Frequency discriminator with vibrating magnetic mass

• US 3,213,331 A
• Filed: 04/14/1961
• Issued: 10/19/1965
• Est. Priority Date: 04/14/1961
• Status: Expired due to Term

• Current Assignee: Emmor V. Schneider, John Mihaila
• Original Assignee: Emmor V. Schneider, John Mihaila
• Inventors: Schneider, Emmor V., Mihaila, John
• Application Number:
  US04/103,058
• Time in Patent Office: 1,649 Days
• US Class Current: 361/184
• CPC Class Codes: H03D 3/16 by means of electromechanical resonators

Claims

1. A FREQUENCY DISCRIMINATOR, COMPRISING, IN COMBINATION, A BASE, A MASS OF MAGNETIC MATERIAL HAVING AN AXIS, TORSION SPRING MEANS ACTING AXIALLY ON SAID MASS AND MOUNTING SAID MASS RELATIVE TO SAID BASE, SAID MASS AND SPRING ASSEMBLY HAVING A NATURAL TORSIONAL VIBRATION FREQUENCY AS DETERMINED BY THE MOMENT OF INERTIA AND SPRING CONSTANT THEREOF, SAID MASS ADAPTED TO HAVE POLES DISPOSED TRANSVERSELY OF SAID AXIS ON A SECOND AXIS, WINDING MEANS HAVING FIRST AND SECOND COILS AND HAVING AN AXIS TRANSVERSE TO SAID SECOND AXIS, INPUT MEANS TO IMPRESS A PERIODIC VOLTAGE ON SAID WINDING MEANS TO ESTABLISH A FIRST ALTERNATING FIELD TRANSVERSE TO SAID SECOND AXIS TO ACT ON SAID MASS, MEANS TO ESTABLISH A SECOND FIELD IN SAID MASS COOPERATING WITH SAID FIRST FIELD TO IMPART TORSONAL VIBRATIONS TO SAID MASS, SAID FIRST AND SECOND COILS BEING INDUCTIVELY COUPLED ESSENTIALLY ONLY THROUGH TORSIONAL VIBRATIONS OF SAID MASS, AND MEANS TO OBTAIN AN OUTPUT SIGNAL FROM SAID SECOND COIL AT A FREQUENCY IN ACCORDANCE WITH THE FREQUENCY OF SAID INPUT WHEN THE PERIODIC FREQUENCY OF SAID INPUT VOLTAGE AGREES WITH THE NATURAL TORSIONAL VIBRATION FREQUENCY OF SAID MASS AND SPRING ASSEMBLY AND SAID MASS IS URGED INTO TORSIONAL VIRBATIONS OF A GIVEN AMPLITUDE.