LIFTING MAGNET FOR SHEET-FORMED OBJECTS OF MAGNETISABLE MATERIAL

• US 3,555,474 A
• Filed: 04/29/1969
• Issued: 01/12/1971
• Est. Priority Date: 05/14/1968
• Status: Expired due to Term

• Current Assignee: Marcher Jorgen
• Original Assignee: Marcher Jorgen
• Inventors: MARCHER JORGEN
• Application Number:
  US04/820,172
• Time in Patent Office: 623 Days
• US Class Current: 335/289
• CPC Class Codes: H01F 7/206 Electromagnets for lifting, handling or transporting of magnetic pieces or material electromagnets for guidance of vehicles, workpieces B65G21/2009; for magnetic suspension or levitation H02N15/00

Abstract

LIFTING MAGNETS HAVING AN INTERMEDIATE POLE OF MAGNETIZABLE MATERIAL WHICH IS INSERTED BETWEEN TWO COAXIAL MAGNETIC COILS. EACH OF THE COILS HAS SUBSTANTIALLY THE IDENTICAL NUMBER OF AMPERE TURNS. THE LIFTING MAGNET HAS A RELATIVELY HIGH CARRYING CAPACITY WHEN THE TWO COILS ARE FED WITH CURRENT WHICH PERMITS THE MAGNET TO LIFT A SINGLE THIN SHEET FROM A STACK OF SHEETS OF MAGNETIZABLE MATERIAL.

Claims