Protective helmet and method of making same
    10.
    发明授权
    Protective helmet and method of making same 失效
    保护手套及其制造方法

    公开(公告)号:US3551911A

    公开(公告)日:1971-01-05

    申请号:US3551911D

    申请日:1969-02-04

    申请人: GEORGE FROST CO

    发明人: HOLDEN DAVID J

    IPC分类号: A42B3/00 A42B1/08 A42C1/00

    CPC分类号: A42B3/00

    摘要: A PROTECTIVE HELMET IS MADE FROM AN UNITARY PIECE OF FLEXIBLE SLAB MATERIAL, SUCH AS VINYL FOAM. A SUBSTANTIALLY CRUCIFORM BLANK HAS A CENTRAL PART, FRONT AND REAR PORTIONS, AND TWO SIDE PORTIONS. THE BLANK IS FORMED INTO HEAD-ENCOMPASSING SHAPE, AND THE EDGES OF THE BLANK PORTIONS ARE JOINED IN PAIRS IN EDGE ABUTTING RELATION, AS BY GLUING, AND A FLEXIBLE COATING IS APPLIED TO THE SURFACES OF THE SHAPED HELMET. A FASTENER ASSEMBLY COOPERABLE WITH A FASTENER ON A CHIN STRAP IS ATTACHED TO THE HELMET PROPER.