Patents by Inventor Osami Fujiwara

Osami Fujiwara 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: 20050217232
    Abstract: A mower tractor includes a vehicle body supported by a plurality of wheels; an engine mounted to the vehicle body; a mower suspended from the vehicle body; at least one grass collector bag for collecting grass cut by the mower; a grass collector bag holder supporting said at least one grass collector bag at a position on one side with respect to the engine; and a stopper portion for abutting against the grass collector bag so as to prevent the grass collector bag supported by the grass collector bag holder from moving toward the vehicle body.
    Type: Application
    Filed: March 9, 2005
    Publication date: October 6, 2005
    Applicant: KUBOTA CORPORATION
    Inventors: Masato Asahara, Kazuo Samejima, Yoshikazu Togoshi, Akira Minoura, Yasunobu Nakatani, Osami Fujiwara
  • Publication number: 20050039430
    Abstract: A lawn mower comprises a blade drive shaft with a blade rotatably mounted inside a mower deck supported by a vehicle body, a blower unit including a cylindrical blower housing connected to a grass clippings discharging section provided in a side end region of the mower deck, a vertical drive shaft having a shaft portion with vanes attached thereto inside the blower housing and a shaft portion extending upward through the blower housing, and a discharging sleeve projecting rearwardly along an outer tangent line of the blower housing, a grass collecting apparatus mounted rearwardly of the vehicle body, a duct for allowing the discharging sleeve to communicate with the grass collecting apparatus, and a belt-type blower driving mechanism for driving the vertical drive shaft of the blower unit.
    Type: Application
    Filed: March 9, 2004
    Publication date: February 24, 2005
    Applicant: KUBOTA CORPORATION
    Inventors: Kazuo Samejima, Yoshikazu Togoshi, Masato Asahara, Yoshiyuki Esaki, Akira Minoura, Osami Fujiwara
  • Patent number: 6854249
    Abstract: A lawn mower comprises a blade drive shaft with a blade rotatably mounted inside a mower deck supported by a vehicle body, a blower unit including a cylindrical blower housing connected to a grass clippings discharging section provided in a side end region of the mower deck, a vertical drive shaft having a shaft portion with vanes attached thereto inside the blower housing and a shaft portion extending upward through the blower housing, and a discharging sleeve projecting rearwardly along an outer tangent line of the blower housing, a grass collecting apparatus mounted rearwardly of the vehicle body, a duct for allowing the discharging sleeve to communicate with the grass collecting apparatus, and a belt-type blower driving mechanism for driving the vertical drive shaft of the blower unit.
    Type: Grant
    Filed: March 9, 2004
    Date of Patent: February 15, 2005
    Assignee: Kubota Corporation
    Inventors: Kazuo Samejima, Yoshikazu Togoshi, Masato Asahara, Yoshiyuki Esaki, Akira Minoura, Osami Fujiwara
  • Publication number: 20040154278
    Abstract: A mid-mount mower having a front frame unit including a pair of right and left front longitudinal frames, a first cross frame interconnecting the front longitudinal frames in forward positions thereof longitudinally of the vehicle body, and a second cross frame interconnecting the front longitudinal frames in rearward positions thereof longitudinally of the vehicle body, the front frame unit supporting the front wheel unit and also supporting a lift mechanism for vertically movably suspending the mower unit; a rear frame unit including a pair of right and left rear longitudinal frames, the rear frame unit being connected to the front frame unit; and a rear wheel drive unit interconnecting the rear longitudinal frames. The second cross frame has a downwardly opening recess disposed adjacent a middle position thereof, the recess allowing entry thereto of an upwardly protruding portion of the mower unit without interference when the mower unit is raised by the lift mechanism.
    Type: Application
    Filed: August 26, 2003
    Publication date: August 12, 2004
    Applicant: KUBOTA CORPORATION
    Inventors: Kazuo Samejima, Masato Asahara, Hiroshi Shimada, Akira Minoura, Yoshikazu Togoshi, Osami Fujiwara, Yoshiyuki Esaki
  • Publication number: 20040154274
    Abstract: A mid-mount mower having a body frame supported above the ground by front wheels and rear wheels, the body frame having a front cross frame in a forward portion thereof with respect to a longitudinal direction of a vehicle body, and a mower unit disposed between the front wheels and rear wheels. A main jack body is mounted on the front cross frame to be pivotable about a pivot shaft extending longitudinally of the vehicle body. The main jack body is in a storage position extending along the front cross frame when pivoted to a first pivot position about the pivot shaft, and in a substantially vertical position relative to the ground when pivoted to a second pivot position about the pivot shaft. The main jack body has a controlled portion exposed upward when the main jack body is in the vertical position.
