Drive means in a boat
AssigneeAB Volvo Penta
InventorsNils-Ake Florander, Oddbjorn Hallenstvedt, Kare Jonsson
Life of this patent
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Abstract
Boat propeller drive unit with an underwater housing (5), which is solidly joined to a boat hull and has pulling propellers (15, 16) on the forward facing side of the housing. At the aft edge of the underwater housing, a rudder is mounted, comprising a first rudder blade (22a) mounted in the underwater housing and a second rudder blade (22c) mounted on the aft edge of the first rudder blade.
Claims21
Drive arrangement in a boat, comprising a propeller drive unit fixedly arranged to the outside of a boat hull, having an at least essentially vertical drive shaft, which, via an angle gearing enclosed in an underwater housing, drives at least an essentially horizontal propeller shaft with a tractive propeller arranged on the forward facing side of the underwater housing, a rudder mounted in a wing-profile-like portion of the underwater housing for pivoting about a vertical axis aft of the propeller and a drive unit arranged inside the hull, with which the vertical drive shaft is drivably connected, characterized in that the rudder comprises a first rudder blade (22a), which is mounted in the underwater housing (5) for pivoting about a first vertical pivot axis (s′), and a second rudder blade (22c), which is mounted in an aft-facing edge of the first rudder blade for pivoting relative to the first rudder blade about a second vertical pivot axis (s″).
Drive arrangement in a boat, comprising a propeller drive unit fixedly arranged to the outside of a boat hull, having an at least essentially vertical drive shaft, which, via an angle gearing enclosed in an underwater housing, drives at least an essentially horizontal propeller shaft with a tractive propeller arranged on the forward facing side of the underwater housing, a rudder mounted in a wing-profile-like portion of the underwater housing for pivoting about a vertical axis aft of the propeller and a drive unit arranged inside the hull, with which the vertical drive shaft is drivably connected, wherein that the rudder comprises a first rudder blade, which is mounted in the underwater housing for pivoting about a first vertical pivot axis, and a second rudder blade, which is mounted in an aft-facing edge of the first rudder blade for pivoting relative to the first rudder blade about a second vertical pivot axis, wherein a sealing strip is arranged between the underwater housing and the first rudder blade and between the first rudder blade and the second rudder blade.
A drive arrangement in a boat, comprising:
- a propeller drive unit having an essentially vertical drive shaft, which drives an essentially horizontal propeller shaft with a tractive propeller arranged on the forward facing side of a housing;
- a rudder mounted in the housing for pivoting about a vertical axis aft of the propeller, said rudder comprising a first rudder blade that pivots about a first vertical pivot axis, and a second rudder blade, which is mounted in an aft-facing edge of the first rudder blade and pivots relative to the first rudder blade about a second vertical pivot axis;
- and
- a transmission arrangement which transmits a pivot movement of the first rudder blade relative to the housing to generate a pivot movement of the second rudder blade relative to the first rudder blade about the second pivot axis, said transmission arrangement comprising a steering arm having a forked end, said steering arm being connected to the second rudder blade at an end opposite said forked end, and a fixed vertical steering pin extending into said forked end, so that a certain steering angle of the first rudder blade creates a certain steering angle for the second rudder blade.
Dependencies are inferred from the claim text.