Patents by Inventor Akiyoshi Okayasu

Akiyoshi Okayasu 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: 6454051
    Abstract: An oil lubricating system mounted on a vibrating plate compactor has a center chamber and outer chambers in the housing partitioned by a pair of bearings on the left and the right axially attached to the rotor shaft in the housing, and the oil in the housing is supplied not only to the center chamber but also to the outside chambers sufficiently by the rotation of the eccentric rotor to thereby impart uniform lubrication to the inner and the outer edges of the bearings for improving durability. As ameans to supply the oil from the center chamber to the outside chambers, hollow oil supply passages are provided on the left and the right rotor shafts axially mounted to the bearings to let the oil in the housing flow from the center chamber to the outer chambers.
    Type: Grant
    Filed: November 2, 2000
    Date of Patent: September 24, 2002
    Assignee: Mikasa Sangyo Co., Ltd.
    Inventor: Akiyoshi Okayasu
  • Patent number: 4726762
    Abstract: A wick actuating device of the lever actuation type for an oil burner is disclosed which is capable of not only vertically moving a wick but variably setting the ignition position of the wick as desired. The wick actuating device includes an operation lever loosely fitted on a wick operating shaft, a shaft actuation lever fixedly fitted on the shaft and a connection mechanism for connecting both levers to each other. The connection mechanism includes a slit formed at the operation lever and a pin slidably mounted on the shaft actuation lever and movably fitted in the slit. The slit is formed to be oblique with respect to the sliding direction of the pin so that the operation lever is engaged with the shaft actuation lever through the slit and pin at an angle which is varied depending upon the position of the pin in the slit.
    Type: Grant
    Filed: June 2, 1986
    Date of Patent: February 23, 1988
    Assignee: Toyotomi Kogyo Co., Ltd.
    Inventors: Kazuharu Nakamura, Akiyoshi Okayasu
  • Patent number: 4424019
    Abstract: A device for vertically moving a wick in an oil burner is disclosed which is capable of constantly ensuring the normal combustion operation of the oil burner. The device includes a drive shaft having a pinion, a rack disposed adjacent to a wick receiving chamber of the burner which is engaged with the pinion and connected to a wick to vertically move it when the drive shaft is rotated, and a stop member for stopping the movement of the rack with respect to the pinion only when the wick is lowered to the minimum normal combustion position to thereby ensure the normal combustion.
    Type: Grant
    Filed: July 7, 1981
    Date of Patent: January 3, 1984
    Assignee: Toyotomi Kogyo Co., Ltd.
    Inventors: Kazuharu Nakamura, Yoshio Mito, Akiyoshi Okayasu, Kazuhiko Takeuchi