Patents by Inventor Atsufumi Ozaki
Atsufumi Ozaki 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: 8751158Abstract: A personal watercraft includes a handle having a pair of right and left grip portions, and a handle pad configured to cover a region of the handle, the region being located between the pair of grip portions. The handle pad is provided on a surface thereof with an accommodating concave portion configured to accommodate therein a portable information device.Type: GrantFiled: November 26, 2008Date of Patent: June 10, 2014Assignee: Kawasaki Jukogyo Kabushiki KaishaInventors: Kunihiko Kamio, Minoru Kanamori, Atsufumi Ozaki
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Patent number: 8335633Abstract: A driving control system includes a controller which is configured to, in response to a command for starting an auto-cruise mode generated by the operation of an input device, control an engine speed or a vehicle speed so that a value detected by a speed detector falls within a cruising speed range, when the value detected by the speed detector is outside the cruising speed range; and to then cause the watercraft to cruise at a constant engine speed or at a constant vehicle speed.Type: GrantFiled: September 26, 2008Date of Patent: December 18, 2012Assignee: Kawasaki Jukogyo Kabushiki KaishaInventors: Toshio Araki, Atsufumi Ozaki, Satoru Watabe
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Patent number: 8172629Abstract: A personal watercraft comprises an oil cooler including an oil cooling passage through which oil circulating inside an engine flows and a coolant passage through which coolant for cooling the oil in the oil cooling passage flows; a first oil passage through which the oil flowing toward the oil cooling passage flows; a second oil passage through which the oil flowing out from the oil cooling passage flows; a bypass passage connecting the first oil passage to the second oil passage so as to bypass the oil cooling passage; and a valve configured to open and close the bypass passage; wherein the valve opens the bypass passage when the temperature of the oil is lower than a predetermined value and closes the bypass passage when the temperature of the oil is not lower than the predetermined value.Type: GrantFiled: December 30, 2009Date of Patent: May 8, 2012Assignee: Kawasaki Jukogyo Kabushiki KaishaInventor: Atsufumi Ozaki
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Patent number: 7980906Abstract: A personal watercraft comprises an engine which is mounted in a body of the watercraft and is equipped with an open-loop water cooling system; a coolant passage in which water for cooling the engine flows; a water flow generator configured to operate in association with the engine to generate a water flow in the coolant passage; and a valve unit configured to restrict a flow of the water in the coolant passage.Type: GrantFiled: December 29, 2008Date of Patent: July 19, 2011Assignee: Kawasaki Jukogyo Kabushiki KaishaInventors: Atsufumi Ozaki, Yasuo Okada, Akio Miguchi, Hiroshi Yagii, Toshio Araki
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Publication number: 20110159753Abstract: A personal watercraft comprises an oil cooler including an oil cooling passage through which oil circulating inside an engine flows and a coolant passage through which coolant for cooling the oil in the oil cooling passage flows; a first oil passage through which the oil flowing toward the oil cooling passage flows; a second oil passage through which the oil flowing out from the oil cooling passage flows; a bypass passage connecting the first oil passage to the second oil passage so as to bypass the oil cooling passage; and a valve configured to open and close the bypass passage; wherein the valve opens the bypass passage when the temperature of the oil is lower than a predetermined value and closes the bypass passage when the temperature of the oil is not lower than the predetermined value.Type: ApplicationFiled: December 30, 2009Publication date: June 30, 2011Applicant: Kawasaki Jukogyo Kabushiki KaishaInventor: Atsufumi Ozaki
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Patent number: 7832383Abstract: An engine for a personal watercraft that is equipped with a supercharging machine, including a pressure release device that is configured to, when a pressure in a region of an air-intake passage of the engine that is located upstream of a throttle valve in an intake-air flow direction exceeds a predetermined value, release the pressure outside the air-intake passage.Type: GrantFiled: March 15, 2007Date of Patent: November 16, 2010Assignee: Kawasaki Jukogyo Kabushiki KaishaInventors: Atsufumi Ozaki, Keiji Takahashi
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Publication number: 20100167607Abstract: A personal watercraft comprises an engine which is mounted in a body of the watercraft and is equipped with an open-loop water cooling system; a coolant passage in which water for cooling the engine flows; a water flow generator configured to operate in association with the engine to generate a water flow in the coolant passage; and a valve unit configured to restrict a flow of the water in the coolant passage.Type: ApplicationFiled: December 29, 2008Publication date: July 1, 2010Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Atsufumi Ozaki, Yasuo Okada, Akio Miguchi, Hiroshi Yagii, Toshio Araki
