Patents by Inventor Masahiko Nakagawa
Masahiko Nakagawa 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: 11312235Abstract: A drive switching mechanism of a utility vehicle includes: a two-wheel drive and four-wheel drive switching device that switches between two-wheel drive and four-wheel drive of the utility vehicle; and a control unit that controls the drive switching mechanism. The two-wheel drive and four-wheel drive switching device switches between two-wheel drive and four-wheel drive by using a first clutch. The control unit permits the two-wheel drive and four-wheel drive switching device to switch from two-wheel drive to four-wheel drive when a rotation difference of the first clutch becomes equal to or smaller than a predetermined value.Type: GrantFiled: December 2, 2020Date of Patent: April 26, 2022Assignee: KAWASAKI MOTORS, LTD.Inventors: Seiji Itoo, Ayumi Hamada, Manabu Hidaka, Masahiko Nakagawa
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Publication number: 20210086613Abstract: A drive switching mechanism of a utility vehicle includes: a two-wheel drive and four-wheel drive switching device that switches between two-wheel drive and four-wheel drive of the utility vehicle; and a control unit that controls the drive switching mechanism. The two-wheel drive and four-wheel drive switching device switches between two-wheel drive and four-wheel drive by using a first clutch. The control unit permits the two-wheel drive and four-wheel drive switching device to switch from two-wheel drive to four-wheel drive when a rotation difference of the first clutch becomes equal to or smaller than a predetermined value.Type: ApplicationFiled: December 2, 2020Publication date: March 25, 2021Inventors: Seiji ITOO, Ayumi HAMADA, Manabu HIDAKA, Masahiko NAKAGAWA
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Patent number: 10913459Abstract: A shift switching mechanism of a utility vehicle includes: an input gear connected to an input shaft to which a driving force of an engine is input; a shifter that is connected to a counter shaft transmitting a driving force of the input shaft, and enables engagement between the input gear and a gear connected to the counter shaft; and a control unit that controls the shift switching mechanism. At reception of a shift command, the control unit calculates a rotation difference between the input gear and the shifter, and controls output of the engine to reduce the rotation difference.Type: GrantFiled: November 30, 2018Date of Patent: February 9, 2021Assignee: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Seiji Itoo, Ayumi Hamada, Manabu Hidaka, Masahiko Nakagawa
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Patent number: 10889185Abstract: A drive switching mechanism of a utility vehicle includes: a two-wheel drive and four-wheel drive switching device that switches between two-wheel drive and four-wheel drive of the utility vehicle; and a control unit that controls the drive switching mechanism. The two-wheel drive and four-wheel drive switching device switches between two-wheel drive and four-wheel drive by using a first clutch. The control unit permits the two-wheel drive and four-wheel drive switching device to switch from two-wheel drive to four-wheel drive when a rotation difference of the first clutch becomes equal to or smaller than a predetermined value.Type: GrantFiled: November 30, 2018Date of Patent: January 12, 2021Assignee: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Seiji Itoo, Ayumi Hamada, Manabu Hidaka, Masahiko Nakagawa
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Publication number: 20200172103Abstract: A drive switching mechanism of a utility vehicle includes: a two-wheel drive and four-wheel drive switching device that switches between two-wheel drive and four-wheel drive of the utility vehicle; and a control unit that controls the drive switching mechanism. The two-wheel drive and four-wheel drive switching device switches between two-wheel drive and four-wheel drive by using a first clutch. The control unit permits the two-wheel drive and four-wheel drive switching device to switch from two- wheel drive to four-wheel drive when a rotation difference of the first clutch becomes equal to or smaller than a predetermined value.Type: ApplicationFiled: November 30, 2018Publication date: June 4, 2020Inventors: Seiji ITOO, Ayumi HAMADA, Manabu HIDAKA, Masahiko NAKAGAWA
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Publication number: 20200172107Abstract: A shift switching mechanism of a utility vehicle includes: an input gear connected to an input shaft to which a driving force of an engine is input; a shifter that is connected to a counter shaft transmitting a driving force of the input shaft, and enables engagement between the input gear and a gear connected to the counter shaft; and a control unit that controls the shift switching mechanism. At reception of a shift command, the control unit calculates a rotation difference between the input gear and the shifter, and controls output of the engine to reduce the rotation difference.Type: ApplicationFiled: November 30, 2018Publication date: June 4, 2020Inventors: Seiji ITOO, Ayumi HAMADA, Manabu HIDAKA, Masahiko NAKAGAWA
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Patent number: 10670305Abstract: A refrigeration apparatus has a refrigerant circuit formed by connecting a compressor, a condenser, an expansion valve, and an evaporator by a refrigerant pipe. The refrigeration apparatus includes a temperature duration time measuring unit, and a target evaporation temperature calculating unit. The temperature duration time measuring unit measures a high-temperature duration time in a thermo-off state, the high-temperature duration time being time during which the temperature of the interior of a to-be-cooled space is higher than a lowering threshold which is set with reference to a target interior temperature. The target evaporation temperature calculating unit updates the target evaporation temperature by decreasing the target evaporation temperature by a set subtraction coefficient, after the high-temperature duration time becomes greater than or equal to an update reference time.Type: GrantFiled: April 11, 2016Date of Patent: June 2, 2020Assignee: Mitsubishi Electric CorporationInventors: Ryuichiro Kono, Masahiko Nakagawa
