Patents by Inventor Miao Hsueh Tsai

Miao Hsueh Tsai 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).

  • Publication number: 20040256860
    Abstract: A latch assembly connected to a lock face of a sliding door includes two hooks which are connected to two activation plates respectively. Two rotation gears each have teeth engaged with the activation plates which are moved to pivot the two hooks when the two gears are rotated. A safety member is biased by a spring and includes a contact pin which movably extends through the lock face on the sliding door so that the safety member is pushed when the contact pin is pushed by a fixed door when the sliding door is in close position. The safety member further has an engaging pin which is removably engaged with the recess of the activation plate so that when the sliding door is in open position, the activation plate cannot be moved and the hooks are remained in the sliding door.
    Type: Application
    Filed: June 17, 2003
    Publication date: December 23, 2004
    Inventor: Miao Hsueh Tsai
  • Publication number: 20040245784
    Abstract: A latch assembly connected to a lock face of a sliding door includes two hooks which are connected to two activation plates respectively. Two rotation gears each have teeth engaged with the activation plates which are moved to pivot the two hooks when the two gears are rotated. A safety member is biased by a spring and includes a contact pin which movably extends through the lock face on the sliding door so that the safety member is pushed when the contact pin is pushed by a fixed door when the sliding door is in close position. The safety member further has an engaging pin which is removably engaged with the recess of the activation plate so that when the sliding door is in open position, the activation plate cannot be moved and the hooks are remained in the sliding door.
    Type: Application
    Filed: June 9, 2003
    Publication date: December 9, 2004
    Inventor: Miao-Hsueh Tsai
  • Patent number: 6641186
    Abstract: A door lock assembly includes a rose having a peripheral flange which has a recess defined therein. A handle is connected to an outer surface of said rose and a mounting plate is connected to said inner surface of said rose. A lock device is located between the rose and the mounting plate. Two retaining members extend from an inner surface of said rose and two engaging members extend from said mounting plate. The engaging members are force-fitted to said retaining members. The mounting plate has a groove defined therethrough so that the lock device is engaged with said groove and a latch is connected to said lock device and extends through said recess of said peripheral flange.
    Type: Grant
    Filed: January 28, 2002
    Date of Patent: November 4, 2003
    Inventor: Miao-Hsueh Tsai
  • Publication number: 20030141725
    Abstract: A door lock assembly includes a rose having a peripheral flange which has a recess defined therein. A handle is connected to an outer surface of said rose and a mounting plate is connected to said inner surface of said rose. A lock device is located between the rose and the mounting plate. Two retaining members extend from an inner surface of said rose and two engaging members extend from said mounting plate. The engaging members are force-fitted to said retaining members. The mounting plate has a groove defined therethrough so that the lock device is engaged with said groove and a latch is connected to said lock device and extends through said recess of said peripheral flange.
    Type: Application
    Filed: January 28, 2002
    Publication date: July 31, 2003
    Inventor: Miao-Hsueh Tsai
  • Patent number: D467785
    Type: Grant
    Filed: January 28, 2002
    Date of Patent: December 31, 2002
    Inventor: Miao-Hsueh Tsai