Patents by Inventor Hsu Chun-Pu

Hsu Chun-Pu 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).

  • Automatic door being controlled with a servo-controlled safety protection device
    Patent number: 4736144
    Abstract: An automatic door, driven with a motor and a speed sensor, is controlled with a servo device. Upon the door being opened or closed and being stopped by an obstacle or being out of order, the motor to drive the door will be stopped; in case of the door being retarded by a wind force or other factors, the driving power of the motor will automatically be adjusted to such an extent that the door can still be closed together so as to fully use the driving power of the motor.
    Type: Grant
    Filed: December 2, 1986
    Date of Patent: April 5, 1988
    Inventor: Hsu Chun-Pu