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Helmet of a laminate construction of polycarbonate and polysulfone polymeric materialAn article of laminate construction is disclosed which is comprised of an underlayer of polycarbonate polymer material to which is applied a chemically resistant outer layer of polysulfone. The layers which are joined by compression-heat molding, are molded to form the shape of a body protective shell such as a space helmet comprising a shell of polycarbonate, polysulfone laminate construction attached at its open end to a sealing ring adapted for connection to a space suit. The front portion of the shell provides a transparent visor for the helmet. An outer visor of polycarbonate polysulfone laminate construction is pivotally mounted to the sealing ring for covering the transparent visor portion of the shell during extravehicular activities. The polycarbonate under layer of the outer visor is coated on its inner surface with a vacuum deposit of gold to provide additional thermal radiation resistance.
Document ID
19920000873
Document Type
Other - Patent
Authors
Kosmo, Joseph J. (NASA Lyndon B. Johnson Space Center Houston, TX, United States)
Dawn, Frederic S. (NASA Lyndon B. Johnson Space Center Houston, TX, United States)
Date Acquired
August 15, 2013
Publication Date
October 15, 1991
Subject Category
NONMETALLIC MATERIALS
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
US-PATENT-5,056,156|NASA-CASE-MSC-21503-1
Patent Application
US-PATENT-APPL-SN-443414

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