Method for making multi-layer, personnel-protective helmet shell
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B29C-041/08
B29C-041/22
출원번호
US-0003742
(2001-11-14)
발명자
/ 주소
Dennis, Mike
Monk, Russell A.
출원인 / 주소
MJD Innovations, LLC
대리인 / 주소
Dickinson, PC, Jon M.
인용정보
피인용 횟수 :
16인용 특허 :
24
초록
A method for making a multi-layer helmet shell wherein inner and outer, structural, load-bearing semi-rigid layers are spray-deposited onto opposite surfaces of a pre-shaped, pliable viscoelastic, acceleration-rate-sensitive, microcellular foam core.
대표청구항▼
1. A dual spray-deposition method of making a multilayer helmet shell employing, in appropriate succession as support structures, a female cavity, and an associated male mandrel comprising: utilizing an appropriate, generally sheet-like body of a first selected material, shaping and configurationall
1. A dual spray-deposition method of making a multilayer helmet shell employing, in appropriate succession as support structures, a female cavity, and an associated male mandrel comprising: utilizing an appropriate, generally sheet-like body of a first selected material, shaping and configurationally supporting a generally helmet-shaped central structural core layer having inner and outer surfaces, and forming a first precursor helmet shell; while so supporting the core layer selectively on one of the mentioned support structures, assuring the substantially full-access exposure of at least one of such surfaces; directing toward such at least one surface a spray of a first, selected, vapor-suspension deposition material to form on, and joined to, the at least one surface a structural layer which, along with the core layer, form a second precursor helmet shell; thereafter, supporting the second precursor helmet shell on the other mentioned support structure so as to assure the substantially full-access exposure of the other one of such surfaces; and then directing toward such other surface a spray of a second, selected, vapor-suspension deposition material to form on, and suitably joined to, the other surface a third structural layer, thus completing the fabrication of the intended, finished helmet shell. 2. A method of making a multilayer helmet shell comprising: in a generally helmet-shaped female cavity, forming a pliable layer of a selected material to form a central core having a helmet shape and an exposed inner surface; directing a spray of a first, selected, vapor-suspension deposition material onto the exposed inner surface of the core in the cavity to form a structural inner layer which bonds to the inner surface, and which generally stabilizes, into a helmet shape, the combined core and inner layer; removing the joined central core material and inner layer from the cavity, and placing this assembly onto a generally helmet-shaped male mandrel, with the core having an exposed outer surface; directing a spray of a second, selected, vapor-suspension deposition material onto the exposed outer surface of the core to form a structural outer layer which bonds to the outer surface, and which collectively, with the inner layer, forms a substantially fully encapsulating jacket around the core; and removing from the mandrel, as a finished helmet shell, the assembly of the inner layer, the core, and the outer layer.
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이 특허에 인용된 특허 (24)
Mike Dennis ; Michael Tucker, Body-contact cushioning interface structure.
Brckner Georg F. (Berlin DEX) Geike Bernd (Berlin DEX) Schoen Bernd-Jrgen (Grafenau DEX) Berger Fritz (Ottobeuren DEX), Headprotector made of elastic material for athletes.
Robertson A. Scott (San Francisco CA) Geiger Richard (Fremont CA) Lishman Robert W. (LeSelva Beach CA), Method of construction for a composite wheelchair chassis.
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