Patents by Inventor Takehiro Nakashima
Takehiro Nakashima 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: 7806223Abstract: A frame of a motorcycle includes a head pipe configured to support a steering shaft, a first frame configured to extend from the head pipe, through above and rearward of an engine, and to rearward of a vehicle body, a second frame that is located under the first frame and configured to extend from the head pipe, through forward and downward of the engine, and to rearward of the vehicle body, a bracket by which a first component is mounted to the second frame, and a coupling member that is mounted to the second frame to couple a second component to the second frame, and the bracket is integral with the coupling member. An engine bracket of a motorcycle is manufactured by forging such that a region subjected to tensile stress is made thicker than a region in the vicinity of the region which is subjected to the tensile stress.Type: GrantFiled: November 2, 2009Date of Patent: October 5, 2010Assignee: Kawasaki Jukogyo Kabushiki KaishaInventors: Nobuhiko Kurokawa, Yoshihiro Masuda, Takehiro Nakashima, Akira Takasu, Toshiyuki Miyake
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Publication number: 20100044139Abstract: A frame of a motorcycle includes a head pipe configured to support a steering shaft, a first frame configured to extend from the head pipe, through above and rearward of an engine, and to rearward of a vehicle body, a second frame that is located under the first frame and configured to extend from the head pipe, through forward and downward of the engine, and to rearward of the vehicle body, a bracket by which a first component is mounted to the second frame, and a coupling member that is mounted to the second frame to couple a second component to the second frame, and the bracket is integral with the coupling member. An engine bracket of a motorcycle is manufactured by forging such that a region subjected to tensile stress is made thicker than a region in the vicinity of the region which is subjected to the tensile stress.Type: ApplicationFiled: November 2, 2009Publication date: February 25, 2010Applicant: Kawasaki Jukogyo Kabushiki KaishaInventors: Nobuhiko Kurokawa, Yoshihiro Masuda, Takehiro Nakashima, Akira Takasu, Toshiyuki Miyake
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Patent number: 7637345Abstract: A frame of a motorcycle includes a head pipe configured to support a steering shaft, a first frame configured to extend from the head pipe, through above and rearward of an engine, and to rearward of a vehicle body, a second frame that is located under the first frame and configured to extend from the head pipe, through forward and downward of the engine, and to rearward of the vehicle body, a bracket by which a first component is mounted to the second frame, and a coupling member that is mounted to the second frame to couple a second component to the second frame, and the bracket is integral with the coupling member. An engine bracket of a motorcycle is manufactured by forging such that a region subjected to tensile stress is made thicker than a region in the vicinity of the region which is subjected to the tensile stress.Type: GrantFiled: December 21, 2005Date of Patent: December 29, 2009Assignee: Kawasaki Jukogyo Kabushiki KaishaInventors: Nobuhiko Kurokawa, Yoshihiro Masuda, Takehiro Nakashima, Akira Takasu, Toshiyuki Miyake
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Patent number: 7537077Abstract: A shroud, typically of an off-road motorcycle is provided. The motorcycle includes a fuel tank provided in an upper front portion of the motorcycle body. The shroud structure includes an upper shroud that extends along a side face of the fuel tank and covers the fuel tank, and a lower shroud disposed below the upper shroud. The upper and lower shrouds are detachably coupled to each other.Type: GrantFiled: March 31, 2006Date of Patent: May 26, 2009Assignee: Kawasaki Jukogyo Kabushiki KaishaInventors: Takehiro Nakashima, Yoshihiro Masuda, Nobuhiko Kurokawa
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Patent number: 7503575Abstract: A body frame of a two-wheeled vehicle. The body frame typically includes a head pipe to which a steering shaft extending substantially vertically is rotatably mounted. The head pipe includes an upper head pipe and a lower head pipe that are configured to be molded and to be coupled to each other. The upper head pipe includes an upper tubular portion into which the steering shaft is inserted and a main frame tongue portion that is configured to extend rearward from the upper tubular portion and is configured to support a front portion of the main frame from above. The lower head pipe includes a lower tubular portion into which the steering shaft is inserted and a down tube tongue portion that is configured to extend downward from the lower tubular portion and to support an upper portion of the down tube from forward.Type: GrantFiled: December 27, 2005Date of Patent: March 17, 2009Assignee: Kawasaki Jukogyo Kabushiki KaishaInventors: Nobuhiko Kurokawa, Yoshihiro Masuda, Takehiro Nakashima, Akira Takasu, Toshiyuki Miyake, Kaoru Sugita
