Patents by Inventor Kazuhiro Ishizaka
Kazuhiro Ishizaka 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: 20080257319Abstract: A breather device of a vertical type engine includes: an engine body having a crank chamber and a cylinder bore; and a timing transmission chamber provided above the engine body and housing a timing transmission device that connects between a crankshaft and a cam shaft which are vertically placed, respectively, the timing transmission chamber communicating at one side with the crank chamber and at the other side with the outside, wherein the breather device includes a breather chamber communicating with the timing transmission chamber via a communication tube, the breather chamber communicating with an intake silencer box. Hence, oil can be efficiently separated from breathing gas of a crank chamber.Type: ApplicationFiled: March 27, 2008Publication date: October 23, 2008Applicant: HONDA MOTOR CO., LTD.Inventors: Kazuhiro ISHIZAKA, Atsumu NAOI
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Publication number: 20080245321Abstract: A vertical type engine includes: an engine body having a crank chamber and a cylinder bore; and a timing transmission chamber provided above the engine body and housing a timing transmission device that connects between a crankshaft and a cam shaft which are vertically placed, respectively, wherein a generator driven by the crankshaft is placed above the timing transmission device, and a breather chamber communicating with the crank chamber and an intake silencer box is provided between the generator and the crank chamber placed below the generator on the side opposite from the cam shaft with respect to the crankshaft. Hence, a vertical type engine that includes a breather chamber dedicated for gas-liquid separation and is compact can be achieved.Type: ApplicationFiled: March 27, 2008Publication date: October 9, 2008Applicant: HONDA MOTOR CO., LTDInventors: Kazuhiro ISHIZAKA, Atsumu Naoi
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Patent number: 7421997Abstract: An outboard engine unit having heat-generating electrical equipment. An intake port of an intake silencer is set at a distance from an engine, and air suctioned from the intake port is unlikely to be affected by heat produced by the engine. Electrical equipment is disposed in a direction of opening of the intake port, and air around the electrical equipment thereby circulates when air is suctioned from the intake port.Type: GrantFiled: March 30, 2007Date of Patent: September 9, 2008Assignee: Honda Motor Co., Ltd.Inventors: Kazuhiro Ishizaka, Toru Kimura, Takeshi Inaba, Hiroshi Yamamoto
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Publication number: 20070277766Abstract: An outboard engine unit has an intake manifold extending in a front-and-rear direction along one side of an engine block and comprised of a surge tank and a plurality of intake tubes communicating with the surge tank. Each of the intake tubes is arranged so as to be separated in a vertical direction. The shape of the channel cross section of each of the intake tubes is a flat shape in which the dimension in the vertical direction is less than the dimension in a crosswise direction.Type: ApplicationFiled: May 31, 2007Publication date: December 6, 2007Applicant: HONDA MOTOR CO., LTD.Inventors: Masanori Tsubouchi, Kazuhiro Ishizaka
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Publication number: 20070266988Abstract: An outboard engine unit having heat-generating electrical equipment. An intake port of an intake silencer is set at a distance from an engine, and air suctioned from the intake port is unlikely to be affected by heat produced by the engine. Electrical equipment is disposed in a direction of opening of the intake port, and air around the electrical equipment thereby circulates when air is suctioned from the intake port.Type: ApplicationFiled: March 30, 2007Publication date: November 22, 2007Applicant: HONDA MOTOR CO., LTD.Inventors: Kazuhiro Ishizaka, Toru Kimura, Takeshi Inaba, Hiroshi Yamamoto
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Patent number: 7121248Abstract: Recesses are provided in portions of a head cover and a crankcase which are opposed to outer peripheries of a timing chain and a balancer-driving chain driven by a crankshaft of a vertical engine, whereby vertical walls and horizontal walls are formed to oppose to outer peripheral surfaces and lower surfaces of the timing chain and the balancer-driving chain. An oil scattered from the timing chain and the balancer-driving chain by a centrifugal force is caught on the vertical walls, and the oil flowing down along the vertical walls by gravitation is retained on the underlying horizontal walls, whereby the oil can be brought into contact with the chains without waste to effectively lubricate the chains.Type: GrantFiled: May 25, 2004Date of Patent: October 17, 2006Assignee: Honda Motor Co., Ltd.Inventors: Yoshihiko Fukuda, Hiroki Tawa, Kazuhiro Ishizaka
