Patents by Inventor Sheng-Chueh Ma

Sheng-Chueh Ma 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: 8161778
    Abstract: A card lock and key lock assembly includes a housing, a lock latch movably disposed in the housing, a swivel member pivoted to the housing and having a block portion stoppable against the lock latch, a card key lock disposed in the housing and having a lifting plate, a rotating shaft, and a hook plate connected with the lifting plate and engagable with the rotating shaft for driving the rotating shaft to rotate when the lifting plate is moved downwards, such that the rotating shaft is stoppable against the swivel member for driving the block portion of the swivel member to move away from the lock latch, and a pin tumbler lock disposed in the housing and having a plug with an arm portion for driving the block portion of the swivel member to move away from the lock latch when the plug is rotated to an unlocked position.
    Type: Grant
    Filed: July 6, 2011
    Date of Patent: April 24, 2012
    Inventor: Sheng-Chueh Ma