Patents by Inventor Charles D. Foran, Sr.

Charles D. Foran, Sr. 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).

  • Double helical flowmeter
    Patent number: 5415041
    Abstract: A high volume, low RPM, low noise, low wear and long life flowmeter uses inter-engaging double helical four-lobe rotors. The meter is made with ball bearings or bearingless. The double helical nature of the teeth provides no axial loads and no side loads or end loads, and uses true gear designs with very large pockets. A high contact ratio is provided with only four teeth, reducing and eliminating noise and pulsing output, increasing working volume and decreasing speed and wear.
    Type: Grant
    Filed: January 24, 1994
    Date of Patent: May 16, 1995
    Assignee: Flowdata, Inc.
    Inventors: Charles D. Foran, Jr., Charles D. Foran, Sr.