Patents by Inventor Yoshitomo Tezuka
Yoshitomo Tezuka has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20070215311Abstract: With a device including a melting furnace (11) for melting metals to form a molten metal (M), a tilted cooling body (31) allowing the molten metal (M) delivered from the melting furnace (11) to be poured thereon from above, and a tilted cooling body vibrating mechanism (36) for imparting vibration to the tilted cooling body (31), this invention can produce metal slurry possessing fine spherical crystals efficiently and continuously.Type: ApplicationFiled: May 19, 2005Publication date: September 20, 2007Applicant: Kiyotaka YOSHIHARAInventors: Tetsuichi Motegi, Kiichi Miyazaki, Kouichi Tada, Yoshitomo Tezuka, Kiyotaka Yoshihara
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Patent number: 6923244Abstract: A pouring apparatus for castings uses separate systems for supplying billets and delivering the semi-molten material, making it possible to readily modify the discharge flows and pressure. A pouring apparatus for castings that comprises solid material supply means for supplying solid material to a melting basin; heating means for heating the melting basin to semi-melt solid material supplied to the melting basin; a conveyance chamber provided adjacent to the melting basin; and delivery means for discharging, from a discharge nozzle, semi-molten material conveyed from the melting basin to the conveyance chamber.Type: GrantFiled: July 1, 2002Date of Patent: August 2, 2005Assignees: Seiko Idea Center Co., Ltd.Inventors: Tetsuichi Motegi, Kiichi Miyazaki, Yoshitomo Tezuka, Kiyotaka Yoshihara
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Patent number: 6616729Abstract: A method of grain refining cast magnesium alloy includes adding to a magnesium alloy melt containing aluminum and manganese, pure carbon powder, or a carbon source in combination with niobium pentoxide or vanadium pentoxide.Type: GrantFiled: July 30, 2002Date of Patent: September 9, 2003Assignees: Seiko Idea Center Co., Ltd.Inventors: Tetsuichi Motegi, Kiichi Miyazaki, Yoshitomo Tezuka, Kiyotaka Yoshihara, Eiji Yano
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Publication number: 20030019547Abstract: A method of grain refining cast magnesium alloy includes adding to a magnesium alloy melt containing aluminum and manganese, pure carbon powder, or a carbon source in combination with niobium pentoxide or vanadium pentoxide.Type: ApplicationFiled: July 30, 2002Publication date: January 30, 2003Applicant: Tetsuichi MOTEGI (30%)Inventors: Tetsuichi Motegi, Kiichi Miyazaki, Yoshitomo Tezuka, Kiyotaka Yoshihara, Eiji Yano
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Publication number: 20030000676Abstract: A pouring apparatus for castings uses separate systems for supplying billets and delivering the semi-molten material, making it possible to readily modify the discharge flows and pressure. A pouring apparatus for castings that comprises solid material supply means for supplying solid material to a melting basin; heating means for heating the melting basin to semi-melt solid material supplied to the melting basin; a conveyance chamber provided adjacent to the melting basin; and delivery means for discharging, from a discharge nozzle, semi-molten material conveyed from the melting basin to the conveyance chamber.Type: ApplicationFiled: July 1, 2002Publication date: January 2, 2003Applicant: Tetsuichi MOTEGIInventors: Tetsuichi Motegi, Kiichi Miyazaki, Yoshitomo Tezuka, Kiyotaka Yoshihara
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Publication number: 20020134471Abstract: An apparatus for the production of a platelike metal material includes a cooling unit for cooling a molten metal to form a metal slurry containing a solid phase, a pair of coarse rollers for cooling the metal slurry and, at the same time, rolling it to thereby give rise to a continuous, solidified, platelike metal material, and a cutting mechanism for cutting the continuous, solidified, platelike metal material into platelike metal materials of a stated length. Thus, platelike metal materials containing numerous uniform spherical crystals are obtained.Type: ApplicationFiled: March 25, 2002Publication date: September 26, 2002Applicant: Tetsuichi Motegi (20%)Inventors: Tetsuichi Motegi, Kiichi Miyazaki, Yoshitomo Tezuka, Kiyotaka Yoshihara
