Patents Assigned to Pittsburgh Brass Manufacturing Company
  • Shuttle valves and system for fluid control
    Patent number: 4512781
    Abstract: An apparatus system for drying gases to provide a reverse flow to and from a pair of absorbent beds is automatically solely controlled by a unitary inlet logic shuttle valve unit and by a unitary outlet logic shuttle valve unit. Each valve unit employs positive acting slide valve elements that operate in a smooth and effective manner.
    Type: Grant
    Filed: November 14, 1983
    Date of Patent: April 23, 1985
    Assignee: Pittsburgh Brass Manufacturing Company
    Inventors: Michael J. Caralli, Gary W. Friedline