Patents by Inventor Eriya Harada

Eriya Harada 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).

  • Publication number: 20100064649
    Abstract: A work vehicle includes: a container; a conveyance mechanism configured to convey an object to the container using a force of wind generated by a blower; and an evaluation unit configured to evaluate a conveyance state of the conveyed object to the container. The evaluation unit has a drive load detecting function of detecting a drive load of the blower, and a conveyance state determining function of determining whether the conveyance state reached a predetermined conveyance state, based on the detected drive load.
    Type: Application
    Filed: February 18, 2009
    Publication date: March 18, 2010
    Applicant: KUBOTA CORPORATION
    Inventors: Eriya Harada, Jean-Christophe Girard, Florent Voiry
  • Patent number: 7665285
    Abstract: A work vehicle includes: a container; a conveyance mechanism configured to convey an object to the container using a force of wind generated by a blower; and an evaluation unit configured to evaluate a conveyance state of the conveyed object to the container. The evaluation unit has a drive load detecting function of detecting a drive load of the blower, and a conveyance state determining function of determining whether the conveyance state reached a predetermined conveyance state, based on the detected drive load.
    Type: Grant
    Filed: February 18, 2009
    Date of Patent: February 23, 2010
    Assignee: Kubota Corporation
    Inventors: Eriya Harada, Jean-Christophe Girard, Florent Voiry
  • Patent number: 7448192
    Abstract: A fill detection device for a grass container includes: a detection switch; a pivot sensor that is fastened inside the grass container, that can actuate the detection switch as a result of contact with cut grass, and whose position can be changed between a raised non-detection position and a lowered detection position, the pivot sensor having: a first pressure-sensing surface that faces generally upwardly when the pivot sensor is in the non-detection position; and a second pressure-sensing surface that is linked to the first pressure-sensing surface, and that faces generally substantially rearwardly when the pivot sensor is in the non-detection position.
    Type: Grant
    Filed: September 7, 2005
    Date of Patent: November 11, 2008
    Assignee: Kubota Corporation
    Inventors: Hideya Umemoto, Eriya Harada, Hiroki Nagai, Hiroyuki Tada, Nobuyuki Yamashita, Kazutomo Miyaguchi
  • Patent number: 7124563
    Abstract: A grass collecting system having a grass collecting duct for transmitting grass clippings reaped by a mower to a swingable grass catcher. The grass collecting duct includes top and side plates for guiding grass clippings from the mower unit to the grass catcher. An outlet portion is defined by an end of a space surrounded by the top and side plates. The grass collection system also having a grass clippings discharge path for transmitting grass clippings received from the mower, from the outlet portion into the grass catcher, and a bottom plate unit disposed in the outlet portion that is swingable about a pivot shaft from a guide position to an upstanding position. The bottom plate unit has a shortening mechanism for shortening a distance between a forward end of the bottom plate unit projecting into the grass collecting duct and the pivot shaft.
    Type: Grant
    Filed: September 8, 2004
    Date of Patent: October 24, 2006
    Assignee: Kubota Corporation
    Inventors: Takashi Shibata, Hideya Umemoto, Nobuyuki Yamashita, Eriya Harada, Takashi Kuramoto
  • Publication number: 20060201123
    Abstract: A fill detection device for a grass container includes: a detection switch; a pivot sensor that is fastened inside the grass container, that can actuate the detection switch as a result of contact with cut grass, and whose position can be changed between a raised non-detection position and a lowered detection position, the pivot sensor having: a first pressure-sensing surface that faces generally upwardly when the pivot sensor is in the non-detection position; and a second pressure-sensing surface that is linked to the first pressure-sensing surface, and that faces generally substantially rearwardly when the pivot sensor is in the non-detection position.
    Type: Application
    Filed: September 7, 2005
    Publication date: September 14, 2006
    Applicant: Kubota Corporation
    Inventors: Hideya Umemoto, Eriya Harada, Hiroki Nagai, Hiroyuki Tada, Nobuyuki Yamashita, Kazutomo Miyaguchi
  • Publication number: 20050109003
    Abstract: A grass collecting system having a grass collecting duct for transmitting grass clippings reaped by a mower unit to a grass catcher in a grass collecting position, the grass catcher being swingable to a grass discharge position. The grass collecting duct includes a top plate and right and left side plates for guiding the grass clippings from the mower unit to the grass catcher. An outlet portion is defined by an end of a space surrounded by the top plate and the right and left side plates. A grass clippings discharge path is formed for transmitting the grass clippings received from said mower unit, from the outlet portion (6B) of the grass collecting duct (6) into the grass catcher (5). A bottom plate unit (63) disposed in the outlet portion to be swingable about a pivot shaft (73) from a guide position for preventing falling of the grass clippings to an upstanding position.
