Patents by Inventor Hideaki Okada
Hideaki Okada 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: 9188177Abstract: A brake disc is provided capable of effectively reducing the generation of noise such as brake noise by making specifications relating to lightening holes different from each other between two brake disc plates. In the brake disc, two brake disc plates are laminated so as to slide on each other by vibration during braking, and specifications relating to one or more selected from lightening holes, plate thickness, diameter, and warpage are made different from each other between the brake disc plates. In addition, lightening holes are formed on at least one of the brake disc plates, and one or more specifications selected from the number of lightening holes, the shapes of the lightening holes, the sizes of the lightening holes, and the arrangement positions of the lightening holes are made different from each other between the brake disc plates.Type: GrantFiled: February 16, 2012Date of Patent: November 17, 2015Assignees: SUNSTAR ENGINEERING INC., THE DOSHISHAInventors: Toru Fujii, Kazuya Okubo, Kiyotaka Obunai, Yoshihisa Kubota, Hideaki Okada, Tsuyoshi Nakatsuji
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Publication number: 20140326550Abstract: A brake disc is provided capable of effectively reducing the generation of noise such as brake noise by making specifications relating to lightening holes different from each other between two brake disc plates. In the brake disc, two brake disc plates are laminated so as to slide on each other by vibration during braking, and specifications relating to one or more selected from lightening holes, plate thickness, diameter, and warpage are made different from each other between the brake disc plates. In addition, lightening holes are formed on at least one of the brake disc plates, and one or more specifications selected from the number of lightening holes, the shapes of the lightening holes, the sizes of the lightening holes, and the arrangement positions of the lightening holes are made different from each other between the brake disc plates.Type: ApplicationFiled: February 16, 2012Publication date: November 6, 2014Applicants: THE DOSHISHA, SUNSTAR ENGINEERING INC.Inventors: Toru Fujii, Kazuya Okubo, Kiyotaka Obunai, Yoshihisa Kubota, Hideaki Okada, Tsuyoshi Nakatsuji
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Patent number: 7921956Abstract: A hydraulic driving vehicle comprises front and rear transaxles incorporating respective hydraulic motors, and a pump unit separated from the front and rear transaxles. The pump unit incorporates a hydraulic pump having a pump shaft. A hydraulic circuit is formed by piping between the pump unit and the front and rear transaxles so as to circulate hydraulic fluid between the hydraulic pump and the hydraulic motors. A reservoir tank of the hydraulic fluid is connected to the hydraulic circuit by piping. A first cooling fan blowing air away from the pump unit and a second cooling fan blowing air toward the pump unit are disposed oppositely to each other with respect to the pump unit and drivingly connected to the pump shaft. At least a pipe for the piping of the hydraulic circuit and the reservoir tank passes an area blown by each of the first and second cooling fans.Type: GrantFiled: April 24, 2009Date of Patent: April 12, 2011Assignee: Kanzaki Kokyukoki Mfg. Co., Ltd.Inventors: Michio Tsukamoto, Hideaki Okada
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Patent number: 7896123Abstract: A vehicle includes a first transaxle incorporating a first hydraulic motor for driving a first axle, a pair of second transaxles incorporating respective second hydraulic motors for driving respective second axles, and a pump housing separated from the first transaxle and the pair of second transaxles. The pump housing incorporates a hydraulic pump. The first hydraulic motor and the pair of second hydraulic motors are fluidly connected in series to the hydraulic pump. The second hydraulic motors are fluidly connected in parallel to the hydraulic pump.Type: GrantFiled: July 10, 2006Date of Patent: March 1, 2011Assignee: Kanzaki Kokyukoki Mfg. Co., Ltd.Inventors: Ryota Ohashi, Hideaki Okada
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Patent number: 7647770Abstract: In a hydraulic four-wheel drive vehicle, a rear transaxle incorporates a hydraulic motor for driving rear wheels, a front transaxle incorporates a hydraulic motor for driving front wheels, and hydraulic pressure fluid pipes interposed between the front and rear transaxles are extended along at least one of left and right side plates of a frame of the vehicle.Type: GrantFiled: July 23, 2008Date of Patent: January 19, 2010Assignee: Kanzaki Kokyukoki Mfg. Co., Ltd.Inventors: Koji Iwaki, Shiro Ueno, Norihiro Ishii, Hideaki Okada, Fumitoshi Ishino, Hiroshi Sugimoto, Shinichi Hirose, Hironori Sumomozawa
