Patents by Inventor Evans Weng

Evans Weng 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: 20020134673
    Abstract: The present invention relates to a anodizing barrel with pump attached and, more particularly to such a barrel that can be adjusted to change the desired volume subject to the processing flow when having small aluminum parts to receive an anodization treatment, enabling the anodization treatment to be performed in the same electroplating drum. When receiving pre-treatment or post-treatment, regular aluminum parts require a relatively larger space, at this time the full space of the drum is used. However, during anodization, the parts must be closely attached together. At this time, the volume of the inside space of the drum can be compressed to squeeze the aluminum workpieces against one another. Further, the motive of the drum is used to drive the pump head connected thereto, keeping electroplating solution to be well circulated through the drum.
    Type: Application
    Filed: March 20, 2001
    Publication date: September 26, 2002
    Inventor: Evans Weng
  • Patent number: 5391277
    Abstract: An electro-plating barrel, which includes a speed increaser driven by the barrel to turn a impeller vane pump causing it to constantly pump plating solution through the barrel so as to equalize the concentration of the plating solution internally as well as externally.
    Type: Grant
    Filed: April 22, 1994
    Date of Patent: February 21, 1995
    Inventor: Evans Weng
  • Patent number: 5025827
    Abstract: A fluid level controller flexibly set up according to the number of level steps to be controlled and the pitch between such level steps, which comprises a plurality of joint pipes connected in series to form a pipe assembly; a ring-shaped magnetic floating member sleeved on such a pipe assembly to follow fluid level to move up and down; a plurality of reed elements having each a reed switch connected in series with one another and received in the joint pipes; a main control circuit comprising latching relays in quantity one less than the quantity of the reed elements and a plurality of controlled actuators respectively connected to the reed elements.
    Type: Grant
    Filed: April 12, 1990
    Date of Patent: June 25, 1991
    Inventor: Evans Weng
  • Patent number: 4946573
    Abstract: A pump attach dipole electro-plating barrel, which includes a flexible impeller vane pump driven by the barrel to constantly pump outside plating solution into the barrel so as to equalize the concentration of the plating solution internally as well as externally. Several electrodes are positioned in the barrel to alternatively connect with the anode and cathode through an electric polarity changing device, so that the metal films which is deposited onto the electrodes during the rotation of temporary cathode can be automatically electrolyzed from the electrodes through the change of electric polarity connection to minimize the consumption of anode metal and metal ion in bath.
    Type: Grant
    Filed: January 12, 1990
    Date of Patent: August 7, 1990
    Inventor: Evans Weng