Patents by Inventor Isamu Nagayoshi

Isamu Nagayoshi 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).

  • Crusher having a stationary jaw body and a movable jaw body
    Patent number: 5361999
    Abstract: A crusher-is disposed at a distal end of an operating boom of a construction vehicle. The crusher permits the breaking of a crushed mass of natural stone by means of a breaking force occurring between a stationary jaw body and a movable jaw body as the movable jaw body is closed toward the stationary jaw body. A flat auxiliary member is replaceably disposed on the stationary jaw body opposing the movable jaw body so as to break the crushed mass into smaller pieces. The distal end of the stationary jaw body projects longer than the distal end of the movable jaw body to facilitate the raking out of the crushed masses obtained in a blasting operation.
    Type: Grant
    Filed: June 9, 1993
    Date of Patent: November 8, 1994
    Assignee: Kabushiki Kaisha Sakato Kosakusho
    Inventors: Seiichi Sakato, Yukio Yamashita, Chikai Fujitaka, Kunihiko Matsui, Isamu Nagayoshi, Tadahiko Nagase, Hiroo Koyanagi, Yuuji Nagasawa