    Type: Application
    Filed: September 8, 2004
    Publication date: May 26, 2005
    Applicant: KUBOTA CORPORATION
    Inventors: Takashi Shibata, Hideya Umemoto, Nobuyuki Yamashita, Eriya Harada, Takashi Kuramoto
  • Patent number: 6729431
    Abstract: A frame type tractor having an engine mounted in a front region of a main frame extending longitudinally of a tractor body, and a transmission case mounted in a rear region of the main frame. A backhoe mounting frame is attached to a rear end of the main frame. Rollover protection system mounts are arranged in upper portions of the backhoe mounting frame for fixedly supporting a rollover protection system. The backhoe mounting frame has a frame structure defining an inside space therein and including a pair of right and left side walls, a top wall interconnecting upper ends of the side walls, and a bottom wall interconnecting lower ends of the side walls. The right and left side walls have the rollover protection system mounts and backhoe attaching portions for engaging and connecting a backhoe unit.
    Type: Grant
    Filed: February 26, 2002
    Date of Patent: May 4, 2004
    Assignee: Kubota Corporation
    Inventors: Masashi Osuga, Hiroshi Shimada, Takashi Shibata, Hiroshi Oshima, Eriya Harada, Hiroshi Kawabata, Yoshio Tomiyama
  • Patent number: 6720679
    Abstract: An interlock circuit for a working vehicle having a vehicle body, a working implement attached to the vehicle body, a clutch mechanism for connecting and disconnecting power to the working implement, and a shifting device for determining a traveling direction of the vehicle body. The interlock circuit has a check function to check a backward operational run in which the vehicle body travels backward with the clutch mechanism engaged, and a release function to permit a backward operational run by canceling the check function. The check function checks the backward operational run based on a signal indicating an on/off state of the clutch mechanism and a signal indicating a traveling direction of the vehicle body determined by the shifting device. The release function maintains the check function off continuously by operating a release switch when the clutch mechanism is engaged, and the signal indicating a traveling direction of the vehicle body indicates forward or neutral.
    Type: Grant
    Filed: February 20, 2001
    Date of Patent: April 13, 2004
    Assignee: Kubota Corporation
    Inventors: Eriya Harada, Nobuyuki Yamashita, Shinichiro Saji, Yoshio Tomiyama, Takashi Shibata
  • Publication number: 20030010563
    Abstract: A frame type tractor having an engine mounted in a front region of a main frame extending longitudinally of a tractor body, and a transmission case mounted in a rear region of the main frame. A backhoe mounting frame is attached to a rear end of the main frame. Rollover protection system mounts are arranged in upper positions of the backhoe mounting frame for fixedly supporting a rollover protection system. The backhoe mounting frame has a frame structure defining an inside space therein and including a pair of right and left side walls, a top wall interconnecting upper ends of the side walls, and a bottom wall interconnecting lower ends of the side walls. The right and left side walls have the rollover protection system mounts and backhoe attaching portions for engaging and connecting a backhoe unit.
    Type: Application
    Filed: February 26, 2002
    Publication date: January 16, 2003
    Applicant: KUBOTA CORPORATION
    Inventors: Masashi Osuga, Hiroshi Shimada, Takashi Shibata, Hiroshi Oshima, Eriya Harada, Hiroshi Kawabata, Yoshio Tomiyama
  • Patent number: 6360517
    Abstract: A mower unit (B) having a housing (13), blades (12) supported in the housing to be rotatable about vertical axes (P1) acting as the centers of rotation, cutting edges (12A) defined at front edge regions of each blade with respect to a direction of rotation thereof, and lift vanes (12B) erected from rear edge regions of each blade with respect to the direction of rotation thereof. Each of the lift vanes includes a first vane portion (12b) extending the more rearwardly, with respect to the direction of rotation, the farther away the first vane is from the center of rotation, and a second vane portion (12c) bent in the direction of rotation from a radially outward end of the first vane portion.
