-
公开(公告)号:US3588657A
公开(公告)日:1971-06-28
申请号:US3588657D
申请日:1969-06-26
CPC分类号: H02P3/12 , A01B3/426 , B60S1/0803
摘要: THIS CONTROL DEVICE, FOR THE DELAY-ACTION ENERGIZATION OF AN ELECTRIC MOTOR OF THE TYPE ADAPTED TO BE BRAKED BY SHORT-CIRCUITING THE ARMATURE DRIVING A MECHANISM HAVING A PREDETERMINED FIXED-STOP POSITION, COMPRISES A FIXED-STOP DEVICE FOR SHORT-CIRCUITING SAID ARMATURE AND A THERMAL DELAY-ACTION DEVICE ASSOCIATED WITH SAID FIXED-STOP DEVICE FOR RESTARTING THE MOTOR AFTER A PREDETERMINED TIME PERIOD. IT UTILIZES A HEATING-WIRE THERMAL DELAY-ACTION DEVICE WHEREIN THE HEATING WIRE PROPER IS OPERATIVELY CONNECTED TO A CONTACT ARM MOVABLE BETWEEN A MOTOR ENERGIZING CONTACT AND AN ARMATURE SHORT-CIRCUITING CONTACT AGAINST WHICH SAID WIRE IS NORMALLY URGED IN ITS COLD CONDITION.