Matches 1 - 50 out of 64 1 2 >
Match Document Document Title
7112109 Propulsion system for ships, in particular for cruise vessels  
For avoiding a high permanent load of the main and control drives rotatable around the vertical axis for ships for the straight forward sailing by a small and compact course keeping rudder system...
7063031 Wake control device for boat  
A wake control device for a boat, including a mounting member pivotally securable to the boat aft for pivoting about a first axis substantially transverse to the boat aft, a rudder member secured...
7013820 Ship and operating method therefor  
A ship has a main propeller 2 which can move the ship forward and reverse by normal rotation, reverse rotation or by changing the pitch angle. A drive unit drives the main propeller 2 . A rudder...
6994602 Ship propulsion system  
A ship propulsion system includes at least one marine propeller, at least one electric motor which drives the at least one marine propeller, and an inverter-fed power supply system which supplies...
6966804 Propulsion unit of marine vessel  
A marine vessel includes a rudder support structure attached to its hull and a rudder device attached to the rudder support structure in a manner allowing pivotal movement of the rudder device...
6790108 Boat propulsion system  
A boat propulsion system for propelling a boat through water with debris in the water and shallows. The boat propulsion system includes a motor assembly being designed for being positioned in a...
6783410 Drive means in a boat  
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...
6705907 Drive means in a boat  
Boat propeller drive with an underwater housing which is connected in a fixed manner to a boat hull and has tractor propellers arranged on that side of the housing facing ahead. In the rear edge of...
6503109 Swivel drive assembly  
A swivel drive assembly for an electrically powered boat. The swivel drive assembly comprising a housing which has a propeller shaft extending therethrough and a propeller mechanically coupled to...
6165031 Marine propulsion and steering unit  
A marine propulsion and steering unit (10) comprises a pod (13) having front and rear ends, a driving machine (14), e.g. a drive motor, accommodated in the pod, a substantially horizontal propeller...
5902157 Rudder attachment for trolling motor  
An electric trolling motor has a motor body with a propeller, and a vertical shaft extending upward from the motor body. A rudder attachment having forward, rearward and lower portions is secured...
5638765 Hydrofoil assembly for marine use, and method for mounting the same  
A method and an assembly are provided for mounting a pair of hydrofoils to an outboard engine without drilling holes or otherwise defacing the anticavitation plate of the engine. The assembly...
5439403 Marine tractor surface drive system  
A marine tractor surface drive propulsion system is provided with a housing construction that can be retrofit to existing boat hulls and does not require a dedicated hull, with a parallel...
5279509 Marine surface drive  
A surface drive is provided mounted from the stern of a hull for up and down swinging movement in the manner of an outdrive unit, but wherein the surface drive includes a forwardly and upwardly...
5231950 Hydrofoil for watercraft  
A hydrofoil for watercraft is provided. The hydrofoil includes a generally flat body including an upwardly extending wing for providing low speed torque control and rudders extending from the...
5167547 Rudder for watercraft  
Several embodiments of jet propelled watercraft including steering rudders pivotally supported by the steering nozzle of the jet propulsion unit for providing a steering affect at low speeds and...
5129346 Rudder sleeve for boat rudder  
A rudder sleeve for enlarging the surface area of a boat rudder includes first and second stainless steel plates having four side edges defining first and second opposed major hydrodynamic...
5085603 Marine drive with steering torque compensation  
A marine drive (20) has a trim tab (50) with a flair (56) on one side (58) thereof at an upper portion (52). When the drive is trimmed in, the flair is unshrouded by the anti-ventilation plate (34)...
5037337 Steerable propeller drive apparatus  
The invention comprises a steerable propeller unit for use in place of a steerable rudder and fixed propeller on watercraft employing inboard straight line propulsion systems. A coupler is fitted...
5016553 Vector steering control system  
The device comprises a thruster assembly which consists of a housing, thruster motor, thruster propeller, and thruster motor control device. When integrated into a stern mounted main drive, the...
5005507 Hydrofoil with retractable plate  
A hydrofoil adapted for attachment to a boat propulsion unit. The hydrofoil defines a recessed area on its underside in which a trolling plate may be positioned. A pivot shaft couples the plate to...
4944702 Housing rudder for electric trolling motor  
A device is provided for attachment to the submerged portion of an electric trolling motor to serve as a rudder and to further provide quieter operation and resistance to fouling by aquatic...
4929203 Marine propeller drive system  
A propeller drive system for marine applications having a constant velocity universal joint for articulating the propeller shaft without transmitting the propeller thrust therethrough, the...
4762079 Trim tab actuator for marine propulsion device  
A trim tab actuator for a marine propulsion device wherein a plurality of watercraft running conditions are sensed and a trim tab is automatically positioned so as to maintain the watercraft in its...
4759732 Trim tab actuator for marine propulsion device  
An improved trim tab actuator for a marine propulsion device wherein steering sharpness is improved by providing a pivotally supported trim tab that is steered in response to sensed steering...
4708672 Boat stabilizer  
A boat stabilizer is disclosed for substantially eliminating "porpoising" or up and down movement of the bow portion of a boat as the boat is moving through the water. The stabilizer includes a...
