Patents by Inventor Keishiro Nishi

Keishiro Nishi 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: 20060113139
    Abstract: A work vehicle includes an engine, a PTO shaft driven by power from the engine, an operator's seat, an operator's presence sensor for detecting presence/absence of an operator at the operator's seat, and an automatic engine stop unit operable to automatically stop the engine in response to detection of the operator's absence at the operator's seat. The work vehicle includes a utility member for the vehicle selectively movable between a use position and a non-use position, a non-use state detecting sensor for detecting movement of the utility member to the non-use position, and an override unit operable to override the automatic engine stop function of the automatic engine stop unit, the override unit providing an override signal to the automatic engine stop unit in response to detection by the non-use state detecting sensor of the movement of the utility member to the non-use position.
    Type: Application
    Filed: January 4, 2006
    Publication date: June 1, 2006
    Inventors: Keishiro Nishi, Masao Takagi, Satoshi Machida, Kenji Kato, Masashi Osuga
  • Patent number: 7007768
    Abstract: A work vehicle has an engine (1), a PTO shaft (6, 7) driven by power from the engine, an operator's seat (19), an operator's presence sensor (26) for detecting presence/absence of an operator at the operator's seat, and an automatic engine stop unit (39) operable to automatically stop the engine in response to detection of the operator's absence at the operator's seat. The work vehicle includes a utility member (A) for the vehicle selectively movable between a use position and a non-use position, a non-use state detecting sensor (27) for detecting movement of the utility member to the non-use position, and an override unit (40) operable to override the automatic engine stop function of the automatic engine stop unit, the override unit providing an override signal to the automatic engine stop unit in response to detection by the non-use state detecting sensor of the movement of the utility member to the non-use position.
    Type: Grant
    Filed: March 25, 2003
    Date of Patent: March 7, 2006
    Assignee: Kubota Corporation
    Inventors: Keishiro Nishi, Masao Takagi, Satoshi Machida, Kenji Kato, Masashi Osuga
  • Patent number: 6722464
    Abstract: A frameless type working vehicle includes an intermediate vehicle body 5 acting as a body forming member for interconnecting a front vehicle body 3 and a rear vehicle body 4. The intermediate vehicle body is formed of a case block 10 housing a hydrostatic stepless transmission (HST) 20. The case block 10 includes, formed integral with one another, a small diameter portion 11 connected to the rear vehicle body 4 and providing case walls for a pump P and a motor M of HST 20, a large diameter portion 12 connected to the front vehicle body 3 and having an upper edge at a higher level than an upper surface of the small diameter portion 11, and a transitional portion 12A disposed between the small diameter portion 11 and the large diameter portion 12. The large diameter portion 12 defines an accommodating space S1 for a main clutch 9 that receives drive from an engine E.
    Type: Grant
    Filed: August 27, 2001
    Date of Patent: April 20, 2004
    Assignee: Kubota Corporation
    Inventors: Yasunobu Nakatani, Kenji Kato, Isamu Morimoto, Atsushi Shinkai, Keishiro Nishi
  • Publication number: 20040026150
    Abstract: A work vehicle has an engine (1), a PTO shaft (6, 7) driven by power from the engine, an operator's seat (19), an operator's presence sensor (26) for detecting presence/absence of an operator at the operator's seat, and an automatic engine stop unit (39) operable to automatically stop the engine in response to detection of the operator's absence at the operator's seat. The work vehicle includes a utility member (A) for the vehicle selectively movable between a use position and a non-use position, a non-use state detecting sensor (27) for detecting movement of the utility member to the non-use position, and an override unit (40) operable to override the automatic engine stop function of the automatic engine stop unit, the override unit providing an override signal to the automatic engine stop unit in response to detection by the non-use state detecting sensor of the movement of the utility member to the non-use position.
    Type: Application
    Filed: March 25, 2003
    Publication date: February 12, 2004
    Applicant: KUBOTA CORPORATION
    Inventors: Keishiro Nishi, Masao Takagi, Satoshi Machida, Kenji Kato, Masashi Osuga
  • Publication number: 20020139600
    Abstract: A frameless type working vehicle includes an intermediate vehicle body 5 acting as a body forming member for interconnecting a front vehicle body 3 and a rear vehicle body 4. The intermediate vehicle body is formed of a case block 10 housing a hydrostatic stepless transmission (HST) 20. The case block 10 includes, formed integral with one another, a small diameter portion 11 connected to the rear vehicle body 4 and providing case walls for a pump P and a motor M of HST 20, a large diameter portion 12 connected to the front vehicle body 3 and having an upper edge at a higher level than an upper surface of the small diameter portion 11, and a transitional portion 12A disposed between the small diameter portion 11 and the large diameter portion 12. The large diameter portion 12 defines an accommodating space S1 for a main clutch 9 that receives drive from an engine E.
    Type: Application
    Filed: August 27, 2001
    Publication date: October 3, 2002
    Applicant: KUBOTA CORPORATION
    Inventors: Yasunobu Nakatani, Kenji Kato, Isamu Morimoto, Atsushi Shinkai, Keishiro Nishi
  • Patent number: 6250414
    Abstract: To provide a working vehicle with a simple body structure, an HST case containing a hydraulic stepless transmission is disposed between an engine adjacent one end in a fore and aft direction of a vehicle body, and a propelling transmission case disposed adjacent the other end in the fore and aft direction. The HST case, with the engine and propelling transmission case, forms the vehicle body. With this construction, a driving deck is located at a relatively low level so that the driver may board and alight from the deck with ease. Despite the low level of the deck, the bottom of the vehicle body is at a relatively high level to be free from contact with projections on unleveled terrain. Frame strength may be increased where the HST case is connected between a main clutch housing connected to the rear of the engine and the propelling transmission case.
    Type: Grant
    Filed: July 28, 1998
    Date of Patent: June 26, 2001
    Assignee: Kubota Corporation
    Inventors: Kenichi Sato, Yasunobu Nakatani, Hiroshi Miyake, Keishiro Nishi, Akiyoshi Ono, Motonobu Nishii, Yoichi Sugihara, Shota Nagasawa, Kiyoshi Hanamoto