Electromagnet assembly

• US 3,111,607 A
• Filed: 02/29/1960
• Issued: 11/19/1963
• Est. Priority Date: 02/29/1960
• Status: Expired due to Term

• Current Assignee: August Storch Edward
• Original Assignee: August Storch Edward
• Inventors: AUGUST STORCH EDWARD
• Application Number:
  US04/011,623
• Time in Patent Office: 1,359 Days
• US Class Current: 361/144
• CPC Class Codes: B23Q 3/1543 using electromagnets

Claims

1. A COMBINED PERMANENT MAGNET AND ELECTROMAGNET ASSEMBLY FOR CLAMPING A THIN SHEET METAL PANEL COMPRISING A CASING OF NONMAGNETIC MATERIAL HAVING AN OPENING THEREIN, A RECTANGULAR PERMANENT MAGNET OF CERAMIC MATERIAL POSITIONED WITHIN SAID CASING, A PAIR OF RECTANGULAR POLE PIECES EACH HAVING A PLANAR FACE ADJACENT ONE END THEREOF IN CONTACT WITH A POLE OF SAID MAGNET AND POSITIONED ADJACENT SAID OPENING IN SAID CASING, A COIL WOUND AROUND THE OTHER END OF EACH SAID POLE PIECE WHICH EXTENDS BEYOND THE CONFINES OF SAID MAGNET WITHIN SAID CASING, AND MEANS FOR HOLDING SAID MAGNET AND POLE PIECES IN POSITION WITHIN SAID CASING, THE SAID ONE ENDS OF SAID POLE PIECES WHICH ARE ADJACENT SAID OPENING PROJECTING OUTWARDLY WITH RESPECT TO THE CASING SUFFICIENTLY TO PERMIT CONTACT OF THE SAID ONE ENDS OF SAID POLE PIECES WITH A WORKPIECE WHICH IS TO BE GRIPPED BY SAID MAGNET ASSEMBLY.