1
Bunryo Sato, Takeshi Nomura, Kiyoshi Yamamoto, Masaki Ohmori: Press-forming method for optical element. Canon Kabushiki Kaisha, Fitzpatrick Cella Harper & Scinto, July 20, 1993: US05228894 (18 worldwide citation)

A method for press-forming a glass preform includes the steps of applying positioning pressure to an upper mold as the temperature of the upper mold and a lower mold increase to set values, maintaining a first temperature difference between the upper and lower molds of at least 10.degree. C. and inc ...


2
Koji Emura, Tuneo Suzuki, Hidemichi Kazama: Continuous press forming method for sheet resin. Yamakawa Industrial Company, Wenderoth Lind & Ponack, March 13, 1984: US04436685 (17 worldwide citation)

A continuous method of press forming a sheet resin, which is capable of subjecting to a consecutive process the steps of extruding a molten resin, forming the molten resin into a sheet resin strip, cutting the sheet resin strip into sheet resin pieces and press forming the sheet resin pieces. These ...


3
G Thomas Buehl, Leemer Cernohlavek: Low friction cleaner for magnetic transducer head. International Jensen Incorporated, Willian Brinks Olds Hofer Gilson & Lione, April 28, 1987: US04661874 (13 worldwide citation)

A cleaning tape for an apparatus of the type which includes a magnetic head and a drive mechanism for the head includes a cleaning member adapted to be moved past the magnetic head during a cleaning operation. The cleaning tape defines an array of raised surfaces, at least some of which are separate ...


4
Takayuki Yamano, Jiro Iwaya: Die set for press forming metal sheet and press forming method of metal sheet. Kobe Steel, Oblon Spivak McClelland Maier & Neustadt P C, October 10, 2006: US07117708 (9 worldwide citation)

A die set for press forming a metal sheet is provided, which comprises: at least a punch; and a die, wherein a punch-die clearance CL2 corresponding to a site to be formed immediately after the initial stage of press forming and a punch-die clearance CL1 corresponding to a site to be formed in the i ...


5
Suzuki Noriyuki, Kuwayama Takuya, Yamagata Mitsuharu: Press die device for thin sheet and press forming method. Nippon Steel, September 9, 2004: JP2004-249365 (8 worldwide citation)

PROBLEM TO BE SOLVED: To impart proper frictional force regardless of variable elements such as lubricity, surface condition, etc., between a metallic die and a work, and to constantly provide superior formed products regardless of variance of material property or environmental change.SOLUTION: This ...


6
Yamano Takayuki: Two-stage press forming method. Kobe Steel, December 25, 2008: JP2008-307557 (8 worldwide citation)

PROBLEM TO BE SOLVED: To provide a press forming method by which wall warp is reduced against a high strength material and also stable forming is obtained.SOLUTION: This two-stage press forming method has a first forming stage where a temporary formed body Ff which is provided with a first forming s ...


7
Eiki Tsushima: Cladding material and its manufacturing method, press-forming method, and heat sink using cladding material. Paul F Neils Esq, Akerman Senterfitt, May 31, 2011: US07951467 (7 worldwide citation)

Recent semiconductor device becomes high powered, and on the material of heat sinks on which these devices are mounted, lower thermal expansion coefficient and higher thermal conductivity are needed. For this requirement, material with thermal conductivity as high as Cu alone and also with low therm ...


8
Yuji Yamasaki: Press-forming method of a sheet and apparatus therefor. NKK Corporation, Frishauf Holtz Goodman Langer & Chick, May 26, 1998: US05755129 (7 worldwide citation)

A sheet pressing method and apparatus using a die and a punch. The invention encompasses holding a sheet between the die and a blank holder to form a first contact surface between the die and the sheet and a second contact surface between the sheet and the blank holder; forming a third contact surfa ...


9
Yoshida Satoyuki: Hot press-forming method and hot press-forming die. Nissan Motor, August 4, 2005: JP2005-205416 (6 worldwide citation)

PROBLEM TO BE SOLVED: To provide a hot press-forming method and a hot press-forming die by which drawing forming is possible without causing forming cracks.SOLUTION: In a hot press-forming method by which quenched formed products are obtained by performing the press-forming and the cooling of a heat ...


10
Nakada Masahiro, Hamada Koichi, Kaseda Yoshiyuki, Hirose Yozo: Hot press forming method of metal plate. Sumitomo Metal, January 22, 2002: JP2002-018531 (6 worldwide citation)

PROBLEM TO BE SOLVED: To provide a hot press forming method of a material to be worked capable of improving formability of hot forming and a dimensional precision after forming in obtaining an ultra high strength press formed part.SOLUTION: Inside a die or outside/around the die, one or more of elec ...