Patents by Inventor Darwin Carrell

Darwin Carrell 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 injector with spring-biased control valve
    Patent number: 5605289
    Abstract: A fuel injector assembly and a control valve for such an assembly which automatically compensate for changes in the emissions generated by the engine by changing the timing of fuel injection within the engine. The fuel injector assembly, which causes fuel to be injected during a fuel injection cycle having a start time and a stop time, includes a fuel injector nozzle, a fuel pump, and a fuel inlet associated with the fuel pump, which causes fuel to be periodically pumped from the fuel inlet through the fuel injector nozzle. A control valve, which is associated with the fuel pump and which controls the start time and the stop time of the fuel injection cycle, includes a valve body and a solenoid-actuated armature disposed in a recess in the valve body. The armature has a first side and an opposed second side and is reciprocable within the recess between a first position and a second position.
    Type: Grant
    Filed: December 2, 1994
    Date of Patent: February 25, 1997
    Assignees: Caterpillar Inc., G. W. Lisk Company, Inc.
    Inventors: Dale C. Maley, Steven B. Coleman, Darwin Carrell, Doug Kinnear