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Publication number: 20190203994Abstract: A refrigerating and air-conditioning system includes a plurality of independent refrigerating and air-conditioning apparatuses each including a refrigerant circuit and a defrosting unit, and further includes a system controller managing the apparatuses in an integrative manner. The system controller includes a defrosting operation control unit. When a time interval between an estimated defrosting start time calculated for a given refrigerating and air-conditioning apparatus and a subsequent estimated defrosting start time calculated for another refrigerating and air-conditioning apparatus is less than or equal to a predetermined target start time interval, the defrosting operation control unit transmits a defrosting start instruction signal to the defrosting unit of the given refrigerating and air-conditioning apparatus.Type: ApplicationFiled: September 2, 2016Publication date: July 4, 2019Inventors: Masahiko NAKAGAWA, Takayoshi IIDA, Kazutaka OGURA
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Publication number: 20190041099Abstract: A refrigeration apparatus has a refrigerant circuit formed by connecting a compressor, a condenser, an expansion valve, and an evaporator by a refrigerant pipe. The refrigeration apparatus includes a temperature duration time measuring unit, and a target evaporation temperature calculating unit. The temperature duration time measuring unit measures a high-temperature duration time in a thermo-off state, the high-temperature duration time being time during which the temperature of the interior of a to-be-cooled space is higher than a lowering threshold which is set with reference to a target interior temperature. The target evaporation temperature calculating unit updates the target evaporation temperature by decreasing the target evaporation temperature by a set subtraction coefficient, after the high-temperature duration time becomes greater than or equal to an update reference time.Type: ApplicationFiled: April 11, 2016Publication date: February 7, 2019Inventors: Ryuichiro KONO, Masahiko NAKAGAWA
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Patent number: 6796030Abstract: To adopt die casts product as parts of a vehicle body frame. A vehicle body frame is provide with an alumite treating, showing that brightness and appearance of pivot plates which are die cast products differ from those of non-die cast products, head pipes, longitudinal pipes and cross pipe. By carrying out a local coating treatment on the pivot plates, the pivot plates are provided with a color the same as that of the pipe, the longitudinal pipes and the cross pipe. By making die cast products portion of constituent parts, the fabrication cost of the vehicle body frame can be reduced.Type: GrantFiled: December 7, 2001Date of Patent: September 28, 2004Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Shinsuke Mochizuki, Masahiko Nakagawa, Eitarou Koya
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Patent number: 6416072Abstract: To adopt die cast products as parts of a vehicle body frame. A vehicle body frame is provided with an alumite treating, showing that brightness and appearance of pivot plates which are die cast products differ from those of non-die cast products, head pipes, longitudinal pipes and cross pipe. By carrying out a local coating treatment on the pivot plates, the pivot plates are provided with a color the same as that of the head pipe, the longitudinal pipes and the cross pipe. By making die cast products portions of constituent parts, the fabrication cost of the vehicle body frame can be reduced.Type: GrantFiled: August 10, 1999Date of Patent: July 9, 2002Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Shinsuke Mochizuki, Masahiko Nakagawa, Eitarou Koya
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Publication number: 20020059728Abstract: To adopt die cast products as parts of a vehicle body frame. A vehicle body frame is provided with an alumite treating, showing that brightness and appearance of pivot plates which are die cast products differ from those of non-die cast products, head pipes, longitudinal pipes and cross pipe. By carrying out a local coating treatment on the pivot plates, the pivot plates are provided with a color the same as that of the head pipe, the longitudinal pipes and the cross pipe. By making die cast products portions of constituent parts, the fabrication cost of the vehicle body frame can be reduced.Type: ApplicationFiled: December 7, 2001Publication date: May 23, 2002Applicant: HONDA GIKEN KOGYO KABUSHIKI KAISHAInventors: Shinsuke Mochizuki, Masahiko Nakagawa, Eitarou Koya
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Patent number: 6352099Abstract: An aluminum alloy die casting method comprising the steps of providing a die casting machine having a gate for allowing passage of molten aluminum alloy, setting a flow rate of the molten aluminum alloy at the gate to be in a range of 5 m/sec to 15 m/sec, and press-injecting the molten aluminum alloy into a cavity of a die. With this arrangement, it becomes possible to obtain a weldable casting with no entrapment of air. An aluminum alloy for a vehicular part, which is formed of a die cast product manufactured by the die casting method of the present invention, is weldable and also dense in structure. As a result, these vehicular parts formed of the die-cast products are manufactured on a large scale at a low cost.Type: GrantFiled: August 4, 1999Date of Patent: March 5, 2002Assignees: Honda Giken Kogyo Kabushiki Kaisha, Kyushu Yanagawa Seiki Co., Ltd.Inventors: Eitarou Koya, Masahiko Nakagawa, Gumpachi Fujimoto, Mitsunori Murakami, Atsushi Kawauchi
