Patents by Inventor Barry Chang

Barry Chang 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: 6865974
    Abstract: A sawdust-removing device for a band saw machine with a power outlet device is fitted around the shaft of a motor of a band saw machine. The motor can also supply the sawdust-removing device with power at the same time to carry out clearing off sawdust. The sawdust-removing device includes a housing, a rotor and a plurality of blades. The housing has an air chamber for the rotor with the blades to be eccentrically positioned therein. The rotor is rotated by the shaft of the motor to suck in and exhaust out air for blowing off sawdust on planks being sawed. The device is easy to be integrally assembled, takes little space inside the band saw machine and is able to reduce cost in equipment and maintenance.
    Type: Grant
    Filed: December 17, 2002
    Date of Patent: March 15, 2005
    Assignee: WMH Tool Group Hong Kong Limited
    Inventor: Barry Chang
  • Publication number: 20040112193
    Abstract: A sawdust-removing device for a band saw machine with a power outlet device is fitted around the shaft of a motor of a band saw machine. The motor can also supply the sawdust removing device with power at the same time to carry out clearing off sawdust. The sawdust-removing device includes a housing, a rotor and a plurality of blades. The housing has an air chamber for the rotor with the glades to be eccentrically positioned therein. The rotor is rotated by the shaft of the motor to suck in and exhaust out air for blowing off sawdust on planks being sawed. The device is easy to be integrally assembled, needless to take much space inside the band saw machine and able to reduce cost in equipment and maintenance.
    Type: Application
    Filed: December 17, 2002
    Publication date: June 17, 2004
    Applicant: WMH TOOL GROUP HONG KONG LIMITED
    Inventor: Barry Chang
  • Patent number: D327279
    Type: Grant
    Filed: January 9, 1990
    Date of Patent: June 23, 1992
    Assignee: Delta International Machinery Corp.
    Inventors: Louis C. Brickner, Barry Chang