Patents by Inventor Tomoaki Ishikawa
Tomoaki Ishikawa 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: 20090088978Abstract: Systems, methods, and programs capture an image of a periphery of a vehicle. The systems, methods, and programs, store predetermined patterns representing conditions of road markings formed on a road surface, detect a road marking on the basis of the captured image, and compare the detected road marking to the predetermined patterns. If the detected road marking matches one of the predetermined patterns, the systems, methods, and programs execute a predetermined action associated with the matching predetermined pattern.Type: ApplicationFiled: August 4, 2006Publication date: April 2, 2009Applicants: Aisin AW Co., LTD., Toyota Jidosha Kabushiki KaishaInventors: Tomoaki Ishikawa, Masaki Nakamura, Osamu Aisaka, Motoki Kanba, Motohiro Nakamura
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Publication number: 20090005980Abstract: Vehicle-position-recognition apparatuses, methods, and programs acquire current position information indicating a current position of a vehicle and acquire road information indicating at least one road based on a connection relationship between plural links. The apparatuses, methods, and programs determine a link where the vehicle travels based on the current position information and the road information and generate travel-history information indicating a route that the vehicle travels at a point where a link is branched based on the determined link. The apparatuses, methods, and programs acquire an image of an area surrounding the vehicle, recognize a recognition target in the acquired image, and store the generated travel-history information in the memory in association with information indicating the recognition of the recognition target.Type: ApplicationFiled: June 13, 2008Publication date: January 1, 2009Applicant: AISIN AW CO., LTD.Inventors: Koichi Nakao, Masaki Nakamura, Tomoaki Ishikawa, Motoki Kanba, Osamu Aisaka
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Publication number: 20090005929Abstract: Vehicle behavior learning apparatuses, methods, and programs acquire image information of an area around a vehicle and perform image recognition of a particular feature included in the image information. The apparatuses, methods, and programs detect a behavior of the vehicle and acquire relation information indicating the relationship between the detected behavior of the and the recognized particular feature before the recognition of the behavior. The apparatuses, methods, and programs store detected behavior information including behavior property information indicating a property of the detected behavior of the vehicle and the acquired relation information associated with the behavior in a memory and produce learned behavior information indicating a result of learning of the behavior related to the particular feature on the basis of the stored detected behavior information.Type: ApplicationFiled: June 13, 2008Publication date: January 1, 2009Applicant: AISIN AW CO., LTD.Inventors: Koichi Nakao, Masaki Nakamura, Tomoaki Ishikawa, Motoki Kanba, Osamu Aisaka
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Publication number: 20090005979Abstract: A vehicle location recognition apparatus includes a link determination unit which accurately determines a link traveled by a vehicle from among a plurality of links meeting at a narrow-angle branch point, on the basis of vehicle location information and road information, travel history information representing a route traveled by the vehicle at the branch point. The vehicle location recognition apparatus includes a history information generation unit for generating travel history information for the determined link. The travel history information is stored in a learning database. On the basis of the travel history information, a learning unit generates learned priority information representing the priorities of the respective links meeting at a branch point and used in the determination by the link determination unit.Type: ApplicationFiled: June 13, 2008Publication date: January 1, 2009Applicant: AISIN AW CO., LTD.Inventors: Koichi Nakao, Masaki Nakamura, Tomoaki Ishikawa, Motoki Kanba, Osamu Aisaka
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Publication number: 20080243312Abstract: Vehicle behavior learning apparatuses, methods, and programs store pieces of feature information including position information and attribute information of a plurality of target features. The apparatuses, methods, and programs obtain vehicle position information that shows a current position of a vehicle, obtaining image information of surroundings of the vehicle, and obtain one of the stored pieces of feature information corresponding to the surroundings of the vehicle based on the vehicle position information. The apparatuses, methods, and programs perform an image recognition for recognizing a target feature contained in the image information that corresponds to the obtained piece of feature information, detect a behavior of the vehicle that is performed within a predetermined range from a position of the recognized target feature, and store, based on the vehicle position information, the detected behavior in correspondence with information of a position in which the detected behavior was detected.Type: ApplicationFiled: March 13, 2008Publication date: October 2, 2008Applicant: AISIN AW CO., LTD.Inventors: Masaki Nakamura, Koichi Nakao, Tomoaki Ishikawa, Motoki Kanba, Osamu Aisaka
