B - Operations – Transporting – 28 – B
Patent
B - Operations, Transporting
28
B
25/136
B28B 3/02 (2006.01) B22F 5/02 (2006.01) B28B 1/00 (2006.01) B28B 7/34 (2006.01) C04B 35/593 (2006.01) C04B 35/645 (2006.01) C04B 38/00 (2006.01) F28F 21/04 (2006.01)
Patent
CA 1036798
METHOD OF MANUFACTURING AN OPEN CELLULAR ARTICLE A B S T R A C T A method of manufacturing an open cellular article constructed of a plurality of spaced walls of relatively weak bondable material defining a plurality of elongated passages therethrough which are filled with a disintegratable filler material having sufficient form and strength initially to main- tain the walls in their predetermined precisely spaced relation and after bonding of the walls into an integral unit such filler material being conveniently removable from the article to re- establish the passages between the walls.
222699
Straw Raymond L.
Wilson Larry R.
Caterpillar Tractor Co.
Na
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