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: 7052343Abstract: A personal watercraft is disclosed. The personal watercraft typically includes a body formed by a hull and a deck covering the hull from above and having an inner space defined by the hull and the deck, an engine accommodated in the inner space of the body, and an exhaust pipe accommodated in the inner space and configured to guide an exhaust gas emitted from the engine outside the body. The body is typically provided with a penetrating hole through which an inside of the body and an outside of the body communicate with each other. The exhaust pipe is typically configured to extend through the penetrating hole and mounted to the body by a mounting device in the vicinity of the penetrating hole, and the mounting device is removably mounted to the body from outside the body.Type: GrantFiled: December 29, 2004Date of Patent: May 30, 2006Assignee: Kawasaki Jukogyo Kabushiki KaishaInventors: Atsufumi Ozaki, Keiji Takahashi
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Patent number: 7044814Abstract: A main switch apparatus of a small watercraft is provided. The main switch apparatus of a small watercraft having a main switch. The main switch apparatus includes a plurality of keys, each for operating the main switch, each assigned a different user ID information. The main switch apparatus may further include an ID information detector for detecting the user ID information assigned to one of the plurality of keys applied to the main switch, a controller for controlling the small watercraft, configured to be activated by each one of the plurality of keys, and a control pattern memory for storing a plurality of control patterns of the controller corresponding to the respective user ID information. The controller is typically configured to read out the control pattern stored in the control pattern memory corresponding to the user ID information detected by the user ID information detector and to execute a control of the watercraft based on the read out control pattern.Type: GrantFiled: February 16, 2005Date of Patent: May 16, 2006Assignee: Kawasaki Jukogyo Kabushiki KaishaInventors: Kunihiko Kamio, Atsufumi Ozaki, Keiji Takahashi, Toshio Araki, Satoru Watabe
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Patent number: 7017532Abstract: An engine for a personal watercraft uses an open-looped cooling system and comprises a cylinder block having a water jacket within which cooling water flows, and a piston that reciprocates within the cylinder block, and a dimension of the water jacket in a reciprocation direction of the piston is equal to or less than a half of a reciprocation distance of the piston.Type: GrantFiled: November 14, 2003Date of Patent: March 28, 2006Assignee: Kawasaki Jukogyo Kabushiki KaishaInventors: Atsufumi Ozaki, Yasuo Okada, Hideaki Ebisui
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Patent number: 6988919Abstract: An oil cooler of an engine for small watercraft. The oil cooler typically includes a mounting portion configured to mount the oil cooler on an outer wall face of an engine of the small watercraft, an oil passage configured to allow oil to flow therethrough and lead to outside of the oil cooler at the mounting portion, and a coolant passage through which coolant for cooling the oil flows, wherein the oil cooler is capable of being disassembled such that an inside of at least the coolant passage is exposed.Type: GrantFiled: October 28, 2003Date of Patent: January 24, 2006Assignee: Kawasaki Jukogyo Kabushiki KaishaInventors: Yoshinobu Tanaka, Atsufumi Ozaki, Yoshimoto Matsuda, Yasuo Okada, Hideaki Ebisui
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Publication number: 20050200468Abstract: 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: ApplicationFiled: March 7, 2005Publication date: September 15, 2005Inventors: Atsufumi Ozaki, Keiji Takahashi
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Publication number: 20050181685Abstract: A main switch apparatus of a small watercraft is provided. The main switch apparatus of a small watercraft having a main switch. The main switch apparatus includes a plurality of keys, each for operating the main switch, each assigned a different user ID information. The main switch apparatus may further include an ID information detector for detecting the user ID information assigned to one of the plurality of keys applied to the main switch, a controller for controlling the small watercraft, configured to be activated by each one of the plurality of keys, and a control pattern memory for storing a plurality of control patterns of the controller corresponding to the respective user ID information. The controller is typically configured to read out the control pattern stored in the control pattern memory corresponding to the user ID information detected by the user ID information detector and to execute a control of the watercraft based on the read out control pattern.Type: ApplicationFiled: February 16, 2005Publication date: August 18, 2005Inventors: Kunihiko Kamio, Atsufumi Ozaki, Keiji Takahashi, Toshio Araki, Satoru Watabe
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Publication number: 20050172919Abstract: 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: ApplicationFiled: February 9, 2005Publication date: August 11, 2005Inventors: Atsufumi Ozaki, Keiji Takahashi
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Publication number: 20050170717Abstract: A personal watercraft is disclosed. The personal watercraft typically includes a body formed by a hull and a deck covering the hull from above and having an inner space defined by the hull and the deck, an engine accommodated in the inner space of the body, and an exhaust pipe accommodated in the inner space and configured to guide an exhaust gas emitted from the engine outside the body. The body is typically provided with a penetrating hole through which an inside of the body and an outside of the body communicate with each other. The exhaust pipe is typically configured to extend through the penetrating hole and mounted to the body by a mounting device in the vicinity of the penetrating hole, and the mounting device is removably mounted to the body from outside the body.Type: ApplicationFiled: December 29, 2004Publication date: August 4, 2005Inventors: Atsufumi Ozaki, Keiji Takahashi