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Patent number: 6277217Abstract: An aluminum alloy comprises magnesium in a range of 3.0% by weight≦Mg≦5.5% by weight, manganese in a range of 1.5% by weight≦Mn≦2.0% by weight, nickel in a range of 0.5% by weight≦Ni≦0.9% by weight, and the balance of aluminum including inevitable impurities. Particularly, the Ni content is set in the above range in order to achieve an increase in toughness of a die-cast product. Thus, it is possible to suppress the amount of an intermetallic compound AlMnNi produced and to finely divide the intermetallic compound AlMnNi.Type: GrantFiled: April 13, 1999Date of Patent: August 21, 2001Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Sadafumi Yoshino, Seiichi Koike, Eitarou Koya, Masahiko Nakagawa
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Patent number: 5841226Abstract: A deflection yoke is comprised of a separator for insulating horizontal and vertical deflection coils, the horizontal deflection coils of saddle type are provided within and top and bottom portion of the separator respectively, the separator has ribs for partly separating the top and bottom of horizontal deflection coils at their confronted portions, so that the confronted portions confront directly each other where the ribs are not present, thereby a magnetic field generated by the horizontal deflection coils is collected depending on a location and configuration of the ribs.Type: GrantFiled: January 24, 1997Date of Patent: November 24, 1998Assignee: Victor Company of Japan, Ltd.Inventors: Tsutomu Hichiwa, Masahiko Nakagawa, Masayuki Shimada, Masaaki Itoh
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Patent number: 5838099Abstract: This invention provides an improved deflection yoke of a self-convergence system for deflecting electron beams of a color CRT with in-line electron guns for emitting the electron beams, capable of preventing both a vertical misconvergence of R/B lines and a cross-misconvergence at a low cost. The deflection yoke includes at least a pair of saddle type horizontal deflection coils. Each of the saddle type horizontal coils has two main coil sections divided by a window at a center thereof, a front rim forming a front mouth, a rear rim forming a rear mouth and, at least, a first split-winding section nearby one of the front and rear rims. Further, a second split-winding section is provided in the respective two main coil sections in a rear half of the respective two main coil sections. The second split-winding section is divided into two parts, a first coil part positioned close to the window and a second coil part positioned remote from the window, by a small opening.Type: GrantFiled: February 25, 1997Date of Patent: November 17, 1998Assignee: Victor Company of Japan, Ltd.Inventors: Tsutomu Hichiwa, Masayuki Shimada, Masahiko Nakagawa, Masaaki Itoh
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Patent number: 5813942Abstract: A shift control apparatus for controlling a speed ratio of an automatic transmission of a motor vehicle having an engine during running of the vehicle on a downhill road, on the basis of an actual acceleration value of the vehicle as compared with a reference acceleration value of the vehicle, the apparatus including a device for determining reduction of an actual output of the engine with respect to a desired output of the engine as represented by an operating amount of an accelerator pedal, and a device for reducing the reference acceleration value by a compensating amount which decreases with an increase in the running speed of the vehicle, upon determination of the reduction of the actual output of the engine.Type: GrantFiled: May 1, 1997Date of Patent: September 29, 1998Assignee: Toyota Jidosha Kabushiki KaishaInventors: Masahiko Nakagawa, Atsuo Okumura
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Patent number: 5443595Abstract: A control apparatus for an automatic transmission having a set of frictional engagement elements arranged to be selectively engaged or disengaged in shift-up operation of the transmission, and a shift timing valve arranged to be switched over by hydraulic pilot pressure applied there-to under control of a solenoid valve for switching over discharge of fluid under pressure from one of the frictional engagement elements to be disengaged in the shift-up operation from a slow-drain condition to a quick-drain condition. The control apparatus is designed to detect a drive torque of a vehicle engine, to determine a timing period for energization of the solenoid valve in the shift-up operation in accordance with the drive torque of the vehicle engine, to maintain the solenoid valve in its deenergized condition during the timing period, and to energize the solenoid valve upon lapse of the timing period.Type: GrantFiled: July 23, 1993Date of Patent: August 22, 1995Assignee: Aisin Seiki Kabishuki KaishaInventors: Masato Shimei, Shigeki Goto, Takahiro Sakai, Masahiko Nakagawa
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Patent number: D380290Type: GrantFiled: November 16, 1995Date of Patent: July 1, 1997Assignee: Japan Health Supply, Inc.Inventor: Masahiko Nakagawa
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Patent number: D384797Type: GrantFiled: May 17, 1996Date of Patent: October 14, 1997Assignee: Japan Health Supply, Inc.Inventor: Masahiko Nakagawa