    Type: Application
    Filed: August 26, 2003
    Publication date: August 12, 2004
    Applicant: KUBOTA CORPORATION
    Inventors: Kazuo Samejima, Yoshikazu Togoshi, Osami Fujiwara, Yoshiyuki Esaki, Akira Minoura
  • Publication number: 20040112667
    Abstract: A working vehicle propelled by independently driven right and left running units comprising a body frame with an engine mounted thereon; a front wheel unit for supporting the body frame in cooperation with the right and left running units; a left HST for receiving torque input from the engine; a right HST for receiving torque input from the engine; a left reduction mechanism for decelerating and transmitting torque output from the left HST to the left running unit; a right reduction mechanism for decelerating and transmitting torque output from the right HST to the right running unit; a left base block supported by the body frame, this base block forming a housing base for the left HST and a housing base for the left reduction mechanism; a right base block attached to the body frame, this base block forming a housing base for the right HST and a housing base for the right reduction mechanism. The base blocks are formed as port blocks for the HSTs, and define hydraulic ports in the housing bases for the HSTs.
    Type: Application
    Filed: August 26, 2003
    Publication date: June 17, 2004
    Applicant: KUBOTA CORPORATION
    Inventors: Akira Minoura, Teruo Shimamura, Masahiro Yamada, Yoshikazu Togoshi, Hironori Tsuchihashi, Osami Fujiwara, Yoshiyuki Esaki
  • Patent number: 6708805
    Abstract: A riding tractor in which engine output is transmitted to a running device through a hydrostatic stepless transmission. The tractor has a braking device for acting on the running device, a first brake operating device and a second brake operating device operable independently of each other for operating the braking device, and a brake control device for linking control displacements from the first brake operating device and the second the brake operating device to the brake device.
    Type: Grant
    Filed: February 15, 2002
    Date of Patent: March 23, 2004
    Assignee: Kubota Corporation
    Inventors: Kazuo Samejima, Akira Minoura, Yoshikazu Togoshi, Osami Fujiwara
  • Patent number: 6675567
    Abstract: A mid-mount type lawn tractor having idle wheels disposed at one end in a fore and aft direction of a vehicle body, drive wheels disposed at the other end in the fore and aft direction of the vehicle body, a mower unit connected to the vehicle body between the idle wheels and drive wheels. The lawn tractor includes a wheel support frame supporting the idle wheels and pivotably connected to the vehicle body. A pivotal movement of the wheel support frame relative to the vehicle body displaces the idle wheels relative to the vehicle body, to produce a running posture or a jack-up posture lifting at least part of the vehicle body. The pivotal movement of the wheel support frame is caused by a jack device.
    Type: Grant
    Filed: December 13, 2002
    Date of Patent: January 13, 2004
    Assignee: Kubota Corporation
    Inventors: Kazuo Samejima, Yoshikazu Togoshi, Yoshiyuki Esaki, Hironori Tsuchihashi, Yoshihiro Kawahara, Osami Fujiwara, Teruo Shimamura
  • Patent number: 6578656
    Abstract: A riding mower includes a pair of right and left propelling wheels, an engine disposed rearwardly of axles of the propelling wheels, a pair of right and left transmission cases corresponding to the propelling wheels and supporting the propelling wheels, respectively, a pair of right and left HSTs coupled to the transmission cases for outputting power thereto, respectively, a center case housing a power distributor for transmitting power from the engine to the pair of right and left HSTs, and a mower unit disposed forwardly of the propelling wheels. The center case is disposed forwardly of the axles of the propelling wheels.
    Type: Grant
    Filed: September 3, 1999
    Date of Patent: June 17, 2003
    Assignee: Kubota Corporation
    Inventors: Kazuo Samejima, Hironori Tsuchihashi, Yoshikazu Togoshi, Yoshihiro Kawahara, Teruo Shimamura, Osami Fujiwara, Yoshiyuki Esaki
  • Publication number: 20030079454
    Abstract: A mid-mount type lawn tractor having idle wheels disposed at one end in a fore and aft direction of a vehicle body, drive wheels disposed at the other end in the fore and aft direction of the vehicle body, a mower unit connected to the vehicle body between the idle wheels and drive wheels. The lawn tractor includes a wheel support frame supporting the idle wheels and pivotably connected to the vehicle body. A pivotal movement of the wheel support frame relative to the vehicle body displaces the idle wheels relative to the vehicle body, to produce a running posture or a jack-up posture lifting at least part of the vehicle body. The pivotal movement of the wheel support frame is caused by a jack device.
