Patents by Inventor Kazufumi NISHIMOTO
Kazufumi NISHIMOTO 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: 11994158Abstract: A clearance adjusting member that easily attaches and detaches without risk of falling off a pin is disclosed. A first member and a second member are coupled freely to be rotated in relation to each other by a cylindrical pin. For adjusting an axial clearance between the two members, the clearance adjusting member comprises a shim in a U or C-shape attached to the pin in the axial clearance, and a restricting means for restricting the shim while being freely releasable. A restricted piece protruding radially outward is formed on an outer circumferential edge of the shim. The restricting means includes a pair of restricting pieces spacedly arranged circumferentially on the radially outer side of the pin. When the shim is inserted towards the axial clearance, the restricted piece becomes positioned between the pair of restricting pieces and the shim is attached to the pin.Type: GrantFiled: February 13, 2020Date of Patent: May 28, 2024Assignee: Caterpillar SARLInventors: Tetsuya Koshima, Hirokazu Koga, Naoki Miyata, Toru Amaya, Kota Tatsumi, Kazufumi Nishimoto, Hiroya Ito
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Patent number: 11639738Abstract: To provide a bearing device which can ensure the sealing performance by using floating seal to eliminate the need of adding lubricant over a long term and a construction machine comprising the bearing device. The bearing device comprises a shaft. The bearing device comprises a boss portion having a bearing rotatably holding the shaft. The bearing device comprises a cylindrical collar mounted on an end part side of the shaft rather than the boss portion. The bearing device comprises a floating seal for sealing lubricant sandwiched between the boss portion and collar. The bearing device comprises a pin being inserted into the insertion holes provided in the shaft and collar and integrally fixing the shaft and collar at a position where a predetermined axial load is applied to the floating seal between the collar and boss portion. The bearing device comprises a bracket having an opening for mounting the collar.Type: GrantFiled: August 5, 2019Date of Patent: May 2, 2023Assignee: Caterpillar SARLInventors: Seiji Iijima, Naoki Miyata, Kazufumi Nishimoto, Yasunori Komatsubara, Yuma Yabuki
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Publication number: 20220178109Abstract: In a construction machine where an arm, a working attachment, and a distal end portion of an extensible cylinder are coupled via a power link and an idler link, to achieve protection of a grease feeding piping when the grease feeding piping is arranged in the idler link, and to ensure that the structure of the idler link is not complicated.Type: ApplicationFiled: March 2, 2020Publication date: June 9, 2022Applicant: Caterpillar SARLInventors: Naoki MIYATA, Kota TATSUMI, Hirokazu KOGA, Toru AMAYA, Kazufumi NISHIMOTO, Tetsuya KOSHIMA, Hiroya ITO
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Patent number: 11346394Abstract: A bearing device that includes a large-diameter section that is provided on a shaft and regulates an axial position of a collar relative to the shaft. The bearing device has a bearing that rotatably retains the shaft at a position outside of a boss section, and has a cylindrical bearing member opposed to the opposing section of the collar at one end. The bearing device includes a floating seal for sealing a lubricant which is sandwiched between the opposing section of the collar and the one end of the bearing member. The bearing device includes a mounting member mounted to the end of the shaft and positioned on the other end of the bearing member to regulate the axial position of the bearing relative to the shaft.Type: GrantFiled: August 5, 2019Date of Patent: May 31, 2022Assignee: Caterpillar SARLInventors: Seiji Iijima, Naoki Miyata, Kazufumi Nishimoto, Yasunori Komatsubara, Yuma Yabuki
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Publication number: 20220154760Abstract: To provide a clearance adjusting member that allows for easy attaching and detaching works and has no risk of falling off from a pin. A clearance adjusting member, in a pin coupling structure in which a first member and a second member are coupled freely to be rotated in relation to each other by a cylindrical pin, for adjusting an axial clearance between the first member and the second member, the clearance adjusting member comprises a shim in a U-shape or C-shape attached to the pin in the axial clearance, and a restricting means for restricting the shim so as to be freely releasable. A restricted piece protruding radially outward is formed on an outer circumferential edge of the shim. The restricting means includes a pair of restricting pieces spacedly arranged circumferentially on the radially outer side of the pin.Type: ApplicationFiled: February 13, 2020Publication date: May 19, 2022Applicant: Caterpillar SARLInventors: Tetsuya KOSHIMA, Hirokazu KOGA, Naoki MIYATA, Toru AMAYA, Kota TATSUMI, Kazufumi NISHIMOTO, Hiroya ITO
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Publication number: 20210293271Abstract: To provide a bearing device capable of ensuring sealability by a floating seal, and dispensing with an additional supply of a lubricant over a long period of time, and a construction machine equipped with the same. A bearing device includes a large-diameter section that is provided on a shaft and regulates an axial position of a collar relative to the shaft. The bearing device has a bearing that rotatably retains the shaft at a position outside of a boss section, and has a cylindrical bearing member opposed to the opposing section of the collar at one end. The bearing device includes a floating seal for sealing a lubricant which is sandwiched between the opposing section of the collar and the one end of the bearing member. The bearing device includes a mounting member mounted to the end of the shaft from the other end side of the bearing member and configured to regulate the axial position of the bearing relative to the shaft.Type: ApplicationFiled: August 5, 2019Publication date: September 23, 2021Applicant: Caterpillar SARLInventors: Seiji IIJIMA, Naoki MIYATA, Kazufumi NISHIMOTO, Yasunori KOMATSUBARA, Yuma YABUKI
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Publication number: 20210293276Abstract: To provide a bearing device which can ensure the sealing performance by using floating seal to eliminate the need of adding lubricant over a long term and a construction machine comprising the bearing device. The bearing device comprises a shaft. The bearing device comprises a boss portion having a bearing rotatably holding the shaft. The bearing device comprises a cylindrical collar mounted on an end part side of the shaft rather than the boss portion. The bearing device comprises a floating seal for sealing lubricant sandwiched between the boss portion and collar. The bearing device comprises a pin being inserted into the insertion holes provided in the shaft and collar and integrally fixing the shaft and collar at a position where a predetermined axial load is applied to the floating seal between the collar and boss portion. The bearing device comprises a bracket having an opening for mounting the collar.Type: ApplicationFiled: August 5, 2019Publication date: September 23, 2021Applicant: Caterpillar SARLInventors: Seiji IIJIMA, Naoki MIYATA, Kazufumi NISHIMOTO, Yasunori KOMATSUBARA