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Patent number: 7621125Abstract: An axle driving system which houses in a housing thereof a hydrostatic transmission, axles, and a driving gear train for connecting output means of the hydraulic transmission and axles, so as to transmit power from a driving source to the hydrostatic transmission and to change the speed, thereby driving the axles. A first chamber therein contains the hydrostatic transmission and a second chamber therein contains the driving gear train. Both the first and second chambers are independent of each other so as to prevent a foreign object, such as iron powder produced in the driving gear train, from entering the hydrostatic transmission. The system includes an L-like-shaped center section on which the hydrostatic transmission is offset such that an imaginary plane which includes a motor mounting surface passes in proximity to the axis of a pump shaft. The pump shaft is disposed perpendicular to the axles. The motor shaft is disposed in parallel thereto.Type: GrantFiled: February 12, 2008Date of Patent: November 24, 2009Assignee: Kanzaki Kokyukoki Mfg. Co., Ltd.Inventors: Robert Abend, Hideaki Okada, Ryota Ohashi
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Publication number: 20090229907Abstract: A hydraulic driving vehicle comprises front and rear transaxles incorporating respective hydraulic motors, and a pump unit separated from the front and rear transaxles. The pump unit incorporates a hydraulic pump having a pump shaft. A hydraulic circuit is formed by piping between the pump unit and the front and rear transaxles so as to circulate hydraulic fluid between the hydraulic pump and the hydraulic motors. A reservoir tank of the hydraulic fluid is connected to the hydraulic circuit by piping. A first cooling fan blowing air away from the pump unit and a second cooling fan blowing air toward the pump unit are disposed oppositely to each other with respect to the pump unit and drivingly connected to the pump shaft. At least a pipe for the piping of the hydraulic circuit and the reservoir tank passes an area blown by each of the first and second cooling fans.Type: ApplicationFiled: April 24, 2009Publication date: September 17, 2009Inventors: Michio TSUKAMOTO, Hideaki Okada
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Patent number: 7588104Abstract: An articulated vehicle with a working device has a first frame having a prime mover mounted thereon and supporting a first transaxle apparatus. The first transaxle apparatus includes an input shaft receiving power from the prime mover, a pair of first axles, and a hydrostatic transmission. The hydrostatic transmission comprises a variable hydraulic pump, a first hydraulic motor fluidly connected to the hydraulic pump via a fluid passage, and a housing with a flexible port fluidly connected to the fluid passage. The second transaxle apparatus includes a pair of second axles having different lengths and a second hydraulic motor. The second hydraulic motor is fluidly connected via piping to a directionally adjustable connection portion of the flexible port. Proximal ends of the first and second frames with respect to the vehicle are coupled to each other so that the first and second frames are rotatable around a vertical axis relative to each other when steered.Type: GrantFiled: March 26, 2008Date of Patent: September 15, 2009Assignee: Kanzaki Kokyukoki Mfg. Co., Ltd.Inventors: Ryota Ohashi, Hideaki Okada
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Patent number: 7533753Abstract: A hydraulic driving vehicle comprises front and rear transaxles incorporating respective hydraulic motors, and a pump unit separated from the front and rear transaxles. The pump unit incorporates a hydraulic pump having a pump shaft. A hydraulic circuit is formed by piping between the pump unit and the front and rear transaxles so as to circulate hydraulic fluid between the hydraulic pump and the hydraulic motors. A reservoir tank of the hydraulic fluid is connected to the hydraulic circuit by piping. A first cooling fan blowing air away from the pump unit and a second cooling fan blowing air toward the pump unit are disposed oppositely to each other with respect to the pump unit and drivingly connected to the pump shaft. At least a pipe for the piping of the hydraulic circuit and the reservoir tank passes an area blown by each of the first and second cooling fans.Type: GrantFiled: October 30, 2007Date of Patent: May 19, 2009Assignee: Kanzaki Kokyukoki Mfg. Co., Ltd.Inventors: Michio Tsukamoto, Hideaki Okada
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Patent number: 7469537Abstract: A hydraulic transaxle comprises: an axle; a hydraulic pump driven by a prime mover; a hydraulic motor fluidly connected to the hydraulic pump so as to drive the axle; a bypass fluid circuit bypassing between suction and delivery ports of the hydraulic motor; a bypass valve provided in the bypass fluid circuit; a bypass operation device for selectively opening or closing the bypass valve; and a reset mechanism for closing the opened bypass valve.Type: GrantFiled: August 11, 2006Date of Patent: December 30, 2008Assignee: Kanzaki Kokyukoki Mfg. Co., Ltd.Inventors: Michio Tsukamoto, Norihiro Ishii, Hideaki Okada
