Patents by Inventor Chen-Chien Chen

Chen-Chien Chen 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: 6758070
    Abstract: A door lock with a clutch having a cam-styled axle sleeve comprises mainly of an outer lock part and an inner lock part mutually oppositely connected and respectively mounted on the outside and inside surfaces of a door panel, the door panel is mounted therein with a dead bolt and a spring loaded with latch bolt linked up with a rotation axle of the inner lock part, the housings of the outer and the inner lock parts are provided each with a handle to rotate their rotation axles. The rotation axle of the inner lock part has on one end thereof a second rotation axle, the rotation axle of the outer lock part has thereon the cam-styled axle sleeve. By providing a control device and a rotating ring, positioning or forward moving of the cam-styled axle sleeve to connect with the second rotation axle can be controlled, so that the door can be opened or locked by rotating the handles no matter inside or outside a house.
    Type: Grant
    Filed: June 11, 2003
    Date of Patent: July 6, 2004
    Inventors: Jer Ming Yu, Chao-Ming Cheng, Chen-Chien Chen
  • Patent number: 6725693
    Abstract: The door lock with a clutch having a cam-styled axle sleeve comprises mainly of an outer lock part and an inner lock part, both the housings of the outer and the inner lock parts are provided with a handle to rotate the internal rotation axle thereof. The rotation axle of the outer lock part is provided thereon with the cam-styled axle sleeve; the rotation axle of the inner lock part is further connected with a second rotation axle. The axle sleeve of the outer lock part is controlled for positioning and moving by a control device. When the axle sleeve is positioned, the rotation axle of the outer lock part and the second rotation axle of the inner one are separated.
    Type: Grant
    Filed: August 30, 2002
    Date of Patent: April 27, 2004
    Inventors: Jer Ming Yu, Chen-Chien Chen, Chao-Ming Cheng
  • Publication number: 20040040353
    Abstract: A door lock with a clutch having a cam-styled axle sleeve comprises mainly of an outer lock part and an inner lock part mutually oppositely connected and respectively mounted on the outside and inside surfaces of a door panel, the door panel is mounted therein with a dead bolt and a spring loaded with latch bolt linked up with a rotation axle of the inner lock part, the housings of the outer and the inner lock parts are provided each with a handle to rotate their rotation axles. The rotation axle of the inner lock part has on one end thereof a second rotation axle, the rotation axle of the outer lock part has thereon the cam-styled axle sleeve. By providing a control device and a rotating ring, positioning or forward moving of the cam-styled axle sleeve to connect with the second rotation axle can be controlled, so that the door can be opened or locked by rotating the handles no matter inside or outside a house.
    Type: Application
    Filed: June 11, 2003
    Publication date: March 4, 2004
    Inventors: Jer Ming Yu, Chao-Ming Cheng, Chen-Chien Chen
  • Publication number: 20040040352
    Abstract: The door lock with a clutch having a cam-styled axle sleeve comprises mainly of an outer lock part and an inner lock part, both the housings of the outer and the inner lock parts are provided with a handle to rotate the internal rotation axle thereof. The rotation axle of the outer lock part is provided thereon with the cam-styled axle sleeve; the rotation axle of the inner lock part is further connected with a second rotation axle. The axle sleeve of the outer lock part is controlled for positioning and moving by a control device. When the axle sleeve is positioned, the rotation axle of the outer lock part and the second rotation axle of the inner one are separated.
    Type: Application
    Filed: August 30, 2002
    Publication date: March 4, 2004
    Inventors: Jer Ming Yu, Chen-Chien Chen, Chao-Ming Cheng