Patents by Inventor Terunobu Yoshioka
Terunobu Yoshioka 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: 11796041Abstract: [Problem] To provide a planetary gear assembly that, while increasing the speed change range of a power-split stepless transmission formed in cooperation a stepless transmission, can reduce the overall size of the power-split stepless transmission. [Solution] The planetary gear assembly according to the present invention includes: a cylindrical transmission shaft, an output shaft inserted into the transmission shaft, first and second planetary gear mechanisms each having a first sun gear supported to the transmission shaft without a relative rotation about an axial line, first and second clutch mechanisms that are placed coaxially with the transmission shaft, and that engage and disengage a power transmission of power to standard rotary speed power input units of the first and second planetary gear mechanisms, and a connection member extrapolated to the transmission shaft with a free relative rotation about an axial line.Type: GrantFiled: February 14, 2023Date of Patent: October 24, 2023Assignee: KANZAKI KOKYUKOKI MFG. CO., LTD.Inventors: Terunobu Yoshioka, Koji Iwaki
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Publication number: 20230258254Abstract: [Problem] To provide a planetary gear assembly that, while increasing the speed change range of a power-split stepless transmission formed in cooperation a stepless transmission, can reduce the overall size of the power-split stepless transmission. [Solution] The planetary gear assembly according to the present invention includes: a cylindrical transmission shaft, an output shaft inserted into the transmission shaft, first and second planetary gear mechanisms each having a first sun gear supported to the transmission shaft without a relative rotation about an axial line, first and second clutch mechanisms that are placed coaxially with the transmission shaft, and that engage and disengage a power transmission of power to standard rotary speed power input units of the first and second planetary gear mechanisms, and a connection member extrapolated to the transmission shaft with a free relative rotation about an axial line.Type: ApplicationFiled: February 14, 2023Publication date: August 17, 2023Inventors: Terunobu YOSHIOKA, Koji IWAKI
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Patent number: 10774917Abstract: A transmission including a hydraulic unit (advancing clutch, backing clutch, constant velocity clutch, acceleration clutch, and PTO clutch) which operates with a working fluid; and a housing (transmission housing) which accommodates or supports the hydraulic unit 321, 322, 341, 342, 351). The housing structures a passage for guiding a working fluid to the hydraulic unit. In the housing, an oil chamber is formed on an attachment seating surface of the hydraulic pump, and the oil chamber is plugged by the hydraulic pump.Type: GrantFiled: March 24, 2016Date of Patent: September 15, 2020Assignee: YANMAR POWER TECHNOLOGY CO., LTD.Inventor: Terunobu Yoshioka
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Patent number: 10351184Abstract: A working vehicle where a front axle case is supported by two front axle brackets includes a body flame formed by disposing beams at a prescribed interval, by welding reinforced plates to plate faces of the beams which face to each other, and by welding both end parts of one of the front axle brackets to the reinforced plates; and a front hitch formed by welding both end parts of the other front axle bracket to both end parts of a plate member which are bent. The front hitch is attached to the body flame such that the two front axle brackets are opposed to each other.Type: GrantFiled: September 29, 2014Date of Patent: July 16, 2019Assignee: YANMAR CO., LTD.Inventors: Masahiro Hanafusa, Taihei Daiyakuji, Terunobu Yoshioka
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Publication number: 20180142780Abstract: A transmission (3) including a hydraulic unit (advancing clutch (321), backing clutch (322), constant velocity clutch (341), acceleration clutch (342), and PTO clutch (351)) which operates with a working fluid; and a housing (transmission housing (7)) which accommodates or supports the hydraulic unit 321, 322, 341, 342, 351). The housing (7) structures a passage for guiding a working fluid to the hydraulic unit (321, 322, 341, 342, 351). In the housing (7), an oil chamber (73G) is formed on an attachment seating surface (73P) of the hydraulic pump (84), and the oil chamber (73G) is plugged by the hydraulic pump (84).Type: ApplicationFiled: March 24, 2016Publication date: May 24, 2018Applicant: Yanmar Co., Ltd.Inventor: Terunobu YOSHIOKA
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Publication number: 20180142774Abstract: It is an object of the present invention to provide a transmission convertible to various specifications while ensuring compatibility of housing. It is further an object of the present invention to provide a transmission that can restrain vibration of a hydraulic unit, and that can downsize the housing. As a solution to the problem, a transmission (3) includes: a hydraulic unit which operates with a working fluid; an input shaft (312, 372) configured to transmit rotary power to the hydraulic unit; an output shaft (313, 373) configured to transmit rotary power from the hydraulic unit; and a housing (7) configured to accommodate the hydraulic unit, the input shaft (312, 372), and the output shaft (313, 373), wherein the transmission is capable of selecting a continuously variable transmission (311) or a connection/disconnection device (371) as the hydraulic unit.Type: ApplicationFiled: March 23, 2016Publication date: May 24, 2018Applicant: Yammar Co., Ltd.Inventor: Terunobu YOSHIOKA
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Publication number: 20160236730Abstract: A working vehicle where a front axle case is supported by two front axle brackets includes a body flame formed by disposing beams at a prescribed interval, by welding reinforced plates to plate faces of the beams which face to each other, and by welding both end parts of one of the front axle brackets to the reinforced plates; and a front hitch formed by welding both end parts of the other front axle bracket to both end parts of a plate member which are bent. The front hitch is attached to the body flame such that the two front axle brackets are opposed to each other.Type: ApplicationFiled: September 29, 2014Publication date: August 18, 2016Inventors: Masahiro HANAFUSA, Taihei DAIYAKUJI, Terunobu YOSHIOKA
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Patent number: 9334934Abstract: An input pulley, an output pulley, a belt wound across the pulleys, a hydraulic cylinder provided to the input pulley, and a hydraulic servo mechanism that controls an operation of the hydraulic cylinder are provided. The hydraulic servo mechanism includes: a valve chest facing an input side movable sheave; a servo spool slidably inserted in the valve chest, and switches an oil passage in communication with a hydraulic chamber of the hydraulic cylinder; and a feedback spool disposed in such a manner that one end comes into contact with the input side movable sheave a bearing disposed in between, and configured to switch the oil passage to maintain a slid position of the input side movable sheave at a position corresponding to a slid position of the servo spool.Type: GrantFiled: July 8, 2011Date of Patent: May 10, 2016Assignee: YANMAR CO., LTD.Inventors: Fumitoshi Ishino, Takeshi Ouchida, Terunobu Yoshioka, Koji Iwaki
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Publication number: 20140378251Abstract: An input pulley, an output pulley, a belt wound across the pulleys, a hydraulic cylinder provided to the input pulley, and a hydraulic servo mechanism that controls an operation of the hydraulic cylinder are provided. The hydraulic servo mechanism includes: a valve chest facing an input side movable sheave; a servo spool slidably inserted in the valve chest, and switches an oil passage in communication with a hydraulic chamber of the hydraulic cylinder; and a feedback spool disposed in such a manner that one end comes into contact with the input side movable sheave a bearing disposed in between, and configured to switch the oil passage to maintain a slid position of the input side movable sheave at a position corresponding to a slid position of the servo spool.Type: ApplicationFiled: July 8, 2011Publication date: December 25, 2014Applicant: YANMAR CO., LTD.Inventors: Fumitoshi Ishino, Takeshi Ouchida, Terunobu Yoshioka, Koji Iwaki