Highly Weather-Proof High Strength Tri-Axial Woven Membrane Materials, US Patent No. 4346139
Sample pages
Page 7, at reduced quality. Open the document to read every page in full.
US Patent 4,346,139, granted 24 August 1982 to Osawa, Nishimura and Toyooka of Sumitomo Electric Industries, for a weather-proof, high-strength membrane material for radomes. The membrane is a layered laminate: polyvinyl fluoride film, adhesive, sprayed urethane, a triaxially woven polyaramide (Kevlar-type) fabric with axes at 60 degrees, and a second sprayed urethane layer. The triaxial weave is claimed to resist creasing on triangular frames and to keep radio-wave permeability. The scan includes a web-database printout and the original patent pages with four figures, 13 claims and a description.
- Type
- Patent
- Date
- August 24, 1982
- Language
- English
- Pages
- 9
(A free account is all you need)
From Ralph Griswold's Digital Archive, delivered by the University of Arizona.
Have missing pages or a better copy of this document, or another document to share? Contributing documents »