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US 6,659,395 B2Granted
Propellers and propeller related vehicles
AssigneeRehco, LLC
InventorsJeffrey Rehkemper, Keith Johnson, Nicholas Grisolia
Life of this patent
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AssigneeRehco, LLC
InventorsJeffrey Rehkemper, Keith Johnson, Nicholas Grisolia
Estimating the term…
A propeller related vehicle in accordance with one embodiment of the present invention is described as a helicopter having an airframe housing a motor mechanism for powering a main propeller attached to a main drive shaft that extends vertically through the airframe and for powering a tail rotor. The helicopter further includes a horizontal stabilizing mechanism attached between the main propeller and the main drive shaft, which permits the main propeller to freely pivot about the main drive shaft independently from the airframe. As such when the main propeller is rotating and the main propeller begins to pitch, the rotating main propeller has a centrifugal force created by the rotation thereof and will tend to pivot about the horizontal stabilizing mechanism in a manner that offsets the pitch such that the helicopter remains in a substantially horizontal position. In addition various main propeller configurations may be employed that provide additional self-stabilization.
A helicopter having an airframe housing, a motor mechanism for powering a main propeller attached to a main drive shaft that extends vertically through the airframe and for powering a tail rotor, the helicopter further comprising a horizontal stabilizing means attached between the main propeller and the main drive shaft, which permits the main propeller to freely pivot about the main drive shaft independently from the airframe, wherein when the main propeller is rotating and the main propeller begins to pitch, the rotating main propeller having a centrifugal force created by the rotation thereof will tend to pivot about the horizontal stabilizing means in a manner that offsets the pitch such that the helicopter remains in a substantially horizontal position.
A self-stabilizing propeller for use in an rotary-type aircraft wherein the propeller is rotatably attached to a drive shaft and rotates in a plane, the propeller comprising:
An aircraft having an airfame housing a motor mechanism for powering at least one substantially horizontal orientated propeller, each propeller is attached to a corresponding drive shaft that extends vertically through the airframe, the aircraft further comprising at least one horizontal stabilizing means attached between one of the propellers, of the at least one propeller, and the corresponding drive shaft, which permits the propeller to freely pivot about the corresponding drive shaft independently from the airframe, wherein when said propeller is rotating and said rotating propeller begin to pitch, the rotating propeller having a centrifugal force created by the rotation thereof will tend to pivot about the horizontal stabilizing means in a manner that offsets the pitch such that the aircraft remains in a substantially horizontal position.
A self-stabilizing aircraft having at least one propeller comprising:
A propeller comprising:
Dependencies are inferred from the claim text.