Patents by Inventor Kaichi Yamada

Kaichi Yamada 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).

  • Rotary vane compressor with valve control of oil to bias the vanes
    Patent number: 4342547
    Abstract: An improved vane type rotary compressor provided with a control mechanism of a lubricating oil supply passage by which the lubricating oil supply passage is arranged to be opened during operation of the compressor, and to be closed during shut-down of the compressor for obtaining a sufficient amount of lubricating oil supply during operation and also for preventing reverse rotation during shut-down of the compressor.
    Type: Grant
    Filed: April 1, 1980
    Date of Patent: August 3, 1982
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kaichi Yamada, Yoshiyuki Morikawa, Katuharu Fujio, Koichi Yoshihiro, Toshio Matsuda, Tatsuhisa Taguchi
  • Refrigeration lubricating oil compositions
    Patent number: 4267064
    Abstract: Oil compositions are disclosed for effective use in the lubrication of rotary-type compressor for refrigeration equipment. The composition essentially comprises a polyglycol oil blended with specified amounts of at least one of additives or compounds of the group consisting of glycidyl ether type epoxy compounds, epoxidized fatty acid monoesters and epoxidized vegetable oils.
    Type: Grant
    Filed: October 24, 1979
    Date of Patent: May 12, 1981
    Assignees: Nippon Oil Company, Ltd., Matsushita Electric Industrial Co., Ltd.
    Inventors: Umekichi Sasaki, Masaaki Tsunemi, Kaichi Yamada, Yoshiyuki Morikawa