Accession Number : ADD018735

Title :   Acoustic Window and Method for Making the Same

Descriptive Note : Patent, filed 29 Jun 95, patented 23 Sep 97

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Roush, Robert A ; DeAngelis, Robert J

Report Date : 23 Sep 1997

Pagination or Media Count : 10

Abstract : A method for making polyurethane acoustic windows. A molding material is applied to a reservoir connected to the bottom of the mold to fill the mold under the influence of a vacuum applied at the top of the mold. After initialling filling the mold, a second reservoir connects to the vacuum port and additional material is added to the first reservoir to partially fill the second reservoir. Thereafter the mold with the reservoirs attached is located in a pressure oven for curing. After curing the mold an acoustic window is removed from the mold for post molding operations.

Descriptors :   *PATENTS, *ACOUSTIC WINDOWS, *MOLDING TECHNIQUES, MANUFACTURING, CURING, POLYURETHANE RESINS, MOLDING MATERIALS

Subject Categories : Plastics
      Mfg & Industrial Eng & Control of Product Sys

Distribution Statement : APPROVED FOR PUBLIC RELEASE