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. 24, 2012
Filed:
May. 26, 2010
Richard A. Callis, Covington, WA (US);
Joe White, Dublin, CA (US);
Jane White, Legal Representative, Auburn, WA (US);
Scott Newkirk, Kent, WA (US);
Richard A. Callis, Covington, WA (US);
Joe White, Dublin, CA (US);
Jane White, legal representative, Auburn, WA (US);
Scott Newkirk, Kent, WA (US);
Hexcel Corporation, Dublin, CA (US);
Abstract
Methods and apparatus are provided for making a rotor blade spar from composite material wherein a multi-component mandrel is used to form the composite spar. The mandrel is made using a number of components, which are assembled to provide a structure that is sufficiently strong to maintain the spar shape during pre-cure lay up, compaction and curing of the composite material. The multiple components used to form the mandrel can be separated from each other and easily removed from the spar either before or after curing of the composite material. The mandrel components can then be re-assembled and re-used to form additional composite spars.