Patents by Inventor David R. Grymonpre

David R. Grymonpre 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).

  • Patent number: 8677904
    Abstract: A tricolor signal flare projectile configured for use with a “high-low” projectile launching system such as the U.S. Army's M-433. The projectile includes a body having a cylindrical side wall and an aft closure. The body's forward portion is open, which provides access to a hollow interior. A delay assembly is installed in the aft closure. The delay assembly includes a delay column. A signal igniter is located just forward of the delay column in the hollow interior of the body. The hollow interior also includes separate volumes of red, white, and blue illuminant. An ogive closes over the top of the hollow interior of the body, thereby encapsulating the other components. When the projectile is fired from a launcher the propellant gases burning with the launcher ignite the delay column. The delay column burns while the projectile travels along its trajectory. After the passage of a desired time interval, the delay column ignites the signal igniter.
    Type: Grant
    Filed: August 17, 2011
    Date of Patent: March 25, 2014
    Inventors: Matthew D. Rexford, David R. Grymonpre, James P. Muncie, Dale P. Krejcar, Jr., Gilbert D. Rykard, Jr.
  • Publication number: 20130042781
    Abstract: A tricolor signal flare projectile configured for use with a “high-low” projectile launching system such as the U.S. Army's M-433. The projectile includes a body having a cylindrical side wall and an aft closure. The body's forward portion is open, which provides access to a hollow interior. A delay assembly is installed in the aft closure. The delay assembly includes a delay column. A signal igniter is located just forward of the delay column in the hollow interior of the body. The hollow interior also includes separate volumes of red, white, and blue illuminant. An ogive closes over the top of the hollow interior of the body, thereby encapsulating the other components. When the projectile is fired from a launcher the propellant gases burning with the launcher ignite the delay column. The delay column burns while the projectile travels along its trajectory. After the passage of a desired time interval, the delay column ignites the signal igniter.
    Type: Application
    Filed: August 17, 2011
    Publication date: February 21, 2013
    Inventors: Matthew D. Rexford, David R. Grymonpre, James P. Muncie, Dale P. Krejcar, JR., Gilbert D. Rykard, JR.
  • Patent number: 6695953
    Abstract: Novel accelerated methods involving corona discharge, and preferably pulsed streamer high voltage corona discharge, in combination with an effective amount of suitable particles to break down organic contaminants, such as phenol and phenol red, in aqueous mediums are disclosed. More particularly, it has been discovered that the addition of an effective amount of suitable particles to the aqueous phase of a corona reactor greatly affects the properties of the corona discharge, i.e., streamer length, intensity, number of streamers and sparkover voltage, thereby significantly increasing the breakdown voltage (i.e., the maximum voltage prior to sparkover), so that the removal of organic contaminants may be accelerated, since the production of hydroxyl radicals, aqueous electrons and hydrogen peroxide increases with increases in the applied discharge voltage.
    Type: Grant
    Filed: April 6, 1995
    Date of Patent: February 24, 2004
    Assignee: Florida State University
    Inventors: Bruce R. Locke, Wright C. Finney, David R. Grymonpre