Patents Assigned to Kubota Ltd.
  • Method of remodeling control section of backhoe
    Patent number: 4541161
    Abstract: A method of remodeling a control section of a backhoe comprising adding a relay unit including relay rotary sleeve shafts and rotary shafts rigidly attached to a carrier base to extend in two parallel rows, and operatively connecting the rotary sleeve shafts and rotary shafts selectively to drive rods which are pushed or pulled by an oscillation in one direction of one of the hand levers, respectively, and to driven rods operatively connected to those of the valves which should be actuated by the drive rods, respectively.
    Type: Grant
    Filed: October 31, 1983
    Date of Patent: September 17, 1985
    Assignee: Kubota, Ltd.
    Inventor: Shizuo Shimoie
  • Heat-resisting alloy for rolls for glass forming
    Patent number: 4540424
    Abstract: A heat-resisting alloy used for rolls such as glass forming roll, continuous casting roll specifically rolls to be used under severe condition where heating and cooling are repeated containing following components in the following proportions in terms of % by weight:______________________________________ C 0.01-0.20 Si 0.10-1.5 Mn 0.10-2.0 Ni 0.10-6.0 Cr 14.0-18.0 ______________________________________as basic components and with at least one of following components contained ______________________________________ Mo 0.1-2.0 Nb 0.05-0.5 V 0.10-0.5 Co 0.10-5.0 ______________________________________and in the case containing Co,Ni+Co.ltoreq.7.0the balance being substantially Fe and unavoidable impurities.
    Type: Grant
    Filed: September 30, 1983
    Date of Patent: September 10, 1985
    Assignee: Kubota, Ltd.
    Inventors: Yoshiaki Yamakami, Arata Yoshimitsu
  • Assembly roll for high temperature service
    Patent number: 4538668
    Abstract: A roll, for high temperature service in continuous slab casting, has having its sleeve shrinkage-fitted onto the roll shaft under tight contact state, wherein the alloy composition of the sleeve as expressed in % by weight is as follows.The principal components are:C: 0.20 or lessSi: 0.1 to 2.0Mn: 0.1 to 2.0Cr: 10 to 14N: 0.02 to 0.20; providedC+N: 0.30 to 0.35; andin addition to the principal components specified above, permissably one or more components beingNi: 0.1 to 5.0Mo: 0.1 to 2.0V: 0.01 to 0.3W: 0.1 to 0.3, andthe balance is Fe.
    Type: Grant
    Filed: March 28, 1984
    Date of Patent: September 3, 1985
    Assignee: Kubota, Ltd.
    Inventors: Hisakatsu Nishihara, Arata Yoshimitsu
  • Running vehicle
    Patent number: 4537271
    Abstract: A running vehicle having control means for judging whether an obstacle detected by a non-contact type obstacle sensor on a front portion of its body is at rest or in motion based on the result of detection and controlling the vehicle body so as to cause the body to detour the obstacle when it is at rest or to automatically stop the vehicle body when the obstacle is in motion.
    Type: Grant
    Filed: May 26, 1983
    Date of Patent: August 27, 1985
    Assignee: Kubota, Ltd.
    Inventors: Katsumi Ito, Osami Fuziwara
  • Tractor with three-point linkage connecting scraper thereto and automatic tilt control
    Patent number: 4535847
    Abstract: A seated-operator type tractor has a vehicle proper (1), equipped rearwardly thereof with a link mechanism (6) and a scraper (9) for ground-leveling. The vehicle (1) is further provided with: a position-controlling mechanism (34) for controlling up-and-down position of the scraper (9); an automatic control mechanism for maintaining the scraper (9) in its left-and-right horizontal posture, by a sensor (50) therefor; a controlling valve (24) for controlling blade-angle adjustment of the scraper (9); and a manual switch (47) disposed near at hand of the seated operator, for shifting over the vehicle (24).
    Type: Grant
    Filed: May 2, 1983
    Date of Patent: August 20, 1985
    Assignee: Kubota, Ltd.
