Patents by Inventor Yoshihisa Yamamoto
Yoshihisa Yamamoto 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: 20040139742Abstract: In a transmitting system for a small-sized vehicle, a centrifugal clutch, and a torque converter including a pump impeller connected to an output drum of the centrifugal clutch and a turbine impeller connected to an output gear, are placed between a crankshaft of an engine and the output gear. The pump impeller and the output drum adjacent to the pump impeller are integrally coupled, with an open surface of the output drum facing to an opposite side to the pump impeller, to be constructed as a single component. Thus, occurrence of rotation vibrations and unusual noises can be prevented without requiring machining with high precision, and the numbers of components and assembling steps can be reduced while providing favorable maintainability.Type: ApplicationFiled: November 4, 2003Publication date: July 22, 2004Inventors: Seiji Makita, Yoshihisa Yamamoto
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Patent number: 6754572Abstract: A system for control of the discharge pressure of an input clutch hydraulic servo at the time of a D→N shift, in which the peak value (DN_Omega_max) rate of change of the rotational speed of an input shaft increases if the initial value (DN sol Sweep Start SLT signal) of the pressure adjusting control becomes high or low. A convergence region (DN_Omega_limit_max) is provided. On the basis of comparison between the previous peak value (DN_Omega_max_ave1) and the present peak value (DN_Omega_max_ave2), and the direction of correction, the learning is performed in accordance with various maps in a direction toward the convergence region.Type: GrantFiled: April 23, 2002Date of Patent: June 22, 2004Assignee: Aisin AW Co., Ltd.Inventors: Tsuyoshi Kawamoto, Akira Isogai, Kazufumi Ando, Yoshihisa Yamamoto, Shigetaka Wakisaka, Takayuki Kubo, Munehiro Tashiro
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Patent number: 6728281Abstract: A quantum-dot photon turnstile device is capable of producing a stream of regulated and directed single pairs of photons with opposite circular polarizations. This device operates by injecting pairs of electrons and holes, alternately, into a single quantum dot, where they combine to form photons. The device will efficiently and reliably produce a directed beam of such photons at regular time intervals. It will be able to operate at high frequency and at high temperature. Such a stream of regulated photon pairs will be useful in quantum cryptography, quantum computing, low-power optical communications, as a light standard, and in many other areas of technology and fundamental science.Type: GrantFiled: February 9, 2001Date of Patent: April 27, 2004Assignees: The Board of Trustees of the Leland Stanford Junior University, Japan Science and Technology CorporationInventors: Charles Santori, Oliver Benson, Yoshihisa Yamamoto, Matthew Pelton, Jungsang Kim
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Patent number: 6723020Abstract: A planetary carrier supports pinion gears of a planetary gear set via pinion shafts. Each hole in which a pinion shaft is mounted has a shallow hardened wall surface that is hardened by very-high-frequency induction heating and quenching. Therefore, the durability of the pinion shaft-supporting holes of a cold-forged piece or a pressed piece can be improved without thermal strain.Type: GrantFiled: May 22, 2002Date of Patent: April 20, 2004Assignee: Aisin AW Co., Ltd.Inventors: Kouji Ohbayashi, Kazunari Suzuki, Yoshihisa Yamamoto, Kengo Nomura
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Patent number: 6708121Abstract: An analyzing apparatus 1, such as a fluorescence X-ray analyzer, being able to analyze samples automatically, by transferring the samples into an analysis chamber, sequentially, comprising: an interruption recover device 11 for automatically turning on an electric power supply for the analyzing apparatus, when electricity is re-established after interruption thereof; and a data processing computer 2, being connected through the uninterruptible power source 3 to an electric power source, wherein, the data processing computer 2 includes function for temporality memorizing analysis information of the automatic analyzing apparatus when the interruption of electricity occurs, and function for supplying electricity to the analyzing apparatus 1 through the interruption recover device 11 and also for re-starting the analysis of the samples upon the basis of the memorized analysis information at the time when the interruption occurs, when the electricity is recovered, thereby being suitable for unmanned operation therType: GrantFiled: November 1, 2001Date of Patent: March 16, 2004Assignee: Rigaku Industrial CorporationInventors: Akira Arake, Hiroaki Kita, Yoshihisa Yamamoto