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Publication number: 20010020526Abstract: A casting method includes the steps of cooling a molten metal to form a metal slurry containing a solid phase, cooling the metal slurry to form a solid metal material and heating the metal material to a semi-melted metal material and supplying it into a mold. A casting apparatus includes a first device for cooling a molten metal to form a metal slurry containing a solid phase and a second device for cooling the metal slurry to form a solid metal material. The metal material is then heated to a semi-melted state and the resultant metal material is poured into a mold. A method for manufacturing a metal material being heated to a semi-melted state and then supplied into a mold, includes the steps of cooling a molten metal to form a metal slurry containing a solid phase and cooling the metal slurry to form a solid metal material.Type: ApplicationFiled: March 7, 2001Publication date: September 13, 2001Inventors: Tetsuichi Motegi, Kiichi Miyazaki, Yoshitomo Tezuka, Kiyotaka Yoshiwara
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Patent number: 4610926Abstract: A reinforcing steel fiber of the type to be mixed in concrete has a shaft portion at a center part, which has strength as a mother material. There are on both sides of the shaft portion, alternately formed knots expanding in thickness and knots expanding in width. The knots expanding in width become increased in width in the direction towards the ends of the fiber while they become decreased in thickness while knots expanding in thickness extend almost uniformly over the full length.Type: GrantFiled: December 16, 1983Date of Patent: September 9, 1986Assignee: Tokyo Rope Manufacturing Co., Ltd.Inventor: Yoshitomo Tezuka
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Patent number: 4560622Abstract: The present invention is concerned with a steel fiber for reinforcing concrete. The steel fiber according to the present invention is a needle-shaped chip resulting from directly machining a steel ingot material. The fiber has a wrinkled surface with a plurality of rugged waves along the length of the fiber. This new production employs a plain milling cutter having a plurality of cutting edges of negative rake angle and twist angle with respect to an axis of the cutter for machining the ingot material by a down-cut milling under conditions of high speed and short depth of cut.Type: GrantFiled: August 27, 1984Date of Patent: December 24, 1985Assignee: Aida Engineering, Ltd.Inventors: Yoshitomo Tezuka, Takeo Nakagawa, Kazusuke Kobayashi
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Patent number: 4559276Abstract: Steel block is directly subjected to cutting to produce steel fibers for reinforcing concrete, which are flat within determined conditions that if length of the steel fiber is L, width is W, thickness is t and flat index is N, and if L is 20 to 40 mm, N=W/t=7 to 9, wherein W=1.5 to 2.5 and t=0.2 to 0.3 mm.Type: GrantFiled: June 7, 1982Date of Patent: December 17, 1985Assignee: Aida Engineering Ltd.Inventor: Yoshitomo Tezuka
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Patent number: 4023738Abstract: An apparatus for carrying out the process of producing fine iron particles which comprises in combination an endless chain trained about a pair of opposite and spaced drive and driven sprockets and having a plurality of spaced permanent magnets attached to the exposed side of the chain, a non-magnetic chip guide plate positioned above and in parallel to the chain and having a hopper at one end and a chip discharge chute at the other end and a magnetic striking member normally disposed above and spaced from said chip guide plate and connected to a reciprocal impact means to be moved toward and away from said guide plate as the impact means moves reciprocally.Type: GrantFiled: January 22, 1976Date of Patent: May 17, 1977Assignee: Aida Engineering, Ltd.Inventors: Susumu Ogihara, Yoshitomo Tezuka
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Patent number: 4014561Abstract: A suspension mechanism for a four-wheeled automotive vehicle body with independently suspended wheels, comprises front and rear pairs of transversely aligned horizontal torsion bars rotatably supported by front and rear parts of the body. The transversely outer ends of these torsion bars are indirectly coupled to the respective wheels, so that these torsion bars undergo torsional displacement when their associated wheels are moved up and down. The transversely inner ends of the front and rear torsion bars are rigidly coupled to front and rear vertical arms the free ends of which are mutually connected by links extending in the front-to-rear direction of the body. One of the front and rear pairs of vertical arms are pivotally connected by a transverse lever pivotally supported at its middle parts by the vehicle body, whereby the diagonally opposite wheels move in the same vertical direction while the transversely opposite wheels move in the opposite vertical directions.Type: GrantFiled: March 12, 1976Date of Patent: March 29, 1977Assignee: Aida Engineering Kabushiki KaishaInventors: Ryuichi Tomiya, Koji Kaki, Yoshitomo Tezuka