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Class Information
Number: 249/152
Name: Static molds > Container-type molding device > And an inner removable core to form recess or opening > Having inner and outer shells forming conduit-type product, receptacle-type product, or module > And means to expand or contract shell or core
Description: Apparatus having means to expand or contract the outer mold shell and/or core for purposes of producing a different sized product, or for separating the mold parts to facilitate product removal.










Sub-classes under this class:

Class Number Class Name Patents
249/153 By bending or flexing molding face 33


Patents under this class:
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Patent Number Title Of Patent Date Issued
8268223 Form and process for casting concrete blocks Sep. 18, 2012
8218121 Liquid crystal display having a printed circuit board combined with only one of the tape carrier packages Jul. 10, 2012
6672857 Device for introducing a coating into pipes Jan. 6, 2004
6626414 Concrete casting sliding corner system Sep. 30, 2003
6279867 Multi-part form of a mold for forming a containment member for molten metal Aug. 28, 2001
6105924 Wedge apparatus and mold Aug. 22, 2000
5755982 Concrete casting system May. 26, 1998
5720993 Collapsible core for concrete pipe making apparatus Feb. 24, 1998
5714080 Self-actuating molds for vertically casting concrete pipe Feb. 3, 1998
5700415 Method of molding synthetic resin and apparatus for use therein Dec. 23, 1997
5665139 Mold for production of a quartz glass component Sep. 9, 1997
5524861 Reusable mold for constructing housing units and method of use thereof Jun. 11, 1996
5490367 Apparatus for supporting and moving vertically an erected form assembly Feb. 13, 1996
5417519 Formwork apparatus May. 23, 1995
5381995 Concrete hole former Jan. 17, 1995
5338498 Method for formwork, and dismantling of formwork, of walls of poured material raised above a reference surface, and means for employment of this method Aug. 16, 1994
5290006 Expanding form for pouring mixed cement to reposition manhole castings Mar. 1, 1994
5230904 Apparatus for fully supporting appliance cabinet interior Jul. 27, 1993
5205943 Apparatus for manufacture of precast concrete building units Apr. 27, 1993
5169652 Molding machine Dec. 8, 1992
5156755 Adjustable apparatus for forming voids in concrete Oct. 20, 1992
5139404 Apparatus for making lined pipe Aug. 18, 1992
5116218 Segmented hot molding apparatus May. 26, 1992
4996013 Method for rapid molding of elongate concrete articles Feb. 26, 1991
4956142 Apparatus and method for molding three dimensional articles Sep. 11, 1990
4915609 Sintering device for blanks of foamable plastics with undercuts Apr. 10, 1990
4890999 Molding machine Jan. 2, 1990
4880048 Apparatus for the moulding of a cylinder block or of a corresponding foundry pattern Nov. 14, 1989
4832307 Injection mold May. 23, 1989
4824350 Sliding shuttering system Apr. 25, 1989
4804320 Sliding shuttering device Feb. 14, 1989
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
4705258 Sheathing for pouring a container fabricated from concrete Nov. 10, 1987
4679762 Form set-up Jul. 14, 1987
4667923 Molding device for modular concrete unit May. 26, 1987
4650150 Mold apparatus for vertical elements of concrete Mar. 17, 1987
4627810 Collapsible core Dec. 9, 1986
4618121 Mold for forming plastic cap with perforation about the periphery of the skirt Oct. 21, 1986
4614326 Concrete mold core assembly Sep. 30, 1986
4610422 Moulding apparatus for shaping concrete parts Sep. 9, 1986
4570896 Slide action inside corner form Feb. 18, 1986
4533312 Simplified collapsible mold core Aug. 6, 1985
4519568 Apparatus for constructing modular pre-cast concrete buildings May. 28, 1985
4502660 Mold including side walls with locking projections Mar. 5, 1985
4477399 Method and apparatus for manufacturing a foam insulated water heater Oct. 16, 1984
4471936 Mould core for casting concrete elements Sep. 18, 1984

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