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Class Information
Number: 249/186
Name: Static molds > Core (internal mold) > Of plural sections > Including frictionally secured means
Description: Apparatus wherein the plural core sections are held in their operative assembly by friction means and are collapsible upon removal of the friction means.

Patents under this class:

Patent Number Title Of Patent Date Issued
8459978 Method for manufacturing a composite drive shaft manufactured using mold Jun. 11, 2013
8024015 Mobile device Sep. 20, 2011
7713603 Molded article method, and apparatus for providing an undercut molding feature in a mold tool May. 11, 2010
7708917 Method and apparatus for casting concrete elements May. 4, 2010
7004443 Concrete void former Feb. 28, 2006
6843462 Manufacturing apparatus of fiber reinforced composite member Jan. 18, 2005
6840018 Elongate bodies for use in pre-cast panel forming systems Jan. 11, 2005
6789366 Lost mould element for manufacturing reinforced concrete flat slabs Sep. 14, 2004
6149121 Apparatus for forming unlined passages through concrete walls Nov. 21, 2000
6027094 Set of parts for use in building and a method of using same Feb. 22, 2000
5714081 Dismountable mechanical core and procedure for implementing it Feb. 3, 1998
5695790 Mold assembly for injection molding Dec. 9, 1997
5385705 Reusable core apparatus for a casting mold, and methods of utilizing same Jan. 31, 1995
4938909 Flash-free molding of I.C. engine passages Jul. 3, 1990
4623117 Tool for moulding the top part of a plastics container Nov. 18, 1986
4487567 Apparatus for making a vascular graft Dec. 11, 1984
4243200 Form pan structure Jan. 6, 1981
4084780 Cavity forming plug for coil insert in concrete product Apr. 18, 1978
4081167 Vertically flaring concrete form Mar. 28, 1978
4077599 Device for forming apertures in concrete Mar. 7, 1978
4063861 Tire mold Dec. 20, 1977
3933336 Pipe sleeve Jan. 20, 1976

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