Patents Assigned to Vari-Prop, Inc.
  • Patent number: 4929201
    Abstract: A variable pitch marine propeller comprising two removable symmetrical propeller blades with cylindrical bases each having a drive lug attached proximate the driving edge of the point of attachment of each blade. A coupling are associated with the drive lugs of the bases and structured to hold the blades by the bases to align and simultaneously rotate the pitch of the blades in equal and opposite directions in response to movement of the coupling. A hub sub-assembly encases the coupling and bases of the blades to allow the blades to pivot and assume a forward or rearward pitch. The hub sub-assembly has a front end, and a rear end capable of mounting onto a drive shaft. A spring is associated with the coupling to initially position said coupling in a position which holds the blades in a rear pitch configuration.
    Type: Grant
    Filed: April 6, 1987
    Date of Patent: May 29, 1990
    Assignee: Vari-Prop, Inc.
    Inventor: Donald R. Pitt