Porous-refractory encapsulant for cous and coil encapsulated therewith

• US 3,308,414 A
• Filed: 01/14/1964
• Issued: 03/07/1967
• Est. Priority Date: 01/14/1964
• Status: Expired due to Term

• Current Assignee: Anamag Inc.
• Original Assignee: George W. Ostrander, Wesley W. Pendleton
• Inventors: Ostrander, George W., Pendleton, Wesley W.
• Application Number:
  US04/337,552
• Time in Patent Office: 1,148 Days
• US Class Current: 336/205
• CPC Class Codes: H01B 3/085 Particles bound with glass
• CPC Class Codes: H01F 5/06 Insulation of windings
• CPC Class Codes: Y10T 29/49071 by winding or coiling
• CPC Class Codes: Y10T 29/49162 by using wire as conductive path

Claims

1. AN ELECTRICAL APPARATUS COMPRISING. (A) A PLURALITY OF TURNS OF WIRE COATED WITH INORGANIC, HIGH-TEMPERATURE INSULATION, AND (B) A POROUS REFRACTORY ENCAPSULANT SURROUNDING SAID TURNS, COMPRISING, BY WEIGHT, (A) 80-93 PARTS AL2O3, (B) 2-3,5 PARTS CR2O3, (C) 0-6 PARTS ZNO, AND (D) 3-10 PARTS SODIUM SILICATE.