Patents by Inventor Donald N. Riggs

Donald N. Riggs 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).

  • Publication number: 20170326934
    Abstract: The present invention is a networkable, peripherally valved hydraulic shock absorber and damper apparatus which is a substantial improvement and major advance over the shock absorber and damping systems conventionally known to date. The apparatus employs an elevated viscosity hydraulic fluid as a damping medium; and presents a unique structural arrangement that utilizes peripheral valving to shunt a high viscosity hydraulic fluid between the peripheral edges of the piston mechanism and the cylinder wall.
    Type: Application
    Filed: May 11, 2016
    Publication date: November 16, 2017
    Inventors: Robert H. Wehr, Donald N. Riggs
  • Patent number: 9371883
    Abstract: The present invention is a networkable, peripherally valved hydraulic shock absorber and damper apparatus which is a substantial improvement and major advance over the shock absorber and damping systems conventionally known to date. The apparatus employs an elevated viscosity hydraulic fluid as a damping medium; and presents a unique structural arrangement that utilizes peripheral valving to shunt a high viscosity hydraulic fluid between the peripheral edges of the piston mechanism and the cylinder wall.
    Type: Grant
    Filed: July 26, 2012
    Date of Patent: June 21, 2016
    Inventors: Robert H. Wehr, Donald N. Riggs
  • Patent number: 8974848
    Abstract: Tooth stain resulting from exposure to coloring agents contained in food and beverages, generally termed foodstuffs, is reduced, prevented and/or reversed by the addition of consumable anti-staining materials to the foodstuff anytime prior to ingestion. The anti-staining materials may be introduced into the foodstuff during the manufacturing process or added by the consumer at the time of preparation or use. A number of materials which interact with tooth stains and/or staining agents to counteract their effect and/or reduce their coloration as well as substances which interact with teeth to block the interaction of staining agents with teeth are disclosed.
    Type: Grant
    Filed: February 26, 2009
    Date of Patent: March 10, 2015
    Inventors: Barry W. Carothers, Donald N. Riggs
  • Publication number: 20140151169
    Abstract: The present invention is a networkable, peripherally valved hydraulic shock absorber and damper apparatus which is a substantial improvement and major advance over the shock absorber and damping systems conventionally known to date. The apparatus employs an elevated viscosity hydraulic fluid as a damping medium; and presents a unique structural arrangement that utilizes peripheral valving to shunt a high viscosity hydraulic fluid between the peripheral edges of the piston mechanism and the cylinder wall.
    Type: Application
    Filed: July 26, 2012
    Publication date: June 5, 2014
    Inventors: Robert H. Wehr, Donald N. Riggs