    Type: Grant
    Filed: February 24, 2000
    Date of Patent: March 26, 2002
    Assignee: Kubota Corporation
    Inventors: Shozo Ishimori, Nobuyuki Yamashita, Hiroki Nagai, Hiroshi Oshima, Eriya Harada, Hiroshi Kawabata
  • Publication number: 20020000759
    Abstract: An interlock circuit for a working vehicle having a vehicle body, a working implement attached to the vehicle body, a clutch mechanism for connecting and disconnecting power to the working implement, and a shifting device for determining a traveling direction of the vehicle body. The interlock circuit has a check function to check a backward operational run in which the vehicle body travels backward with the clutch mechanism engaged, and a release function to permit a backward operational run by canceling the check function. The check function checks the backward operational run based on a signal indicating an on/off state of the clutch mechanism and a signal indicating a traveling direction of the vehicle body determined by the shifting device. The release function maintains the check function off continuously by operating a release switch when the clutch mechanism is engaged, and the signal indicating a traveling direction of the vehicle body indicates forward or neutral.
    Type: Application
    Filed: February 20, 2001
    Publication date: January 3, 2002
    Applicant: KUBOTA CORPORATION
    Inventors: Eriya Harada, Nobuyuki Yamashita, Shinichiro Saji, Yoshio Tomiyama, Takashi Shibata
  • Patent number: 6122903
    Abstract: An apparatus for raising and lowering a mower unit, having a control lever movable between a first terminal position and a second terminal position for raising and lowering the mower unit, a link mechanism for raising the mower unit with movement from the first terminal position to the second terminal position of the control lever, a first stopper for holding the control lever in the first terminal position, a second stopper for holding the control lever in the second terminal position, and an assist mechanism for applying a force to the link mechanism to raise the mower unit only when the control lever is located between the first terminal position and the second terminal position.
    Type: Grant
    Filed: October 24, 1997
    Date of Patent: September 26, 2000
    Assignee: Kubota Corporation
    Inventors: Masaki Hayashi, Masatake Murakawa, Kazuaki Kurohara, Nobuyuki Yamashita, Mikio Yuki, Eriya Harada
  • Patent number: 5887671
    Abstract: A working vehicle with power steering, having a substantially closed accommodating space defined by an engine hood and a control panel, an engine disposed in the accommodating space and a steering shaft disposed in the control panel. A cooling fan produces cooling air flows moving toward the engine from an air intake formed in the control panel. A power steering apparatus for supplying steering assist power to the steering shaft, and a control unit for controlling the power steering apparatus, are arranged in the accommodating space to be exposed to the cooling air flows.
    Type: Grant
    Filed: June 25, 1997
    Date of Patent: March 30, 1999
    Assignee: Kubota Corporation
    Inventors: Mikio Yuki, Hiroyuki Ogasawara, Masatake Murakawa, Kazuaki Kurohara, Nobuyuki Yamashita, Masaki Hayashi, Eriya Harada, Masatoshi Yamaguchi, Hiroki Nagai, Yoshio Tomiyama, Katsuhiko Uemura
  • Patent number: 5718303
    Abstract: An engine hood construction for a work vehicle is disclosed. The engine hood is vertically separatable into a lower hood section and an upper hood section. The lower hood section is fixedly attachable to and detachable from a vehicle frame, and the upper hood section is attached to the vehicle frame to be pivotably and vertically opened and closed relative to the frame. A control panel is provided at a rear portion of the engine hood and forming a rear wall of an engine room. The control panel has a forwardly opened hook shape in a plan view. The construction further includes a connecting arrangement for fixedly connecting the lower hood section to the vehicle frame and engaging members for enabling the lower hood section to be engaged with the control panel along a fore-and-aft direction of the vehicle when the connecting arrangement is not connected.
    Type: Grant
    Filed: November 14, 1995
    Date of Patent: February 17, 1998
    Assignee: Kubota Corporation
    Inventors: Hiroyuki Ogasawara, Mikio Yuki, Akira Minoura, Kazuaki Kurohara, Masaki Hayashi, Katsuhiko Uemura, Eriya Harada
  • Patent number: 5689953
    Abstract: A cooling system for a vehicle having a radiator disposed above an engine, and a muffler disposed in a region below the engine. This system includes an air intake guide for guiding cooling air to the radiator from outside, an exhaust guide for guiding a large part of the cooling air having flowed past the radiator, forwardly of the vehicle, a cooling fan for producing air currents flowing from the air intake guide past the radiator to the exhaust guide, and ducts provided for opposite sides of the exhaust guide for guiding part of the cooling air having flowed passed the radiator into a muffler cover enclosing the muffler. The ducts communicate with positions of the muffler cover to blow the cooling air toward connections between exhaust pipes of the engine and the muffler.
