Patents by Inventor Tuyosi Yosida

Tuyosi Yosida 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).

  • Support roller of crawler type traveling apparatus
    Patent number: 7237853
    Abstract: The invention provides a support roller of a crawler type traveling apparatus which can prevent a rotational resistance from being increased by the soil or the like, and can stably achieve a function serving as the support roller for a long time. The invention provides a support roller of a crawler type traveling apparatus provided with a shaft (1), a support portion (2) supporting a center portion in an axial direction of the shaft (1), and a pair of rollers (3, 3) respectively arranged in both end portions (1a, 1a) of the shaft (1) and rotating together with the shaft (1). A mounting seat portion (36) of the support portion (2) to a track frame (51) is set within a range (S) of a roller outer shape formed by a pair of rollers (3, 3) in a plan view.
    Type: Grant
    Filed: November 1, 2004
    Date of Patent: July 3, 2007
    Assignee: Komatsu Ltd.
    Inventors: Teiji Yamamoto, Tuyosi Yosida, Syouta Murakami
  • Support roller of crawler type traveling apparatus
    Publication number: 20050212358
    Abstract: The invention provides a support roller of a crawler type traveling apparatus which can prevent a rotational resistance from being increased by the soil or the like, and can stably achieve a function serving as the support roller for a long time. The invention provides a support roller of a crawler type traveling apparatus provided with a shaft (1), a support portion (2) supporting a center portion in an axial direction of the shaft (1), and a pair of rollers (3, 3) respectively arranged in both end portions (1a, 1a) of the shaft (1) and rotating together with the shaft (1). A mounting seat portion (36) of the support portion (2) to a track frame (51) is set within a range (S) of a roller outer shape formed by a pair of rollers (3, 3) in a plan view.
    Type: Application
    Filed: November 1, 2004
    Publication date: September 29, 2005
    Applicant: KOMATSU LTD.
    Inventors: Teiji Yamamoto, Tuyosi Yosida, Syouta Murakami