Patents by Inventor Chong Ying Lu

Chong Ying Lu 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: 7301287
    Abstract: A high power light string device comprises a plug with a plug blade set, a tail receptacle, and at least an LED string, wherein a first power adaptor disposed in the plug converts an AC voltage through the plug blade set to a high DC voltage, and a second power adaptor disposed in the tail receptacle converts the AC voltage through the plug blade set to a low DC voltage. Two ends of the LED string are respectively connected to the first and second power adaptors to receive the high and lower DC voltages so that the LED string is turned on to emit light. The power adaptors are directly disposed respectively in the plug and the tail receptacle to simplify the whole light string device so as to enhance the decorating effect of the light string device.
    Type: Grant
    Filed: January 18, 2007
    Date of Patent: November 27, 2007
    Assignee: Wang Loong Co., Ltd.
    Inventor: Chong Ying Lu
  • Patent number: 7021968
    Abstract: An end socket applicable to Christmas decoration low-voltage bulbs comprises a shell body, a first and a second conductive sheet, a diode, and an electric cable. The shell body has an receiving room with the first and second conductive sheets therein. The first and second conductive sheets are connected to a first conducting pin and a second conducting pin of a plug, respectively. One end of the diode is connected to the first conductive sheet. The electric cable is composed of a power line, a ground line, and a low-voltage power line. The power line is connected to the first conductive sheet. The ground line is connected to the second conductive sheet. The low-voltage power line is connected to the other end of the diode. Because the low-voltage power line provides a lower voltage to light up Christmas decoration low-voltage bulbs, the effect of energy saving can be accomplished.
    Type: Grant
    Filed: July 15, 2005
    Date of Patent: April 4, 2006
    Assignee: Wang Loong Co., Ltd.
    Inventor: Chong Ying Lu
  • Patent number: 6814621
    Abstract: An improved current tap structure comprises an outer body with an inner body disposed therein. Two parallel grooves are provided in the inner body to receive and position two U-shaped contacts and two lead wires connected therewith. Two blades are provided at two sides of the grooves. The blades and the lead wires are exposed from a plug face and the bottom face of the outer body, respectively. Notches are provided between barriers at two sides of the grooves and an outlet plate of the inner body so that the U-shaped contacts and the lead wires connected therewith can slide into the grooves from the notches. Thereby, the effect of simplifying the assembly steps can be achieved, and the advantages of quick processing speed, low assembly cost and low price can also be accomplished.
    Type: Grant
    Filed: February 25, 2003
    Date of Patent: November 9, 2004
    Inventor: Chong Ying Lu
  • Publication number: 20040166738
    Abstract: An improved current tap structure comprises an outer body with an inner body disposed therein. Two parallel grooves are provided in the inner body to receive and position two U-shaped contacts and two lead wires connected therewith. Two blades are provided at two sides of the grooves. The blades and the lead wires are exposed from a plug face and the bottom face of the outer body, respectively. Notches are provided between barriers at two sides of the grooves and an outlet plate of the inner body so that the U-shaped contacts and the lead wires connected therewith can slide into the grooves from the notches. Thereby, the effect of simplifying the assembly steps can be achieved, and the advantages of quick processing speed, low assembly cost and low price can also be accomplished.
    Type: Application
    Filed: February 25, 2003
    Publication date: August 26, 2004
    Inventor: Chong Ying Lu
  • Patent number: 6079997
    Abstract: A lamp socket includes a double open end, conical socket shell, a socket cap covered on one open end of the conical socket shell and having a plurality of through holes, a metal contact ring fastened to two mounting tabs inside the conical socket shell for receiving the ring contact of a bulb, and a metal contact plate fastened to a transverse frame within the bottom open end of the conical socket shell for the contact of the tip contact of the bulb being threaded into the metal socket ring, the conical socket shell and the metal contact ring defining a water passage therebetween in communication with the through holes on the socket cap for guiding rain water out of the lamp socket.
    Type: Grant
    Filed: August 17, 1998
    Date of Patent: June 27, 2000
    Inventor: Chong-Ying Lu
  • Patent number: 5984730
    Abstract: The present invention relates to a waterproof electric plug with fuses that comprises a housing, a fuse holder, a fuse cover, two plug blades, two tubular fuses, and power lines. When the cover and the holder are inserted into the housing, the complicated structure that is formed will prevent any water or liquid from entering into the housing and the holder. The cover can be pushed to expose an opening in the housing through which the tubular fuses can be replaced.
    Type: Grant
    Filed: May 20, 1997
    Date of Patent: November 16, 1999
    Inventor: Chong-Ying Lu
  • Patent number: 5707255
    Abstract: An electric receptacle including an insulative receptacle base mounted within an insulative housing to hold a hot wire and a neutral wire, wherein the insulative receptacle defines two longitudinal wire chambers diagonally disposed at two opposite sides of a horizontal base wall thereof for receiving the hot wire and the neutral wire respectively, and two longitudinal terminal chambers respectively separated from the longitudinal wire chambers at one side for receiving the terminals of the hot wire and neutral wire respectively.
    Type: Grant
    Filed: January 17, 1997
    Date of Patent: January 13, 1998
    Inventor: Chong Ying Lu