Patents by Inventor Takehiro OTA
Takehiro OTA 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).
-
Publication number: 20220074476Abstract: A hydrostatic transaxle includes: a casing; a hydraulic continuously variable transmission; and an oil filter that includes a filter body for filtering the hydraulic oil and a filter holding member configured to guide clean oil filtered in the filter body to a suction oil reservoir, in which the filter holding member includes a filter installation portion for installing the filter body, and a suction oil reservoir provided at a position different from the filter installation portion, and the filter installation portion and the suction oil reservoir are configured to be separable from each other and be couplable to each other to freely flow.Type: ApplicationFiled: November 8, 2021Publication date: March 10, 2022Inventors: Takehiro OTA, Michio TSUKAMOTO, Koji KIYOOKA, Mai TERADA, Koji IWAKI
-
Patent number: 10871178Abstract: A transaxle includes a braking unit disposed in the transaxle casing, the braking unit configured to brake the axle. The braking unit includes an operating shaft projecting from one side of the transaxle casing. A link mechanism of the transaxle is includes a relay arm rotatably pivoted on a shaft provided on the one side of the transaxle casing, a brake arm fixed to the operating shaft, the brake arm being configured to rotate between a braking position and an unbraking position of the braking unit together with the operating shaft, a first link configured to manipulate the relay arm, and a second link configured to join the relay arm to the brake arm. The link mechanism constrains motion of the brake arm through the second link such that an external force on the braking unit cannot cause an unexpected release from the braking state.Type: GrantFiled: March 25, 2019Date of Patent: December 22, 2020Assignee: Kanzaki Kokyukoki Mfg. Co., Ltd.Inventors: Jun Matsuura, Michio Tsukamoto, Hiroshi Sugimoto, Masaru Iida, Takehiro Ota
-
Patent number: 10865872Abstract: A hydraulic transaxle includes a transaxle casing including an upper transaxle housing and a lower casing, hydrostatic transmission (“HST”), and an axle. The HST has a hydraulic pump and a hydraulic motor that are fluidly connected to each other. The hydraulic motor has a motor shaft that is drivingly connected to the axle through a reduction gear train that is disposed between the hydraulic pump and the axle. Reduction gear train has a gear shaft supported by the upper transaxle housing via a ball bearing. At least a part of the upper transaxle housing is formed by a gear top cover made of metal and covering the reduction gear train. Ball bearing is supported by the upper transaxle housing and the gear top cover.Type: GrantFiled: April 25, 2019Date of Patent: December 15, 2020Assignee: KANZAKI KOKYUKOKI MFG. CO., LTD.Inventors: Hiroshi Sugimoto, Takehiro Ota, Toshifumi Yasuda
-
Patent number: 10570893Abstract: A housing of a hydraulic pump is configured to have a servo unit detachably attached thereto so as to control tilt direction and angle of its movable swash plate. A port block is formed therein with a pair of main ports and, and a pair of main fluid passages and fluidly connecting respective main ports and to cylinders in its cylinder block. Main ports are used to have respective external pipes connected thereto so as to fluidly connect the hydraulic pump to a hydraulic motor disposed outside of the hydraulic pump, thereby constituting a hydrostatic transmission.Type: GrantFiled: May 26, 2016Date of Patent: February 25, 2020Assignee: KANZAKI KOKYUKOKI MFG. CO., LTD.Inventors: Toshifumi Yasuda, Daisuke Murashima, Takehiro Ota
-
Publication number: 20190249762Abstract: A hydraulic transaxle includes a transaxle casing including an upper transaxle housing and a lower casing, hydrostatic transmission (“HST”), and an axle. The HST has a hydraulic pump and a hydraulic motor that are fluidly connected to each other. The hydraulic motor has a motor shaft that is drivingly connected to the axle through a reduction gear train that is disposed between the hydraulic pump and the axle. Reduction gear train has a gear shaft supported by the upper transaxle housing via a ball bearing. At least a part of the upper transaxle housing is formed by a gear top cover made of metal and covering the reduction gear train. Ball bearing is supported by the upper transaxle housing and the gear top cover.Type: ApplicationFiled: April 25, 2019Publication date: August 15, 2019Inventors: Hiroshi Sugimoto, Takehiro Ota, Toshifumi Yasuda
-
Publication number: 20190219074Abstract: A transaxle includes a braking unit disposed in the transaxle casing, the braking unit configured to brake the axle. The braking unit includes an operating shaft projecting from one side of the transaxle casing. A link mechanism of the transaxle is includes a relay arm rotatably pivoted on a shaft provided on the one side of the transaxle casing, a brake arm fixed to the operating shaft, the brake arm being configured to rotate between a braking position and an unbraking position of the braking unit together with the operating shaft, a first link configured to manipulate the relay arm, and a second link configured to join the relay arm to the brake arm. The link mechanism constrains motion of the brake arm through the second link such that an external force on the braking unit cannot cause an unexpected release from the braking state.Type: ApplicationFiled: March 25, 2019Publication date: July 18, 2019Inventors: Jun MATSUURA, Michio TSUKAMOTO, Hiroshi SUGIMOTO, Masaru IIDA, Takehiro OTA
-
Publication number: 20170284510Abstract: A dual clutch transmission comprises a housing formed therein with a gear chamber incorporating an odd-numbered speed gear train group and an even-numbered speed gear train group. An end of the input shaft is connected to an engine, and a cover is detachably attached to the housing opposite the end of the input shaft so as to define a clutch chamber divided from the gear chamber. A first clutch for the odd-numbered speed gear train group and a second clutch for the even-numbered speed gear train group are disposed in the clutch chamber. Fluid passages for supplying hydraulic fluid to the first and second clutches are formed in the cover.Type: ApplicationFiled: March 29, 2017Publication date: October 5, 2017Inventors: Koji IWAKI, Jun MATSUURA, Nobuhiro SHIMOBAYASHI, Daisuke MURASHIMA, Tetsuya KAWATANI, Shuji NISHIMOTO, Tatsuya KAMADA, Takehiro OTA
-
Publication number: 20160348654Abstract: A housing of a hydraulic pump is configured to have a servo unit detachably attached thereto so as to control tilt direction and angle of its movable swash plate. A port block is formed therein with a pair of main ports and, and a pair of main fluid passages and fluidly connecting respective main ports and to cylinders in its cylinder block. Main ports are used to have respective external pipes connected thereto so as to fluidly connect the hydraulic pump to a hydraulic motor disposed outside of the hydraulic pump, thereby constituting a hydrostatic transmission.Type: ApplicationFiled: May 26, 2016Publication date: December 1, 2016Inventors: Toshifumi YASUDA, Daisuke MURASHIMA, Takehiro OTA