Patents by Inventor Tadatoshi Yamada
Tadatoshi Yamada 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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Patent number: 6029377Abstract: An athletic shoe has a sole composed of an inner layer and an outer layer that comes into contact with the ground surface. In the athletic shoe, a plurality of downward projecting projections are formed on the lower surface of the outer layer as parts of the outer layer, and a ring-shaped flange portion is formed as a part of the outer layer to surround the corresponding projection. The ring-shaped flange portion slants upward from its outer edge toward the inner edge. When a downward pressure greater than a predetermined value acts onto a portion where the projection and the corresponding flange portion are formed, the flange deforms in order to move the projection downward. In another athletic shoe, a plurality of projections is formed on the outer surface of a sole, and a depression is formed in the outer surface of the sole in the vicinity of each of the projections.Type: GrantFiled: June 19, 1998Date of Patent: February 29, 2000Assignee: Bridgestone Sports, Co., Ltd.Inventors: Takayuki Niikura, Tadatoshi Yamada
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Patent number: 6021590Abstract: A spike for a sole is provided with a pin and a receiving portion for receiving a rear end portion of the pin, an elastic member is provided between the rear end portion of the pin and the receiving portion, a sports shoe having elastic spikes is also provided with the sole, and the rubber spikes being arranged in combination with the elastic spikes each including the pin, the receiving portion and the elastic member.Type: GrantFiled: March 20, 1997Date of Patent: February 8, 2000Assignee: Bridgestone Sports Co., Ltd.Inventors: Mitsuhiko Morimoto, Tadatoshi Yamada
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Patent number: 5625331Abstract: A superconducting deflection electromagnet apparatus for deflecting an electron beam includes a liquid helium reservoir 21 disposed outside of the magnetic shield 11 surrounding the cryostat 4 accommodating the upper and lower liquid helium containers 2 in which coil assemblies 1, 31, 32 are disposed. Preferably, the upper and lower liquid helium containers 2 are supported from the cryostat 4 by means of the thermally insulating support members 5, 6 and 8 whose positions are adjustable by means of the threaded projections 5a, 6a and 8a and the nuts 52, 53, 62, 63, 82, 83 engaging therewith. The nuts secure the respective thermally insulating support members to the cap-shaped fixing members 44, 47, 49 attached to the extensions 43, 45, 49 of the cryostat 4.Type: GrantFiled: October 19, 1993Date of Patent: April 29, 1997Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Tadatoshi Yamada, Takeo Kawaguchi, Tetuya Matuda, Toshie Takeuchi, Ituo Kodera, Shunji Yamamoto, Shirou Nakamura
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Patent number: 5556098Abstract: A three-piece solid golf ball comprising; a center core, an intermediate layer, and a cover enclosing the core through the intermediate layer,said center core formed of a polybutadiene base rubber and having a diameter of at least 26 mm, a specific gravity of less than 1.4, and a hardness up to 80 on JIS C scale,said intermediate layer formed of a thermoplastic polyester elastomer and having a thickness of at least 1 mm, a specific gravity of less than 1.2, and a hardness of less than 80 on JIS C scale, andsaid cover having a thickness of 1 to 3 mm, and a hardness of at least 85 on JIS C scale.Type: GrantFiled: July 8, 1994Date of Patent: September 17, 1996Assignee: Bridgestone Sports Co., Ltd.Inventors: Hiroshi Higuchi, Hisashi Yamagishi, Yoshinori Egashira, Tadatoshi Yamada
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Patent number: 5553852Abstract: A three-piece solid golf ball comprising a center core, an intermediate layer, and a cover. The center core (1) has a diameter of at least 29 mm, a hardness in the range of 45-80 JIS C and a specific gravity of less than 1.4. The intermediate layer (2) has a thickness of at least 1 mm, a specific gravity of less than 1.2, and a hardness of at least 85 on JIS C scale. The cover (3) has a thickness of 1-3 mm and a hardness of 50-85 JIS C. The ball has a good total balance of properties in that feeling and controllability are improved at no sacrifice of flying performance and durability.Type: GrantFiled: July 8, 1994Date of Patent: September 10, 1996Assignee: Bridgestone Sports Co., Ltd.Inventors: Hiroshi Higuchi, Hisashi Yamagishi, Yoshinori Egashira, Tadatoshi Yamada
