Patents Assigned to A. K. Allen Company
  • Piezoelectric valve
    Patent number: 4903732
    Abstract: A piezoelectric valve for controlling fluid flow through valve ports comprises a fluidtight valve body and a diaphragm. The valve body defines valve ports, and the diaphragm includes a plurality of piezoelectric members, the members being adapted to be selectively piezoelectrically deflected in opposite directions in a plane of operation thereof to produce a cumulative excursion to selectively block or unblock the valve ports. The enhanced cumulative excursion enables valve ports of greater cross-sectional area to be employed.
    Type: Grant
    Filed: January 19, 1989
    Date of Patent: February 27, 1990
    Assignee: A. K. Allen Company
    Inventor: Alton K. Allen