    Type: Application
    Filed: December 13, 2002
    Publication date: May 1, 2003
    Inventors: Kazuo Samejima, Yoshikazu Togoshi, Yoshiyuki Esaki, Hironori Tsuchihashi, Yoshihiro Kawahara, Osami Fujiwara, Teruo Shimamura
  • Publication number: 20030062212
    Abstract: A riding mower includes a pair of right and left propelling wheels, an engine disposed rearwardly of axles of the propelling wheels, a pair of right and left transmission cases corresponding to the propelling wheels and supporting the propelling wheels, respectively, a pair of right and left HSTs coupled to the transmission cases for outputting power thereto, respectively, a center case housing a power distributor for transmitting power from the engine to the pair of right and left HSTs, and a mower unit disposed forwardly of the propelling wheels. The center case is disposed forwardly of the axles of the propelling wheels.
    Type: Application
    Filed: September 3, 1999
    Publication date: April 3, 2003
    Inventors: KAZUO SAMEJIMA, HIRONORI TSUCHIHASHI, YOSHIKAZU TOGOSHI, YOSHIHIRO KAWAHARA, TERUO SHIMAMURA, OSAMI FUJIWARA, YOSHIYUKI ESAKI
  • Publication number: 20030046915
    Abstract: A riding tractor in which engine output is transmitted to a running device through a hydrostatic stepless transmission. The tractor has a braking device for acting on the running device, a first brake operating device and a second brake operating device operable independently of each other for operating the braking device, and a brake control device for linking control displacements from the first brake operating device and the second the brake operating device to the brake device.
    Type: Application
    Filed: February 15, 2002
    Publication date: March 13, 2003
    Applicant: KUBOTA CORPORATION
    Inventors: Kazuo Samejima, Akira Minoura, Yoshikazu Togoshi, Osami Fujiwara
  • Patent number: 6516597
    Abstract: A mid-mount type lawn tractor having idle wheels disposed at one end in a fore and aft direction of a vehicle body, drive wheels disposed at the other end in the fore and aft direction of the vehicle body, a mower unit connected to the vehicle body between the idle wheels and drive wheels. The lawn tractor includes a wheel support frame supporting the idle wheels and pivotably connected to the vehicle body. A pivotal movement of the wheel support frame relative to the vehicle body displaces the idle wheels relative to the vehicle body, to produce a running posture or a jack-up posture lifting at least part of the vehicle body. The pivotal movement of the wheel support frame is caused by a jack device.
    Type: Grant
    Filed: March 1, 2000
    Date of Patent: February 11, 2003
    Assignee: Kubota Corporation
    Inventors: Kazuo Samejima, Yoshikazu Togishi, Yoshiyuki Esaki, Hironori Tsuchihashi, Yoshihiro Kawahara, Osami Fujiwara, Teruo Shimamura
  • Patent number: 6470659
    Abstract: A four wheel drive working vehicle such as a front mower has a dual one-way clutch mechanism interlocked to right and left dirigible wheels. When the vehicle makes a turn in forward or backward running, the clutch mechanism breaks drive transmission only to an outer one of the dirigible wheels.
    Type: Grant
    Filed: March 22, 1999
    Date of Patent: October 29, 2002
    Assignee: Kubota Corporation
    Inventors: Teruo Shimamura, Osami Fujiwara
  • Publication number: 20010013218
    Abstract: A four wheel drive working vehicle such as a front mower has a dual one-way clutch mechanism interlocked to right and left dirigible wheels. When the vehicle makes a turn in forward or backward running, the clutch mechanism breaks drive transmission only to an outer one of the dirigible wheels.
    Type: Application
    Filed: March 22, 1999
    Publication date: August 16, 2001
    Inventors: TERUO SHIMAMURA, OSAMI FUJIWARA
  • Patent number: 6082086
    Abstract: A reel-type cutting unit including a reel blade for cutting grass in cooperation with a fixed blade. The reel blade is rotatable about a horizontal axis extending transversely of a vehicle body, to move from front to rear relative to the fixed blade with respect to a forward traveling direction of the vehicle body. The cutting unit has a main case surrounding the reel blade to define a space for carrying grass clippings in a rotating direction of the reel blade to a top level of the reel blade. A guide member is connected to the main case for receiving the grass clippings carried to the top level. The guide member defines a grass receiving space having a grass discharge opening. The grass discharge opening is connected to a grass catcher through a duct.
