Patents by Inventor Masatoshi Ito
Masatoshi Ito 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: 20110270483Abstract: A control device for a vehicle hydraulic control circuit having a hydraulic switch disposed on a hydraulic control circuit of an automatic transmission, includes: a malfunction detecting portion configured to detect a malfunction of the hydraulic switch; and a malfunction removing portion configured to execute an operation for restoring a contact of the hydraulic switch when a malfunction of the hydraulic switch is detected.Type: ApplicationFiled: January 9, 2009Publication date: November 3, 2011Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hiroatsu Endo, Masatoshi Ito
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Patent number: 7846060Abstract: When an engine is in operation an ignition switch is turned off by a driver an ECU executes a program including the step of actuating an electric motor driven oil pump.Type: GrantFiled: November 28, 2006Date of Patent: December 7, 2010Assignee: Toyota Jidosha Kabushiki KaishaInventors: Takeshi Kanayama, Masatoshi Ito, Koji Hayashi, Koki Ueno, Tsuyoshi Mikami
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Patent number: 7828692Abstract: A control device causes a motor-generator to stop while a shift lever is set to a neutral position, and changes the rotation speed of an electric oil pump from a first rotation speed to a second rotation speed lower than the first rotation speed if a state of the electric oil pump in a hydraulic pressure control device enters a state where it is not preferable to continue operation at the first rotation speed. Preferably, the control device warns a driver to change the shift lever position from the neutral-position to another position if the vehicle satisfies a prescribed warning condition. Further preferably, the control device sets the vehicle to a running non-permitted state if the shift lever position is not changed from the neutral position to another position after warning.Type: GrantFiled: December 5, 2006Date of Patent: November 9, 2010Assignee: Toyota Jidosha Kabushiki KaishaInventors: Koji Hayashi, Masatoshi Ito, Koki Ueno, Takeshi Kanayama, Tsuyoshi Mikami
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Publication number: 20100263951Abstract: Due to the reduction of a discharge amount of a mechanical oil pump by a lowering of the idling rotation speed, a slip in a hydraulic power transmission apparatus and a blow up of an electric motor for running due to a delay of the rising of the oil pressure upon the sudden start and the like are prevented. While avoiding the slip and the blow up, the idling rotation speed is lowered so as to make the engine noise small. When the return determination from the idling state is performed based on the shift operation from P to D, at step S5, a torque TMG2 of a second motor/generator MG2 is temporarily restricted. As a result, upon the sudden start from the idling state, even when the rising of the oil pressure delays, the second brake B2 engaged upon the starting is prevented from slipping, and the second motor/generator MG2 is prevented from blowing up.Type: ApplicationFiled: April 11, 2008Publication date: October 21, 2010Inventors: Koji Hayashi, Masatoshi Ito, Takeshi Kanayama, Tsuyoshi Mikami
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Patent number: 7713163Abstract: A control system for hybrid vehicles, in which a second prime mover is connected to an output member to which a power is transmitted from a first prime mover through a transmission in which a torque capacity is varied in accordance with an oil pressure, and which has a first hydraulic pump driven by the first prime mover for establishing an oil pressure to be fed to the transmission, and a second hydraulic pump arranged in parallel with the first hydraulic pump and driven by an electric motor. A torque limiter limits an output torque of the second prime mover temporarily to a predetermined torque which is lower than a maximum output torque, at a starting time of the first prime mover.Type: GrantFiled: January 18, 2005Date of Patent: May 11, 2010Assignee: Toyota Jidosha Kabushiki KaishaInventors: Koji Hayashi, Masatoshi Ito, Hiroatsu Endo, Tatsuya Ozeki
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Patent number: 7692408Abstract: A charging device for use in charging plural types of secondary batteries includes a power source unit for supplying a charging current to an object secondary battery, a battery type signal receiving unit for receiving a battery type signal, a battery temperature signal receiving unit for receiving a battery temperature signal, a blowing unit for blowing an air to the secondary battery, a storage unit for storing reference judging temperatures for determination of charging-incongruent temperatures of the plural types of secondary batteries, in a matching relationship with the types of the secondary batteries, and a control unit. The control unit allows the blowing unit to perform a blowing operation, if the temperature of the secondary battery exceeds a reference judging temperature, and to stop the blowing operation, if otherwise.Type: GrantFiled: March 28, 2006Date of Patent: April 6, 2010Assignee: Panasonic Electric Works Co., Ltd.Inventors: Hiroshi Miyazaki, Toshiharu Ohashi, Masatoshi Ito
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Patent number: 7666115Abstract: A control system for a hybrid vehicle, in which an engine is connected to a first motor generator and to an output shaft through a power distributing mechanism (12), in which a second motor generator is connected to the output shaft through a transmission (6) wherein a torque capacity is varied in accordance with an oil pressure, and which has an electric oil pump (OPM) for generating an oil pressure, comprising: an oil pressure judging means for judging whether or not the oil pressure established by operating OPM is raised higher than a preset value; an electric oil pump output lowering device for lowering an output of OPM in case the oil pressure judging device judges that the oil pressure is raised higher than the preset value; and a cranking device for carrying out a cranking of E/G by the first motor generator.Type: GrantFiled: January 26, 2007Date of Patent: February 23, 2010Assignee: Toyota Jidosha Kabushiki KaishaInventors: Masatoshi Ito, Tatsuya Ozeki
