Patents Assigned to Kubota Ltd.
  • Wheel tread adjusting apparatus
    Patent number: 4621872
    Abstract: There is disposed a wheel tread adjusting apparatus for a vehicle having a main axle case supported by a vehicle body and slidable cases mounted in right and left ends of the main axle case, respectively, the slidable cases being slidable transversely of the vehicle toward and away from each other. A fixing plate extends between the main axle case and each of the slidable cases, and is secured to one of the two cases. The fixing plate is positionally adjustably lockable to the other of the two cases.
    Type: Grant
    Filed: April 23, 1985
    Date of Patent: November 11, 1986
    Assignee: Kubota, Ltd.
    Inventors: Toshiyuki Yotsumoto, Tomeo Umemoto
  • Load cell having flameproof function
    Patent number: 4619147
    Abstract: A load cell (24, 31, 40, 51, 58, 62, 64, 68, 92, 96, 97) having flame proof function has a load cell body (2) and a flame proof enclosure (25, 33, 36, 41, 69, 78) for covering at least a strain gage carrying portion (5) of the load cell body (2). A load receiving portion (4) connected with the strain gage carrying portion (5) for transmitting a load to the strain gage carrying portion, projects outwardly from the flame proof enclosure. A gap (30) is defined between a first surface of the load cell body and a second surface of the enclosure, so that the load receiving portion (4) and the strain gage carrying portion (5) are freely movable relative to the enclosure. The size of the gap width W.sub.1 and of the gap length L.sub.1 are selected for realizing the flame proof function.
    Type: Grant
    Filed: September 10, 1984
    Date of Patent: October 28, 1986
    Assignee: Kubota Ltd.
    Inventors: Shigeo Yoshimura, Yoshiaki Shimada, Hitoshi Kimura
  • Combine harvester machine
    Patent number: 4617787
    Abstract: In a combine harvester machine, the front conveyor is disposed such that the imaginary extending surface of its placing and conveying surface passes through or adjacent to the peripheral lower end of an auger equipped drum located backward of the conveyor.
    Type: Grant
    Filed: October 4, 1985
    Date of Patent: October 21, 1986
    Assignee: Kubota, Ltd.
    Inventors: Jutaro Eguchi, Tetsuichi Odahara, Junzo Sukenari
  • Earth moving vehicle
    Patent number: 4616872
    Abstract: There is disclosed an earth moving vehicle having a pressure oil tank and a battery arranged longitudinally along one lateral side of a swivel deck. A driver's cabin of the vehicle includes covers for covering the battery and the pressure oil tank. The covers have top surfaces at a certain height to provide a large space for the driver.
    Type: Grant
    Filed: March 14, 1985
    Date of Patent: October 14, 1986
    Assignee: Kubota, Ltd.
    Inventors: Takashima Akira, Masahiko Kobayashi, Hitoo Nasu, Yoshishiro Okida, Kazuhiko Tsuji
  • Reversible rotary cultivating apparatus
    Patent number: 4615395
    Abstract: Cultivating tines, each having opposite cutting edge portions, are pivotably supported by mount brackets on a tine shaft reversibly rotatable about a horizontal lateral axis. One of the edge portions of each tine is positionable in a position rearward with respect to the direction of forward rotation, while the other edge portion is positionable in a position rearward with respect to the direction of reverse rotation. The edge portions differ in upstanding posture when positioned for rotation in the intended direction. The curved edge line of the reverse-rotation edge portion is more upstanding than that of the forward-rotation edge portion when coming into contact with the ground.
    Type: Grant
    Filed: August 9, 1984
    Date of Patent: October 7, 1986
    Assignee: Kubota, Ltd.
    Inventor: Yoshifumi Nagamine
  • Combine harvester
    Patent number: 4610127
    Abstract: A combine harvester comprising a threshing chamber having a threshing drum, a reaping section, a separating section, a conveyor and guide means of V-shaped disposed in the threshing chamber wherein the center line of the reaping section in the longitudinal direction of the harvester body and the tip of the guide means are deviated to the same side with respect to the center line of the conveyor in the longitudinal direction of the harvester body.
