Patents Represented by Attorney, Agent or Law Firm Adama & Wilks
  • Pressure adjuster valve and gas compressor using the same
    Patent number: 6629830
    Abstract: A pressure adjuster valve has a body having a communication passage for connecting a first chamber in fluid communication with a second chamber and a truncated conical-shaped valve seat portion disposed at one end of the communication passage. A valve element is disposed within the communication passage for undergoing movement therein to engage the valve seat portion of the body. A biasing member normally biases the valve element in a direction away from the valve seat portion.
    Type: Grant
    Filed: July 20, 2001
    Date of Patent: October 7, 2003
    Assignee: Seiko Instruments Inc.
    Inventors: Toru Takahashi, Yasuhide Kumakura, Muneaki Osada