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Patent number: 7612525Abstract: An electrical apparatus includes an electrical apparatus main body and a battery pack. The electrical apparatus main body has a load, a manipulation switch, a power receiving electrode, a main body control unit for controlling the electric power supplied from the power receiving electrode in response to a manipulation of the manipulation switch, a signal generation unit for generating an on-manipulation signal if the manipulation switch is switched on, and a main body signal electrode for outputting the on-manipulation signal. The battery pack has a battery, a power supplying electrode, a battery control unit for controlling the electric power supplied from the battery to the power supplying electrode, a battery signal electrode for receiving the on-manipulation signal, and a power supplying unit for starting a power supply from the battery to the battery control unit when the battery signal electrode receives the on-manipulation signal.Type: GrantFiled: March 27, 2006Date of Patent: November 3, 2009Assignee: Matsushita Electric Works, Ltd.Inventors: Masatoshi Ito, Hiroshi Miyazaki, Toshiharu Ohashi, Akira Kawai
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Publication number: 20090227409Abstract: During downshifting, a control for restricting an output of an engine to constantly maintain electric power balance between a first electric motor and a second electric motor or a control for suppressing a rate of increase in engine rotational speed by a control on the engine, such as ignition timing retardation control or fuel injection amount reduction control, is executed to thereby allow torque of the second electric motor to be reduced during downshifting. In addition, the engine rotational speed is decreased before downshifting, and, after the engine rotational speed is decreased to a rotational speed at which a protection control is not activated, an automatic transmission downshifts. With the above control, it is possible to suppress an increase in rotational speed of the second electric motor during downshifting. Thus, shift shock may be suppressed, and the friction material of the frictional engagement element may be protected.Type: ApplicationFiled: February 23, 2009Publication date: September 10, 2009Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Masatoshi ITO, Taiyo Uejima
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Publication number: 20090110340Abstract: A pinion shaft is supported in a housing by two tapered roller bearings which are arranged separately from each other in an axial direction, and these two tapered roller bearings are lubricated with lubricating oil in the housing in oil bath lubrication method. A labyrinth forming member in a disc-like shape is disposed with respect to a backward tapered roller bearing out of the two tapered roller bearings, on an end face at a small diameter side of an inner ring thereof in a press-contact manner, so as to be opposed to a rib part which is formed inwardly in a radial direction at a small diameter end of a cage. In this manner, a labyrinth structure for restricting a flow of the lubricating oil is formed between the rib part at the small diameter end side of the cage and the labyrinth forming member.Type: ApplicationFiled: October 30, 2008Publication date: April 30, 2009Applicant: JTEKT CorporationInventor: Masatoshi Ito
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Publication number: 20080139360Abstract: A control system for hybrid vehicles, in which a second prime mover is connected to an output member to which a power is transmitted from a first prime mover through a transmission in which a torque capacity is varied in accordance with an oil pressure, and which has a first hydraulic pump driven by the first prime mover for establishing an oil pressure to be fed to the transmission, and a second hydraulic pump arranged in parallel with the first hydraulic pump and driven by an electric motor. A torque limiter limits an output torque of the second prime mover temporarily to a predetermined torque which is lower than a maximum output torque, at a starting time of the first prime mover.Type: ApplicationFiled: January 18, 2005Publication date: June 12, 2008Applicant: TOYOTA JIBOSHA KABUSHIKI KAISHAInventors: Koji Hayashi, Masatoshi Ito, Hiroatsu Endo, Tatsuya Ozeki
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Publication number: 20080077297Abstract: A control apparatus for a vehicle having an engine and an automatic transmission includes a rotational speed detection unit that detects the engine speed; a temperature detection unit that detects the temperature of automatic transmission fluid; an calculation unit that calculates a degree of agitation of the automatic transmission fluid based on the detected engine speed and the automatic transmission fluid temperature; an adding unit for adding the calculated degree of agitation to a previously calculated degree of agitation; and a control unit for controlling the automatic transmission based on the sum degree to prevent increasing the degree of agitation.Type: ApplicationFiled: September 14, 2007Publication date: March 27, 2008Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Masatoshi ITO, Tsuyoshi Mikami
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Patent number: 7314425Abstract: A control system for a hybrid vehicle, in which an engine is connected to a first motor generator and to an output shaft through a power distributing mechanism (12), in which a second motor generator is connected to the output shaft through a transmission (6) wherein a torque capacity is varied in accordance with an oil pressure, and which has an electric oil pump (OPM) for generating an oil pressure, comprising: an oil pressure judging means for judging whether or not the oil pressure established by operating OPM is raised higher than a preset value; an electric oil pump output lowering device for lowering an output of OPM in case the oil pressure judging device judges that the oil pressure is raised higher than the preset value; and a cranking device for carrying out a cranking of E/G by the first motor generator.Type: GrantFiled: December 29, 2004Date of Patent: January 1, 2008Assignee: Toyota Jidosha Kabushiki KaishaInventors: Masatoshi Ito, Tatsuya Ozeki
