US Patent 7401522 Pressure sensor using compressible sensor body

A pressure sensor including a deformable sensor body formed of a compressible material. A deformation sensor is embedded in the deformable sensor body and has an electrical property which changes in response to deformation of the deformable sensor body. Electrical connections which extend from outside the deformable sensor body to the embedded deformation sensor to provide an indication of an applied line pressure or differential pressure.