    Inventors: Shigekazu Hasegawa, Naoki Okita, Satoshi Machida
  • Change-speed apparatus in a tractor
    Patent number: 4528872
    Abstract: A change-speed apparatus in a tractor equipped with an engine has a planetary gearing mechanism settable between its two positions. Actuation of the mechanism to one of the two positions is hydraulically power-actuated, while actuation to the other of the two positions is automatically effected, as the hydraulic power is released, by a resiliently urging spring. Power-transmitting operative connection is therefore always maintained between the engine and running-drive wheels even when the hydraulic actuation power comes to extinct.
    Type: Grant
    Filed: April 30, 1982
    Date of Patent: July 16, 1985
    Assignee: Kubota, Ltd.
    Inventors: Tomeo Umemoto, Toshiyuki Yotsumoto
  • Process for producing walking bar members for continuous casting
    Patent number: 4527411
    Abstract: A process for manufacturing a walking bar member for continuous casting from an elongated tubular metal blank by heating the blank at a temperature of 550.degree. to 1250.degree. C., subjecting the heated blank to plastic working which achieves a working ratio of up to 65% or a flattening ratio of over 1 but not greater than 3.0 to flatten the blank into a tubular body by compression over the entire length thereof, and machining a surface of the tubular body at the side thereof to be brought into contact with a slab to smooth the surface and provide a reduced wall thickness, the working ratio and the flattening ratio being represented by (D-H)/D.times.100 and W/H, respectively, wherein D is the outside diameter of the blank before the plastic working, H is the minor diameter of the tubular body after the plastic working, and W is the major diameter of the tubular body after the plastic working.
    Type: Grant
    Filed: December 30, 1982
    Date of Patent: July 9, 1985
    Assignee: Kubota Ltd.
    Inventors: Akira Shinosaki, Shinji Amako
  • Fruit harvesting apparatus with television camera and monitor
    Patent number: 4519193
    Abstract: A fruit harvesting apparatus in which the positions of fruit are searched and detected by a television camera with a variable shooting direction. Both the television camera and a spot light emitting device, such as a laser, are varied in position and direction in accordance with instructions to locate a fruit. A movable fruit picker is then moved to the determined position of the fruit and operated to pick the fruit.
    Type: Grant
    Filed: May 19, 1983
    Date of Patent: May 28, 1985
    Assignee: Kubota, Ltd.
    Inventors: Jituo Yoshida, Shigeaki Okuyama, Hiroshi Suzuki
  • Gearing transmission
    Patent number: 4513636
    Abstract: A gearing transmission has two operatively different sets of planetary transmission apparatuses and is adapted to enable speed changing in six steps in the forward running travel and in two steps in the rearward running travel. The two operatively different sets of planetary transmission apparatuses have only one common internal-tooth gear and only one common spider.
    Type: Grant
    Filed: December 20, 1982
    Date of Patent: April 30, 1985
    Assignee: Kubota, Ltd.
    Inventor: Denzaburo Harada
  • Agricultural tractor
    Patent number: 4513834
    Abstract: A travelling transmission case and a differential transmission case are respectively connected to the upper and lower portions of a vertically long-shape speed reduction case. Thus, the distance between the lowest level of the travelling transmission case and the ground is increased.
    Type: Grant
    Filed: May 11, 1982
    Date of Patent: April 30, 1985
    Assignee: Kubota, Ltd.
    Inventors: Tetsuaki Hayashi, Masahiro Kabu, Nobuyuki Yamashita
  • Rotary cultivating apparatus of laterally shiftable type
    Patent number: 4512413
    Abstract: A rotary cultivating apparatus wherein a tiller frame having a rotary tiller unit is laterally shiftable relative to a fixed frame having connecting portions for a vehicle and a power input shaft. A mechanism for laterally shifting the tiller frame comprises a transmission gear member mounted on a transmission shaft for the tiller unit and having an inner gear and an outer gear, a shifting screw rod reversibly rotatable by the transmission gear member through intermediate gears, and an internally threaded member fixed to tiller frame and in screw-thread engagement with the screw rod. One of the intermediate gears is selectively meshable with the transmission gear member to shift the tiller frame laterally in either direction by utilizing the power for driving the tine shaft of the tiller unit.
