Method of making ballistic helmet

Details Method of making ballistic helmet Method of making ballistic helmet

1986-10-30

1988-10-18

Lowe, James

Plastic and nonmetallic article shaping or treating: processes

With severing, removing material from preform mechanically,...

Cutting and uniting cut parts

2 6, 2412, 83 29, 83925CC, 156224, 264103, 264153, 264160, 264258, B29C 6570, B29D 900, B32B 2700

Patent

active

047786388

ABSTRACT:
A method of making a ballistic helmet and a helmet made by the method in which each of the plies making up the body is formed from a hexagonal blank cut from ballistic cloth and provided with slits extending from the apices thereof toward the center to form a central area and segments extending from the central area. As the blanks are laid up in a mold cavity the segments overlap to provide first portions which overlap and second portions which do not. As successive blanks are laid up they are rotated slightly to stagger the portions of adjacent plies. As the laying up operation proceeds, progressively smaller blanks are laid up between adjacent relatively larger blanks.

REFERENCES:
patent: 1849779 (1932-03-01), Zimmerman
patent: 2532442 (1950-12-01), Daly
patent: 2610322 (1952-09-01), Daly
patent: 2956916 (1960-10-01), Voss et al.
patent: 3582990 (1971-06-01), Frieder
patent: 4596056 (1986-06-01), Grick

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