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Patent number: 5268353Abstract: An oxide superconductor having good current-carrying characteristics can be manufactured by a method including the steps of mixing and baking a plurality of different kinds of ingredient material at a predetermined proportion and obtaining a mixed powder having oxide superconducting powder as a main ingredient, and the step of placing a magnet close to the mixed powder to separate the oxide superconducting powder through the utilization of the magnetic repulsive force due to the Meissner effect of the superconductor. In preferred embodiments, the separating step is carried out in a buoyancy medium and a filter is employed for unifying the particle size of the oxide superconductive powder within a predetermined range.Type: GrantFiled: February 7, 1989Date of Patent: December 7, 1993Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Akinori Ohara, Shunji Yamamoto, Tadatoshi Yamada
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Patent number: 5117212Abstract: An electromagnet for a charged-particle apparatus. The electromagnet of the first form of this invention may consist of a deflecting electromagnet comprising an iron core equipped with clamping plates having cavities through which a vacuum chamber runs. Provided in these cavities are small-sized coils using the iron core as the magnetic path and adapted to adjust the orbit for charged particles. The electromagnet of the second form of this invention consists of a deflecting electromagnet equipped with a banana-shaped principal coil whose radius of curvature is larger in its end sections than in its middle section, thereby leveling the magnetic-field distribution on the equilibrium orbit. In the electromagnet of the third form of this invention, the thickness of the iron core, surrounding the principal coil, is different at different positions along the equilibrium orbit for charged particles, thereby making it possible to obtain some desired magnetic-field distribution.Type: GrantFiled: January 11, 1990Date of Patent: May 26, 1992Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Shunji Yamamoto, Tadatoshi Yamada
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Patent number: 5117194Abstract: A device for accelerating and storing charged particles of the present invention comprises a vacuum duct which has two opposite linear portions and two opposite curved portions respectively connected to the linear portions and which functions to maintain the orbit of revolution of the charged particles in a vacuum; an accelerating device for accelerating charged particles which is disposed on the orbit of the charged particles; a pair of bending magnets which are respectively disposed on the curved portions of the vacuum duct; and a pair of quadrupole electromagnets which are respectively disposed on the linear portions of the vacuum duct and at least one of which is disposed at a position at a given distance from the center of the corresponding linear portion.Type: GrantFiled: August 25, 1989Date of Patent: May 26, 1992Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Tetsuya Nakanishi, Tadatoshi Yamada, Shunji Yamamoto, Tetsuya Matsuda, Toshie Ushijima
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Patent number: 5111173Abstract: Semicircular superconducting deflection magnets for deflecting electron beams along a semiconductor orbit. The magnet 1 comprises a pair of race-track shaped main coils 2 and 3 disposed symmetrically with respect to the plane of the orbit S. Each one of the main coils 2 and 3 is divided into two parts 21 and 22 or 31 and 32, the end portions 21a and 22a or 31a and 32a being displaced from each other in the direction of the orbit S, so that the magnetomotive force thereof is distributed evenly along the orbit S (FIGS. 12 through 14). According to another aspect, rectangular cancellation coils 25, 26, 35, and 36 are provided at the end portions 21a, 22a, 31a, and 32a, respectively, of the coil parts 21, 22, 31, and 32, such that the magnetomotive force of each one of the end portions is cancelled by the magnetomotive force of the adjacent parallel running side of a cancellation coil (FIGS. 21 through 23).Type: GrantFiled: September 7, 1990Date of Patent: May 5, 1992Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Tetsuya Matsuda, Shunji Yamamoto, Tadatoshi Yamada, Toshie Ushijima