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Patent number: 6684144Abstract: During an upshift in a full-throttle state, the output of a shift command (Us1) from a control unit is followed by a delay in initiation of an actual shift, due to a delay in increase in oil pressure, a rise in the clutch torque load, etc. A shift initiation (Uj) is determined by comparing the input rotational speed (Ni) with the product of multiplication of the output rotational speed (vehicle speed) (No) by the pre-shift gear ratio. The shift point (Mp1) is learning-corrected based on the shift initiation-time engine rotational speed (NeI). Therefore, false learning is avoided even if the engine races during a shift.Type: GrantFiled: April 5, 2002Date of Patent: January 27, 2004Assignee: Aisin AW Co., Ltd.Inventors: Takahiro Sekii, Yoshihisa Yamamoto, Masamichi Unoki, Tsutomu Mizutani
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Publication number: 20030166780Abstract: A thermoplastic resin composition comprising a blend obtainable by blending 0.1 to 99 % by weight of (a) a fluorine-containing polymer having a number-average molecular weight of 2000 to 1000000 and having hydroxy group or epoxy group at least at one of end portions of a main chain and side chain of the polymer, and 1 to 99.9 % by weight of (b) a heat resisting thermoplastic resin having a crystalline melting point or glass transition temperature of not less than 150° C. The present invention can provide a composition comprising various heat resisting thermoplastic resins and a fluorine-containing polymer having a functional group which is capable of developing an affinity with said resins and forming a uniform dispersion.Type: ApplicationFiled: December 31, 2002Publication date: September 4, 2003Inventors: Tetsuo Shimizu, Yoshihisa Yamamoto, Seitaro Yamaguchi, Nobuhiko Tsuda, Noriyasu Yamane, Takafumi Yamato, Masahiro Kumegawa, Takayuki Araki
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Patent number: 6552127Abstract: A thermoplastic resin composition comprising a blend obtainable by blending 0.1 to 99% by weight of (a) a fluorine-containing polymer having a number-average molecular weight of 2000 to 1000000 and having hydroxy group or epoxy group at least at one of end portions of a main chain and side chain of the polymer, and 1 to 99.9% by weight of (b) a heat resisting thermoplastic resin having a crystalline melting point or glass transition temperature of not less than 150° C.Type: GrantFiled: March 31, 2000Date of Patent: April 22, 2003Assignee: Daikin Industries, Ltd.Inventors: Tetsuo Shimizu, Yoshihisa Yamamoto, Seitaro Yamaguchi, Nobuhiko Tsuda, Noriyasu Yamane, Takafumi Yamato, Masahiro Kumegawa, Takayuki Araki
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Publication number: 20020198647Abstract: A system for control of the discharge pressure of an input clutch hydraulic servo at the time of a D→N shift, in which the peak value (DN_Omega_max) rate of change of the rotational speed of an input shaft increases if the initial value (DN sol Sweep Start SLT signal) of the pressure adjusting control becomes high or low. A convergence region (DN_Omega_limit_max) is provided. On the basis of comparison between the previous peak value (DN_Omega_max_ave1) and the present peak value (DN_Omega_max_ave2), and the direction of correction, the learning is performed in accordance with various maps in a direction toward the convergence region.Type: ApplicationFiled: April 23, 2002Publication date: December 26, 2002Inventors: Tsuyoshi Kawamoto, Akira Isogai, Kazufumi Ando, Yoshihisa Yamamoto, Shigetaka Wakisaka, Takayuki Kubo, Munehiro Tashiro
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Publication number: 20020179205Abstract: A planetary carrier supports pinion gears of a planetary gear set via pinion shafts. Each hole in which a pinion shaft is mounted has a shallow hardened wall surface that is hardened by very-high-frequency induction heating and quenching. Therefore, the durability of the pinion shaft-supporting holes of a cold-forged piece or a pressed piece can be improved without thermal strain.Type: ApplicationFiled: May 22, 2002Publication date: December 5, 2002Inventors: Kouji Ohbayashi, Kazunari Suzuki, Yoshihisa Yamamoto, Kengo Nomura
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Publication number: 20020160643Abstract: Provided is a surface-mounted IC socket having a base housing (10) and a gripping sheet (3). The base housing (10) has a top surface and contacts (20). A slider (30) moves over the top surface of the base housing (10) and has an upper surface with a plurality of pin contact holes (33) arranged in the form of a matrix that receives pin contacts formed on an IC package that contact the contacts (20). Projecting parts (34a, 34b, 34c) having outer edges protrude from the upper surface. The gripping sheet (3) has cuts (6) corresponding to the projecting parts (34a, 34b, 34c) and is pasted on the upper surface such that the cuts (6) correspond to the projecting parts (34a, 34b, 34c).Type: ApplicationFiled: April 25, 2002Publication date: October 31, 2002Inventors: Shintaro Abe, Ikuo Enomoto, Yoshihisa Yamamoto
