Patents by Inventor David S. Crocker

David S. Crocker 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: 20200190288
    Abstract: Core particles produced in situ or introduced as preformed core particles are coated with a layer of carbon. Non-carbon as well as some carbon-based core materials can be utilized. The resulting carbon coated particles can find applications in rubber products, for instance as reinforcement for tire components.
    Type: Application
    Filed: November 23, 2019
    Publication date: June 18, 2020
    Inventors: David M. Matheu, Theis F. Clarke, David S. Crocker, Frederick H. Rumpf, David C. Reynolds, Dhaval A. Doshi, Martin C. Green
  • Patent number: 6543235
    Abstract: A single circuit fuel injector apparatus having a bifurcated recirculation zone is provided. The single circuit injector includes an injector tip having an aft facing tapered surface which is communicated with a plurality of fuel injector ports. A radially inward tapered conical air splitter directs sweep air over the tapered injector tip. An air blast atomizer filmer lip is disposed concentrically outward from the tapered tip. In a low power operating mode, fuel exiting the fuel injector ports is entrained within a centralized sweep air stream. In a high power operating mode, the majority of the fuel exiting the fuel injection ports has sufficient momentum to carry it across the sweep air stream so that it falls upon the main fuel filmer lip and is entrained in an outer main air stream.
    Type: Grant
    Filed: August 8, 2001
    Date of Patent: April 8, 2003
    Assignee: CFD Research Corporation
    Inventors: David S. Crocker, David L. Black
  • Publication number: 20020011064
    Abstract: A gas turbine fuel injection system of the lean direct injector type designed to reduce nitrous oxide (NOx) emissions is provided. The configuration includes a pilot fuel injector for injecting a pilot fuel stream, and a pilot swirler for providing a swirling pilot air stream to atomize and entrain the pilot fuel stream. A main airblast fuel injector is located concentrically about the pilot fuel injector, for injecting a main fuel stream concentrically about the pilot fuel stream. Inner and outer main swirlers provide a swirling main air stream to atomize and entrain the main fuel stream. An air splitter is located between the pilot swirler and the main swirler. The air splitter is so arranged and constructed as to divide the pilot air stream exiting the pilot swirler and the air splitter, from the main air stream exiting the inner main swirler, whereby a bifurcated recirculation zone is created.
    Type: Application
    Filed: July 16, 2001
    Publication date: January 31, 2002
    Inventors: David S. Crocker, Daniel A. Nickolaus, Clifford E. Smith
  • Patent number: 6272840
    Abstract: A gas turbine fuel injection system of the lean direct injector type designed to reduce nitrous oxide (NOx) emissions is provided. The configuration includes a pilot fuel injector for injecting a pilot fuel stream, and a pilot swirler for providing a swirling pilot air stream to atomize and entrain the pilot fuel stream. A main airblast fuel injector is located concentrically about the pilot fuel injector, for injecting a main fuel stream concentrically about the pilot fuel stream. Inner and outer main swirlers provide a swirling main air stream to atomize and entrain the main fuel stream. An air splitter is located between the pilot swirler and the main swirler. The air splitter is so arranged and constructed as to divide the pilot air stream exiting the pilot swirler and the air splitter, from the main air stream exiting the inner main swirler, whereby a bifurcated recirculation zone is created.
    Type: Grant
    Filed: August 29, 2000
    Date of Patent: August 14, 2001
    Assignee: CFD Research Corporation
    Inventors: David S. Crocker, Daniel A. Nickolaus, Clifford E. Smith