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Patent number: 4908580Abstract: A vacuum chamber for a superconducting SOR apparatus comprises a main chamber through which a beam of charged particles can pass and an SOR chamber which opens onto the inside of the main chamber. The main chamber has a connecting flange formed on each end, and the SOR chamber has a connecting flange formed on its outer end. The dimensions of the vacuum chamber are such that the entire vacuum chamber can fit into the gap between the vacuum tanks of a superconducting bending magnet for the SOR apparatus. The vacuum chamber may further comprise an SOR port in the form of a tube having a flange which connects to the flange of the SOR chamber. The cross-sectional dimensions of the SOR port increase from the inner end which is connected to the SOR chamber to the outer end.Type: GrantFiled: February 6, 1989Date of Patent: March 13, 1990Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Tadatoshi Yamada, Masatami Iwamoto, Akinori Ohara, Shirou Nakamura, Yuuichi Yamamoto
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Patent number: 4816962Abstract: A uniform magnetic field coil assembly having a plurality of pairs of coil elements each included in circuit comprising the parallel connection of a permanent current switch and its protecting means and an individual exciting power source, wherein the plurality of pairs of coil elements are symmetrically disposed against a plane perpendicular to the central axis of the uniform magnetic field coil assembly in the longitudinal direction and the plurality of pairs of coil elements are connected in series, thereby regulating the current flowing to each of the plurality of pairs of coil assembly elements for forming the uniform magnetic field coil as predetermined.Type: GrantFiled: November 20, 1987Date of Patent: March 28, 1989Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Tadatoshi Yamada, Masao Morita, Shunji Yamamoto, Tetsuya Matsuda, Masatami Iwamoto
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Patent number: 4806871Abstract: A synchrotron comprises a tubular vacuum chamber forming a closed orbit, charged particles moving around therein; less than four bipolar magnets installed along said vacuum chamber and used to deflect said charged particles; and means for easing the converging action to said charged particles in the horizontal direction due to said bipolar magnets.Type: GrantFiled: May 27, 1987Date of Patent: February 21, 1989Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Kazunori Ikegami, Souitirou Okuda, Tadatoshi Yamada, Shunji Yamamoto, Tetsuya Matsuda
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Patent number: 4783634Abstract: A superconducting synchrotron orbital radiation (SOR) apparatus having a plurality of deflecting electromagnets each comprising first and second superconducting coils which are immersed in liquid helium contained in helium tanks. The helium tanks are surrounded by nitrogen shields which are cooled by liquid nitrogen in nitrogen contained tanks. One of the helium tanks is equipped with a liquid helium supply port and a helium gas exhaust port. All of the other helium tanks are connected with this helium tank such that liquid helium which is supplied to this one helium tank automatically flows to the other helium tanks and such that helium gas from the other helium tanks automatically flows to this helium tank and is exhausted.Type: GrantFiled: February 25, 1987Date of Patent: November 8, 1988Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Yuuichi Yamamoto, Masatami Iwamoto, Tadatoshi Yamada, Akinori Ohara
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Patent number: 4751470Abstract: A charged particle accelerating apparatus has a vacuum chamber for transporting, accelerating, deflecting or storing charged particles. A layer of a low gas-generating material is placed in the vacuum chamber at a position where radiation generated by deflection of the charged particles are irradiated, the low gas-generating material having properties of generating an amount of gas less than a material constituting the vacuum chamber.Type: GrantFiled: February 11, 1987Date of Patent: June 14, 1988Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Kazunori Ikegami, Shiro Nakamura, Tadatoshi Yamada, Shunji Yamamoto, Tetsuya Matsuda, Tokio Fukunaga