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Patent number: 7744433Abstract: A jet-propulsion personal watercraft includes an engine configured to generate a driving power for generating a propulsion force to propel the watercraft, an engine speed changing system configured to be able to change an engine speed of the engine, a determiner configured to determine whether or not to execute control for effectively steering the watercraft at start of deceleration, and an engine controller configured to control the engine speed changing system based on information received from the determiner. The engine controller is configured to, when the determiner determines that the control for effectively steering the watercraft should not be executed, control the engine speed changing system so that a decrease rate of the engine speed immediately after the determination is smaller than a decrease rate of the engine speed in a case where the determiner determines that the control for effectively steering the watercraft should not be executed.Type: GrantFiled: May 8, 2008Date of Patent: June 29, 2010Assignee: Kawasaki Jukogyo Kabushiki KaishaInventors: Atsufumi Ozaki, Satoru Watabe
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Publication number: 20100131131Abstract: A personal watercraft includes a handle having a pair of right and left grip portions, and a handle pad configured to cover a region of the handle, the region being located between the pair of grip portions. The handle pad is provided on a surface thereof with an accommodating concave portion configured to accommodate therein a portable information device.Type: ApplicationFiled: November 26, 2008Publication date: May 27, 2010Applicant: Kawasaki Jukogyo Kabushiki KaishaInventors: Kunihiko Kamio, Minoru Kanamori, Atsufumi Ozaki
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Publication number: 20100082214Abstract: A driving control system includes a controller which is configured to, in response to a command for starting an auto-cruise mode generated by the operation of an input device, control an engine speed or a vehicle speed so that a value detected by a speed detector falls within a cruising speed range, when the value detected by the speed detector is outside the cruising speed range; and to then cause the watercraft to cruise at a constant engine speed or at a constant vehicle speed.Type: ApplicationFiled: September 26, 2008Publication date: April 1, 2010Applicant: Kawasaki Jukogyo Kabushiki KaishaInventors: Toshio ARAKI, Atsufumi OZAKI, Satoru WATABE
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Patent number: 7632162Abstract: In a personal watercraft equipped with a multi-cylinder engine including an exhaust collecting system configured to discharge an exhaust gas from the engine, the exhaust collecting system comprising a plurality of exhaust passages respectively corresponding to a plurality of cylinders provided in the multi-cylinder engine, an exhaust collecting passage which is located downstream of the plurality of exhaust passages in a flow direction of the exhaust gas and is configured to collect the plurality of exhaust passages, a water jacket formed at an outer peripheral region of each of the plurality of exhaust passages, for cooling the exhaust gas flowing in the exhaust passages, and a connecting passage configured to connect at least two of the plurality of exhaust passages.Type: GrantFiled: September 6, 2007Date of Patent: December 15, 2009Assignee: Kawasaki Jukogyo Kabushiki KaishaInventors: Atsufumi Ozaki, Yasuo Okada
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Publication number: 20080280512Abstract: A jet-propulsion personal watercraft includes an engine configured to generate a driving power for generating a propulsion force to propel the watercraft, an engine speed changing system configured to be able to change an engine speed of the engine, a determiner configured to determine whether or not to execute control for effectively steering the watercraft at start of deceleration, and an engine controller configured to control the engine speed changing system based on information received from the determiner. The engine controller is configured to, when the determiner determines that the control for effectively steering the watercraft should not be executed, control the engine speed changing system so that a decrease rate of the engine speed immediately after the determination is smaller than a decrease rate of the engine speed in a case where the determiner determines that the control for effectively steering the watercraft should not be executed.Type: ApplicationFiled: May 8, 2008Publication date: November 13, 2008Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Atsufumi Ozaki, Satoru Watabe
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Patent number: 7392779Abstract: An engine equipped with an air-intake device for a personal watercraft, includes a cylinder head cover attached to an upper surface of a cylinder head, a plug cap with ignition coil configured to protrude upward from an upper surface of the cylinder head cover; and an air box for the air-intake device that is disposed above the cylinder head cover and is provided on a lower surface thereof with an air inlet that opens to be opposite to the upper surface of the cylinder head cover. The air box is disposed in such a manner that the lower surface of the air box is opposite to the upper surface of the cylinder head cover and a gap is formed between the lower surface of the air box and the upper surface of the cylinder head cover so as to form an air flow in the vicinity of the plug cap with ignition coil that is directed to the air inlet of the air box.Type: GrantFiled: March 23, 2007Date of Patent: July 1, 2008Assignee: Kawasaki Jukogyo Kabushiki KaishaInventors: Keiji Takahashi, Atsufumi Ozaki