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Publication number: 20060254844Abstract: A shroud, typically of an off-road motorcycle is provided. The motorcycle includes a fuel tank provided in an upper front portion of the motorcycle body. The shroud structure includes an upper shroud that extends along a side face of the fuel tank and covers the fuel tank, and a lower shroud disposed below the upper shroud. The upper and lower shrouds are detachably coupled to each other.Type: ApplicationFiled: March 31, 2006Publication date: November 16, 2006Inventors: Takehiro Nakashima, Yoshihiro Masuda, Nobuhiko Kurokawa
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Publication number: 20060169511Abstract: A frame of a motorcycle includes a head pipe configured to support a steering shaft, a first frame configured to extend from the head pipe, through above and rearward of an engine, and to rearward of a vehicle body, a second frame that is located under the first frame and configured to extend from the head pipe, through forward and downward of the engine, and to rearward of the vehicle body, a bracket by which a first component is mounted to the second frame, and a coupling member that is mounted to the second frame to couple a second component to the second frame, and the bracket is integral with the coupling member. An engine bracket of a motorcycle is manufactured by forging such that a region subjected to tensile stress is made thicker than a region in the vicinity of the region which is subjected to the tensile stress.Type: ApplicationFiled: December 21, 2005Publication date: August 3, 2006Inventors: Nobuhiko Kurokawa, Yoshihiro Masuda, Takehiro Nakashima, Akira Takasu, Toshiyuki Miyake
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Publication number: 20060157955Abstract: A body frame of a two-wheeled vehicle. The body frame typically includes a head pipe to which a steering shaft extending substantially vertically is rotatably mounted. The head pipe includes an upper head pipe and a lower head pipe that are configured to be molded and to be coupled to each other. The upper head pipe includes an upper tubular portion into which the steering shaft is inserted and a main frame tongue portion that is configured to extend rearward from the upper tubular portion and is configured to support a front portion of the main frame from above. The lower head pipe includes a lower tubular portion into which the steering shaft is inserted and a down tube tongue portion that is configured to extend downward from the lower tubular portion and to support an upper portion of the down tube from forward.Type: ApplicationFiled: December 27, 2005Publication date: July 20, 2006Inventors: Nobuhiko Kurokawa, Yoshihiro Masuda, Takehiro Nakashima, Akira Takasu, Toshiyuki Miyake, Kaoru Sugita
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Patent number: 6508187Abstract: The present invention provides a watercraft having steering components (steering tabs or stabilizers) for maintaining steering capability even while amount of water ejected from a propulsion pump is decreased. The steering components are movably disposed on a hull of the watercraft at or below the water level on both right and left sides to be in an “Operating State” in which resistance of water is larger or to be in a “Non-operating State” in which the resistance of water is smaller in accordance with steering operation. Furthermore, a mechanism for absorbing an external force acting on the steering components in the “Operating State” is located in a system for operating the steering components. The mechanism reacts to the external force to allow the steering components to be transformed into the “Non-operating State.Type: GrantFiled: January 11, 2001Date of Patent: January 21, 2003Assignee: Kawasaki Jukogyo Kabushiki KaishaInventors: Kiyoaki Maeda, Yoshinori Tsumiyama, Takehiro Nakashima, Kanji Kiyohara, Haruyoshi Maruyama, Masafumi Ikeyama, Haruki Okada, Kunihiko Kamio, Troy Kite, Chris Hagest, Joe Heim
