Patents by Inventor Ven-Chung Chu

Ven-Chung Chu 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: 5199945
    Abstract: It is an enema device, in which an electro-motive pump is used for adapting to different water containers, and a power supply unit in the device may be a rectifier or a car power supply; a rubber tube is connected with a rectal pipe or a washing nozzle, which is to be mounted on a stool bag before performing an enema operation.
    Type: Grant
    Filed: July 23, 1990
    Date of Patent: April 6, 1993
    Inventor: Ven-Chung Chu
  • Patent number: 4962922
    Abstract: Apparatus for use with a Christmas tree cascades artificial snow particles through the tree branches. The apparatus includes a substantially conical collecting receptacle having an interior surface formed with means for better directing snow particles by force of gravity alone into a sump portion. The invention further includes a small air intake hole formed in the particle inlet for facilitating communication with the sump portion of the receptacle and the particle outlet. The deflector atop the tree is provided with a fan for facilitating the dispersion of particles discharged by particle outlet conduit.
    Type: Grant
    Filed: November 22, 1989
    Date of Patent: October 16, 1990
    Inventor: Ven-Chung Chu
  • Patent number: 4890008
    Abstract: This invention relates to a type of multi-function automatic revolving Christmas tree base. Its rotation directions can be changed automatically by means of a DC motor transmission to drive the revolving cylinder of the Christmas tree, which drives a two-way exchanging mechanism to change the polarities of the input current from the DC motor, so that the DC motor can rotate in positive and reverse directions. On the outer walls of the revolving cylinder are two conductive copper collars in connection with outer power source. Part of the two conductive copper collars is extending upwards through the wall of the revolving cylinder and in connection with another socket, which can serve as the power source of the lamps on the Christmas tree. Therefore, when Christmas tree is turning in one direction, there is no worry of the winding and knotting of the power cords.
    Type: Grant
    Filed: October 22, 1986
    Date of Patent: December 26, 1989
    Inventor: Ven-Chung Chu