Patents by Inventor Shiegeru Oyokota

Shiegeru Oyokota 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).

  • Self-propelled working robot having horizontally movable work assembly retracting in different speed based on contact sensor input on the assembly
    Patent number: 7660650
    Abstract: The present invention relates to a self-propelled working robot, including a first distance sensor 4a and a second distance sensor 4b (4c) for measuring the distance to an obstacle W in front of the robot. The robot includes first determination means for comparing a first measured distance Dc to the obstacle obtained by the first distance sensor 4a with a predetermined first threshold value to determine the proximity to the obstacle W, second determination means for comparing a second measured distance Dr (DL) to the obstacle W obtained by the second distance sensor 4b (4c) with a predetermined second threshold value to determine the proximity to the obstacle, and changing means for changing the first or second threshold value based on information regarding an inclination angle of the obstacle W obtained from the first and second measured distances.
    Type: Grant
    Filed: October 5, 2004
    Date of Patent: February 9, 2010
    Assignee: Figla Co., Ltd.
    Inventors: Nobukazu Kawagoe, Shiegeru Oyokota
  • Self-propelled working robot
    Publication number: 20070032904
    Abstract: The present invention relates to a self-propelled working robot, including a first distance sensor 4a and a second distance sensor 4b (4c) for measuring the distance to an obstacle W in front of the robot. The robot includes first determination means for comparing a first measured distance Dc to the obstacle obtained by the first distance sensor 4a with a predetermined first threshold value to determine the proximity to the obstacle W, second determination means for comparing a second measured distance Dr (DL) to the obstacle W obtained by the second distance sensor 4b (4c) with a predetermined second threshold value to determine the proximity to the obstacle, and changing means for changing the first or second threshold value based on information regarding an inclination angle of the obstacle W obtained from the first and second measured distances.
    Type: Application
    Filed: October 5, 2004
    Publication date: February 8, 2007
    Inventors: Nobukazu Kawagoe, Shiegeru Oyokota