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Publication number: 20070173370Abstract: When an engine is in operation an ignition switch is turned off by a driver an ECU executes a program including the step of actuating an electric motor driven oil pump.Type: ApplicationFiled: November 28, 2006Publication date: July 26, 2007Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Takeshi Kanayama, Masatoshi Ito, Koji Hayashi, Koki Ueno, Tsuyoshi Mikami
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Publication number: 20070173371Abstract: A control device causes a motor-generator to stop while a shift lever is set to a neutral position, and changes the rotation speed of an electric oil pump from a first rotation speed to a second rotation speed lower than the first rotation speed if a state of the electric oil pump in a hydraulic pressure control device enters a state where it is not preferable to continue operation at the first rotation speed. Preferably, the control device warns a driver to change the shift lever position from the neutral-position to another position if the vehicle satisfies a prescribed warning condition. Further preferably, the control device sets the vehicle to a running non-permitted state if the shift lever position is not changed from the neutral position to another position after warning.Type: ApplicationFiled: December 5, 2006Publication date: July 26, 2007Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Koji Hayashi, Masatoshi Ito, Koki Ueno, Takeshi Kanayama, Tsuyoshi Mikami
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Patent number: 7239318Abstract: A method and computer software product for processing outline fonts is described to skeletonize character fonts based on their outline data. The method may comprise: reading font data from an outline font dictionary that stores the outline data of an outline font, preparing element structures and constructing a graphic path; determining whether or not the element structures constitute another graphic path; determining whether or not, within the graphic path, there is another graphic path that is completely contained and has the same cyclic direction as the graphic path, if there is, then, deleting the other graphic path; and moving the element structures that constitute the graphic path by a predetermined distance to the direction of character width based on the character width of the outline font, thereby to output a plurality of line segments which effectively eliminates the character width of the outline font.Type: GrantFiled: December 5, 2001Date of Patent: July 3, 2007Assignee: Rise KabushikikaishaInventors: Masatoshi Ito, Shunsuke Futakuchi
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Publication number: 20070119640Abstract: A control system for a hybrid vehicle, in which an engine is connected to a first motor generator and to an output shaft through a power distributing mechanism (12), in which a second motor generator is connected to the output shaft through a transmission (6) wherein a torque capacity is varied in accordance with an oil pressure, and which has an electric oil pump (OPM) for generating an oil pressure, comprising: an oil pressure judging means for judging whether or not the oil pressure established by operating OPM is raised higher than a preset value; an electric oil pump output lowering device for lowering an output of OPM in case the oil pressure judging device judges that the oil pressure is raised higher than the preset value; and a cranking device for carrying out a cranking of E/G by the first motor generator.Type: ApplicationFiled: January 26, 2007Publication date: May 31, 2007Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Masatoshi Ito, Tatsuya Ozeki
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Publication number: 20070108945Abstract: When charging of a secondary battery is started, a power source section for supplying an electric current for charging the secondary battery gradually increases the supply amount of the current. If the charging current has reached a predetermined first threshold current, the power source section is operative to set the supply amount of the current to a predetermined constant current for a constant current charging. If a terminal voltage of the secondary battery has reached a predetermined threshold voltage, the power source section is operative to supply a predetermined voltage for a constant voltage charging to the secondary battery.Type: ApplicationFiled: November 14, 2006Publication date: May 17, 2007Applicant: MATSUSHITA ELECTRIC WORKS, LTD.Inventors: Toshiharu OHASHI, Masaaki SAKAUE, Masatoshi ITO
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Patent number: 7207404Abstract: A hybrid vehicle drive system including (a) an engine, (b) an electric motor, (c) a planetary gear device having a first rotary element connected to the engine, a second rotary element connected to the electric motor and connected through a first clutch to an output member connected to vehicle drive wheel, and a third rotary element connected through a second clutch to the output member, (d) a forward-motor-drive control device for engaging the first clutch and releasing the second clutch to thereby establish a forward motor drive mode in which the vehicle is driven in a forward direction by the electric motor, (e) a forward-engine-drive control device for engaging at least the second clutch to establish an engine-drive mode in which the vehicle is driven in the forward direction by the engine, and (f) a second-clutch control device operable upon switching of a vehicle drive mode from the forward motor drive mode to the forward engine drive mode, for engaging the second clutch only after the engine speed hasType: GrantFiled: October 25, 2004Date of Patent: April 24, 2007Assignee: Toyota Jidosha Kabushiki KaishaInventors: Masatoshi Ito, Hidehiro Oba, Hiroatsu Endo, Kazumi Hoshiya
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Patent number: 7206671Abstract: Provided is a mounting apparatus which enables high levels of both maintenance/improvement of product quality and reduction of product cost by reliably preventing accidental contact of a mounting part with a mounting target part while enhancing the productivity.Type: GrantFiled: August 18, 2003Date of Patent: April 17, 2007Assignee: TDK CorporationInventors: Toru Mizuno, Masatoshi Ito, Masaaki Kaneko, Hiroshi Ikeda