A. c. transducers and variometers

• US 3,090,933 A
• Filed: 09/15/1958
• Issued: 05/21/1963
• Est. Priority Date: 11/13/1957
• Status: Expired due to Term

• Current Assignee: Jacques Henry-Baudot
• Original Assignee: Jacques Henry-Baudot
• Inventors: JACQUES HENRY-BAUDOT
• Application Number:
  US03/761,143
• Time in Patent Office: 1,709 Days
• US Class Current: 336/120
• CPC Class Codes: H01F 21/06 by movement of core or part of core relative to the windings as a whole
• CPC Class Codes: H01F 29/12 having movable coil, winding, or part thereof; having movable shield

Claims

1. AN ALTERNATING CURRENT TRANSDUCER DEVICE COMPRISING:

FIRST AND SECOND MAGNETIC CORE MEMBERS, EACH HAVING ON ONE FACE THEREOF AN ANNULAR SURFACE CONSISTING OF A SINGLE FLAT PLANE, SAID CORE MEMBERS BEING MOUNTED WITH SAID ANNULAR SURFACES IN OPPOSED PARALLEL RELATION AND ON A COMMON AXIS, SAID SURFACE THUS DEFINING THEREBETWEEN A NORROW ANNULAR AIR GAP;

A FIRST ELECTRIC WINDING BONDED FLAT TO SAID ANNULAR SURFACE OF SAID FIRST CORE MEMBER AND INCLUDING AT LEAST A PAIR OF COILS ARRANGED ON OPPOSITE SIDES OF SAID COMMON AXIS, EACH COIL COMPRISING A PLURALITY OF TURNS WOUND ABOUT A COMMON COIL AXIS AND COVERING A SEPARATE SECTORIAL PORTION OF THE ANNULAR SURFACE OF SAID FIRST CORE MEMBER, ADJACENT COILS BEING OPPOSITELY WOUNDED WITH RESPECT TO EACH OTHER AND ALL COILS BEING SERIALLY CONNECTED;

A SECOND ELECTRIC WINDING BONDED FLAT TO SAID ANNULAR SURFACE OF SAID SECOND CORE MEMBER AND INCLUDING A PLURALITY OF COILS EQUAL IN NUMBER TO A MULTIPLE OF THE NUMBER OF COILS IN SAID FIRST WINDING, THE COILS OF SAID SECOND WINDING BEING EQUALLY DISTRIBUTED ABOUT SAID COMMON AXIS AND EACH COMPRISING A PLURALITY OF TURNS WOUND ABOUT A COMMON COIL AXIS AND COVERING A SEPARATE SECTORIAL PORTION OF THE ANNULAR SURFACE OF SAID SECOND CORE MEMBER, ADJACENT COILS OF SAID SECOND WINDING BEING OPPOSITELY WOUND AND ALL BEING SERIALLY CONNECTED IN A COMMON CIRCUIT AND MEANS FOR VARYING THE COUPLING BETWEEN SAID FIRST AND SECOND WINDINGS.