Patents by Inventor Jen W. Chang

Jen W. 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).

  • Device for supporting a circular saw of sawing machine
    Patent number: 4532844
    Abstract: In a wood circular sawing machine, a support for the circular saw which includes a rotary eccentric member mounted for rotation on a horizontal shaft which is in alignment with the axis of the output shaft of the motor, and a body which has its upper portion being mounted with the arbor of the circular saw and is provided with at its lower portion a hollow cylindrical member sleeved onto the eccentric member, wherein the body that supports the arbor can change the distance of the arbor from the axis of the output shaft of the motor by rotating the eccentric member.
    Type: Grant
    Filed: April 13, 1984
    Date of Patent: August 6, 1985
    Inventors: Jen W. Chang, Hong-Tswen Chang