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Patent number: 7073648Abstract: A power transmission mechanism for transmitting a driving force from a drive shaft to a driven member of a gear via a one-way clutch is provided. The one-way clutch includes a swinging clutch portion swingably fitted in a clutch portion housing groove formed in a first end portion of the drive shaft. The swinging clutch portion has a cylindrical portion as the axis of rotation and a projecting portion. When the drive shaft rotates, the projecting portion of the swinging clutch portion is raised by a slit of a collar fitted onto the drive shaft, engaging one of a plurality of engaging grooves formed in the inner peripheral surface of the driven member. When the drive shaft does not rotate, the swinging clutch portion lies down, and the projecting portion does not engage any engaging groove, allowing the driven member to rotate bidirectionally relative to the drive shaft.Type: GrantFiled: September 24, 2004Date of Patent: July 11, 2006Assignee: Honda Motor Co., Ltd.Inventors: Tomoaki Ishikawa, Kazuyoshi Miyahara
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Patent number: 7074148Abstract: A hydraulic controller of a power transmission device is equipped with a transmission for changing a rotation speed of motor power input from a motor and outputting the motor power; a forward/backward change-over mechanism provided between an input shaft, where the motor power of the motor is input and the transmission; and a torque converter having a direct coupling mechanism for transmitting the motor power between an output shaft and the input shaft of the motor; a solenoid valve for adjusting an original pressure and generating a control pressure; and a change-over element for changing over a hydraulic pressure supplied to the forward/backward change-over mechanism so as to become a low pressure during deceleration driving when the direct coupling mechanism is controlled by the solenoid valve, wherein any one of engagement states of the forward/backward change-over mechanism and the direct coupling mechanism is controlled by the control pressure.Type: GrantFiled: August 9, 2004Date of Patent: July 11, 2006Assignee: Honda Motor Co., Ltd.Inventors: Tomoaki Ishikawa, Shigeji Nakano, Kazunori Fujishima, Masaaki Yamaguchi, Tsuyoshi Fujita, Takao Ueno
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Publication number: 20050137790Abstract: An information distribution center includes a controller that searches for a route from a departure place to a destination place as a search route and searches for access points on the search route. The controller selects, based on distribution information, a first access point that can communicate with a mobile terminal apparatus when a vehicle is turned on and that corresponds to a first portion of the distribution information and selects, based on distribution information, a second access point along the search route that corresponds to a second portion of distribution information. The controller then transmits the first portion of the distribution information to the first access point and transmits the second portion of the distribution information to the second access point.Type: ApplicationFiled: August 30, 2004Publication date: June 23, 2005Applicant: AISIN AW CO., LTD.Inventors: Kunihiro Yamada, Tomoaki Ishikawa
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Publication number: 20050087418Abstract: A power transmission mechanism for transmitting a driving force from a drive shaft to a driven member of a gear via a one-way clutch is provided. The one-way clutch includes a swinging clutch portion swingably fitted in a clutch portion housing groove formed in a first end portion of the drive shaft. The swinging clutch portion has a cylindrical portion as the axis of rotation and a projecting portion. When the drive shaft rotates, the projecting portion of the swinging clutch portion is raised by a slit of a collar fitted onto the drive shaft, engaging one of a plurality of engaging grooves formed in the inner peripheral surface of the driven member. When the drive shaft does not rotate, the swinging clutch portion lies down, and the projecting portion does not engage any engaging groove, allowing the driven member to rotate bidirectionally relative to the drive shaft.Type: ApplicationFiled: September 24, 2004Publication date: April 28, 2005Inventors: Tomoaki Ishikawa, Kazuyoshi Miyahara
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Publication number: 20050085340Abstract: A hydraulic controller of a power transmission device is equipped with a transmission for changing a rotation speed of motor power input from a motor and outputting the motor power; a forward/backward change-over mechanism provided between an input shaft, where the motor power of the motor is input and the transmission; and a torque converter having a direct coupling mechanism for transmitting the motor power between an output shaft and the input shaft of the motor; a solenoid valve for adjusting an original pressure and generating a control pressure; and a change-over element for changing over a hydraulic pressure supplied to the forward/backward change-over mechanism so as to become a low pressure during deceleration driving when the direct coupling mechanism is controlled by the solenoid valve, wherein any one of engagement states of the forward/backward change-over mechanism and the direct coupling mechanism is controlled by the control pressure.Type: ApplicationFiled: August 9, 2004Publication date: April 21, 2005Inventors: Tomoaki Ishikawa, Shigeji Nakano, Kazunori Fujishima, Masaaki Yamaguchi, Tsuyoshi Fujita, Takao Ueno
