Patents by Inventor Yuzo Ooka

Yuzo Ooka 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).

  • Patent number: 4650055
    Abstract: A push rod extends through the main shaft of a change speed gear transmission to release a friction clutch on that shaft. The other end of the push rod is engaged by a hydraulic actuator. An oil seal assembly for the push rod is prevented from being damaged by leakage of hydraulic oil, and this is accomplished by means of an air gap and vent between the hydraulic actuator and the oil seal assembly.
    Type: Grant
    Filed: March 8, 1985
    Date of Patent: March 17, 1987
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventor: Yuzo Ooka
  • Patent number: 4518070
    Abstract: A push rod extends through the main shaft of a change speed gear transmission to release a friction clutch on that shaft. The other end of the push rod is engaged by a hydraulic actuator. An oil seal assembly for the push rod is prevented from being damaged by leakage of hydraulic oil, and this is accomplished by means of an air gap and vent between the hydraulic actuator and the oil seal assembly.
    Type: Grant
    Filed: June 10, 1982
    Date of Patent: May 21, 1985
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventor: Yuzo Ooka
  • Patent number: 4491031
    Abstract: A change speed gear mechanism for a motorcycle is controlled by a shift drum mounted to turn. First and second cam plates are coaxially fixed to the shift drum and means are provided for turning the cam plates for moving the shift drum in either direction in equal angular increments between a high speed position and a low speed position, each angular increment being larger than the angular value calculated by dividing 360.degree. by the total number of gear ratios provided by the speed change gear mechanism.
    Type: Grant
    Filed: May 10, 1982
    Date of Patent: January 1, 1985
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventor: Yuzo Ooka