Patents by Inventor Celina Yao

Celina Yao 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: 20040090072
    Abstract: An improved bolt dock for a door lock and particularly a bolt dock capable of locking automatically when the door is closed and preventing the bolt from deforming mainly consists of an upper bolt set and a lower bolt set covered by a lid to couple with an inner handle and an outer handle to be installed on a door. The bolt dock thus made can achieve safe locking and increase the durability of the door lock.
    Type: Application
    Filed: November 12, 2002
    Publication date: May 13, 2004
    Inventor: Celina Yao
  • Patent number: 6733050
    Abstract: An improved bolt dock for a door lock and particularly a bolt dock capable of locking automatically when the door is closed and preventing the bolt from deforming mainly consists of an upper bolt set and a lower bolt set covered by a lid to couple with an inner handle and an outer handle to be installed on a door. The bolt dock thus made can achieve safe locking and increase the durability of the door lock.
    Type: Grant
    Filed: November 12, 2002
    Date of Patent: May 11, 2004
    Assignee: Shyang Feng Electric & Machinery Co., Ltd.
    Inventor: Celina Yao
  • Patent number: 6640594
    Abstract: An improved electronic lock requires a low power and consumes less electricity including an outer frame, an inner frame, a lock axle unit and a power unit. The outer frame is fastened to the outer side of a lock stile of a door. The outer frame has an outer handle, a keypad and a key way located on the exterior, and has the interior for housing the lock axle unit and the power unit to couple with the inner frame. The power unit includes a motor, a spring, a sleeve, a sliding plate and a retain plate. The power unit is coupled with a L-shaped lever to generate lever movements. Users may enter an electronic password to activate the motor to perform locking and unlocking function. The construction greatly reduces electric power: consumption of batteries, and lowers electric voltage, and increase the durability of the batteries.
    Type: Grant
    Filed: July 18, 2002
    Date of Patent: November 4, 2003
    Assignee: Shyang Feng Electric & Machinery Co., Ltd.
    Inventor: Celina Yao
  • Patent number: 6105407
    Abstract: A lock assembly includes a tube received in an outer handle and a first driving tube is rotatably received in the tube. The tube has a cruciform groove defined through the wall thereof and a driving disk is movably received in the first driving tube has two slots with two protrusions of the driving disk extends through the two slots. An inner handle has an actuating plate extending therethrough which is fixedly connected to the driving disk so that when locking the lock assembly by pushing the lock button, one of the protrusions of the driving disk is moved to be received in the transverse portion of the cruciform groove so that the handles are allowed to rotate a larger rotational angle.
    Type: Grant
    Filed: February 3, 2000
    Date of Patent: August 22, 2000
    Assignee: Shyang Feng Electric & Machinery Co., Ltd.
    Inventor: Celina Yao
  • Patent number: 6085561
    Abstract: A lock assembly includes a tube received in an outer handle and a first driving tube is rotatably received in the tube. The tube has a cruciform groove defined through the wall thereof and a driving disk is movably received in the first driving tube and has two slots with two protrusions of the driving disk extending through the two slots. An inner handle has an actuating plate extending therethrough which is fixedly connected to the driving disk so that when locking the lock assembly by pushing the lock button, one of the protrusions of the driving disk is moved to be received in the transverse portion of the cruciform groove so that the handles are allowed to rotate a larger rotational angle.
    Type: Grant
    Filed: March 16, 1999
    Date of Patent: July 11, 2000
    Assignee: Shyang Feng Electric & Machinery Co., Ltd.
    Inventor: Celina Yao
  • Patent number: 5960656
    Abstract: An electronic lock according to the present invention can be used to open the door by the electronic codes and the key such that when the electronic codes fail due to the power supply being not enough, the key can be used to open the door. The electronic lock can also be used to open the door by the key when the electronic codes fail or when the user forgets the code numbers. In addition, it is easy to replace the cells of the electronic lock. Further, the electronic lock can be fitted on the right side of the door and can also be fitted on the left side of the door.
    Type: Grant
    Filed: September 2, 1998
    Date of Patent: October 5, 1999
    Assignee: Shyang Feng Electric & Machinery Co., Ltd.
    Inventor: Celina Yao