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Patent number: 7455144Abstract: A transaxle apparatus comprises: a housing; a hydrostatic transmission disposed in the housing, the hydrostatic transmission including a hydraulic pump receiving power from a prime mover, a first hydraulic motor driven in response to fluid supplied from the hydraulic pump, and a center section including an inner fluid passage for fluidly connecting the first hydraulic motor to the hydraulic pump; a first axle disposed in the housing and driven by the first hydraulic motor; a hydraulic actuator disposed outside the housing so as to drive a second axle disposed outside the housing; a port opened outside the housing so as to be fluidly connected to the hydraulic actuator; and a block interposed between the center section and the port in the housing, wherein a fluid passage is disposed in the block so as to connect the port to the inner fluid passage in the center section.Type: GrantFiled: September 8, 2006Date of Patent: November 25, 2008Assignee: Kanzaki Kokyukoki Mfg. Co., Ltd.Inventors: Ryota Ohashi, Hideaki Okada, Shinichi Hirose, Hironori Sumomozawa
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Publication number: 20080283324Abstract: In a hydraulic four-wheel drive vehicle, a rear transaxle incorporates a hydraulic motor for driving rear wheels, a front transaxle incorporates a hydraulic motor for driving front wheels, and hydraulic pressure fluid pipes interposed between the front and rear transaxles are extended along at least one of left and right side plates of a frame of the vehicle.Type: ApplicationFiled: July 23, 2008Publication date: November 20, 2008Inventors: Koji IWAKI, Shiro UENO, Norihiro ISHII, Hideaki OKADA, Hiroshi SUGIMOTO, Shinichi HIROSE, Hironori SUMOMOZAWA, Fumitoshi ISHINO
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Publication number: 20080202838Abstract: An articulated vehicle with a working device has a first frame having a prime mover mounted thereon and supporting a first transaxle apparatus. The first transaxle apparatus includes an input shaft receiving power from the prime mover, a pair of first axles, and a hydrostatic transmission. The hydrostatic transmission comprises a variable hydraulic pump, a first hydraulic motor fluidly connected to the hydraulic pump via a fluid passage, and a housing with a flexible port fluidly connected to the fluid passage. The second transaxle apparatus includes a pair of second axles having different lengths and a second hydraulic motor. The second hydraulic motor is fluidly connected via piping to a directionally adjustable connection portion of the flexible port. Proximal ends of the first and second frames with respect to the vehicle are coupled to each other so that the first and second frames are rotatable around a vertical axis relative to each other when steered.Type: ApplicationFiled: March 26, 2008Publication date: August 28, 2008Inventors: Ryota OHASHI, Hideaki Okada
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Patent number: 7415823Abstract: In a hydraulic four-wheel drive vehicle, a rear transaxle incorporates a hydraulic motor for driving rear wheels, a front transaxle incorporates a hydraulic motor for driving front wheels, and hydraulic pressure fluid pipes interposed between the front and rear transaxles are extended along at least one of left and right side plates of a frame of the vehicle.Type: GrantFiled: April 12, 2006Date of Patent: August 26, 2008Assignee: Kanzaki Kokyukoki Mfg. Co., Ltd.Inventors: Koji Iwaki, Shiro Ueno, Norihiro Ishii, Hideaki Okada, Hiroshi Sugimoto, Shinichi Hirose, Hironori Sumomozawa, Fumitoshi Ishino
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Patent number: 7383913Abstract: A hydraulic transaxle including: a variable displacement hydraulic motor with a movable swash plate whose tilt angle defines a displacement of the hydraulic motor; a casing incorporating the hydraulic motor; and a mechanism for determining a range of the tilt angle of the swash plate, wherein the mechanism can fix the tilt angle of the swash plate so as to set the hydraulic motor in a fixed displacement type. A vehicle includes the transaxles for driving respective axles wherein each of the transaxles can select whether the displacement of its hydraulic motor is variable or fixed.Type: GrantFiled: September 2, 2004Date of Patent: June 10, 2008Assignee: Kanzaki Kokyukoki Mfg. Co., Ltd.Inventors: Michio Tsukamoto, Hideaki Okada
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Publication number: 20080129108Abstract: An axle driving system which houses in a housing thereof a hydrostatic transmission, axles, and a driving gear train for connecting output means of the hydraulic transmission and axles, so as to transmit power from a driving source to the hydrostatic transmission and to change the speed, thereby driving the axles. A first chamber therein contains the hydrostatic transmission and a second chamber therein contains the driving gear train. Both the first and second chambers are independent of each other so as to prevent a foreign object, such as iron powder produced in the driving gear train, from entering the hydrostatic transmission. The system includes an L-like-shaped center section on which the hydrostatic transmission is offset such that an imaginary plane which includes a motor mounting surface passes in proximity to the axis of a pump shaft. The pump shaft is disposed perpendicular to the axles. The motor shaft is disposed in parallel thereto.Type: ApplicationFiled: February 12, 2008Publication date: June 5, 2008Inventors: Robert ABEND, Hideaki Okada, Ryota Ohashi