    Type: Grant
    Filed: April 17, 1998
    Date of Patent: July 4, 2000
    Assignee: Kubota Corporation
    Inventors: Yoshikazu Togoshi, Yoshiyuki Esaki, Yoshihiro Kawahara, Teruo Shimamura, Junichi Kitamura, Osami Fujiwara, Hideya Umemoto, Koji Fujiwara
  • Patent number: 6052973
    Abstract: A lawn tractor includes a vehicle body, a center reel-type cutting unit, and side reel-type cutting units arranged laterally of the center reel-type cutting unit with respect to a moving direction of the vehicle body, wherein a cutting track by the center reel-type cutting unit and cutting tracks by the side reel-type cutting units partly overlap one another. A first lift mechanism vertically movably connects the center reel-type cutting unit to the vehicle body, wherein the first lift mechanism is operable to raise and lower the center reel-type cutting unit without displacing the center reel-type cutting unit transversely of the moving direction. Second lift mechanisms vertically movably connect the side reel-type cutting units to the vehicle body, respectively, wherein the second lift mechanisms are operable to raise and lower the side reel-type cutting units without displacing the side reel-type cutting units transversely of the moving direction.
    Type: Grant
    Filed: January 20, 1998
    Date of Patent: April 25, 2000
    Assignee: Kubota Corporation
    Inventors: Hironori Tsuchihashi, Yoshikazu Togoshi, Koji Fujiwara, Yoshiyuki Esaki, Kazuo Samejima, Junichi Kitamura, Matsuo Tachibana, Teruo Shimamura, Osami Fujiwara, Yoshihiro Kawahara
  • Patent number: 5870889
    Abstract: A mower unit includes a blade housing, and a guide plate for dividing a grass clipping flow space formed in the blade housing, along a flowing direction into a first flow space and a second flow space communicating with each other in a downstream position with respect to the flowing direction. The blade housing has a discharge section for discharging grass clippings cut by cutting blades, in a predetermined direction along with air flows. The discharge section has an intake opening for drawing ambient air into the second flow space. The guide plate may be displaceable relative to the blade housing to vary a sectional passage area of the first flow space.
    Type: Grant
    Filed: March 21, 1997
    Date of Patent: February 16, 1999
    Assignee: Kubota Corporation
    Inventors: Yoshikazu Togoshi, Osami Fujiwara, Hideya Umemoto, Hironori Tsuchihashi, Yoshiyuki Esaki, Akio Matsui
  • Patent number: 5823285
    Abstract: A four wheel drive working vehicle having a hydraulic block for covering one side of a propelling transmission case, an engine, and an HST attached to a side of the hydraulic block remote from the transmission case. The HST includes an input shaft for transmitting drive from the engine, and an output shaft extending through the hydraulic block for transmitting the drive to a transmission line in the transmission case. The vehicle further includes a drive transmission mechanism for selectively transmitting the drive from the transmission line to rear wheels, and a transmission shaft for transmitting the drive between the drive transmission mechanism and the transmission line in the transmission case. The drive transmission mechanism is attached to the side of the hydraulic block where the HST is attached. The transmission shaft extends through the hydraulic block.
    Type: Grant
    Filed: March 29, 1996
    Date of Patent: October 20, 1998
    Assignee: Kubota Corporation
    Inventors: Hironori Tsuchihashi, Yoshikazu Togoshi, Osami Fujiwara, Teruo Shimamura, Akio Matsui, Hideya Umemoto, Kenichi Chujo, Niro Bando
  • Patent number: 5822960
    Abstract: A reel mower having side reel mower units and a center reel mower unit connected to a vehicle body to be vertically movable between a lower position for a grass cutting operation and an upper position for a non-operational run. The side reel mower units and center reel mower unit have reels driven by reel drives under control of a control mechanism. A forcible stopping device is provided for forcibly stopping the reel drives of the reel mower units with priority over control of the reel drives by the control mechanism when the side reel mower units and center reel mower unit are all in the upper positions.
    Type: Grant
    Filed: June 5, 1997
    Date of Patent: October 20, 1998
    Assignee: Kubota Corporation
    Inventors: Junichi Kitamura, Matsuo Tachibana, Koji Fujiwara, Osami Fujiwara, Kazuo Samejima, Junji Miyata, Yoshikazu Togoshi, Hironori Tsuchihashi, Yoshiyuki Esaki