    Type: Grant
    Filed: August 22, 1985
    Date of Patent: September 9, 1986
    Assignee: Kubota, Ltd.
    Inventors: Jyutaro Eguchi, Junzo Sukenari, Shinzo Kashino, Ryuichi Minami, Tetsuichi Odahara, Masahiro Iwashita
  • Transmission for a tractor
    Patent number: 4610174
    Abstract: A transmission for a tractor in which a forward-reverse change mechanism M3 is disposed between a first change speed mechanism M1 and a second change speed mechanism M2 and to the first change speed mechanism M1 a PTO countershaft 34 and a PTO shaft shaft 32 connected thereto are operatively connected. A drive shaft 47 for front wheels is operatively connected to the second change speed mechanism M2. A rotational power is transmitted to a mid-PTO shaft 39 from the PTO countershaft 34 via a gear 50 which is mounted freely and rotatably on the drive shaft 47 for the front wheels.
    Type: Grant
    Filed: August 22, 1984
    Date of Patent: September 9, 1986
    Assignee: Kubota, Ltd.
    Inventors: Masao Takagi, Mitsuo Watashi
  • Wheel drive structure for agricultural tractor
    Patent number: 4609065
    Abstract: A wheel drive structure for an agricultural tractor comprising a drive case housing a differential mechanism and reduction mechanisms to transmit power from said differential mechanism to wheels. The drive case comprises first and second case portions and said first case portion is made of a structural steel pipe.
    Type: Grant
    Filed: January 16, 1985
    Date of Patent: September 2, 1986
    Assignee: Kubota, Ltd.
    Inventors: Hajime Shikiya, Hiroyuki Miki, Yasuo Nakata, Kazuo Hirata, Seiichi Ishiizumi
  • Change speed operating apparatus for a tractor
    Patent number: 4608879
    Abstract: A change speed operating apparatus for a tractor comprises an oil hydraulic stepless change speed device, a change speed pedal for operating the device, a change speed operating mechanism for connecting both of the device and the pedal, a neutral return mechanism for urging the change speed operating mechanism into a neutral position, a speed setting mechanism and permissible means for permitting an independent movement of the change speed operating mechanism in a direction of acceleration to forward traveling.
    Type: Grant
    Filed: September 12, 1984
    Date of Patent: September 2, 1986
    Assignee: Kubota, Ltd.
    Inventors: Mikio Ishida, Shoso Ishimori, Hagime Nakamura, Kenzo Ushiro
  • Combine harvester
    Patent number: 4606356
    Abstract: A combine harvester according to the invention comprises a reaping section for reaping the crop and bringing the reaped crop substantially to a mid-position transversely of the machine, a conveyer for passing the crop rearwardly and upwardly, a threshing chamber housing a threshing drum for threshing the crop delivered by the conveyer, and straw walkers for separating grain from chaff. The threshing chamber and the straw walkers have large transverse dimensions. The threshing chamber has distributing guide plates on its ceiling to pass grain and straw resulting from the threshing distributedly on to the wide straw walkers.
    Type: Grant
    Filed: November 2, 1984
    Date of Patent: August 19, 1986
    Assignee: Kubota, Ltd.
    Inventor: Tetsuichi Odahara
  • Automatic running work vehicle
    Patent number: 4603753
    Abstract: An automatic running work vehicle adapted to repeatedly work on the ground while automatically changing its running direction and provided with means for controlling the vehicle body so that the vehicle body will be automatically positioned, upon a change of direction after finishing one course, for the next course with its orientation and position in match with the boundary of the course.
    Type: Grant
    Filed: December 13, 1983
    Date of Patent: August 5, 1986
    Assignee: Kubota, Ltd.
    Inventors: Shingo Yoshimura, Katsumi Ito, Shigeru Tanaka
  • Automatic running work vehicle
    Patent number: 4600999
    Abstract: An automatic running work vehicle having a device for teaching the outer periphery of the entire area of a work site and automatically producing from the result a running course covering the interior thereof. The vehicle is adapted to automatically run the course under steering control.
    Type: Grant
    Filed: May 20, 1983
    Date of Patent: July 15, 1986
    Assignee: Kubota, Ltd.
