Patents by Inventor Yoshiaki Ohgoshi

Yoshiaki Ohgoshi 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: 4381867
    Abstract: A mechanical seal made in a unit construction in which a seal unit case is fitted into and held by the inner periphery of a seal housing in a non-rotatable but axially slidable manner, the seal housing houses a rotary ring disposed on a rotary shaft in a non-rotatable but axially slidable manner, and a stationary ring in contact with the rotary ring at the sealing end surfaces thereof is securely fixed to the seal housing. The mechanical seal can be automatically moved to a position where a first fluid and a second fluid are balanced in pressure in response to a difference in pressure between these two fluids.
    Type: Grant
    Filed: March 11, 1982
    Date of Patent: May 3, 1983
    Assignee: Nippon Pillar Packing Co., Ltd.
    Inventor: Yoshiaki Ohgoshi