Patents by Inventor John W. Wrin

John W. Wrin 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).

  • Engine construction
    Patent number: 4026252
    Abstract: A two-cycle engine wherein a pair of pistons are mounted within a pair of cylinders which are arranged in an oppositely facing in-line manner with the connecting rods of both pistons being also in-line and rotatably mounted upon a crank shaft, the crank shaft extending through and rotatably mounted in respect to a planetary gear carrier.
    Type: Grant
    Filed: August 8, 1975
    Date of Patent: May 31, 1977
    Inventor: John W. Wrin