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Class Information
Number: 72/453.13
Name: Metal deforming > With means to drive tool > Including pneumatic- or fluid-actuated tool support > Including fluid cushion for die opposite to ram
Description: Apparatus including a tool couple wherein one tool includes a pneumatic- or fluid-actuated tool support and wherein the other tool is supported on a compressible fluid medium such that the other tool will move away from the driven tool under extreme pressure.

Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8631678 Press mold Jan. 21, 2014
8522595 Guided keeper assembly and method for metal forming dies Sep. 3, 2013
8468866 Die cushion device Jun. 25, 2013
8429946 Press-working method, and press-working apparatus Apr. 30, 2013
8393264 Press machine Mar. 12, 2013
8375765 Method and device for controlling the synchronization of cylinder/piston units and for reducing pressure peaks during forming and/or fineblanking on a fineblanking or stamping press Feb. 19, 2013
8342085 Apparatus and method for compensating for stress deformations in a press Jan. 1, 2013
8341996 Method and deep-drawing apparatus for the deep drawing of metal sheets Jan. 1, 2013
8316686 Press tool arrangement Nov. 27, 2012
8166791 Die cushion device May. 1, 2012
8151619 Guided keeper assembly and method for metal forming dies Apr. 10, 2012
8127590 Die cushion device of pressing machine Mar. 6, 2012
8091395 System, method, software arrangement and computer-accessible medium for press-forming of materials Jan. 10, 2012
8061176 Press molding device and press molding method Nov. 22, 2011
8042375 Press die cushion controller Oct. 25, 2011
7958765 Pressing machine with die cushion device Jun. 14, 2011
7950262 Guided keeper assembly and method for metal forming dies May. 31, 2011
7926399 Punch assembly Apr. 19, 2011
7921689 Pneumatic biasing of a linear actuator and implementations thereof Apr. 12, 2011
7918120 Die cushion control device Apr. 5, 2011
7886564 System, method, software arrangement and computer-accessible medium for press-forming of materials Feb. 15, 2011
7827843 Device for controlling the drawing process in a transfer press Nov. 9, 2010
7823434 Live tooling systems for machine tools Nov. 2, 2010
7757526 Method for changing force control gain and die cushion control apparatus Jul. 20, 2010
7739894 Die cushion controller Jun. 22, 2010
7730757 Guided keeper assembly and method for metal forming dies Jun. 8, 2010
7685860 Control device for press machine Mar. 30, 2010
7681427 Method and device for the production and/or machining of pieces Mar. 23, 2010
7472897 Cushion and cushion cylinder for ram or bolster of a press Jan. 6, 2009
7406851 Die cushion controlling apparatus and die cushion controlling method Aug. 5, 2008
7401488 Die cushion apparatus Jul. 22, 2008
7337645 Draw press with a fixed draw punch and a floating draw punch Mar. 4, 2008
7290428 Can bottom forming assembly Nov. 6, 2007
7287409 Die cushion device Oct. 30, 2007
7260971 Apparatus for locking a sheet of metal suitable to be shaped in a press Aug. 28, 2007
7197910 Die cushion apparatus of a press machine and surge pressure reduction method for a die cushion apparatus Apr. 3, 2007
7124614 Method and a device for reducing the noise level at a deep-drawing press Oct. 24, 2006
7083164 Cushion and cushion cylinder for ram or bolster of a press Aug. 1, 2006
7004007 Die cushion apparatus for hot stretch-forming Feb. 28, 2006
6941789 Die cushion device Sep. 13, 2005
6804983 Die cushion apparatus Oct. 19, 2004
6796159 Low contact force spring Sep. 28, 2004
6749185 Cushion assembly and method Jun. 15, 2004
6626023 Hydraulic pressure compensating method and device for pressure-equalizing apparatus for pressure pins Sep. 30, 2003
6487888 Hemming machine Dec. 3, 2002
6460396 Power press Oct. 8, 2002
6457406 Overload protector for mechanical press Oct. 1, 2002
6237381 Power press ram force modulation and apparatus for use therewith May. 29, 2001
6205828 Forging die, and method and apparatus for controlling the same Mar. 27, 2001
6131497 Gas cylinder with time delay Oct. 17, 2000

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