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:
Jul. 07, 1992
Filed:
Mar. 13, 1990
Andreas G Hegedus, San Francisco, CA (US);
Hexcel Corporation, Dublin, CA (US);
Abstract
A woven core structure (2) includes a first and second face sheets (4, 6) with inner surfaces (16, 18) facing one another. First and second sets of corrugated ribbons (8, 10) are positioned between the face sheets. The ribbons have nodes (12, 14) which are secured to the inner surfaces of the face sheets. The first set of ribbons extend transversely to, and preferably perpendicular to the second set of ribbons. The first and second sets of ribbons are woven such that the nodes of the first set of ribbons are spaced apart from and generally opposite the nodes of the second set of ribbons. This arrangement permits an increase in the node contact area (26) between the nodes and the face sheets to enhance the bond strength between the ribbons and the face sheets and to increase the skin deformation strength of the structure. The angle between the ribbons and the face sheets can be adjusted to optimize shear strength versus tension/compression strength.