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Patent number: 6921308Abstract: A personal watercraft and engine therefor are provided. The engine typically is mounted in a personal watercraft and configured to discharge an exhaust gas through a water muffler. The engine typically includes a cylinder head forming a combustion chamber, wherein the cylinder head is provided with an exhaust port configured to draw the exhaust gas from the combustion chamber to the water muffler, and an air passage configured to allow the exhaust port and an outside of the engine to communicate with each other, and the air passage is provided with a valve configured to restrict a flow of air within the air passage.Type: GrantFiled: November 26, 2003Date of Patent: July 26, 2005Assignee: Kawasaki Jukogyo Kabushiki KaishaInventors: Yoshinobu Tanaka, Masaaki Miyoshi, Yoshimoto Matsuda, Atsufumi Ozaki
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Patent number: 6905381Abstract: A jet-propulsion small watercraft, comprises a water jet pump that pressurizes and accelerates water taken in from outside and ejects the water to propel the watercraft, a steering system configured to steer the watercraft by changing an ejection direction of the water, a steering throttle arm configured to cause a throttle valve of an engine to open, thereby maintaining a steering capability, in response to a closing operation of a throttle lever, an actuator configured to cause the throttle valve in a closed position to open by steering throttle arm, and a spring configured to return the throttle valve to the closed position, wherein the actuator includes a motor configured to be energized at a predetermined motor power value by control of a control device, a reduction mechanism configured to reduce a speed of the motor, and an output shaft configured to be rotated by the reduction mechanism.Type: GrantFiled: September 9, 2003Date of Patent: June 14, 2005Assignee: Kawasaki Jukogyo Kabushiki KaishaInventors: Toshio Araki, Atsufumi Ozaki
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Patent number: 6855022Abstract: A first exhaust chamber and a second exhaust chamber are disposed within a body of a watercraft. The first exhaust chamber communicates with an exhaust port of an engine through a first exhaust pipe. A first space of the first exhaust chamber communicates with the second exhaust chamber through a first inverted-U shaped pipe. The second exhaust chamber communicates with another space of the first exhaust chamber through a second inverted-U shaped pipe. The first and second inverted-U shaped pipes are each positioned in the flow path of the exhaust gas and bent to be substantially inverted-U shaped. The other space of the first exhaust chamber communicates with an outside of the body through a second exhaust pipe. An uppermost portion of the first inverted-U shaped pipe and an uppermost portion of the second inverted-U shaped pipe are located higher than a waterline of the watercraft.Type: GrantFiled: September 11, 2003Date of Patent: February 15, 2005Assignee: Kawasaki Jukogyo Kabushiki KaishaInventors: Yoshimoto Matsuda, Yasuo Okada, Atsufumi Ozaki
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Patent number: 6776676Abstract: Disclosed is a jet-propulsion personal watercraft adapted to eject water pressurized and accelerated by a water jet pump from an outlet port so as to be propelled as the resulting reaction, the personal watercraft being provided with a cruising control switch to allow an electric control unit to control a throttle actuator in accordance with an operation of the cruising control switch so that the watercraft cruises at a predetermined cruising speed or engine speed.Type: GrantFiled: August 23, 2002Date of Patent: August 17, 2004Assignee: Kawasaki Jukogyo Kabushiki KaishaInventors: Yoshinobu Tanaka, Toshio Araki, Atsufumi Ozaki, Yoshimoto Matsuda
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Publication number: 20040134451Abstract: An engine for a personal watercraft uses an open-looped cooling system and comprises a cylinder block having a water jacket within which cooling water flows, and a piston that reciprocates within the cylinder block, and a dimension of the water jacket in a reciprocation direction of the piston is equal to or less than a half of a reciprocation distance of the piston.Type: ApplicationFiled: November 14, 2003Publication date: July 15, 2004Inventors: Atsufumi Ozaki, Yasuo Okada, Hideaki Ebisui
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Publication number: 20040132359Abstract: An oil cooler of an engine for small watercraft. The oil cooler typically includes a mounting portion configured to mount the oil cooler on an outer wall face of an engine of the small watercraft, an oil passage configured to allow oil to flow therethrough and lead to outside of the oil cooler at the mounting portion, and a coolant passage through which coolant for cooling the oil flows, wherein the oil cooler is capable of being disassembled such that an inside of at least the coolant passage is exposed.Type: ApplicationFiled: October 28, 2003Publication date: July 8, 2004Inventors: Yoshinobu Tanaka, Atsufumi Ozaki, Yoshimoto Matsuda, Yasuo Okada, Hideaki Ebisui
