Patents by Inventor Hirokatsu Niitsu

Hirokatsu Niitsu 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).

  • Endless track and a manufacturing method thereof
    Patent number: 6913330
    Abstract: An endless track includes an iron link belt, a continuous pad, and a connecting device. The iron link belt includes a link unit assembly constructed of a plurality of link units connected to each other. Each link unit includes a pair of links. The iron link belt may include a plate welded to the pair of links and extending perpendicularly to a direction in which the link unit assembly extends. The continuous pad includes the same number of core metal plates as that of the link units and a single urethane rubber belt covering and being attached to a ground opposing surface of each of the core metal plates. The urethane rubber belt extends continuously over all of the core metal plates. The urethane rubber belt may include a small thickness portion positioned between two adjacent core metal plates. The connecting device connects the iron link belt and the continuous pad.
    Type: Grant
    Filed: September 20, 2001
    Date of Patent: July 5, 2005
    Assignee: Topy Kogyo Kabushiki Kaisha
    Inventors: Hiroyuki Takeno, Hirokatsu Niitsu, Kiyokazu Niwa, Makoto Takagi, Masaki Ohara
  • Endless track and a manufacturing method thereof
    Publication number: 20020157927
    Abstract: An endless track includes an iron link belt, a continuous pad, and a connecting device. The iron link belt includes a link unit assembly constructed of a plurality of link units connected to each other. Each link unit includes a pair of links. The iron link belt may include a plate welded to the pair of links and extending perpendicularly to a direction in which the link unit assembly extends. The continuous pad includes the same number of core metal plates as that of the link units and a single urethane rubber belt covering and being attached to a ground opposing surface of each of the core metal plates. The urethane rubber belt extends continuously over all of the core metal plates. The urethane rubber belt may include a small thickness portion positioned between two adjacent core metal plates. The connecting device connects the iron link belt and the continuous pad.
    Type: Application
    Filed: September 20, 2001
    Publication date: October 31, 2002
    Inventors: Hiroyuki Takeno, Hirokatsu Niitsu, Kiyokazu Niwa, Makoto Takagi, Masaki Ohara
  • Endless track and a manufacturing method thereof
    Patent number: 6460945
    Abstract: An endless track includes an iron link belt, a continuous pad, and a connecting device. The iron link belt includes a link unit assembly constructed of a plurality of link units connected to each other. Each link unit includes a pair of links. The iron link belt may include a plate welded to the pair of links and extending perpendicularly to a direction in which the link unit assembly extends. The continuous pad includes the same number of core metal plates as that of the link units, and a single rubber belt covering and being vulcanization-adhered to a ground opposing surface of each of the core metal plates. The rubber belt extends continuously over all of the core metal plates. The rubber belt may include a small thickness portion positioned between two adjacent core metal plates. The connecting device connects the iron link belt and the continuous pad.
    Type: Grant
    Filed: March 22, 2001
    Date of Patent: October 8, 2002
    Assignee: Topy Kogyo Kabushiki Kaisha
    Inventors: Hiroyuki Takeno, Masahiro Nakajima, Kiyokazu Niwa, Makoto Takagi, Hirokatsu Niitsu, Isao Yoshida, Akihiro Koishi
  • Endless track and a manufacturing method thereof
    Publication number: 20010026099
    Abstract: An endless track includes an iron link belt, a continuous pad, and a connecting device. The iron link belt includes a link unit assembly constructed of a plurality of link units connected to each other. Each link unit includes a pair of links. The iron link belt may include a plate welded to the pair of links and extending perpendicularly to a direction in which the link unit assembly extends. The continuous pad includes the same number of core metal plates as that of the link units, and a single rubber belt covering and being vulcanization-adhered to a ground opposing surface of each of the core metal plates. The rubber belt extends continuously over all of the core metal plates. The rubber belt may include a small thickness portion positioned between two adjacent core metal plates. The connecting device connects the iron link belt and the continuous pad.
    Type: Application
    Filed: March 22, 2001
    Publication date: October 4, 2001
    Inventors: Hiroyuki Takeno, Masahiro Nakajima, Kiyokazu Niwa, Makoto Takagi, Hirokatsu Niitsu, Isao Yoshida, Akihiro Koishi