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Patent number: 6848523Abstract: A walk-behind working machine has a drive source, wheels rotationally driven by the drive source, and a traveling clutch for transmitting driving power from the drive source to the wheels. A driving member is disposed in the case and has a first friction surface. A driven member is mounted in the case for undergoing rotation relative to the driving member and has a second friction surface positioned to be brought into surface contact with the first friction surface at a preselected surface pressure.Type: GrantFiled: April 16, 2002Date of Patent: February 1, 2005Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Tomoaki Ishikawa, Kazuyoshi Miyahara, Susumu Ohkubo, Hiromitsu Sasaki
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Patent number: 6796392Abstract: A working machine has an operation switching lever mounted on a handle in the vicinity of a handle grip and is arranged to be manipulated by one of the hands of the operator to transmit or interrupt a driving force outputted from the drive source to the working tool. A drive switching lever is mounted on the handle and is arranged to be manipulated by one of the hands of the operator to operate a continuously variable transmission to switch driving wheels from a halt condition to a high-speed advancement condition. A disc is mounted on the handle for undergoing rotational movement relative to the drive switching lever. A control member positions the disc at a preselected angular position relative to the drive switching lever to regulate an amount of pivotal movement of the drive switching lever for adjusting a rotational speed of the driving wheels.Type: GrantFiled: April 16, 2002Date of Patent: September 28, 2004Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Takao Kobayashi, Tetsuo Iida, Hiromitsu Sasaki, Tomoaki Ishikawa
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Patent number: 6769501Abstract: A walk behind working machine has a frame having a forward end portion and a rear end portion, a prime mover mounted on the frame, a pair of drive wheels mounted on the frame for undergoing rotation, and a power transmission mechanism for transmitting rotational power from the prime mover to the drive wheels. A running clutch is adapted to be placed in an engaged state in which rotational power is transmitted to the drive wheels and in a disengaged state in which rotational power is not transmitted to the drive wheels. A pair of operating handles extend from the rear end portion of the frame. A single grip/clutch lever serves as a grip handle for being gripped by an operator to maneuver the working machine and as a clutch lever manually operable to selectively place the running clutch in the engaged state and the disengaged state.Type: GrantFiled: December 20, 2001Date of Patent: August 3, 2004Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Tetsuo Iida, Tomoaki Ishikawa
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Patent number: 6539649Abstract: A power transmission system for use in a snow-removing machine has a drive shaft having a first end for supporting a snow blower having a forward end and a rearward end. The drive shaft has second end disposed opposite the first end and for extension from the forward end of the snow blower. An auger transmission is connected to the second end of the drive shaft and has an auger shaft for undergoing rotation in accordance with rotation of the drive shaft. An auger is mounted on the auger shaft for rotation therewith. An overload protecting mechanism is disposed between the snow blower and the auger transmission for preventing application of a power overload between the drive shaft and the auger.Type: GrantFiled: February 27, 2001Date of Patent: April 1, 2003Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Hiroshi Sueshige, Takahiro Yamamoto, Hiroshi Kobayashi, Seishu Sakai, Tomoaki Ishikawa
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Patent number: 6523283Abstract: An overload protecting device assembled in an auger transmission is disclosed as including a worm wheel having its side wall formed with a plurality of wheel-side protruding segments, a boss member engaging with the wheel and fixedly coupled to an auger shaft for non-rotating relationship, and a slide washer having a plurality of wheel-side projections facing the wheel-side protruding segments. When the auger shaft encounters a torque exceeding a given value, the worm wheel and the boss member are enabled to rotate relative to one another. As the wheel-side projections ride on the protruding segments, the slide washer is moved in a direction opposed to the worm wheel. A washer detection switch detects such a movement to produce a detection signal to forcibly stop the operation of an engine.Type: GrantFiled: July 27, 2001Date of Patent: February 25, 2003Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Hiroshi Sueshige, Kenji Kuroiwa, Tomoaki Ishikawa