    Inventors: Katsumi Ito, Jituo Ysohida
  • Power transmission control apparatus
    Patent number: 4598545
    Abstract: There is disclosed a power transmission control apparatus having a clutching function and a modulating function and enabling a vehicle installed with this apparatus to make a sudden start after a clutch has been disengaged. The apparatus includes a main change speed control valve (V2), a backward and forward switch valve (V1), a modulation valve (MV) and an inching valve (IV).
    Type: Grant
    Filed: March 15, 1985
    Date of Patent: July 8, 1986
    Assignee: Kubota, Ltd.
    Inventor: Denzaburo Harada
  • Power steering apparatus
    Patent number: 4592440
    Abstract: A power steering apparatus comprises a center pin having an axis of forward-rearward direction of a vehicle body and disposed at the middle portion of the vehicle body in the transverse direction, a front wheel supporter disposed swingably about the center pin, a steering arm for each of front wheels operatively connected to the front wheel supporter and a steering cylinder 23 for operating the steering arms. The steering cylinder is disposed perpendicular to the center pin and mounted on the front wheel supporter so as to swing in integral with the front wheel supporter.
    Type: Grant
    Filed: July 11, 1984
    Date of Patent: June 3, 1986
    Assignee: Kubota, Ltd.
    Inventors: Tsuginobu Ujita, Seiichi Takahashi
  • Sugar cane harvester
    Patent number: 4584824
    Abstract: In a sugar cane harvester having a defoliating device for scratching off the leaves of sugar canes, a plurality of separating means are disposed side by side with regular intervals such that leaves attached to sugar cane stalks are separated therefrom with the passage of sugar canes through the spaces between adjacent separating means.
    Type: Grant
    Filed: May 12, 1983
    Date of Patent: April 29, 1986
    Assignee: Kubota, Ltd.
    Inventor: Shota Hiyamuta
  • Speed changing apparatus for a working vehicle
    Patent number: 4579015
    Abstract: The invention provides a speed changing apparatus for a working vehicle comprising branched transmission lines between an input shaft and an output shaft. Each of the transmission lines includes one or more synchromesh type change speed gear mechanisms and one hydraulically operated clutch.
    Type: Grant
    Filed: June 10, 1985
    Date of Patent: April 1, 1986
    Assignee: Kubota, Ltd.
    Inventor: Tetsu Fukui
  • Transmission for agricultural tractors
    Patent number: 4574910
    Abstract: A transmission for agricultural tractors in which a front wheel speed increasing transmission part (12) is disposed forwardly of a main transmission part (8). An input shaft (13) and an output shaft (15) of the speed increasing transmission part (12) are arranged coaxial with a front wheel drive output shaft (14a) of the main transmission part (8).
    Type: Grant
    Filed: December 12, 1984
    Date of Patent: March 11, 1986
    Assignee: Kubota, Ltd.
    Inventors: Hiroyuki Miki, Mikio Kinoshita, Tetsu Fukui
  • Automatic running work vehicle
    Patent number: 4573547
    Abstract: An automatic running work vehicle in which both front wheels and rear wheels can be steered and which is provided with a follower sensor for detecting the boundary between an unworked area and a worked area and an orientation sensor for detecting the running direction so as to run automatically along the boundary. Based on the result of detection of the boundary by the follower sensor and on the result of detection of the orientation of the vehicle body by the orientation sensor, the front and rear wheels are steered automatically to correct the running direction automatically.
    Type: Grant
    Filed: December 13, 1983
    Date of Patent: March 4, 1986
    Assignee: Kubota, Ltd.
    Inventors: Shingo Yoshimura, Katsumi Ito, Shigeru Tanaka
  • Agricultural tractor
    Patent number: D282849
    Type: Grant
    Filed: September 16, 1983
    Date of Patent: March 4, 1986
    Assignee: Kubota, Ltd.
    Inventor: Genichi Funabashi
  • Agricultural tractor
    Patent number: D283135
    Type: Grant
    Filed: September 29, 1983
    Date of Patent: March 25, 1986
    Assignee: Kubota Ltd.
    Inventors: Genichi Funabashi, Akira Teraoka, Tadashi Nakamura