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Publication number: 20020160880Abstract: During an upshift in a full-throttle state, the output of a shift command (Us1) from a control unit is followed by a delay in initiation of an actual shift, due to a delay in increase in oil pressure, a rise in the clutch torque load, etc. A shift initiation (Uj) is determined by comparing the input rotational speed (Ni) with the product of multiplication of the output rotational speed (vehicle speed) (No) by the pre-shift gear ratio. The shift point (Mp1) is learning-corrected based on the shift initiation-time engine rotational speed (NeI). Therefore, false learning is avoided even if the engine races during a shift.Type: ApplicationFiled: April 5, 2002Publication date: October 31, 2002Inventors: Takahiro Sekii, Yoshihisa Yamamoto, Masamichi Unoki, Tsutomu Mizutani
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Patent number: 6440511Abstract: In a thermoplastic resin laminate having at least three thermoplastic resin layers, wherein an intermediate layer interposed between a first layer of a thermoplastic resin A1 and a second layer of a thermoplastic resin B1, which are not bonded each other, is a thermoplastic resin composition which contains as a main component a thermoplastic resin A2 having a bonding property to the thermoplastic resin A1 and a thermoplastic resin B2 having a bonding property to the thermoplastic resin B1 and forms a dispersion structure, wherein the thermoplastic resin A2 forms a continuous phase and the thermoplastic resin B2 forms a dispersed phase in the intermediate layer at the vicinity of the interface between the intermediate layer and the first layer, and wherein the thermoplastic resin B2 forms the continuous phase and the thermoplastic resin A2 forms the dispersed phase in the intermediate layer at the vicinity of the interface between the intermediate layer and the second layer, the first layer and the second layeType: GrantFiled: September 17, 1997Date of Patent: August 27, 2002Assignee: Daikin Industries, Ltd.Inventors: Tetsuo Shimizu, Hirofumi Nishibayashi, Takeshi Inaba, Yoshihisa Yamamoto, Takafumi Yamato, Masakatsu Kitano
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Patent number: 6437413Abstract: A quantum computer comprises a crystal lattice having storage atoms. The storage atoms have nuclear storage spins, and quantum bits are stored as orientations of the storage spins. A magnetic field is applied to the crystal, the magnetic field having a gradient on the order of 1T/&mgr;m. The gradient is generated by a micromagnet. The electrons of the crystal acquire a regular order, and the storage spins are initialized by inducing combined electron-nucleus transitions in the crystal, thereby transferring the electronic order to the storage spins. The storage spins are decoupled from each other by a decoupling magnetic field. Quantum logic operations are performed on the storage spins. Certain quantum logic operations require a modification of the decoupling field to recouple a plurality of the storage spins. Final polarizations of the storage spins are measured.Type: GrantFiled: November 10, 1999Date of Patent: August 20, 2002Assignee: The Board of Trustees of the Leland Standford Junior UniversityInventors: Fumiko Yamaguchi, Yoshihisa Yamamoto
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Patent number: 6422356Abstract: The automatic transmission of the present invention prevents fluctuation of torque transmission through a band brake. In the hydraulic operator for the band brake, a resilient elastic cushion is provided between a rod abutting one end of the band of the band brake and a piston. Any slippage between the band and drum of the band brake will result in oscillation of the rod. However, the elastic cushion absorbs oscillation of the rod, thereby isolating the piston from that oscillation.Type: GrantFiled: September 22, 1999Date of Patent: July 23, 2002Assignee: Aisin AW Co., Ltd.Inventors: Akitomo Suzuki, Hiroshi Tsutsui, Tsuyoshi Kawamoto, Masahiro Ida, Yoshihisa Yamamoto, Masaaki Nishida, Kazumasa Tsukamoto
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Patent number: 6390850Abstract: A card connector provides for reliable grounding and, at the same time, makes it possible to simplify the mounting, maintenance and servicing operations. Card connector (10) comprises a main body (11) including a dielectric housing (13) accommodating multiple electrical contacts (12) and a grounding member (14) that is fabricated separately from the main body (11) and is secured thereto. The grounding member (14) has tabs (17) that electrically connect with an outer surface of a card inserted in the card connector (10) and connecting sections (16), the purpose of which is to electrically connect with electrical circuitry of a circuit board. The grounding member (14) can be latchably attached to the main body (11) that is mounted to the circuit board (100), and if necessary, it can be removed, thus providing access to connecting sections (12a) of electrical contacts (12).Type: GrantFiled: May 13, 1999Date of Patent: May 21, 2002Assignee: The Whitaker CorporationInventors: Yoji Yoshimura, Yoshihisa Yamamoto, Takashi Futatsugi
