Patents by Inventor Ernest F. Roberts

Ernest F. Roberts 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).

  • Propulsion unit for a water-borne vessel
    Patent number: 4516940
    Abstract: A propulsion unit for a water-borne vessel has a drive transmission assembly comprising a drive shaft and a steering shaft which can be concentric with the drive shaft, a leg depending from the drive transmission assembly, for instance by way of a horizontal axis pivot connection so that the leg can be swung up, and a propeller housing supported on the lower end of the leg for rotary movement about the axis of the leg, for steering the vessel.
    Type: Grant
    Filed: May 18, 1982
    Date of Patent: May 14, 1985
    Inventor: Ernest F. Roberts