Patent ID: 11858249
Assignee: THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY
Field: Surface technology, coating (Chemistry)
Classification: CPC B | IPC B

Claim 0:
1. A sub-laminate module for use in forming a composite laminate structure, the sub-laminate module comprising:
a first ply set containing a first ply layer oriented at a first angle and a second ply layer oriented at a second angle, the second angle being unequal the first angle;
a second ply set containing a third ply layer oriented at a third angle and a fourth ply layer oriented at a fourth angle, the fourth angle being unequal the third angle;
a first acute angle defined by a first difference between an absolute value of the first angle and the second angle; and
a second acute angle defined by a second difference between an absolute value of the third angle and the fourth angle, the second acute angle being the same as the first acute angle,
wherein the second ply layer is positioned adjacent the third ply layer and the second and third ply layers are both positioned intermediate the first and fourth ply layers, so as to define a staggered double-double helix sequence of the respective ply layers.