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Publication number: 20030006074Abstract: A walk-behind working machine includes an engine, a pair of rear wheels, and a traveling clutch interposed between the engine and the rear wheels. The clutch includes a case containing lubricating oil, a driving member having a female portion, and a driven member having a male portion. The driving and driven members are submerged in the oil. The clutch provides a characteristic curve shown in a coordinate system where a vertical axis of the system shows a coefficient of friction between the female and male portions and a horizontal axis of the system shows a parameter obtained by multiplying a viscosity of the oil by the number of times the male portion rotates relative to the female portion per second, and then dividing the resulting product by a surface pressure between the female and male portions. The characteristic curve includes first and second straight lines. The first and second straight lines meet each other at a bent point.Type: ApplicationFiled: April 16, 2002Publication date: January 9, 2003Inventors: Tomoaki Ishikawa, Kazuyoshi Miyahara, Susumu Ohkubo, Hiromitsu Sasaki
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Publication number: 20030006073Abstract: A walk behind working machine includes a grip/clutch lever which allows a running clutch to be used in its slipping phase. The grip/clutch lever is mounted on handles swingably between a forward position and a rearward position and connected to the running clutch via a clutch cable. When the grip/clutch lever is shifted to the rearward position, the running clutch is disconnected. When the grip/clutch lever is shifted to the forward position, the running clutch is connected. In the course of shift of the grip/clutch lever from the rearward position to the forward position, the running clutch is brought into the slipping phase, thereby enabling the walking machine to start running at a low speed.Type: ApplicationFiled: December 20, 2001Publication date: January 9, 2003Inventors: Tetsuo Iida, Tomoaki Ishikawa
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Patent number: 6488101Abstract: A tiller for cultivating soil has a power source and a tilling shaft mounted for undergoing rotation by a driving force supplied from the power source. The tilling shaft has a hollow outer shaft and an inner shaft extending through the outer shaft. The inner shaft has a variable rotating speed and/or direction of rotation relative to the outer shaft. A power transmission mechanism transmits a driving force from the power source to the tilling shaft. The power transmission mechanism has a first power transmission system for transmitting the driving force from the power source to the outer shaft and a second power transmission system transmitting the driving force from the power source to the inner shaft. The second power transmission system has a hydrostatic transmission comprised of a hydraulic pump and a hydraulic motor for effecting a stepless change of the rotating speed of the inner shaft as well as a selective change of its direction of rotation.Type: GrantFiled: August 30, 2000Date of Patent: December 3, 2002Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Kazuyoshi Miyahara, Hideaki Kobayashi, Masatoshi Nagaoka, Masashi Takeuchi, Tomoaki Ishikawa
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Patent number: 6470766Abstract: A power transmission system for a working machine, wherein drive power is transmitted from an engine to a work-tool holding drive shaft via a reduction mechanism is provided. The reduction mechanism includes an input shaft having a first gear, and an output shaft having a second gear. The second gear has a gear portion and a cylindrical boss segment press fitted thereto, forming a torque limiter. As a result, the reduction mechanism, which has the torque limiter, has a simplified structure, enabling easy assemblage.Type: GrantFiled: January 9, 2001Date of Patent: October 29, 2002Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Yoshitaka Ohta, Tomoaki Ishikawa
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Publication number: 20020153179Abstract: A walk-behind, self-propelled working machine having a handle extending in a rearward and upward direction from a rear end of a body, an operation switching lever, and a drive switching lever. A speed adjusting rotary control for adjusting the driving speed of the working machine is provided in the vicinity of the drive switching lever with one end rotatably mounted to the side of the handle, being positioned near at hand for an operator. Even when the working machine is propelled, the speed adjusting rotary control can be operated with one hand while the drive switching lever is gripped with the handle with the other hand, thereby adjusting the driving speed of the working machine.Type: ApplicationFiled: April 16, 2002Publication date: October 24, 2002Inventors: Takao Kobayashi, Tetsuo Iida, Hiromitsu Sasaki, Tomoaki Ishikawa