Patents by Inventor Yasuhiro Kobiki
Yasuhiro Kobiki 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: 9714500Abstract: A wheel loader includes: a mechanical drive unit; an HST pump that feeds a hydraulic oil for travelling; an accessory hydraulic pump that feeds a hydraulic oil for a bucket; first and second hydraulic motors driven by the hydraulic oil from the HST pump; and a power combining unit configured to combine powers of the first and second hydraulic motors with a power of the mechanical drive unit, in which the mechanical drive unit is provided between an engine shaft to an output shaft with a shaft center, the power combining unit is configured to combine the power of the mechanical drive unit with the powers of the first and second hydraulic motors at a position above the output shaft, and the first and second combining gears and a gear, to which combined powers are transmitted, are disposed between the first and second hydraulic motors and the output shaft.Type: GrantFiled: April 2, 2014Date of Patent: July 25, 2017Assignee: Komatsu Ltd.Inventor: Yasuhiro Kobiki
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Patent number: 9416519Abstract: A wheel loader includes: a mechanical drive unit; a mechanical drive clutch controlling transmission/cutoff of a power in the mechanical drive unit; an HST pump driven by an engine; a hydraulic motor driven by a hydraulic oil delivered from the HST pump; a hydraulic drive unit; a hydraulic drive clutch controlling transmission/cutoff of a power in the hydraulic drive unit; a load detecting unit detecting an amount of a load; a vehicle speed sensor detecting a vehicle speed; a switching controlling unit setting a switching vehicle speed in accordance with the amount of the load; and a vehicle-body controller switching between mechanical drive state and hydraulic drive state based on the switching controlling unit. The switching controlling unit sets the switching vehicle speed at a high-speed side when the load becomes large and at a low-speed side when the load becomes small.Type: GrantFiled: April 2, 2014Date of Patent: August 16, 2016Assignee: Komatsu Ltd.Inventor: Yasuhiro Kobiki
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Publication number: 20160102445Abstract: A wheel loader includes: a mechanical drive unit; an HST pump that feeds a hydraulic oil for travelling; an accessory hydraulic pump that feeds a hydraulic oil for a bucket; first and second hydraulic motors driven by the hydraulic oil from the HST pump; and a power combining unit configured to combine powers of the first and second hydraulic motors with a power of the mechanical drive unit, in which the mechanical drive unit is provided between an engine shaft to an output shaft with a shaft center, the power combining unit is configured to combine the power of the mechanical drive unit with the powers of the first and second hydraulic motors at a position above the output shaft, and the first and second combining gears and a gear, to which combined powers are transmitted, are disposed between the first and second hydraulic motors and the output shaft.Type: ApplicationFiled: April 2, 2014Publication date: April 14, 2016Applicant: KOMATSU LTD.Inventor: Yasuhiro Kobiki
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Publication number: 20160024755Abstract: A wheel loader includes: a mechanical drive unit; a mechanical drive clutch controlling transmission/cutoff of a power in the mechanical drive unit; an HST pump driven by an engine; a hydraulic motor driven by a hydraulic oil delivered from the HST pump; a hydraulic drive unit; a hydraulic drive clutch controlling transmission/cutoff of a power in the hydraulic drive unit; a load detecting unit detecting an amount of a load; a vehicle speed sensor detecting a vehicle speed; a switching controlling unit setting a switching vehicle speed in accordance with the amount of the load; and a vehicle-body controller switching between mechanical drive state and hydraulic drive state based on the switching controlling unit. The switching controlling unit sets the switching vehicle speed at a high-speed side when the load becomes large and at a low-speed side when the load becomes small.Type: ApplicationFiled: April 2, 2014Publication date: January 28, 2016Inventor: Yasuhiro Kobiki
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Patent number: 4805704Abstract: A rotary tilling device has a cutting device having a plurality of cutters each of which is rotatably mounted on a supporting member. The cutter has a vertical portion and a lateral portion at an end of the vertical portion and has edges on both sides of the vertical and lateral portions. The cutter is held by a stopper in a tilling position when rotated in a tilling direction, and is released in a grass cutting position when rotated in the opposite direction.Type: GrantFiled: October 6, 1986Date of Patent: February 21, 1989Assignee: Kobashi Kogyo Co., Ltd.Inventors: Teruhisa Kobashi, Ichiro Kobashi, Yoshio Touki, Yasuhiro Kobiki
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Patent number: 4804047Abstract: A rotary tilling device has a cutting device having a plurality of cutters each of which is rotatably mounted by a bolt on a supporting member at a base end thereof. The cutter has a vertical portion and a lateral portion at an end of the vertical portion and has edges on both sides of the vertical and lateral portions. A stopper for receiving the cutter in a tilling position and a spring plate for resiliently holding the cutter in the tilling position are provided on the supporting member.Type: GrantFiled: November 17, 1986Date of Patent: February 14, 1989Assignee: Kobashi Kogyo Co., Ltd.Inventors: Teruhisa Kobashi, Ichiro Kobashi, Yoshio Touki, Yasuhiro Kobiki
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Patent number: 4778012Abstract: A rotary tiling device has a cutting device having a plurality of cutters each of which is mounted on a supporting member at a base end thereof in such a manner that the cutter is rotatable about a first center. The cutter has a vertical portion and a lateral portion at an end of the vertical portion and has edges on both sides of the vertical and lateral portions. The base end has an arcuated periphery about a second center. The first center is offset from the second center, so that in grass cutting operation, the arcuated periphery is positioned in a position which is further outward than its position in the soil cutting operation.Type: GrantFiled: November 17, 1986Date of Patent: October 18, 1988Assignee: Kobashi Kogyo Co., Ltd.Inventors: Teruhisa Kobashi, Ichiro Kobashi, Yoshio Touki, Yasuhiro Kobiki