Patents by Inventor Young Hwan Eum

Young Hwan Eum has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 8354905
    Abstract: A noise decreasing type electromagnetic switch includes a buffer disposed between an end of a stationary core and an end of a movable core facing the end of the stationary core so as to allow the movable core 150 to be elastically supported with respect to the stationary core. Accordingly, when the movable core contacts the stationary core, the buffer can be pressed and transformed to decrease impact and noise. Also, when the final operation is completed, the stationary core and the movable core are closely adhered, a performance of an actuator can be maintained.
    Type: Grant
    Filed: October 12, 2011
    Date of Patent: January 15, 2013
    Assignee: LSIS Co., Ltd.
    Inventor: Young Hwan Eum
  • Patent number: 8330565
    Abstract: A noise decreasing type electromagnetic switch includes a buffer disposed between a stationary core and a contact spring to electrically support a shaft and the stationary core. The buffer includes a buffering space therein. Accordingly, impact caused at the stationary core and the shaft can be effectively absorbed even by the buffering space as well as an elastic force of the buffer. The buffer is inserted in the stationary core for coupling so as to be prevented from being separated during operations, resulting in maintaining long-term durability. Also, the buffer may support the stationary core and a metal plate, whereby an assembly process can be simplified.
    Type: Grant
    Filed: October 12, 2011
    Date of Patent: December 11, 2012
    Assignee: LSIS Co., Ltd.
    Inventor: Young Hwan Eum
  • Patent number: 8274347
    Abstract: Disclosed is an electromagnetic switch, in which an arc protection member is installed in an extinguishing chamber for housing stationary electrodes and a movable contact arm, thereby protecting internal components including an upper yoke from damages caused due to arc, which is generated immediately when the movable contact arm is separated from the stationary electrodes, resulting in improvement of operation reliability as well as increase in a lifespan of the electromagnetic switch.
    Type: Grant
    Filed: January 21, 2011
    Date of Patent: September 25, 2012
    Assignee: LS Industrial Systems Co., Ltd
    Inventor: Young Hwan Eum
  • Patent number: 8242866
    Abstract: A sealed cased magnetic switch includes: a first contact pressure spring having one end supported by the movable contactor and applying an elastic force to the movable contactor to provide a contact pressure in a direction in which the movable contactor is brought into contact with the fixed electrode; a spring seat member supporting the other end of the first contact pressure spring and fixedly installed on the driving shaft; and a second contact pressure spring having a diameter larger than that of the first contact pressure spring and applying an elastic force at an outer position in a radial direction compared with the first contact pressure spring to the movable contactor in a direction in which the movable contactor is brought into contact with the fixed electrode.
    Type: Grant
    Filed: July 2, 2010
    Date of Patent: August 14, 2012
    Assignee: LS Industrial Systems Co., Ltd.
    Inventor: Young Hwan Eum
  • Publication number: 20120092102
    Abstract: A noise decreasing type electromagnetic switch includes a buffer disposed between a stationary core and a contact spring to electrically support a shaft and the stationary core. The buffer includes a buffering space therein. Accordingly, impact caused at the stationary core and the shaft can be effectively absorbed even by the buffering space as well as an elastic force of the buffer. The buffer is inserted in the stationary core for coupling so as to be prevented from being separated during operations, resulting in maintaining long-term durability. Also, the buffer may support the stationary core and a metal plate, whereby an assembly process can be simplified.
    Type: Application
    Filed: October 12, 2011
    Publication date: April 19, 2012
    Inventor: Young Hwan EUM
  • Publication number: 20120092101
    Abstract: A noise decreasing type electromagnetic switch includes a buffer disposed between an end of a stationary core and an end of a movable core facing the end of the stationary core so as to allow the movable core 150 to be elastically supported with respect to the stationary core. Accordingly, when the movable core contacts the stationary core, the buffer can be pressed and transformed to decrease impact and noise. Also, when the final operation is completed, the stationary core and the movable core are closely adhered, a performance of an actuator can be maintained.
    Type: Application
    Filed: October 12, 2011
    Publication date: April 19, 2012
    Inventor: Young Hwan EUM
  • Publication number: 20110181382
    Abstract: Disclosed is an electromagnetic switch, in which an arc protection member is installed in an extinguishing chamber for housing stationary electrodes and a movable cotact arm, thereby protecting internal components including an upper yoke from damages caused due to arc, which is generated immediately when the movable cotact arm is separated from the stationary electrodes, resulting in improvement of operation reliability as well as increase in a lifespan of the electromagnetic switch.
    Type: Application
    Filed: January 21, 2011
    Publication date: July 28, 2011
    Inventor: Young Hwan EUM
  • Publication number: 20110156845
    Abstract: A sealed cased magnetic switch includes: a first contact pressure spring having one end supported by the movable contactor and applying an elastic force to the movable contactor to provide a contact pressure in a direction in which the movable contactor is brought into contact with the fixed electrode; a spring seat member supporting the other end of the first contact pressure spring and fixedly installed on the driving shaft; and a second contact pressure spring having a diameter larger than that of the first contact pressure spring and applying an elastic force at an outer position in a radial direction compared with the first contact pressure spring to the movable contactor in a direction in which the movable contactor is brought into contact with the fixed electrode.
    Type: Application
    Filed: July 2, 2010
    Publication date: June 30, 2011
    Applicant: LS INDUSTRIAL SYSTEMS CO., LTD.
    Inventor: Young Hwan Eum