aleksander B Macander, Rockville, MD (US);
The United States of America as represented by the Secretary of the Navy, Washington, DC (US);
Abstract
The invention relates to an impregnation and processing technique for dry fiber composite preform net shapes and ensures maximum mechanical properties in finished structural fiber reinforced composite parts especially in water, and results in composite parts with a low internal void content. The proposed process is not dependent on any pumping action whether due to vacuum or positive pressure to cause the resin to flow into and around the skeletal structure of the dry fiber preform. The process is essentially dependent on the concept of gravity flow in a sandwiched apparatus wherein neat resin cast sheets are placed on both faces of a dry fiber preform shape to create a prepregged (i.e., infiltrated) structure.