Patent application number | Description | Published |
20100126967 | SWITCHGEAR AND SWITCHGEAR OPERATING MECHANISM - The time period is shortened till a cutoff spring force is released when a switchgear is cut off. This switchgear comprises: a closing shaft; a main lever fixed turnably on the closing shaft and associated with a movable contact; a closing spring; a sub shaft; a sub lever and a latch lever fixed on the sub shaft; a roller mounted on the leading end of the latch lever; a turnable latch and a kick lever; a lock lever made turnable with respect to the latch; a latch returning spring for biasing the latch; a lock returning spring for biasing the kick lever and the lock lever; and a stopper for restricting the turns of the lock lever and the latch. | 05-27-2010 |
20110000768 | SWITCHGEAR AND SWITCHGEAR OPERATING MECHANISM - An embodiment of a switchgear has: a closing shaft; a main lever fixed to the closing shaft and associated with a movable contact; a cutoff spring; a sub-shaft; a sub-lever and a latch lever which are connected to the sub-shaft; a roller pin mounted to the leading end of the latch lever; a latch; a latch returning spring for urging the latch; a latch pin fixed to the latch; and a ring mounted to the latch pin so as to be movable in the radial direction of the latch pin. In the closed state, the roller pin presses the leading end of the latch. In power cutoff operation, latch is pulled so as to permit rotation of the latch, engagement between the roller pin and the leading end of the latch is disengaged, and the sub-shaft is rotated by urging by the cutoff spring. | 01-06-2011 |
20110073446 | SWITCHGEAR AND SWITCHGEAR OPERATING MECHANISM - According to an embodiment, a switchgear operating mechanism has a roller pin rotatably fixed to a leading end of a latch lever. A latch is fixed to a solenoid lever at a position different from the rotation axis of the solenoid lever, and has a leading end engageable with the roller pin. In a state where the switchgear operating state is shifted from the closed state to the cutoff state, the solenoid lever is pushed by an electromagnetic solenoid for cutoff so as to be rotated in an opposite direction to the biasing direction of the solenoid lever return spring, and the latch lever is rotated by a biasing force of the roller pin to release an engagement between the roller pin and the leading end of the latch, which causes a cutoff spring to discharge its energy to rotate the latch lever. | 03-31-2011 |
20120242018 | BUFFERING DEVICE FOR THE OPERATING MECHANISM OF A SWITCHGEAR, AND METHOD OF LUBRICATION THEREOF - A piston rod ( | 09-27-2012 |
20130307647 | SWITCHGEAR AND SWITCHGEAR OPERATING MECHANISM - According to an embodiment, when a switchgear operating state is shifted from a close state to a cutoff state, a solenoid lever is pushed and rotated by a plunger of an electromagnetic solenoid for cutoff so that the solenoid lever rotates in a direction opposite from the direction of the urging of a solenoid-lever return spring. A trigger roller pin and the solenoid lever become disengaged from each other, an eccentric pin and a trigger lever are rotated by the urging force from a latch leading end become disengaged from each other, whereby a latch lever is rotated by the released energy of a cutoff spring. | 11-21-2013 |
20140054148 | SWITCHGEAR AND OPERATION MECHANISM FOR THE SAME - The circuit opening operation section of an embodiment of switchgear operation mechanism comprises: a circuit opening electromagnetic solenoid having a fitting structure that is provided with a step; and a solenoid spacer for adjusting the distance between a circuit opening trigger mechanism and the circuit opening electromagnetic solenoid. The circuit opening solenoid has: a solenoid housing fixed in position by way of the solenoid spacer; a plunger; and a stopper fitted to the solenoid housing so as to limit the sliding motion of the plunger in the plunger returning direction when the coil is not supplied with electric power. The limiting position of the stopper is adjustable. | 02-27-2014 |
20140353086 | BUFFERING DEVICE FOR THE OPERATING MECHANISM OF A SWITCHGEAR, AND METHOD OF LUBRICATION THEREOF - A piston rod ( | 12-04-2014 |
20140353888 | BUFFERING DEVICE FOR THE OPERATING MECHANISM OF A SWITCHGEAR, AND METHOD OF LUBRICATION THEREOF - A piston rod ( | 12-04-2014 |
20140353889 | BUFFERING DEVICE FOR THE OPERATING MECHANISM OF A SWITCHGEAR, AND METHOD OF LUBRICATION THEREOF - A piston rod ( | 12-04-2014 |
20140353890 | BUFFERING DEVICE FOR THE OPERATING MECHANISM OF A SWITCHGEAR, AND METHOD OF LUBRICATION THEREOF - A piston rod ( | 12-04-2014 |