4693689 Controlling gear for outboard engine  
An outboard motor embodying an improved throttle and trim tab control mechanism. A trim tab is pivotally supported by the outboard motor for assisting in its steering operation. The trim tab is...
4634388 Rudder for electric trolling motor  
A rudder is disclosed for an electric trolling motor in which the rudder is mounted on the shaft thereof above the propeller and in proximity thereto; the rudder comprises a flat portion and at...
4592299 Ship's-vessel's rudder with reduced drag effected factors  
An upstanding panel-like body is provided including top, bottom and front and rear margins and opposite side surfaces extending between those margins. The opposite side surfaces are generally...
4563155 Steering post mounted propulsion assembly  
Disclosed herein is a marine propulsion device for a boat hull having a transom, which device comprises a steering post having a longitudinal axis and adapted to be connected to the boat transom...
4553945 Boat propulsion  
A safety shroud for attachment to the rear surface of the transom of an unmodified boat hull equipped with an inboard engine and a propeller tube and shaft rigidly fixed to the engine and extending...
4509924 Control system for torque correcting device  
This invention provides a marine propulsion device comprising a propulsion unit, a transom bracket adapted to be fixedly connected to a boat transom and a swivel bracket mounted on the transom...
4493657 Device for converting a cycle into a treadle-operated water cycle  
A conventional bicycle has its frame rigidly supported by a base framework held by adjustable length outrigger arms, whose outer ends are connected with bearings mounted on two spaced floats. The...
4487587 Skeg mounted vane steering system for marine drives  
An improved vane steering system for marine drives has the steering vane mounted in the skeg of the propulsion unit. With such a mounting location, the steering vane is submerged in the water in...
4482331 Dampener for vane steering of marine drive  
A steering system (15) for a boat (16) includes a dampening apparatus (130) providing a fluid filled piston assembly (131) having a cylindrically shaped fluid containing housing (132) pivotally...
4443202 Surface propeller mounting assembly for boats  
A unitary assembly (10) for mounting a surface propeller (52) on the transom (T) of a boat hull (H). The assembly comprises a plate (12) for attachment to the hull (H); a prop shaft support (16)...
4416636 Connector for vane steering of marine drive  
A steering system (15) for a boat (16) provides a loss motion connector (85) having a cavity (87) to rotatably retain a selectively movable input member (79). The cavity (87) includes a pair of...
4355985 Marine propulsion device with self-centering steering mechanism  
Disclosed herein is a marine propulsion device comprising a lower unit, a swivel bracket on the lower unit adapted for connecting the lower unit to the transom of a boat for steering movement about...
4352666 Marine propulsion device with trim sensitive movable trim tab  
Disclosed herein is an outboard motor comprising a propulsion unit including a rotatably mounted propeller, structure adapted to be fixedly connected to a boat transom and connected to the...
4349341 Vane steering system for marine drives  
A marine drive has a high aspect ratio, counterbalanced vane on the propulsion unit for generating hydrodynamic torque when rotated. Control cables fastened to a bar on the vane post extend to the...
4318701 Power steering system for boats  
A power steering system for outboard motors or inboard/outboard units for boats having a pivoted motor assembly so that by pivotation of the assembly the boat is steered, the system including a...
4310319 Steerable propeller  
A propeller that can be steered to the left or the right of the center line of a boat's keel in order to increase the steerability of a boat or craft driven by a conventional straight line drive...
4290760 Maneuvering device for sailing boats  
The invention relates to the provision of an easily operated maneuvering device for sailing boats, which gives the boat in question a maximum of maneuverability also at low travelling speeds and...
4106425 Marine propulsion unit with protected screw  
The screw of a marine propulsion unit is mounted in a passage of an elongated casing in an axially central position. The two axially terminal portions of the passage contain protective devices for...
4089289 Movable boat propulsion apparatus  
A movable boat propulsion apparatus for use with an inboard drive comprising a drive assembly disposed within a pivotally mounted housing coupled at one end to the drive by a universal joint and...
4048751 Remotely steered toy boat  
A drive for a remotely steerable toy boat includes a reversible motor, a propeller shaft and a propeller. A stationary deflector shield is disposed laterally of the propeller. When the propeller is...
3991700 Rudder attachment for outboard motors  
A rudder attachment for outboard motors comprising an upright blade or rudder adapted to be removably attached to the gear case or lower end assembly of the motor behind the propeller. The...
3941072 Steering system for canoes  
A steering system that is easily attached to and removed from a canoe wherein the system includes a first frame section having adjustable brace members and a sling assembly for gripping the end...
3899992 Marine steering device  
A propeller duct or nozzle provided with controllable passageways and modulated for the purpose of developing a controllable athwartship thrust which may be used without rudder deflection or drag...
3828718 AUXILIARY RUDDER  
An auxiliary rudder that is attachable to any outboard motor so to serve as a steering device; the auxiliary rudder consisting of a flat steel plate to each opposite side of which an offset bracket...
Matches 1 - 50 out of 64 1 2 >