×

Piezoelectric pressure sensor

  • US 5,209,125 A
  • Filed: 03/27/1991
  • Issued: 05/11/1993
  • Est. Priority Date: 12/22/1989
  • Status: Expired due to Term
First Claim
Patent Images

1. A piezoelectric differential pressure sensor comprising:

  • a sensor housing having an interior including a first and a second cavity interconnected by a channela spool-like actuator having an axle slideably disposed in the channel for allowing each of two flange members, connected proximate to each end of the axle, to shuttle back and forth relative to the sensor housing in response to forces applied to the flange memberspiezoelectric sensing means disposed in the interior between the flange members and the sensor housing, for generating signals in response to force mechanically applied to the sensing means by the flange members of the actuator, andmeans for controlling migration of oxygen from the piezoelectric sensing means to retard aging thereof.

View all claims
  • 6 Assignments
Timeline View
Assignment View
    ×
    ×