Patents by Inventor Kazunobu Yoshimura
Kazunobu Yoshimura 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: 10646986Abstract: An impact tool includes a mechanism part, a main-body housing and a grip housing. The mechanism part strikes a tool bit. The main-body housing holds the mechanism part therein. The grip housing is continuously provided to a rear portion of the main-body housing. One end portion of the grip housing is displaceably connected to the main-body housing through an elastic member, and the other end portion of the grip housing is rotatably connected to the main-body housing through a rotary joint. A center of the rotary joint is disposed on a leading end side of the impact tool with respect to a center of the elastic member, when viewed in a strike direction of the impact tool.Type: GrantFiled: June 9, 2016Date of Patent: May 12, 2020Assignee: MAX CO., LTD.Inventors: Akira Teranishi, Kazunobu Yoshimura, Kouichirou Morimura
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Publication number: 20160361809Abstract: An impact tool includes a mechanism part, a main-body housing and a grip housing. The mechanism part strikes a tool bit. The main-body housing holds the mechanism part therein. The grip housing is continuously provided to a rear portion of the main-body housing. One end portion of the grip housing is displaceably connected to the main-body housing through an elastic member, and the other end portion of the grip housing is rotatably connected to the main-body housing through a rotary joint. A center of the rotary joint is disposed on a leading end side of the impact tool with respect to a center of the elastic member, when viewed in a strike direction of the impact tool.Type: ApplicationFiled: June 9, 2016Publication date: December 15, 2016Inventors: Akira TERANISHI, Kazunobu YOSHIMURA, Kouichirou MORIMURA
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Patent number: 8726526Abstract: A portable cutting machine is provided with a cutting machine main body, a surface plate rotatably supported by the cutting machine main body, a saw blade supported by the cutting machine main body rotatably around a first axis, and a lower guard supported by the cutting machine main body rotatably around a second axis. The first axis is located on one side of the surface plate. A part of the saw blade passes through an opening portion formed to penetrate through the surface plate and is exposed to the other side of the surface plate. The part of the saw blade exposed to the other side is covered by the lower guard. The first axis is parallel to the second axis. The first axis is located closer to a side of the surface plate than the second axis.Type: GrantFiled: March 5, 2010Date of Patent: May 20, 2014Assignees: Max Co., Ltd., Ryobi Ltd.Inventors: Kazunobu Yoshimura, Tomofumi Ichiba, Takuma Nonaka, Atsuhito Okada
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Publication number: 20120011731Abstract: A portable cutting machine is provided with a cutting machine main body (3), a surface plate (6) rotatably supported by the cutting machine main body (3), a saw blade (1) supported by the cutting machine main body (3) rotatably around a first axis (O1), and a lower guard (25) supported by the cutting machine main body (3) rotatably around a second axis (O2). The first axis (O1) is located on one side of the surface plate (6). A part of the saw blade (1) passes through an opening portion (24) formed to penetrate through the surface plate (6) and is exposed to the other side of the surface plate (6). The part of the saw blade (1) exposed to the other side is covered by the lower guard (25). The first axis (O1) is parallel to the second axis (O2). The first axis (O1) is located closer to a side of the surface plate (6) than the second axis (O2).Type: ApplicationFiled: March 5, 2010Publication date: January 19, 2012Applicants: RYOBI LTD., MAX CO., LTD.Inventors: Kazunobu Yoshimura, Tomofumi Ichiba, Takuma Nonaka, Atsuhito Okada
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Publication number: 20110308095Abstract: A portable cutting machine is provided with: a cutting machine main body (3); a saw blade (1) provided rotatably with respect to the cutting machine main body (3); an electric motor (2) adapted to drive the saw blade (1); a handle (4) which is provided between the saw blade (1) and the electric motor (2) in a first direction parallel to a rotation shaft (9) of the saw blade (1) and extends in a second direction perpendicular to the first direction; a battery pack (5) adapted to drive the electric motor (2); and a surface plate (6) rotatably supported by the cutting machine main body (3). A center in the first direction of the battery pack (5) is located closer to a side of the electric motor (2) than a center in the first direction of the handle (4). The rotation shaft (9) of the saw blade (1) is located on one side of the surface plate (6). A part of the saw blade (1) passes through an opening portion (16) penetrating through the surface plate (6) and is exposed to the other side of the surface plate (6).Type: ApplicationFiled: March 5, 2010Publication date: December 22, 2011Applicants: RYOBI LTD., MAX CO., LTD.Inventors: Kazunobu Yoshimura, Tomofumi Ichiba, Takuma Nonaka, Atsuhito Okada
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Publication number: 20090051313Abstract: A battery charger capable of improving a visibility to a light emitting display portion for facilitating recognition of a charge state of a battery. The battery charger has a housing and a display unit including the light emitting portion protruding from an outer surface of the housing.Type: ApplicationFiled: March 19, 2008Publication date: February 26, 2009Inventors: Kazunobu Yoshimura, Haruhisa Fujisawa, Keita Saitou
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Patent number: 6893026Abstract: A blade attachment/detachment mechanism for detachably attaching a blade to a saber saw. An end portion of the blade is formed with a blade hole. A reciprocally movable plunger has a blade attachment end portion where a slit and a stepped hole are formed. The slit extends in a longitudinal direction of the blade, and the stepped hole extends in a direction perpendicular to the slit and intersects the slit. An engagement pin is provided in the stepped hole. The engagement pin is engageable with the blade hole to fix the blade to the plunger when the blade end is inserted into the slit. For moving the engagement pin, a knob is pivotally supported to the blade attachment end portion, and a torsion spring is provided to bias the knob in a blade attaching direction. The knob has a slanted surface in engagement with the engagement pin.Type: GrantFiled: January 9, 2003Date of Patent: May 17, 2005Assignee: Hitachi Koki Co., Ltd.Inventors: Kazunobu Yoshimura, Yuuichi Satou, Toshihiko Tachibana
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Publication number: 20030132581Abstract: A blade attachment/detachment mechanism for detachably attaching a blade to a saber saw. An end portion of the blade is formed with a blade hole. A reciprocally movable plunger has a blade attachment end portion where a slit and a stepped hole are formed. The slit extends in a longitudinal direction of the blade, and the stepped hole extends in a direction perpendicular to the slit and intersects the slit. An engagement pin is provided in the stepped hole. The engagement pin is engageable with the blade hole to fix the blade to the plunger when the blade end is inserted into the slit. For moving the engagement pin, a knob is pivotally supported to the blade attachment end portion, and a torsion spring is provided to bias the knob in a blade attaching direction. The knob has a slanted surface in engagement with the engagement pin.Type: ApplicationFiled: January 9, 2003Publication date: July 17, 2003Applicant: HITACHI KOKI CO., LTD.Inventors: Kazunobu Yoshimura, Yuuichi Satou, Toshihiko Tachibana
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Patent number: D523312Type: GrantFiled: May 27, 2005Date of Patent: June 20, 2006Assignee: Hitachi Koki Co., Ltd.Inventors: Takashi Ozawa, Masato Sakai, Yoshitaka Suzuki, Kazunobu Yoshimura
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Patent number: D544436Type: GrantFiled: July 6, 2006Date of Patent: June 12, 2007Assignee: Hitachi Koki, Co., Ltd.Inventors: Tomoyuki Kawahara, Masanori Okada, Masato Sakai, Kazunobu Yoshimura