Patents by Inventor Jin-Sub Shin

Jin-Sub Shin 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).

  • Mortise lock having double locking function
    Patent number: 7155946
    Abstract: A mortise lock having a double locking function is provided, which includes: a deadbolt for performing a locking function of a door by going in and out the door; a latchbolt going in and out the door by a handle installed on the door; and a locking member for maintaining the latchbolt in a locked state by keeping the latchbolt projected when the deadbolt is projected, whereby it is possible to improve the security, and reducing breakage and malfunction of the deadbolt due to forced operations of the door, since the door employing the mortise lock cannot be forcedly opened without breaking the latchbolt as well as the deadbolt.
    Type: Grant
    Filed: October 14, 2005
    Date of Patent: January 2, 2007
    Assignee: Seoul Commtech Co. Ltd.
    Inventors: Sang-Han Lee, Jin-Sub Shin
  • MORTISE LOCK HAVING DOUBLE LOCKING FUNCTION
    Publication number: 20060266088
    Abstract: A mortise lock having a double locking function is provided, which includes: a deadbolt for performing a locking function of a door by going in and out the door; a latchbolt going in and out the door by a handle installed on the door; and a locking member for maintaining the latchbolt in a locked state by keeping the latchbolt projected when the deadbolt is projected, whereby it is possible to improve the security, and reducing breakage and malfunction of the deadbolt due to forced operations of the door, since the door employing the mortise lock cannot be forcedly opened without breaking the latchbolt as well as the deadbolt.
    Type: Application
    Filed: October 14, 2005
    Publication date: November 30, 2006
    Inventors: Sang-Han Lee, Jin-Sub Shin