Patents by Inventor Yoshitaka Oota
Yoshitaka Oota 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: 11837818Abstract: The electrical power unit is provided with: a power unit body; an electrical component for driving the power unit body; and a connecting terminal which is disposed at the tip end of an electrically conductive path member extending from the power unit body and connectable to the electrical component. The connecting terminal is provided detachably to an attaching portion of the power unit body.Type: GrantFiled: March 25, 2020Date of Patent: December 5, 2023Assignee: HONDA MOTOR CO., LTD.Inventors: Naoki Matsunaga, Fumiyoshi Kambara, Yoshitaka Oota, Keisuke Muraoka
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Patent number: 11533848Abstract: A lawn mower includes a blade, a motor connected to the blade, and a housing storing the blade in the housing and is configured to mow grass underneath the housing. The lawn mower includes a grass container to contain the mowed grass and a connecting member that connects the housing to the grass container. The housing is provided with a ceiling opening communicating with a flow path inside the connecting member. The ceiling opening overlaps with a region corresponding to a rotation range, of the blade, projected upward along a drive shaft.Type: GrantFiled: June 30, 2020Date of Patent: December 27, 2022Assignee: HONDA MOTOR CO., LTD.Inventors: Fumio Minami, Takuya Matsumoto, Yoshitaka Oota, Shota Tanabe
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Publication number: 20220166162Abstract: The electrical power unit is provided with: a power unit body; an electrical component for driving the power unit body; and a connecting terminal which is disposed at the tip end of an electrically conductive path member extending from the power unit body and connectable to the electrical component. The connecting terminal is provided detachably to an attaching portion of the power unit body.Type: ApplicationFiled: March 25, 2020Publication date: May 26, 2022Inventors: Naoki MATSUNAGA, Fumiyoshi KAMBARA, Yoshitaka OOTA, Keisuke MURAOKA
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Patent number: 11337369Abstract: To enable the rotational speed of the cutter blade to be set variably and to allow the operation therefor to be performed with ease and accuracy, multiple switches (74, 76) for setting the rotational speed of the cutter blade electric motor (6) to mutually different rotational speeds, and multiple operation buttons (78, 80) provided for the respective switches (74, 76) are included on a handle (20), wherein the operation buttons (78, 80) have operation parts (78A, 80A) provided with mutually different sizes.Type: GrantFiled: November 17, 2017Date of Patent: May 24, 2022Assignee: HONDA MOTOR CO., LTD.Inventors: Mai Kurihara, Yoshitaka Oota, Fumiya Isono, Yoshihiro Takahashi
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Publication number: 20210000012Abstract: A lawn mower includes a blade, a motor connected to the blade, and a housing storing the blade in the housing and is configured to mow grass underneath the housing. The lawn mower includes a grass container to contain the mowed grass and a connecting member that connects the housing to the grass container. The housing is provided with a ceiling opening communicating with a flow path inside the connecting member. The ceiling opening overlaps with a region corresponding to a rotation range, of the blade, projected upward along a drive shaft.Type: ApplicationFiled: June 30, 2020Publication date: January 7, 2021Inventors: Fumio Minami, Takuya Matsumoto, Yoshitaka Oota, Shota Tanabe
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Publication number: 20200375103Abstract: To enable the rotational speed of a cutter blade to be set variably and to allow the operation therefor to be performed with ease and accuracy, multiple switches (74, 76) for setting the rotational speed of the cutter blade electric motor (6) to mutually different rotational speeds, and multiple operation buttons (78, 80) provided for the respective switches (74, 76) are provided on a handle (20), wherein the operation buttons (78, 80) have operation parts (78A, 80A) provided with mutually different sizes.Type: ApplicationFiled: November 17, 2017Publication date: December 3, 2020Inventors: Mai KURIHARA, Yoshitaka OOTA, Fumiya ISONO, Yoshihiro TAKAHASHI
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Patent number: 10653062Abstract: In one aspect, electric power equipment includes: a horizontally extending left rotary shaft operably connected with a cutter blade operation lever; a horizontally extending right rotary shaft operably connected with a travel operation lever; and a cutter blade on/off switch and a potentiometer for setting a travel speed arranged at a laterally central position substantially between the left and right rotary shafts, such that the cutter blade on/off switch is operated by the left rotary shaft and the potentiometer is operated by the right rotary shaft.Type: GrantFiled: November 21, 2017Date of Patent: May 19, 2020Assignee: Honda Motor Co., Ltd.Inventors: Yoshitaka Oota, Mai Kurihara, Fumiya Isono
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Patent number: 10631455Abstract: In one aspect, power equipment includes a cutter blade operation lever, a left rotary shaft, an operated member operated by the left rotary shaft to control driving of a cutter blade, and a releasable engagement mechanism provided between the left rotary shaft and the cutter blade operation lever. The releasable engagement mechanism is configured to release a force transmitting engagement between the cutter blade operation lever and the left rotary shaft to allow the cutter blade operation lever to rotate relative to the left rotary shaft when an excessive force is applied to the cutter blade operation lever in a direction to rotate the left rotary shaft beyond a normal rotational angle range.Type: GrantFiled: November 21, 2017Date of Patent: April 28, 2020Assignee: Honda Motor Co., Ltd.Inventor: Yoshitaka Oota
