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US 7,001,229 B2Granted
Water vehicle propeller
OwnerErnest Kettelsoninventor
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OwnerErnest Kettelsoninventor
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In this specification regarding water vehicle propellers, the gist of the technical disclosure resides in the construction of a propeller having elongated blades which extend in a helical path and longitudinally of the hull of a water vehicle in an unbroken length, singly or in aligned sections following the contour of the hull, for substantially its entire length or that portion of the length of a water vehicle in contact with the body of water when under way. The elongated propellers are rotated on their longitudinal axis. In addition, two of such elongated propellers or aligned sections of such propellers are mounted parallel for rotation in opposite directions either within a tubular housing open at the front and rear or mounted directly adjacent the hull with one or more on either side. Spaced apart longitudinal support members are secured below the elongated propellers to prevent contact with an object or objects from below and to support the propellers and hull above any such objects. One of such propellers may be mounted below a forward portion of a vessel and a second below a rearward portion, each propeller being pivotable outwardly in opposite directions from the longitudinal axis of the vessel to enable the vessel to turn more rapidly from one direction to another.
A propeller mechanism comprising a first propeller having a first elongated shaft having a forward end and an opposite rearward end, a first elongated helical blade affixed to said first elongated shaft, said first elongated helical blade having a first end closest to said forward end of said first elongated shaft and an opposite second end closest to said rearward end of said first elongated shaft, said first elongated helical blade extending radially outwardly from said first elongated shaft to terminate outwardly in a first elongated outer blade edge, said first outer blade edge of said first elongated helical blade curving in a first direction of rotation around said first elongated shaft as said first elongated helical blade extends rearwardly from said first end thereof toward said second end thereof to curve in such direction of rotation less than one full rotation around said first elongated shaft to thereupon terminate at said opposite second end of said first elongated blade, a second propeller in side-by side relationship to said first propeller, said second propeller having a second elongated shaft having a forward end and an opposite rearward end, a second elongated helical blade affixed to said second elongated shaft, said second elongated helical blade having a first end closest to said forward end of said second elongated shaft and an opposite second end closest to said rearward end of said second elongated shaft, said second elongated helical blade extending radially outwardly from said second elongated shaft to terminate outwardly in a second elongated outer blade edge, said outer blade edge of said second elongated helical blade curving in a second direction of rotation around said second elongated shaft as said second elongated helical blade extends rearwardly from said first end thereof toward said second end thereof to curve in such direction of rotation less than one full rotation around said second elongated shaft to thereupon terminate at said opposite second end of said second elongated helical blade, said second direction of rotation of said second elongated outer blade edge of said second elongated helical blade around said second elongated shaft being opposite from said first direction rotation of said first elongated outer blade edge of said first elongated helical blade around said first elongated shaft.
A propeller mechanism having a first propeller having a first longitudinal axis, a first elongated helical blade extending along said first longitudinal axis, said first elongated helical blade having a first end and an opposite second end, said first elongated helical blade extending radially outwardly from said first longitudinal axis to terminate outwardly in a first elongated outer blade edge, said first outer blade edge of said first elongated helical blade curving in a helical path in first direction of rotation around said first longitudinal axis as said first elongated helical blade extends rearwardly from said first end thereof toward said second end thereof to curve in such direction rotation less than one full rotation around said first longitudinal axis to thereupon terminate at said opposite second end of said first elongated helical blade, a second propeller side-by-side relationship to said first propeller, said second propeller having a second longitudinal axis, a second elongated helical blade extending along said second longitudinal axis, said second elongated helical blade having a first end and an opposite second end, said second elongated helical blade extending radially outwardly from said second longitudinal axis to terminate outwardly in a second elongated outer blade edge, said outer blade edge of said second elongated helical blade curving in a helical path a second direction of rotation around said second longitudinal axis as said second elongated helical blade extends rearwardly from said first end thereof toward said second end thereof to curve in such direction of rotation less than one full rotation around said second longitudinal axis to thereupon terminate at said opposite second end of said second elongated helical blade, said second direction of rotation of said second elongated outer blade edge of said second elongated helical blade around said second longitudinal axis being opposite from said first direction of rotation of said first elongated outer blade edge of said first elongated helical blade around said first longitudinal axis.
An elongated helical blade propeller in combination with a boat having a hull, a housing extending longitudinally along the bottom of said hull, said elongated blade propeller being mounted for rotation in said housing, said housing having a bottom wall facing downwardly, a longitudinal opening in said bottom wall of said housing for flow of water downwardly there through when said propeller is rotated, and spaced apart support members secured below said longitudinal opening to protect said propeller from contact by an object that might otherwise interfere with rotation of said propeller.
A propeller mechanism to lift and free a water vehicle from a grounded position on the bottom of a body of water, including an elongated housing having a through passageway positioned longitudinally along the bottom of said water vehicle, said housing having a downwardly facing bottom wall, a longitudinal opening along said downwardly facing bottom wall, a water propelling mechanism in said elongated housing to flow water into said housing and downwardly through said longitudinal opening when said water propelling mechanism is operated, including spaced apart support members mounted below said housing and said longitudinal opening to support said water propelling mechanism above and out of contact with the ground and other objects that could otherwise interfere with operation of said water propelling mechanism.
A propulsion assembly and a water vessel having a longitudinal axis, a forward portion and a rearward portion, said propulsion assembly comprising a first forward propulsion mechanism having longitudinal axis mounted below said forward portion of said water vessel, said first forward propulsion mechanism being pivotable between a position wherein the said longitudinal axis of said first forward propulsion mechanism extends in the same direction as said longitudinal axis of said water vessel and a position wherein said longitudinal axis of said first forward propulsion mechanism extends at an obtuse angle toward one side of said longitudinal axis said water vessel, a second forward propulsion mechanism having a longitudinal axis mounted below said rearward portion of said water vessel, said second forward propulsion mechanism being pivotable between a position wherein the said longitudinal axis of said second forward propulsion mechanism extends in the same direction as said longitudinal axis of said water vessel and a position wherein said longitudinal axis of said second forward propulsion mechanism extends at an obtuse angle toward the opposite side of said longitudinal axis of said water vessel, to more rapidly turn said water vessel from one forward direction to another when said first and second forward propulsion mechanisms are positioned at said respective obtuse angles to said longitudinal axis of said water vessel.
Dependencies are inferred from the claim text.