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Patent number: 4740692Abstract: An apparatus for analyzing in a mass spectrograph ions contained in gas emitted from a sample upon application of a laser beam spot to the surface of the sample, the apparatus including a vacuum vessel which houses the mass spectrograph therein, a support structure which supports the sample outside the vacuum vessel, a first laser irradiation device for applying a first laser beam to the surface of the sample, and a second laser irradiation device for applying a second laser beam to the flow of gas generated from the sample and flowing toward the mass spectrograph in the vacuum vessel through a nozzle provided in the same vessel.Type: GrantFiled: June 12, 1986Date of Patent: April 26, 1988Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Takashi Yamamoto, Noriyuki Mizuta, Tadatoshi Yamada, Akira Ishimori
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Patent number: 4737727Abstract: A charged beam apparatus comprises vacuum vessels for accommodating superconducting coils in a heat-insulating manner, a charged beam vacuum chamber that provides a passage for a charged beam, and a vacuum chamber for synchrotron radiation that is coupled to the charged beam vacuum chamber and through which is passed the synchrotron radiation that is produced by the charged beam when it is bent by the superconducting coils, the vacuum vessels being detachable from the charged beam vacuum chamber.Type: GrantFiled: February 12, 1987Date of Patent: April 12, 1988Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Tadatoshi Yamada, Shiro Nakamura, Takafumi Nakagawa, Yuuichi Yamamoto
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Patent number: 4728894Abstract: A high frequency coil for nuclear magnetic resonance comprises a saddle coil formed by interposing electric insulator members between adjacent ones of a plurality of metal straps. The metal straps are copper straps, and the electric insulator members are capacitors or air gaps.Type: GrantFiled: March 21, 1985Date of Patent: March 1, 1988Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Kiyoshi Yoda, Tadatoshi Yamada, Satoshi Fujimura
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Patent number: 4713686Abstract: This high speed, instantaneous multi-image recorder comprises a video camera, sensor unit and light projector. A frame memory is connected to the video camera, a flashtube is to the light projector, a retarder is to the sensor unit. The flashtube is connected to the retarder, and a monitor is connected to the frame memory. The video camera, sensor unit and light projected are placed as directed toward a moving object which is, for example, a golf club. When the golfer swings the club, the sensor unit detects the club, the light projector flashes, and the video camera picks up the golf ball and club head around the moment of impacting. Thus, the video camera catches many instantaneous poses within a frame. Many such images picked up in a signal frame of the video camera are displayed on the monitor screen for analysis.Type: GrantFiled: June 30, 1986Date of Patent: December 15, 1987Assignee: Bridgestone CorporationInventors: Haruhiko Ozaki, Tadatoshi Yamada, Kunio Machida, Kiyoshi Ohno, Hirato Shimazaki, Hidekimi Inoue, Ryohei Uji
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Patent number: RE42752Abstract: A three-piece solid golf ball comprising a center core, an intermediate layer, and a cover. The center core (1) has a diameter of at least 29 mm, a hardness in the range of 45-80 JIS C and a specific gravity of less than 1.4. The intermediate layer (2) has a thickness of at least 1 mm, a specific gravity of less than 1.2, and a hardness of at least 85 on JIS C scale. The cover (3) has a thickness of 1-3 mm and a hardness of 50-85 JIS C. The ball has a good total balance of properties in that feeling and controllability are improved at no sacrifice of flying performance and durability.Type: GrantFiled: April 22, 2005Date of Patent: September 27, 2011Assignee: Bridgestone Sports Co., Ltd.Inventors: Hiroshi Higuchi, Hisashi Yamagishi, Yoshinori Egashira, Tadatoshi Yamada
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Patent number: RE42801Abstract: A three-piece solid golf ball comprising a center core, an intermediate layer, and a cover. The center core (1) has a diameter of at least 29 mm, a hardness in the range of 45-80 JIS C and a specific gravity of less than 1.4. The intermediate layer (2) has a thickness of at least 1 mm, a specific gravity of less than 1.2, and a hardness of at least 85 on JIS C scale. The cover (3) has a thickness of 1-3 mm and a hardness of 50-85 JIS C. The ball has a good total balance of properties in that feeling and controllability are improved at no sacrifice of flying performance and durability.Type: GrantFiled: June 28, 2002Date of Patent: October 4, 2011Assignee: Bridgestone Sports Co., Ltd.Inventors: Hiroshi Higuchi, Hisashi Yamagishi, Yoshinori Egashira, Tadatoshi Yamada