公开(公告)号：US3500081A

公开(公告)日：1970-03-10

申请号：US3500081D

申请日：1968-11-26

Applicant: IBM

Inventor： DREJZA JOHN E ,  KOZOL EUGENE T ,  PELKIE ROBERT E ,  WALLACE JOSEPH E

IPC: H02K37/20 ,  H02K37/00

CPC classification number: H02K37/20

公开(公告)号：US3585927A

公开(公告)日：1971-06-22

申请号：US3585927D

申请日：1969-12-22

Applicant: IBM

Inventor： BURNS ROBERT C ,  DREJZA JOHN E ,  MANNING DONALD F ,  STARK RICHARD L ,  STILES DONALD J ,  WALLACE JOSEPH E ,  WILSON JOSEPH T

IPC: B41J9/38 ,  B41J7/84 ,  H01F7/14

CPC classification number: B41J9/38

Abstract: In a high performance print magnet, magnet yokes are independently resiliently mounted on a common support, the yoke is tapered at the pole face to concentrate the flux attracting the armature, and the push rod used to actuate a pivoted print hammer is spring biased to hold the magnet armature against a back stop and prevent the push rod from following the print hammer after the magnet armature seals.

公开(公告)号：US2850382A

公开(公告)日：1958-09-02

申请号：US47809154

申请日：1954-12-28

Applicant: IBM

Inventor： KELLY MARTIN J ,  WALLACE JOSEPH E

IPC: C22C7/00 ,  H01H29/00 ,  H01H29/06 ,  H01H50/54 ,  H01R13/70

CPC classification number: H01R13/70 ,  C22C7/00 ,  H01H29/00 ,  H01H29/06 ,  H01H50/54

公开(公告)号：US3165608A

公开(公告)日：1965-01-12

申请号：US24660462

申请日：1962-12-21

Applicant: IBM

Inventor： WALLACE JOSEPH E

IPC: H01H51/06 ,  H01H51/28

CPC classification number: H01H51/287