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Class Information
Number: 164/7.1
Name: Metal founding > Process > Shaping a forming surface (e.g., mold making, etc.) > Utilizing a vacuum during shaping
Description: Process in which a less than ambient pressure is employed.

Sub-classes under this class:

Class Number Class Name Patents
164/7.2 To apply consumable shielding film to shaping surface 28

Patents under this class:
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Patent Number Title Of Patent Date Issued
8079131 Method for filling metal into fine space Dec. 20, 2011
7073557 Method of drying a sand mold using a vacuum Jul. 11, 2006
6868892 Ceramic fiber core for casting Mar. 22, 2005
6668904 Method and apparatus for producing casting moulds or mould parts Dec. 30, 2003
6666254 Method for the uphill casting of cast pieces in sand moulds with controlled solidification Dec. 23, 2003
6634410 Mold apparatus and method Oct. 21, 2003
6371194 Method for producing core preforms and recycling core sand for a foundry Apr. 16, 2002
6315028 Equipment for circulating box containing model for making mold under reduced pressures Nov. 13, 2001
6209617 Sealing riser sleeve Apr. 3, 2001
5957189 Apparatus and method for sequentially feeding quantities of sand into a mold space and subjecting the space to evacuation and then pressure increase after each feed Sep. 28, 1999
5881794 Apparatus and method for producing shell-like molds Mar. 16, 1999
5791040 Method for making ceramic tools for the production of micromagnets Aug. 11, 1998
5558148 Method of producing molds Sep. 24, 1996
5388630 Method of manufacturing core and mold Feb. 14, 1995
5219014 Device and method for fabricating foundry molds from granular material Jun. 15, 1993
5161603 Method for production of single-use foundry molds and apparatus for realization thereof Nov. 10, 1992
5137091 Process of producing molded body from green molding sand Aug. 11, 1992
5062466 Countergravity casting apparatus and method Nov. 5, 1991
5062467 Vacuum countergravity casting apparatus and method Nov. 5, 1991
4971131 Countergravity casting using particulate filled vacuum chambers Nov. 20, 1990
4958674 Full mold casting process and device Sep. 25, 1990
4957153 Countergravity casting apparatus and method Sep. 18, 1990
4947923 Method and apparatus for evaporative pattern casting Aug. 14, 1990
4943398 Method for manufacturing a fused cast refractory Jul. 24, 1990
4921035 Process for compacting powdery materials May. 1, 1990
4915159 Method and apparatus for compacting foundry mold making material about a foundry mold pattern Apr. 10, 1990
4791974 Method and an apparatus for producing shaped bodies from particulate material Dec. 20, 1988
4724888 Method and apparatus for the production of flaskless foundry molds Feb. 16, 1988
4694879 Process for producing castings Sep. 22, 1987
4653568 Foundry process and apparatus, including mixing investment composition under vacuum Mar. 31, 1987
4646809 Method for the production of frozen mould bodies and apparatus for use in the carrying out of the method Mar. 3, 1987
4628983 Method and apparatus for making hollow sheel cores with controlled gas flow Dec. 16, 1986
4623014 Process for the production of precision castings Nov. 18, 1986
4612968 Method of casting using expendable patterns Sep. 23, 1986
4602667 Method for making investment casting molds Jul. 29, 1986
4576215 Method for the production of frozen mould bodies and apparatus for use in the carrying out of the method Mar. 18, 1986
4567932 Vacuum moulding flask Feb. 4, 1986
4541471 Process for the production of precision castings by the gypsum-mold process Sep. 17, 1985
4531565 Gas hardening type molding machine Jul. 30, 1985
4467855 Method of making mold Aug. 28, 1984
4457352 System and process for the abatement of casting pollution, reclaiming resin bonded sand, and/or recovering a low BTU fuel from castings Jul. 3, 1984
4390056 Method and apparatus for producing one or more hollow sand cores suitable for casting moulds Jun. 28, 1983
4312397 Process for forming shell molds Jan. 26, 1982
4291740 Apparatus and method for heatless production of hollow items, for instance, foundry shell cores Sep. 29, 1981
4291739 Method of manufacturing a hollow casting mold Sep. 29, 1981
4286937 Production of sand moulds Sep. 1, 1981
4246953 Adjustable filler means for molds and method thereof Jan. 27, 1981
4226277 Novel method of making foundry molds and adhesively bonded composites Oct. 7, 1980
4182395 Method and device for the production of casting molds out of sand containing a binder Jan. 8, 1980
4144925 Method and apparatus for the production of foundry sand molds Mar. 20, 1979

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