    Type: Grant
    Filed: June 8, 1982
    Date of Patent: April 23, 1985
    Assignee: Kubota Ltd.
    Inventors: Mitsuki Hirata, Yoshitaka Sato, Kaname Matudaira
  • Tube for thermal cracking or reforming hydrocarbon and manufacturing method thereof
    Patent number: 4510988
    Abstract: A reactor tube for thermally cracking or reforming hydrocarbons comprising a tube member made of Fe-Cr-Ni heat resisting material and a covering layer of self-fluxing alloy fusing to the inner surface of the tube member, the covering layer made of heat resisting material free from Ni or with a low Ni content. The tube member is manufactured by centrifugal casting, and the covering layer is formed by applying the self-fluxing alloy powder by scattering with or without thermit agent or spraying the alloy to the inner surface of the tube member.
    Type: Grant
    Filed: August 17, 1982
    Date of Patent: April 16, 1985
    Assignees: Kubota Ltd., Toyo Engineering Corporation
    Inventors: Keizo Konoki, Takanobu Shinohara, Ikuyoshi Kochi, Keiichi Shibata, Hisakatsu Nishihara, Toshiaki Morichika, Junichi Sugitani, Koji Tsuchida
  • Latent heat accumulating greenhouse
    Patent number: 4510921
    Abstract: This invention relates to a latent heat accumulating greenhouse utilizing solar heat. The object of the invention is to provide a greenhouse which is simple in construction, of high efficiency for heat absorbing and capable of much absorbing and accumulating of heat. A heat accumulating chamber (B) partitioned by transparent sheets (1) is provided between the attic and a floor surface facing north in the greenhouse (A). A blower fan (2) is disposed to confront an opening (1a) provided at the lower portion in said heat accumulating chamber (B). Also, in the heat accumulating chamber (B), a heat accumulating unit (3) having a large number of light transmitting windows (32) and enclosing a phase transformation heat accumulating material (33) such as CaCl.sub.2.6H.sub.2 O, Na.sub.2 SO.sub.4.10H.sub.2 O therein is detachably suspended in a position close to windowpanes at the north side.
    Type: Grant
    Filed: September 10, 1982
    Date of Patent: April 16, 1985
    Assignee: Kubota Ltd.
    Inventors: Naomichi Yano, Isao Makido, Hajime Ito
  • Working vehicle equipped with engine automatic stop device
    Patent number: 4509614
    Abstract: A working vehicle equipped with engine automatic stop device, having a vertically movable seat and an engine adapted to be stopped when the operator leaves the seat. There is disposed a restraining mechanism for preventing the engine from being stopped even though the operator leaves the seat when a clutch at a power take-out shaft is disengaged.
    Type: Grant
    Filed: May 6, 1983
    Date of Patent: April 9, 1985
    Assignee: Kubota Ltd.
    Inventors: Niro Bando, Kazuaki Kurohara, Yasuo Fujima, Fumihiro Ikeda, Kenzo Usiro, Hiroyuki Ogasawara
  • Combine harvester
    Patent number: 4497162
    Abstract: A combine harvester of directly-streamed type wherein a thresh/selection apparatus (3) and a manipulation quarter (4) are mounted on a vehicle framing (2) equipped with running travel means (1) thereunder; in such configuration of left and right juxtaposition as to enable their snug accommodation within the reaping width of the havester; an engine (26) is mounted, rearwardly of the said manipulation quarter (4), on to the said vehicle framing (2); and a lower portion of a said grain-tank (6) is disposed, at a position directly rearwardly of beater means (21), in a manner as to protrude into a front end upper portion of a selecting section (3b) with a strawwalker (22).
