Patents by Inventor Rodney L. Rolffs

Rodney L. Rolffs 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).

  • Fuel supply component purging system
    Publication number: 20080034733
    Abstract: A method of purging fuel supply components for a combustion chamber of a regeneration assembly is disclosed. A regeneration cycle is performed during which fuel is supplied from a fuel source to the combustion chamber with fuel supply components including a fuel supply circuit and at least one fuel injector unit. At least a first purging cycle is initiated to purge residual fuel from the fuel supply components. During the purging cycle, a flow of purging gas is directed to the at least one fuel injector unit to purge residual fuel from the at least one fuel injector unit. Also during the purging cycle, a flow of purging gas is directed to the fuel supply circuit to purge at least a portion of the fuel in the fuel supply circuit toward the fuel source.
    Type: Application
    Filed: August 14, 2006
    Publication date: February 14, 2008
    Inventors: Robert L. Miller, Glenn B. Cox, Ronald D. Shinogle, Alan R. Stockner, Xiaohui Gong, Rodney L. Rolffs
  • Latching electromagnet
    Patent number: 5781090
    Abstract: A latching electromagnet is provided. The electromagnet (300) includes a core (305) having a pole face, a coil of windings (325), and an armature (330). Advantageously, the core has a geometry that locally increases the magnetic flux density to saturation levels.
    Type: Grant
    Filed: March 26, 1997
    Date of Patent: July 14, 1998
    Assignee: Caterpillar Inc.
    Inventors: C. Nickolas Goloff, Rodney L. Rolffs