1
Aurel V Stan: 3-dimensional pressure sensor. The Goodyear Tire & Rubber Company, David E Wheeler, August 30, 1994: US05341687 (21 worldwide citation)

Use of ultrasonic stimulation together with a pressure sensitive piezoelectric material in a sensor makes it possible to obtain three dimensional pressure measurements on an object in one operation. A piezoelectric material which is manufactured with a conductive surface on both sides, and shear ori ...


2
Stan Aurel Vincent: 3-dimensional pressure sensor.. Goodyear Tire & Rubber, May 25, 1994: EP0598301-A2 (4 worldwide citation)

Use of ultrasonic stimulation together with a pressure sensitive piezoelectric material in a sensor makes it possible to obtain three dimensional pressure measurements on an object in one operation. A piezoelectric material which is manufactured with a conductive surface on both sides, and shear ori ...