Patents by Inventor Paul Antonius Ferdinand van Acker

Paul Antonius Ferdinand van Acker 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).

  • Method of controlling an electric motor
    Patent number: 3947742
    Abstract: A method of controlling a motor in which an elastic element is coupled in a sub-critically damped manner to the load and the natural frequency of the system which comprises the elasticity of the element and the mass of the driven part is utilized to cause the speed of the load to increase and to decrease as quickly as possible.
    Type: Grant
    Filed: September 27, 1971
    Date of Patent: March 30, 1976
    Assignee: U.S. Philips Corporation
    Inventor: Paul Antonius Ferdinand van Acker