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Publication number: 20040132357Abstract: A personal watercraft and engine therefor are provided. The engine typically is mounted in a personal watercraft and configured to discharge an exhaust gas through a water muffler. The engine typically includes a cylinder head forming a combustion chamber, wherein the cylinder head is provided with an exhaust port configured to draw the exhaust gas from the combustion chamber to the water muffler, and an air passage configured to allow the exhaust port and an outside of the engine to communicate with each other, and the air passage is provided with a valve configured to restrict a flow of air within the air passage.Type: ApplicationFiled: November 26, 2003Publication date: July 8, 2004Inventors: Yoshinobu Tanaka, Masaaki Miyoshi, Yoshimoto Matsuda, Atsufumi Ozaki
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Publication number: 20040082236Abstract: A first exhaust chamber and a second exhaust chamber are disposed within a body of a watercraft. The first exhaust chamber communicates with an exhaust port of an engine through a first exhaust pipe. A first space of the first exhaust chamber communicates with the second exhaust chamber through a first inverted-U shaped pipe. The second exhaust chamber communicates with another space of the first exhaust chamber through a second inverted-U shaped pipe. The first and second inverted-U shaped pipes are each positioned in the flow path of the exhaust gas and bent to be substantially inverted-U shaped. The other space of the first exhaust chamber communicates with an outside of the body through a second exhaust pipe. An uppermost portion of the first inverted-U shaped pipe and an uppermost portion of the second inverted-U shaped pipe are located higher than a waterline of the watercraft.Type: ApplicationFiled: September 11, 2003Publication date: April 29, 2004Inventors: Yoshimoto Matsuda, Yasuo Okada, Atsufumi Ozaki
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Publication number: 20040082232Abstract: A jet-propulsion small watercraft, comprises a water jet pump that pressurizes and accelerates water taken in from outside and ejects the water to propel the watercraft, a steering system configured to steer the watercraft by changing an ejection direction of the water, a steering throttle arm configured to cause a throttle valve of an engine to open, thereby maintaining a steering capability, in response to a closing operation of a throttle lever, an actuator configured to cause the throttle valve in a closed position to open by steering throttle arm, and a spring configured to return the throttle valve to the closed position, wherein the actuator includes a motor configured to be energized at a predetermined motor power value by control of a control device, a reduction mechanism configured to reduce a speed of the motor, and an output shaft configured to be rotated by the reduction mechanism.Type: ApplicationFiled: September 9, 2003Publication date: April 29, 2004Inventors: Toshio Araki, Atsufumi Ozaki
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Publication number: 20040038602Abstract: Disclosed is a jet-propulsion personal watercraft adapted to eject water pressurized and accelerated by a water jet pump from an outlet port so as to be propelled as the resulting reaction, the personal watercraft being provided with a cruising control switch to allow an electric control unit to control a throttle actuator in accordance with an operation of the cruising control switch so that the watercraft cruises at a predetermined cruising speed or engine speed.Type: ApplicationFiled: August 23, 2002Publication date: February 26, 2004Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Yoshinobu Tanaka, Toshio Araki, Atsufumi Ozaki, Yoshimoto Matsuda
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Patent number: 6659820Abstract: Disclosed is a jet-propulsion watercraft capable of maintaining cooling capability in an exhaust passage even when one cooling water passage is clogged with substances. The jet-propulsion watercraft comprises: an engine having a cooling water passage; an exhaust passage having a double-walled structure comprised of inner and outer walls between which a cooling water passage is at least partially formed; a water jet pump, the water jet pump pressurizing and accelerating water and ejecting the water from the outlet port, and supplying part of the water to the cooling water passages of the engine and the exhaust passage; a water-supply hole formed in the inner wall of the double-walled structure; a first cooling water passage for supplying the cooling water to the cooling water passage between the outer wall and the inner wall; and a bypass passage formed independently of the first cooling water passage.Type: GrantFiled: July 23, 2002Date of Patent: December 9, 2003Assignee: Kawasaki Jukogyo Kabushiki KaishaInventors: Yoshimoto Matsuda, Atsufumi Ozaki, Yasuo Okada
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Patent number: 6588451Abstract: A holding structure for holding a device on a fuel tank can be manufactured by small man-hours, and is simple in construction and excellent in vibration isolating performance. The holding structure holds a device (11) inserted in a fuel tank (10) on the fuel tank (10). The holding structure includes a holding tube (19) formed integrally with the fuel tank (10) so as to surround an opening (18) formed in the fuel tank (10), an elastic boot (21) put on the holding tube (19) so as to be in close contact with the outer circumference (19a) of the holding tube (19) and the outer circumference (15a) of a part of the device (11), extending outside from the holding tube (19), and a fastening device (22, 23) for fastening the elastic boot (21) to the respective outer circumferences (19a, 15a) of the holding tube (19) and the device (11).Type: GrantFiled: March 6, 2001Date of Patent: July 8, 2003Assignee: Kawasaki Jukogyo Kabushiki KaishaInventors: Kazuhisa Kuroshita, Yukio Asakura, Atsufumi Ozaki