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Publication number: 20180146619Abstract: In one aspect, electric power equipment includes: a horizontally extending left rotary shaft operably connected with a cutter blade operation lever; a horizontally extending right rotary shaft operably connected with a travel operation lever; and a cutter blade on/off switch and a potentiometer for setting a travel speed arranged at a laterally central position substantially between the left and right rotary shafts, such that the cutter blade on/off switch is operated by the left rotary shaft and the potentiometer is operated by the right rotary shaft.Type: ApplicationFiled: November 21, 2017Publication date: May 31, 2018Inventors: Yoshitaka OOTA, Mai KURIHARA, Fumiya ISONO
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Publication number: 20180146617Abstract: In one aspect, power equipment includes a cutter blade operation lever, a left rotary shaft, an operated member operated by the left rotary shaft to control driving of a cutter blade, and a releasable engagement mechanism provided between the left rotary shaft and the cutter blade operation lever. The releasable engagement mechanism is configured to release a force transmitting engagement between the cutter blade operation lever and the left rotary shaft to allow the cutter blade operation lever to rotate relative to the left rotary shaft when an excessive force is applied to the cutter blade operation lever in a direction to rotate the left rotary shaft beyond a normal rotational angle range.Type: ApplicationFiled: November 21, 2017Publication date: May 31, 2018Inventor: Yoshitaka Oota
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Patent number: 7775194Abstract: An automatic residual fuel vent device for a carburetor, the device including a fuel supply passage (15) connecting a fuel tank (TF) and a float chamber (10), a negative pressure passage (17) connecting an intake passage (8) and a negative pressure operating chamber (53) of a diaphragm pump (PD), a fuel vent passage (16) connecting the float chamber (10) and the fuel tank (TF), a single changeover cock (CO) provided so as to straddle the fuel supply passage (15) and the negative pressure passage (17), a negative pressure surge tank (TS) provided in the negative pressure passage (17), and the diaphragm pump (PD), which is connected to the fuel vent passage (16) and is operated by negative pressure of the negative pressure surge tank (TS), residual fuel of the float chamber (10) being returned to the fuel tank (TF) by the diaphragm pump (PD) operated by negative pressure from the negative pressure surge tank (TS) in accordance with the changing over of the changeover cock (CO).Type: GrantFiled: July 31, 2007Date of Patent: August 17, 2010Assignee: Honda Motor Co., Ltd.Inventors: Masakatsu Kono, Keiji Iino, Yoshitaka Oota
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Publication number: 20090308357Abstract: An automatic residual fuel vent device for a carburetor, the device including a fuel supply passage (15) connecting a fuel tank (TF) and a float chamber (10), a negative pressure passage (17) connecting an intake passage (8) and a negative pressure operating chamber (53) of a diaphragm pump (PD), a fuel vent passage (16) connecting the float chamber (10) and the fuel tank (TF), a single changeover cock (CO) provided so as to straddle the fuel supply passage (16) and the negative pressure passage (17), a negative pressure surge tank (TS) provided in the negative pressure passage (17), and the diaphragm pump (PD), which is connected to the fuel vent passage (16) and is operated by negative pressure of the negative pressure surge tank (TS), residual fuel of the float chamber (10) being returned to the fuel tank (TF) by the diaphragm pump (PD) operated by negative pressure from the negative pressure surge tank (TS) in accordance with the changing over of the changeover cock (CO).Type: ApplicationFiled: July 31, 2007Publication date: December 17, 2009Applicant: Honda Motor Co., LtdInventors: Masakatsu Kono, Keiji Iino, Yoshitaka Oota
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Patent number: 7040193Abstract: Ball member is provided between a ball retaining member provided integrally with a driving rotational member and opposed axial end portions of left and right drive shafts, and a selection can be made as necessary between a non-differential operation mode where the drive shafts rotate substantially equally and a differential operation mode where the drive shafts rotate differentially. The retaining member has a through-hole portion to receive part of the ball member. Shift member is slidably fitted over the retaining member and includes a ball-restricting portion of an inner diameter generally equal to an outer diameter of the retaining member and a ball-releasing portion having a greater inner diameter than the restricting portion. Power-transmitting portions are provided on the opposed axial ends with which the ball member is engageable to transmit the driving power.Type: GrantFiled: June 8, 2004Date of Patent: May 9, 2006Assignee: Honda Motor Co., Ltd.Inventor: Yoshitaka Oota