    Type: Grant
    Filed: January 18, 1983
    Date of Patent: February 5, 1985
    Assignee: Kubota, Ltd.
    Inventors: Jyutaro Eguchi, Shinzo Kashino, Tetsuichi Odahara, Gunzo Sukenari
  • Engine with a rotary-speed control apparatus and an emergency halt apparatus
    Patent number: 4487180
    Abstract: An engine has a load detector, or more specifically a threshold load comparator, and also detectors for sensing any abnormality of various factors influencing the normal engine operation. When no abnormality is sensed, the engine is made to operate automatically at a low speed level when the engine load is below the threshold value, and at a high speed level when the load is beyond such value. When any abnormality is sensed, then the engine is emergently halted in a fail-safe manner, thus any damaging disorder in controling circuitry for effecting such emergent halting leads in itself to emergent halting of the engine as well.
    Type: Grant
    Filed: November 21, 1983
    Date of Patent: December 11, 1984
    Assignee: Kubota, Ltd.
    Inventors: Ryoichi Ito, Osamu Murakami, Masayuki Nakamura, Kazuo Higo, Kengi Ueno
  • Forward-reverse changeover apparatus for working vehicle
    Patent number: 4484488
    Abstract: A forward-reverse changeover apparatus for working vehicles which comprises frist and second multiplate clutches, and an input shaft and an output shaft arranged concentrically with and separated from each other. Output gears extending from the first and second clutches respectively have the same number of teeth, and the output gear from the second clutch is positioned closer to the input shaft than an input gear on the output shaft.
    Type: Grant
    Filed: April 21, 1982
    Date of Patent: November 27, 1984
    Assignee: Kubota, Ltd.
    Inventors: Keizo Kato, Yasunobu Yamaue
  • Non-magnetic alloy having high hardness and good weldability
    Patent number: 4484958
    Abstract: An alloy consisting essentially of, by weight, 0.1-0.6% C, up to 2.0% Si, 5.0-15.0% Mn, 5.0-15.0% Cr, 5.0-13.0% Ni, less than 1.0% V, and one or both of up to 1.0% Mo and up to 2.0% Nb, balance being substantially Fe and inevitable impurities. The alloy has outstanding nonmagnetic property, high hardness and good weldability, and particularly useful for electro-magnetic stirrer rolls in continuous casting machine.
    Type: Grant
    Filed: February 10, 1983
    Date of Patent: November 27, 1984
    Assignee: Kubota, Ltd.
    Inventors: Atsunobu Shintani, Yoshiaki Yamakami, Hisashi Hiraishi
  • Method and apparatus for plasma welding
    Patent number: 4477711
    Abstract: The invention relates to an apparatus to perform plasma welding, by providing a cooling water temperature detector at the inlet side of cooling water in the plasma welding torch, controlling the temperature at the inlet side of the cooling water running into the plasma welding torch at a set temperature of more than 4.degree. C. and less than 18.degree. C., starting a plasma arc when the temperature of the cooling water reaches a specified point after starting to pass the cooling water, and moving the base metals and the torch relatively upon lapse of a specified time allowed to form a keyhole after start of the plasma arc.
    Type: Grant
    Filed: October 29, 1981
    Date of Patent: October 16, 1984
    Assignee: Kubota Ltd.
    Inventors: Takao Mihara, Toshiaki Morichika, Shigenori Sone
  • Combine
    Patent number: 4474188
    Abstract: A combine equipped with a dispersing guide plate at the inner upper portion of a threshing chamber. A tailings return port for returning tailings to the threshing chamber for second separation, is formed at the center of the inner upper surface of the threshing chamber where there is provided a space where a little amount of harvested grain stalks streams.
    Type: Grant
    Filed: April 26, 1983
    Date of Patent: October 2, 1984
    Assignee: Kubota, Ltd.
    Inventors: Shinzo Kashino, Ryuichi Minami, Junzo Sukenari