04953234 is referenced by 67 patents and cites 22 patents.

The present invention is an impact resistant composite and helmet made thereof. The helmet comprises an impact resistant composite shell. The composite shell comprises a plurality of prepreg packets. Each prepreg packet comprises at least about 2 and preferably 5 to 20 prepreg layers. There are from 2 to 50 and preferably 5 to 20 prepreg packets. Each prepreg layer comprises a plurality of unidirectional coplanar fibers embedded in a polymeric matrix. The fibers of adjacent layers in the prepreg packets are at an angle of from 45.degree. to 90.degree., preferably 60.degree. to 90.degree., more preferably 80.degree. to 90.degree. and most preferabaly about 90.degree. from each other. The angle of the fiber in alternate layers is preferably, sustantially the same.

Title
Impact resistant helmet
Application Number
7081075
Publication Number
4953234
Application Date
July 10, 1989
Publication Date
September 4, 1990
Inventor
D C Prevorsek
Morris Township, Morris County
NJ, US
H L Li
Parsippany
NJ, US
Agent
Patrick L Henry
Assignee
Allied Signal
NJ, US
IPC
B32B 5/00
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