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Class Information
Number: 249/180
Name: Static molds > Core (internal mold) > Including means to expand or contract core > Means simultaneously moves plural molding sections of core
Description: Apparatus wherein the mechanical means moves two or more molding faces of the core simultaneously to and from their operative position.










Sub-classes under this class:

Class Number Class Name Patents
249/181 Rotary means 21


Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8602768 Mould for moulded parts with internal undercuts Dec. 10, 2013
8511359 Layup mandrel having changeable shape and method of using the same Aug. 20, 2013
8501073 Device for injecting a resin into at least one fibre layer of a fibre-reinforced product to be manufactured Aug. 6, 2013
8500085 Method for manufacturing a composite fiber component for aerospace Aug. 6, 2013
8444796 Mold for producing hollow-cylinder-like molded parts May. 21, 2013
8246877 Method, apparatus and a forming part for casting a concrete product by slipform casting Aug. 21, 2012
8092210 Mold for producing door cores Jan. 10, 2012
8002538 Collapsible core assembly for a molding apparatus Aug. 23, 2011
7132075 Method for producing a connector element for connecting frame parts at a joint location in a bicycle framework and connector element obtained thereby Nov. 7, 2006
7073766 Formwork system for concrete bodies Jul. 11, 2006
7066081 Device for making cheese and corresponding production method Jun. 27, 2006
6845957 Device for mounting and dismantling formwork Jan. 25, 2005
6803007 Method for producing a connector element for connecting frame parts at a joint location in a bicycle framework and connector element obtained thereby Oct. 12, 2004
6626414 Concrete casting sliding corner system Sep. 30, 2003
6530553 Method and apparatus for making concrete buildings Mar. 11, 2003
6116884 Mold core for overmolded flexible valve Sep. 12, 2000
6105924 Wedge apparatus and mold Aug. 22, 2000
5963380 Mold for inner gear and mold for cylindrical product with inner gear Oct. 5, 1999
5788874 Leak resistant hinge for use in concrete structure fabrication Aug. 4, 1998
5709769 Duct assembly system Jan. 20, 1998
5587189 Molding device for register of synthetic resin Dec. 24, 1996
5510083 Pipetting aid Apr. 23, 1996
5429693 Method of making a prestressed composite materials Jul. 4, 1995
5417519 Formwork apparatus May. 23, 1995
5290006 Expanding form for pouring mixed cement to reposition manhole castings Mar. 1, 1994
5281127 Articulated core blade assembly for use in an injection molding machine Jan. 25, 1994
5230907 Inside corner form Jul. 27, 1993
5219594 Apparatus for molding undercut parts Jun. 15, 1993
5217731 Injection molding tool with retractable bead-forming segments Jun. 8, 1993
5090888 Die casting mold part Feb. 25, 1992
4956142 Apparatus and method for molding three dimensional articles Sep. 11, 1990
4938679 Collapsible core for molding closures having interrupted interior threads and the like Jul. 3, 1990
4923378 Mold assembly for molding automotive seat May. 8, 1990
4915609 Sintering device for blanks of foamable plastics with undercuts Apr. 10, 1990
4913642 Mold for forming asymmetric balloon Apr. 3, 1990
4890999 Molding machine Jan. 2, 1990
4890993 Apparatus for forming concrete structures Jan. 2, 1990
4880048 Apparatus for the moulding of a cylinder block or of a corresponding foundry pattern Nov. 14, 1989
4861257 Core structure of molding apparatus Aug. 29, 1989
4854849 Injection mold Aug. 8, 1989
4832307 Injection mold May. 23, 1989
4828217 Molding apparatus for production of concrete box-units May. 9, 1989
4777004 Apparatus and method for molding plastic paint cans Oct. 11, 1988
4771981 Collapsible mould core Sep. 20, 1988
4731014 Rear opening mold Mar. 15, 1988
4717330 Apparatus for making a structural component Jan. 5, 1988
4717113 Segmented injection mold system Jan. 5, 1988
4708632 Injection moulding mould Nov. 24, 1987
4708614 Injection molds for the manufacture of composite bodies Nov. 24, 1987
4705258 Sheathing for pouring a container fabricated from concrete Nov. 10, 1987

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