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Patent number: 7363759Abstract: An articulated vehicle with a working device has a first frame having a prime mover mounted thereon and supporting a first transaxle apparatus. The first transaxle apparatus includes an input shaft receiving power from the prime mover, a pair of first axles, and a hydrostatic transmission. The hydrostatic transmission comprises a variable hydraulic pump, a first hydraulic motor fluidly connected to the hydraulic pump via a fluid passage, and a housing with a flexible port fluidly connected to the fluid passage. The second transaxle apparatus includes a pair of second axles having different lengths and a second hydraulic motor. The second hydraulic motor is fluidly connected via piping to a directionally adjustable connection portion of the flexible port. Proximal ends of the first and second frames with respect to the vehicle are coupled to each other so that the first and second frames are rotatable around a vertical axis relative to each other when steered.Type: GrantFiled: June 30, 2005Date of Patent: April 29, 2008Assignee: Kanzaki Kokyukoki Mfg. Co., Ltd.Inventors: Ryota Ohashi, Hideaki Okada
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Patent number: 7357750Abstract: A transaxle comprising a transmission, a pair of coaxial axles, a deceleration assembly for decreasing output rotational speed of the transmission, a differential assembly for transmitting power from the deceleration assembly to the pair of axles, and a common housing incorporating the transmission. The differential assembly includes a pair of gear train units disposed on the respective axles, and a bull gear for receiving output rotation of the deceleration assembly. Each of the gear train units includes a sun gear fixed on each of the axles, a holder relatively rotatably provided on each of the axles, and a planetary gear supported by the holder to mesh with the sun gear. The holders of the pair of gear train units are symmetrical with respect to a surface perpendicular to the pair of axles and joined to each other through the surface, and integrally fitted together in the bull common gear.Type: GrantFiled: April 20, 2006Date of Patent: April 15, 2008Assignee: Kanzaki Kokyukoki Mfg. Co., Ltd.Inventor: Hideaki Okada
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Patent number: 7340891Abstract: An axle driving system which houses in a housing thereof a hydrostatic transmission, axles, and a driving gear train for connecting output means of the hydraulic transmission and axles, so as to transmit power from a driving source to the hydrostatic transmission and to change the speed, thereby driving the axles. A first chamber therein contains the hydrostatic transmission and a second chamber therein contains the driving gear train. Both the first and second chambers are independent of each other so as to prevent a foreign object, such as iron powder produced in the driving gear train, from entering the hydrostatic transmission. The system includes an L-like-shaped center section on which the hydrostatic transmission is offset such that an imaginary plane which includes a motor mounting surface passes in proximity to the axis of a pump shaft. The pump shaft is disposed perpendicular to the axles. The motor shaft is disposed in parallel thereto.Type: GrantFiled: May 31, 2007Date of Patent: March 11, 2008Assignees: Kanzaki Kokyukoki Mfg. Co., Ltd., Tuff Torq Corp.Inventors: Robert Abend, Hideaki Okada, Ryota Ohashi
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Publication number: 20080053734Abstract: A hydraulic driving vehicle comprises front and rear transaxles incorporating respective hydraulic motors, and a pump unit separated from the front and rear transaxles. The pump unit incorporates a hydraulic pump having a pump shaft. A hydraulic circuit is formed by piping between the pump unit and the front and rear transaxles so as to circulate hydraulic fluid between the hydraulic pump and the hydraulic motors. A reservoir tank of the hydraulic fluid is connected to the hydraulic circuit by piping. A first cooling fan blowing air away from the pump unit and a second cooling fan blowing air toward the pump unit are disposed oppositely to each other with respect to the pump unit and drivingly connected to the pump shaft. At least a pipe for the piping of the hydraulic circuit and the reservoir tank passes an area blown by each of the first and second cooling fans.Type: ApplicationFiled: October 30, 2007Publication date: March 6, 2008Inventors: Michio Tsukamoto, Hideaki Okada