    Type: Grant
    Filed: March 28, 1996
    Date of Patent: November 25, 1997
    Assignee: Kubota Corporation
    Inventors: Nobuyuki Yamashita, Ryozo Imanishi, Masaki Hayashi, Kazuaki Kurohara, Masatake Murakawa, Katsuhiko Uemura, Eriya Harada
  • Patent number: 5678648
    Abstract: A working vehicle according to the present invention has a vertical engine mounted in an engine room covered by a hood, cooling air being drawn from above the engine and exhausted outwardly of a vehicle body through exhaust openings formed in a front surface of the hood. The working vehicle includes a fan disposed above the engine, and dust netting disposed above the fan. The dust netting is substantially box-shaped and includes an overhang portion extending rearwardly of the engine and downwardly.
    Type: Grant
    Filed: March 27, 1995
    Date of Patent: October 21, 1997
    Assignee: Kubota Corporation
    Inventors: Ryozo Imanishi, Nobuyuki Yamashita, Hiroyuki Ogasawara, Masaki Hayashi, Katsuhiko Uemura, Eriya Harada
  • Patent number: 5560188
    Abstract: A lawn tractor has an engine with a vertical output shaft, front wheels and rear wheels, a body frame extending longitudinally of the tractor, a mower unit supported by the body frame, a grass catcher supported the by body frame, a blower unit supported by the body frame, and a duct for transporting grass clippings cut by the mower unit into the grass catcher. The duct includes a first duct portion extending between the mower unit and the blower unit, and a second duct portion extending between the blower unit and the grass catcher. The mower unit has a vertical mower drive shaft for receiving engine power. The blower unit has a vertical blower input shaft for receiving engine power. An intermediate shaft is disposed between the mower unit and blower unit. The intermediate shaft has a first, a second and a third pulleys mounted thereon. The first pulley is drivably connected to the engine output shaft. The second pulley is drivably connected to the mower drive shaft.
    Type: Grant
    Filed: March 27, 1995
    Date of Patent: October 1, 1996
    Assignee: Kubota Corporation
    Inventors: Masatake Murakawa, Eriya Harada, Katsuhiko Uemura, Kazuaki Kurohara
  • Patent number: 5365802
    Abstract: An operation device for an accelerator composed of an output pulley, having an engaging latch and two engaging projections, for winding an output cable; a first pulley having a "C" shaped first engaging hole, for winding a first cable; a second pulley having a "C" shaped second engaging hole, for winding a second cable; and an accelerator lever having an engaging piece. The first engaging projection is moved within the first engaging hole and the second engaging projection is moved within the second engaging hole. The engaging projection is engaging with the engaging piece when the output pulley is rotated.
    Type: Grant
    Filed: August 9, 1993
    Date of Patent: November 22, 1994
    Assignees: Nippon Cable System Inc., Kubota Ltd.
    Inventors: Kazuhiro Suzuki, Eriya Harada, Akira Minoura
  • Patent number: 5335487
    Abstract: A rotating rate control apparatus for adjusting rotation of an engine of a working vehicle between a minimum rate and a maximum rate. The control apparatus has a first, a second and a third rotating rate adjusting devices. The first rotating rate adjusting device adjusts a basic rotating rate of the engine between the minimum rate and maximum rate. The second rotating rate adjusting device is shiftable between an ON position and an OFF position. The second rotating rate adjusting device is operable, when in the ON position, to set the engine to a predetermined rotating rate between the minimum rate and the maximum rate inclusive. The third rotating rate adjusting device is operable, when the second rotating rate adjusting device is in the OFF position, to adjust the rotating rate of the engine between the basic rotating rate adjusted by the first rotating rate adjusting device and the maximum rate.
    Type: Grant
    Filed: March 4, 1993
    Date of Patent: August 9, 1994
    Assignee: Kubota Corporation
    Inventors: Masatake Murakawa, Akira Minoura, Kazuaki Kurohara, Ryozo Imanishi, Nobuyuki Yamashita, Eriya Harada
  • Patent number: 5215056
    Abstract: An engine speed control system for a working vehicle having an engine, and a propelling transmission and a power takeoff device driven by the engine. Engine speed is adjustable by an accelerator controlled by control signals outputted from a control unit. The control unit is connected to a clutch operation detecting switch for detecting an operative state of a power takeoff clutch for operating a power takeoff device and to a shift condition detecting switch for detecting a shift of the propelling transmission. The control unit outputs a control signal for rotating the engine at an idling speed when the propelling transmission is in neutral and the power takeoff clutch is disengaged, and a control signal for rotating the engine at a high rotating rate when the propelling transmission is in a drive transmitting position or the power takeoff clutch is engaged.
    Type: Grant
    Filed: May 1, 1992
    Date of Patent: June 1, 1993
    Assignee: Kubota Corporation
    Inventors: Eriya Harada, Mikio Yuki, Masatsugu Tone, Masatake Murakawa, Ryozo Imanishi