Patents by Inventor Akiyoshi Higashiyama

Akiyoshi Higashiyama 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).

  • Suction mechanism of a fluid displacement apparatus
    Patent number: 5660538
    Abstract: A fluid displacement apparatus includes a housing having a fluid inlet and fluid outlet. A suction chamber is formed between the first end of the displacement mechanism and the housing and communicates with the fluid inlet port. A discharge chamber is formed between the second end of the displacement mechanism and the housing and communicates with a hollow space. The hollow space is created between the inner block and the housing and communicates with the outlet port. Sealing devices are disposed between the suction chamber and the fluid inlet port for sealing the mating surfaces between the suction chamber and the fluid inlet port. The suction mechanism of the fluid displacement apparatus is thus easily assembled.
    Type: Grant
    Filed: December 8, 1995
    Date of Patent: August 26, 1997
    Assignee: Sanden Corporation
    Inventors: Akiyoshi Higashiyama, Masaaki Fujita