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Publication number: 20020052695Abstract: An analyzing apparatus 1, such as a fluorescence X-ray analyzer, being able to analyze samples automatically, by transferring the samples into an analysis chamber, sequentially, comprising: an interruption recover device 11 for automatically turning on an electric power supply for the analyzing apparatus, when electricity is re-established after interruption thereof; and a data processing computer 2, being connected through the uninterruptible power source 3 to an electric power source, wherein, the data processing computer 2 includes function for temporality memorizing analysis information of the automatic analyzing apparatus when the interruption of electricity occurs, and function for supplying electricity to the analyzing apparatus 1 through the interruption recover device 11 and also for re-starting the analysis of the samples upon the basis of the memorized analysis information at the time when the interruption occurs, when the electricity is recovered, thereby being suitable for unmanned operation therType: ApplicationFiled: November 1, 2001Publication date: May 2, 2002Inventors: Akira Arake, Hiroaki Kita, Yoshihisa Yamamoto
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Patent number: 6350142Abstract: A compact ZIF type socket is provided having the durability to withstand numerous movements of the slider. The ZIF type IC socket 1 consists of a base housing assembly 10 that accommodates numerous contacts, and a cover housing assembly 40 that can slide over the base housing assembly 10. The cover housing assembly 40 is caused to move in relative terms by inserting a plate-form tool 99 into tool insertion holes 65 and 85 respectively formed in a metal supporting plate 60 on the side of the base housing assembly 10 and a metal supporting plate 80 on the side of the cover housing assembly 40, and rotating this tool 99. The action points of the tool insertion holes 65 and 85 contacted by the tool 99 are formed as circular-arc-form projections 75, 76, 95 and 96. Accordingly, the force of the tool 99 can be transmitted to the base housing assembly 10 and cover housing assembly 40 without causing indentation or damage, etc.Type: GrantFiled: June 15, 2000Date of Patent: February 26, 2002Assignee: The Whitaker CorporationInventors: Hiroshi Shirai, Yoshihisa Yamamoto, Tomoo Yamada, Shintaro Abe
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Patent number: 6331454Abstract: An insulated lattice is prepared with a plurality of lattice oriented atoms to create a substantially planar surface having a lattice arrangement. Any unsatisfied chemical bonds are terminated along the substantially planar surface by placing atoms at the site of the unsatisfied chemical bonds to terminate the unsatisfied chemical bonds and insulate the surface to form a platform. In one aspect of the invention, the insulator atoms are removed at predetermined locations. Atoms to form the atomic chain are placed at predetermined locations on the insulated lattice platform to form a first atomic chain which behaves as one of a conductor, a semiconductor and an insulator. A second atomic chain is also placed at predetermined locations on the insulated lattice platform so that the second chain behaves as another of a conductor, a semiconductor and an insulator.Type: GrantFiled: February 10, 1999Date of Patent: December 18, 2001Assignees: Board of Regents of the Leland Stanford Junior University, Research Development CorpInventors: Toshishige Yamada, Yoshihiro Takiguchi, Dehuan Huang, Yoshihisa Yamamoto
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Publication number: 20010014554Abstract: A card connector provides for reliable grounding and, at the same time, makes it possible to simplify the mounting, maintenance and servicing operations. Card connector (10) comprises a main body (11) including a dielectric housing (13) accommodating multiple electrical contacts (12) and a grounding member (14) that is fabricated separately from the main body (11) and is secured thereto. The grounding member (14) has tabs (17) that electrically connect with an outer surface of a card inserted in the card connector (10) and connecting sections (16), the purpose of which is to electrically connect with electrical circuitry of a circuit board. The grounding member (14) can be latchably attached to the main body (11) that is mounted to the circuit board (100), and if necessary, it can be removed, thus providing access to connecting sections (12a) of electrical contacts (12).Type: ApplicationFiled: May 13, 1999Publication date: August 16, 2001Inventors: YOJI YOSHIMURA, YOSHIHISA YAMAMOTO, TAKASHI FUTATSUGI