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Patent number: 7367856Abstract: A personal watercraft with a supercharging device and an intercooler is disclosed. The personal watercraft may include an engine, a water jet pump, a propeller shaft to transmit an output power of the engine to the water jet pump, and a bearing case configured to support a front portion of the propeller shaft. The personal watercraft may further include a supercharging device configured to pressurize air taken in from outside and supplied to the engine, an intercooler configured to cool the air pressurized and compressed by the supercharging device, and a pump room which is formed on a bottom surface of a rear end portion of the body and is configured to accommodate the water jet pump therein. The intercooler may be positioned forward of the pump room and behind the engine and may be mounted to an upper surface of the bearing case.Type: GrantFiled: May 29, 2007Date of Patent: May 6, 2008Assignee: Kawasaki Jukogyo Kabushiki KaishaInventors: Keiji Takahashi, Toshio Araki, Atsufumi Ozaki
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Patent number: 7344424Abstract: A water-jet propulsion personal watercraft is disclosed, including a multiple-cylinder engine mounted in a body of the watercraft and configured to drive a water jet pump configured to propel the watercraft, and a mechanically driven supercharger configured to supply air taken in from outside to the engine. The engine typically has air-intake ports configured to open toward one side relative to the engine and exhaust ports configured to open toward an opposite side relative to the engine. The supercharger is typically disposed on the one side relative to the engine.Type: GrantFiled: February 9, 2005Date of Patent: March 18, 2008Assignee: Kawasaki Jukogyo Kabushiki KaishaInventors: Atsufumi Ozaki, Keiji Takahashi
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Publication number: 20080057803Abstract: In a personal watercraft equipped with a multi-cylinder engine including an exhaust collecting system configured to discharge an exhaust gas from the engine, the exhaust collecting system comprising a plurality of exhaust passages respectively corresponding to a plurality of cylinders provided in the multi-cylinder engine, an exhaust collecting passage which is located downstream of the plurality of exhaust passages in a flow direction of the exhaust gas and is configured to collect the plurality of exhaust passages, a water jacket formed at an outer peripheral region of each of the plurality of exhaust passages, for cooling the exhaust gas flowing in the exhaust passages, and a connecting passage configured to connect at least two of the plurality of exhaust passages.Type: ApplicationFiled: September 6, 2007Publication date: March 6, 2008Applicant: Kawasaki Jukogyo Kabushiki KaishaInventors: Atsufumi Ozaki, Yasuo Okada
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Publication number: 20080003895Abstract: A personal watercraft with a supercharging device and an intercooler is disclosed. The personal watercraft may include an engine, a water jet pump, a propeller shaft to transmit an output power of the engine to the water jet pump, and a bearing case configured to support a front portion of the propeller shaft. The personal watercraft may further include a supercharging device configured to pressurize air taken in from outside and supplied to the engine, an intercooler configured to cool the air pressurized and compressed by the supercharging device, and a pump room which is formed on a bottom surface of a rear end portion of the body and is configured to accommodate the water jet pump therein. The intercooler may be positioned forward of the pump room and behind the engine and may be mounted to an upper surface of the bearing case.Type: ApplicationFiled: May 29, 2007Publication date: January 3, 2008Inventors: Keiji Takahashi, Toshio Araki, Atsufumi Ozaki
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Publication number: 20070221182Abstract: An engine equipped with an air-intake device for a personal watercraft, includes a cylinder head cover attached to an upper surface of a cylinder head, a plug cap with ignition coil configured to protrude upward from an upper surface of the cylinder head cover; and an air box for the air-intake device that is disposed above the cylinder head cover and is provided on a lower surface thereof with an air inlet that opens to be opposite to the upper surface of the cylinder head cover. The air box is disposed in such a manner that the lower surface of the air box is opposite to the upper surface of the cylinder head cover and a gap is formed between the lower surface of the air box and the upper surface of the cylinder head cover so as to form an air flow in the vicinity of the plug cap with ignition coil that is directed to the air inlet of the air box.Type: ApplicationFiled: March 23, 2007Publication date: September 27, 2007Inventors: Keiji Takahashi, Atsufumi Ozaki
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Publication number: 20070215124Abstract: An engine for a personal watercraft that is equipped with a supercharging machine, including a pressure release device that is configured to, when a pressure in a region of an air-intake passage of the engine that is located upstream of a throttle valve in an intake-air flow direction exceeds a predetermined value, release the pressure outside the air-intake passage.Type: ApplicationFiled: March 15, 2007Publication date: September 20, 2007Inventors: Atsufumi Ozaki, Keiji Takahashi
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Patent number: 7230547Abstract: An indicator light apparatus of a marine vessel is provided. The indicator light apparatus includes a sensor for detecting a value related to a traveling speed of the marine vessel, an indicator light provided in the marine vessel, and a control device configured to change an illuminating pattern of the indicator light based on the value related to the traveling speed detected by the sensor.Type: GrantFiled: March 7, 2005Date of Patent: June 12, 2007Assignee: Kawasaki Jukogyo Kabushiki KaishaInventors: Atsufumi Ozaki, Keiji Takahashi