Electromagnetic device with potted coil

• US 3,201,729 A
• Filed: 02/26/1960
• Issued: 08/17/1965
• Est. Priority Date: 02/26/1960
• Status: Expired due to Term

• Current Assignee: De Musset Alfred, Roger Lacour, Serge Blanchi
• Original Assignee: De Musset Alfred, Roger Lacour, Serge Blanchi
• Inventors: SERGE BLANCHI, DE MUSSET ALFRED, Lacour, Roger
• Application Number:
  US04/011,272
• Time in Patent Office: 1,999 Days
• US Class Current: 336/83
• CPC Class Codes: H01F 2017/048 with encapsulating core, e.g. made of resin and magnetic powder
• CPC Class Codes: H01F 27/255 made from particles H01F27/26 takes precedence
• CPC Class Codes: H01F 41/0206 Manufacturing of magnetic cores by mechanical means magnetic cores per se H01F27/24
• CPC Class Codes: H01F 41/0246 Manufacturing of magnetic circuits by moulding or by pressing powder magnetic cores made by moulding or by pressing powder H01F27/255; soft magnetic particles H01F1/20, H01F1/36
• CPC Class Codes: H01F 7/06 Electromagnets; Actuators including electromagnets electric coils H01F5/00; devices for holding workpieces using electric force B23Q3/15; load-engaging elements for lifting articles electromagnetically B66C1/06; electromagnetic couplings F16D27/00; magnetic brakes F16D63/002; electromagnetically operated valves F16K11/24, F16K31/00; analysing materials by magnetic means G01N27/72, G01N27/80; electromagnets for winding mechanical clocks G04C1/02; electromagnetic relays H01H51/00; windings for salient poles of dynamo-electric machines H02K3/18; electromagnets for telegraphic communication H04L; for arc lamps H05B31/28
• CPC Class Codes: H01H 2050/166 wherein the magnetic circuit parts are molded in a magnetic plastic material

Claims

1. AN ELECTROMAGNETIC DEVICE COMPRISING A UNITARY BODY CONSISTING OF A NON-CONDUCTIVE MASS OF A SYNTHETIC RESIN HAVING A MULTIPLICITY OF FERROMAGNETIC PARTICLES DISTRIBUTED THEREIN, A CONDUCTIVE COIL IMBEDDED IN AND SURROUNDED BY SAID MASS, SAID COIL HAVING AT LEAST TWO TERMINAL LEADS EXTENDING WHOLLY WITHIN SAID MASS, AT LEAST TWO TERMINALS RESPECTIVELY CONNECTED WITH SAID LEADS AND PROJECTING FROM SAID BODY WHILE BEING FIRMLY MOUNTED THEREON, SAID MASS PERMEATING THE INTERIOR OF SAID COIL AND FORMING A CORE THEREIN INTEGRAL WITH THE PORTION OF SAID MASS SURROUNDING SAID COIL, AND A TUBE OF MAGENTICALLY PERMEABLE SHEET MATERIAL SURROUNDING SAID CORE AND SEPARATING IT FROM SAID COIL, SAID TUBE BEING PROVIDED WITH PERFORATIONS PERMEATED BY SAID MASS.