Patents Assigned to R. Dale Pelfrey
  • Internal combustion engine
    Patent number: 8347841
    Abstract: An internal combustion engine includes a rotary valve such that said rotary valve serves as an output shaft for said engine.
    Type: Grant
    Filed: March 29, 2012
    Date of Patent: January 8, 2013
    Assignee: R. Dale Pelfrey
    Inventor: Riley Dale Pelfrey