公开(公告)号：US3038036A

公开(公告)日：1962-06-05

申请号：US66573357

申请日：1957-06-14

Applicant: IBM

Inventor： YOUNG CARL T ,  STEPHEN BESPALKO

IPC: G11B5/024

CPC classification number: G11B5/024

公开(公告)号：US2695492A

公开(公告)日：1954-11-30

申请号：US34731353

申请日：1953-04-07

Applicant: IBM

Inventor： LARRABEE CLINTON E ,  YOUNG CARL T

IPC: G04C11/02

CPC classification number: G04R20/14

公开(公告)号：US3705370A

公开(公告)日：1972-12-05

申请号：US3705370D

申请日：1971-04-15

Applicant: IBM

Inventor： CHAI HI D ,  MILLS STEPHEN H ,  PAWLETKO JOSEPH P ,  PETERS FRANCIS E ,  YOUNG CARL T

IPC: B41J9/38 ,  H01F7/14 ,  H02K33/00 ,  H01F7/08

CPC classification number: H02K33/00 ,  B41J9/38 ,  H01F7/14

Abstract: A magnetic actuator comprises a three-legged magnetic core with an armature pivotally mounted at the middle leg to have portions on either side thereof with an abutting gap relation with one outer leg and an abutting plus a peripheral gap relation with the other. A winding on the one abutting leg provides drive flux, and a winding or permanent magnet on the other leg provides a restore or detent flux between teeth on the armature and core.