Piezoelectric voltage source

Claim 1

A PIEZOELECTRIC VOLTAGE SOURCE COMPRISING: HOUSING MEANS RIGID AGAINST LONGITUDINAL EXPANSION; PIEZOELECTRIC ELEMENT MEANS HAVING FIRST AND SECOND END FACES AND A LONGITUDINAL AXIS NORMAL THERETO, SAID ELEMENT MEANS BEING LONGITUDINALLY MOUNTED IN SAID HOUSING WITH SAID FIRST END FACE THEREOF RESTRAINED BY SAID HOUSING MEANS TO PREVENT ITS MOVEMENT AND WITH SAID SECOND END FACE THEREOF SPACED FROM SAID HOUSING; ELECTRICAL INSULATING MEANS INSULATING SAID PIEZOELECTRIC ELEMENT MEANS; CAM MEANS OF A GIVEN LONGITUDINAL LENGTH MOUNTED ALONG SAID AXIS AND BEING IN EFFECTIVE ENGAGEMENT WITH SAID PIEZOELECTRIC ELEMENT MEANS AND IN EFFECTIVE BRACING ENGAGEMENT WITH SAID HOUSING MEANS, SAID CAM MEANS HAVING A ROTATABLE CAM PORTION, A COOPERATING CAM PORTION AND AN ACTUATING MEANS CONNECTED TO SAID ROTATABLE CAM PORTION, AT LEAST ONE OF SAID CAM PORTIONS HAVING A CAM SURFACE INCLINED RELATIVE TO THE LONGITUDINAL AXIS OF SAID PIEZOELECTRIC ELEMENT MEANS AND IN EFFECTIVE BEARING ENGAGEMENT WITH A COOPERATING CAM SURFACE ON THE OTHER CAM PORTION, WHEREBY UPON CYCLIC MOTION OF SAID ACTUATING MEANS SAID ROTATABLE PORTION ROTATES FIRST IN ONE DIRECTION AND THEN IN THE REVERSE DIRECTION TO INCREASE THE GIVEN LONGITUDINAL LENGTH OF SAID CAM MEANS AND TO THEN RETURN SAID CAM MEANS TO ITS GIVEN LENGTH TO SQUEEZE AND RELEASE SAID PIEZOELECTRIC ELEMENT MEANS.