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:
Aug. 09, 2005
Filed:
Aug. 05, 2004
Charles Weber, Onalaska, WI (US);
Chris Rannenberg, Winona, WI (US);
Charles Weber, Onalaska, WI (US);
Chris Rannenberg, Winona, WI (US);
Composite Products, Inc., Winona, MN (US);
Abstract
A method of determining an average length of reinforcing fiber in a sample of reinforcing fibers is disclosed. A sample of reinforcing fibers is weighed to obtain a total sample weight. The sample of reinforcing fibers is placed in a fiber separating mechanism and suspended in water. The water is stirred after which the water is allowed to settle such that the sample of reinforcing fiber divides into a plurality of fractions in separate sections of the fiber separating mechanism. Each fraction has reinforcing fibers of substantially similar lengths and is separately weighed. An average fiber length is calculated from the relative weights of each of the plurality of fractions and the total sample weight. In addition, a method of determining an average length of a reinforcing fiber in a composite material having a resin and a plurality of reinforcing fibers is disclosed.