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Patent number: 6415728Abstract: An inner frame member, of a length that is less than the entire length of a hull, is joined to the inner surface of the hull that forms a lower portion of a body of a personal watercraft. The inner frame member has an engine mount portion that supports an engine thereon, an impeller shaft support region that supports thereon an impeller shaft of a propulsion device driven by the engine, and bulkheads extending in the lateral direction of the hull and joined to the inner surface of the hull. In accordance with the present invention, the personal watercraft is light weight, but also retains rigidity and assembling efficiency of the hull.Type: GrantFiled: November 22, 2000Date of Patent: July 9, 2002Assignee: Kawasaki Jukogyo Kabushiki KaishaInventors: Kiyoaki Maeda, Yoshinori Tsumiyama, Kenichi Nakagawa, Takehiro Nakashima
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Patent number: 6318286Abstract: Provided is a hull shape of a personal watercraft which can enhance speed performance, and still more, can also reduce rolling of a body. A bulging face 12 is formed on an outside part of a rear portion of a hull bottom 20 having a substantially V-shaped cross section and protrudes downward from an outside front face 20a positioned in front of the outside part. The bulging face 12 includes a fore part 13 inclined downward in the rearward direction, and a rear part 14 positioned above a virtual face A extended rearwardly from the fore part 13.Type: GrantFiled: February 4, 2000Date of Patent: November 20, 2001Assignee: Kawasaki Jukogyo Kabushiki KaishaInventors: Takehiro Nakashima, Haruyoshi Maruyama, Mitsuhiro Yazaki, Kanji Kiyohara, Hisashi Fujii
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Publication number: 20010018884Abstract: The present invention provides a watercraft having steering components (steering tabs or stabilizers) for maintaining steering capability even while amount of water ejected from a propulsion pump is decreased. The steering components are movably disposed on a hull of the watercraft at or below the water level on both right and left sides to be in an “Operating State” in which resistance of water is larger or to be in a “Non-operating State” in which the resistance of water is smaller in accordance with steering operation. Furthermore, a mechanism for absorbing an external force acting on the steering components in the “Operating State” is located in a system for operating the steering components. The mechanism reacts to the external force to allow the steering components to be transformed into the “Non-operating State.Type: ApplicationFiled: January 11, 2001Publication date: September 6, 2001Inventors: Kiyoaki Maeda, Yoshinori Tsumiyama, Takehiro Nakashima, Kanji Kiyohara, Haruyoshi Maruyama, Masafumi Ikeyama, Haruki Okada, Kunihiko Kamio, Troy Kite, Chris Hagest, Joe Heim
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Patent number: 6244916Abstract: Provided is an oil feeding structure of a personal watercraft capable of enhancing the appearance design of the personal watercraft and of readily letting air out of a tank during oil feeding, thereby smoothly feeding oil. A surface 15 inclined outward and downward is formed on both sides of the highest portion on a deck 2, that is, a portion between a housing portion B for a storage box 11 and a housing portion S for a steering mechanism. Oil feeding ports 9 and 10 are formed on the inclined surfaces, respectively. First and second oil feeding pipe members 17 and 18 are arranged downward in a substantially vertical direction from the oil feeding ports 9 and 10, and are connected to a fuel tank 7 and a lubricating oil tank 8 substantially rectilinearly, respectively.Type: GrantFiled: August 10, 1999Date of Patent: June 12, 2001Assignee: Kawasaki Jukogyo Kabushiki KaishaInventors: Yukio Asakura, Takehiro Nakashima
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Patent number: 6237522Abstract: A bottom structure of a personal watercraft enhances the running performance of a personal watercraft. A concavo-convex face (21) having very small concave or convex portions for drawing air from an outside of a watercraft is formed on a water contact face (S) in a bottom surface (20) of the personal watercraft during planing. The air is drawn by the concavo-convex face (21), thereby separating a water flow from the bottom surface (20). Consequently, frictional resistance to the water in the bottom surface (20) can be reduced.Type: GrantFiled: March 16, 2000Date of Patent: May 29, 2001Assignee: Kawasaki Jukogyo Kabushiki KaishaInventors: Kanji Kiyohara, Mitsuhiro Yazaki, Takehiro Nakashima, Haruyoshi Maruyama, Hisashi Fujii, Takeshi Sugawara
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Patent number: D425011Type: GrantFiled: May 3, 1999Date of Patent: May 16, 2000Assignee: Kawasaki Jukogyo Kabushiki KaishaInventors: Takehiro Nakashima, Haruyoshi Maruyama