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Patent number: 7066134Abstract: In a vertical engine, a bulged portion protrudes upwards, in conformity to a partially cylindrical outer wall of uppermost one of cylinders, on an upper surface of a cylinder block forming a bottom wall of a chain chamber accommodating a chain for driving a camshaft and a balancer shaft through a crankshaft. A pair of oil return bores for returning an oil in the chain chamber to an oil pan are provided in lower portions of the bottom wall on opposite sides of an axis of the bulged portion. The oil which has lubricated the chain in the chain chamber flows so that it is distributed to the opposite sides of the axis, and the oil is returned smoothly from the oil return bores formed in the bottom wall to the oil pan.Type: GrantFiled: May 25, 2004Date of Patent: June 27, 2006Assignee: Honda Motor Co., Ltd.Inventors: Yoshihiko Fukuda, Hiroki Tawa, Kazuhiro Ishizaka
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Patent number: 7055488Abstract: A first chain mechanism for transmitting the rotation of a crankshaft of an vertical engine to a camshaft and a second chain mechanism for transmitting the rotation of the crankshaft to a balancer shaft are forcibly lubricated by an oil injected by first, second and third oil jets mounted within a chain chamber. The first, second and third oil jets are disposed at locations closer to the crankshaft, the cam shaft and the balancer shaft, respectively, and the first and second oil jets are disposed inside a travel locus for a timing chain. Thus, the chain mechanisms disposed in a plane of the vertical engine can be lubricated effectively.Type: GrantFiled: May 25, 2004Date of Patent: June 6, 2006Assignee: Honda Motor Co., Ltd.Inventors: Hiroki Tawa, Yoshihiko Fukuda, Kazuhiro Ishizaka
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Publication number: 20050005894Abstract: Recesses are provided in portions of a head cover and a crankcase which are opposed to outer peripheries of a timing chain and a balancer-driving chain driven by a crankshaft of a vertical engine, whereby vertical walls and horizontal walls are formed to oppose to outer peripheral surfaces and lower surfaces of the timing chain and the balancer-driving chain. An oil scattered from the timing chain and the balancer-driving chain by a centrifugal force is caught on the vertical walls, and the oil flowing down along the vertical walls by gravitation is retained on the underlying horizontal walls, whereby the oil can be brought into contact with the chains without waste to effectively lubricate the chains.Type: ApplicationFiled: May 25, 2004Publication date: January 13, 2005Inventors: Yoshihiko Fukuda, Hiroki Tawa, Kazuhiro Ishizaka
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Publication number: 20050005896Abstract: A first chain mechanism for transmitting the rotation of a crankshaft of an vertical engine to a camshaft and a second chain mechanism for transmitting the rotation of the crankshaft to a balancer shaft are forcibly lubricated by an oil injected by first, second and third oil jets mounted within a chain chamber. The first, second and third oil jets are disposed at locations closer to the crankshaft, the cam shaft and the balancer shaft, respectively, and the first and second oil jets are disposed inside a travel locus for a timing chain. Thus, the chain mechanisms disposed in a plane of the vertical engine can be lubricated effectively.Type: ApplicationFiled: May 25, 2004Publication date: January 13, 2005Inventors: Hiroki Tawa, Yoshihiko Fukuda, Kazuhiro Ishizaka
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Publication number: 20050005895Abstract: In a vertical engine, a bulged portion protrudes upwards, in conformity to a partially cylindrical outer wall of uppermost one of cylinders, on an upper surface of a cylinder block forming a bottom wall of a chain chamber accommodating a chain for driving a camshaft and a balancer shaft through a crankshaft. A pair of oil return bores for returning an oil in the chain chamber to an oil pan are provided in lower portions of the bottom wall on opposite sides of an axis of the bulged portion. The oil which has lubricated the chain in the chain chamber flows so that it is distributed to the opposite sides of the axis, and the oil is returned smoothly from the oil return bores formed in the bottom wall to the oil pan.Type: ApplicationFiled: May 25, 2004Publication date: January 13, 2005Inventors: Yoshihiko Fukuda, Hiroki Tawa, Kazuhiro Ishizaka