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Patent number: 7000707Abstract: A differential device has a power-transmitting member mounted to undergo rotation in forward and reverse directions about a central rotational axis and to undergo linear movement in a direction along the central rotational axis. The power-transmitting member has meshing claws each having an inclined surface. A pair of driven shafts are mounted to undergo rotation about the central axis. A pair of rotational driven members have meshing claws confronting and for meshing engagement with the meshing claws of the power-transmitting member. When the power-transmitting member rotates to transmit rotational driving power to the driven members, force components acting on contacting surfaces of the meshing claws of the power-transmitting members and the driven members displace the driven members in an axial outward direction away from the power-transmitting member to define therebetween a space to allow axial movement of the power-transmitting member within the space.Type: GrantFiled: June 8, 2004Date of Patent: February 21, 2006Assignee: Honda Motor Co., Ltd.Inventor: Yoshitaka Oota
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Patent number: 6913557Abstract: In order to minimize unwanted corotation, a gear support member is in the shape of a flat disk and has an outer diameter greater than the pitch circle of a ring gear. Further, a surface level of lubricating oil stored in a casing is set to be below the ring gear, but above the gear support member. Furthermore, a resilient clip is resiliently fitted on an output shaft and gear support member, and the resilient clip has at least one end supported by the casing. In addition, the casing has, on its bottom, a frictional surface for sliding contact with the lower surface of the gear support member.Type: GrantFiled: November 13, 2003Date of Patent: July 5, 2005Assignee: Honda Motor Co., Ltd.Inventors: Susumu Ohkubo, Nobuchika Katagiri, Yoshitaka Oota
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Patent number: 6860334Abstract: A walk-behind tiller has a body and a pair of wheels mounted on the body for undergoing rotation to cause the walk-behind tiller to undergo travelling along a ground surface. A tilling device is mounted on the body for undergoing a first movement operation in which the tilling device travels along the ground surface while the tilling device is disposed in spaced-apart relation to the ground surface, a second movement operation in which the tilling device tills the ground, and a third movement operation in which the tilling device is maintained generally horizontal to the ground surface.Type: GrantFiled: September 25, 2003Date of Patent: March 1, 2005Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Nobuo Yamazaki, Keiji Iino, Fumiyoshi Kanbara, Yoshitaka Oota
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Publication number: 20040256120Abstract: During forward rotation of a power-transmitting member, either engagement between left meshing claws of the transmitting member and a left driven member or engagement between right meshing claws of the transmitting member and a right driven member is cancelled, through axial movement of the left or right driven member away from the transmitting member, when a difference between loads acting on the engagement between the left meshing claws and acting on the engagement between the right meshing claws has exceeded a reference value. During reverse rotation of the transmitting member, both the engagement between the left meshing claws and the engagement between the right meshing claws are constantly maintained. When necessary, a claw control mechanism compulsorily keeps the engagement between the left meshing claws and between the right meshing claws.Type: ApplicationFiled: June 8, 2004Publication date: December 23, 2004Inventor: Yoshitaka Oota
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Publication number: 20040250649Abstract: Ball member is provided between a ball retaining member provided integrally with a driving rotational member and opposed axial end portions of left and right drive shafts, and a selection can be made as necessary between a non-differential operation mode where the drive shafts rotate substantially equally and a differential operation mode where the drive shafts rotate differentially. The retaining member has a through-hole portion to receive part of the ball member. Shift member is slidably fitted over the retaining member and includes a ball-restricting portion of an inner diameter generally equal to an outer diameter of the retaining member and a ball-releasing portion having a greater inner diameter than the restricting portion. Power-transmitting portions are provided on the opposed axial ends with which the ball member is engageable to transmit the driving power.Type: ApplicationFiled: June 8, 2004Publication date: December 16, 2004Inventor: Yoshitaka Oota
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Publication number: 20040142788Abstract: In order to minimize unwanted corotation, a gear support member is in the shape of a flat disk and has an outer diameter greater than the pitch circle of a ring gear. Further, a surface level of lubricating oil stored in a casing is set to be below the ring gear, but above the gear support member. Furthermore, a resilient clip is resiliently fitted on an output shaft and gear support member, and the resilient clip has at least one end supported by the casing. In addition, the casing has, on its bottom, a frictional surface for sliding contact with the lower surface of the gear support member.Type: ApplicationFiled: November 13, 2003Publication date: July 22, 2004Inventors: Susumu Ohkubo, Nobuchika Katagiri, Yoshitaka Oota
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Publication number: 20040140108Abstract: A walk-behind tiller having a loop-shaped handle is provided. An operating portion of a rear portion of the handle includes left and right horizontal grips, left and right rising portions and a cross portion interposed between the rear ends of the rising portions. For holding the tiller substantially horizontally, the left and right horizontal portions are held. For tilling operations, the left and right rising portions are held. For pushing down the handle, the cross portion is held.Type: ApplicationFiled: September 25, 2003Publication date: July 22, 2004Inventors: Nobuo Yamazaki, Keiji Iino, Fumiyoshi Kanbara, Yoshitaka Oota