Patents by Inventor David Melvin Nester

David Melvin Nester 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).

  • Conveying systems for compacted, friable solids
    Patent number: 6368028
    Abstract: A gas conveying system capable of conveying a solids material without pushing or compressing the solids material. The system comprising: at least one conduit assembly comprising a conduit, a lance assembly disposed about a first end of the conduit which is capable of removing the solids material from a holding device, and a first eductor which is capable of entraining the solids material in a gas stream and moving the solids material through the conduit; a cyclone disposed about a second end of the conduit, the cyclone being capable of separating the solids material from the gas stream; and a second eductor disposed to receive the solids material from the cyclone, the second eductor being capable of entraining the solids material in a second gas stream which has a solid-material-to-gas mass ratio which is greater than that of the first eductor. The second stage eductor transports the particles further downstream for storage, additional transport or for further treatment, such as burning in an incinerator.
    Type: Grant
    Filed: January 29, 2000
    Date of Patent: April 9, 2002
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventor: David Melvin Nester
  • Solids conveying system for compacted, friable solids that can not be pushed or compressed
    Patent number: 6036407
    Abstract: A gas conveying system capable of conveying a solid material without pushing or compressing the solid material. The system comprising: at least one conduit assembly comprising a conduit, a lance assembly disposed about a first end of the conduit which is capable of removing the solid material from a holding device, and a first eductor which is capable of entraining the solid material in a gas stream and moving the solid material through the conduit; a cyclone disposed about a second end of the conduit, the cyclone being capable of separating the solid material from the gas stream; and a second eductor disposed to receive the solid material from the cyclone, the second eductor being capable of entraining the solid material in a second gas stream which has a solid-material-to gas mass ratio which is greater than that of the first eductor. The second stage eductor transports the particles further downstream for storage, additional transport, or for further treatment, such as burning in an incinerator.
    Type: Grant
    Filed: September 3, 1997
    Date of Patent: March 14, 2000
    Assignee: Exxon Chemical Patents Inc.
    Inventor: David Melvin Nester