Static structures (e.g. – buildings) – Transparent panel having active treatment with gas or liquid – Hygroscopic material; e.g. – internal drier
Patent
1980-05-05
1982-06-08
Bell, J. Karl
Static structures (e.g., buildings)
Transparent panel having active treatment with gas or liquid
Hygroscopic material; e.g., internal drier
109 495, 52400, 52788, E06B 712, E06B 324
Patent
active
043332820
ABSTRACT:
A two section bulletproof window and method of making the same is shown. The outer section is multi-layered, the outer layer being safety plate glass. Inner layers of the outer section are composed of polycarbon laminate. The inner section is also composed of layers of polycarbon laminate and is separated from the outer section by a space containing dry nitrogen gas at about 2.5 pounds per square inch pressure. The space is necessary to allow for differential rates of expansion and contraction of the sections and layers without damaging the window. The positively pressured dry nitrogen gas is necessary to maintain a dust free and moisture free atmosphere within the space. An inexpensive pressurized nitrogen gas reservoir is utilized to guarantee long term maintenance of the positive nitrogen pressure within the space. The method of making the protective window involves continuous purging of the space with the dry nitrogen gas while the different sealants involved are curing. Means of positioning the sections of the protective window and means of utilizing the protective window itself are also shown.
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patent: 3872804 (1975-03-01), Yarnall
patent: 3919023 (1975-11-01), Bowser et al.
patent: 3930452 (1976-01-01), Van Laethem et al.
patent: 3940898 (1976-03-01), Kaufman
patent: 3990202 (1976-11-01), Becker
patent: 4065894 (1978-01-01), Day
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