Michael A Kramer

US Patent:

7906055, Mar 15, 2011

Filed:

Nov 13, 2009

Appl. No.:

12/618595

Inventors:

Michael Kramer - Huntington Beach CA, US
Kent Sherwood - Agoura CA, US

Assignee:

Foam Matrix, Inc. - Inglewood CA

International Classification:

B29C 70/44
B29C 45/14
B29C 33/76
B28B 11/08
B60R 21/16
B32B 3/20

US Classification:

264258, 264257, 264293, 264317, 428 361, 428188

Abstract:

An article () such as a grid fin that controls the direction of flight of a vehicle, has precisely formed passages () with porous locating walls (A, B) and a layer of fibrous material () such as graphite cloth lying against one or both opposite sides of the locating wall, and with the locating wall and fibrous material impregnated with resin (). Locating blocks () of foam are molded and the fibrous material () is wrapped around each block. The wrapped blocks () are each inserted into a passage () of a locating grid (), so the fibrous material is compressed. The locating grid lies in a grid-holding mold (). With the fiber-wrapped blocks inserted, the grid-holding mold is closed and resin is injected into the mold and allowed to harden. The foam blocks are removed by eroding them, as by sand blasting them, to leave a final article.