Patents by Inventor Neil Greer Griffin

Neil Greer Griffin 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).

  • Spring release starter for chain saw
    Patent number: 6834633
    Abstract: A starter mechanism for an internal combustion engine having a spring that is wound during the starting operation of the internal combustion engine. As the operator pulls the starter rope of the engine the starter spring begins to wind creating a force within the spring. Once the spring force overcomes the compression force of the piston the spring will unwind thereby turning the crankshaft of the engine and consequently starting the engine. The starter rope is returned to the housing of the starter mechanism by the use of a rope return spring.
    Type: Grant
    Filed: September 15, 2003
    Date of Patent: December 28, 2004
    Assignee: MTD Products Inc
    Inventors: J. Barney Sing, Neil Greer Griffin
  • Spring release starter
    Patent number: 6782863
    Abstract: A starter mechanism for an internal combustion engine having a spring that is wound during the starting operation of the internal combustion engine. As the operator pulls the starter rope of the engine the starter spring begins to wind creating a force within the spring. Once the spring force overcomes the compression force of the piston the spring will unwind thereby turning the crankshaft of the engine and consequently starting the engine. The starter rope is returned to the housing of the starter mechanism by the use of a rope return spring.
    Type: Grant
    Filed: October 8, 2002
    Date of Patent: August 31, 2004
    Assignee: MTD Products Inc.
    Inventors: Jeremy D. Leasure, Neil Greer Griffin
  • Spring release starter for chain saw
    Publication number: 20040123828
    Abstract: A starter mechanism for an internal combustion engine having a spring that is wound during the starting operation of the internal combustion engine. As the operator pulls the starter rope of the engine the starter spring begins to wind creating a force within the spring. Once the spring force overcomes the compression force of the piston the spring will unwind thereby turning the crankshaft of the engine and consequently starting the engine. The starter rope is returned to the housing of the starter mechanism by the use of a rope return spring.
    Type: Application
    Filed: September 15, 2003
    Publication date: July 1, 2004
    Applicant: MTD Products Inc,
    Inventors: J Barney Sing, Neil Greer Griffin
  • Spring release starter
    Publication number: 20040065289
    Abstract: A starter mechanism for an internal combustion engine having a spring that is wound during the starting operation of the internal combustion engine. As the operator pulls the starter rope of the engine the starter spring begins to wind creating a force within the spring. Once the spring force overcomes the compression force of the piston the spring will unwind thereby turning the crankshaft of the engine and consequently starting the engine. The starter rope is returned to the housing of the starter mechanism by the use of a rope return spring.
    Type: Application
    Filed: October 8, 2002
    Publication date: April 8, 2004
    Applicant: MTD Products Inc
    Inventors: Jeremy D. Leasure, Neil Greer Griffin