公开(公告)号：US3742272A

公开(公告)日：1973-06-26

申请号：US3742272D

申请日：1971-09-10

Applicant: GEN ELECTRIC

Inventor： SHATTUCK D ,  HARNDEN J

IPC: H01R39/20 ,  H01R39/40 ,  H01R39/46 ,  H02K13/10 ,  H02K13/14

CPC classification number: H01R39/40 ,  H01R39/20 ,  H01R39/46 ,  H02K13/10

Abstract: The inclusion of a body of polycrystalline metal oxide varistor material in a brush or brush holder for the suppression of sparking between sliding contacts is disclosed. The body of metal oxide varistor material may form part of a brush contact at a leading or trailing edge thereof or may be the material comprising all, or part of a brush holder in slidable contact with the brush contact and a second contact. Accordingly, the initial electrical connection and, or the final electrical connection, between the brush contact and the other slidable contact is through the varistor material thereby reducing sparking as the sliding contacts make and break connection.