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| Number | Title | Issue Date |
| 7927160 | Variable pitch propeller A propeller assembly has first and second propeller blades pivotably mounted on a propeller hub. The first and second propeller blades are pivotable with respect to the propeller hub about corresponding first and second pivot axes to vary a pitch of the first and se... | 04/19/2011 |
| 7597598 | Propeller for a marine propulsion system A marine propulsion system comprising a push rod activated pins (170) which engage eccentric shaft (174) for unlocking a propeller base (190) so the base (190) can rotate around a transverse axis. The base (190) has an inclined sur... | 10/06/2009 |
| 7357686 | Boat propeller with adjustable blades for adjusting the pitch thereof A boat propeller comprises a hub formed of a first cylindrical member and a second cylindrical member detachably joined together. The second cylindrical member comprises a plurality of insertion cavities formed in the second cylindrical member, an end of each of the... | 04/15/2008 |
| 7241193 | Variable marine jet propulsion A variable marine jet propulsion system incorporates a motor, a variable-pitch propeller pump in a spherical housing, a variable housing and a variable inlet duct, and a microcontroller. The pump, the nozzle and the inlet are controlled by the microcontroller, which... | 07/10/2007 |
| 7156707 | Marine propulsion system A marine propulsion system comprising a push rod (50) for adjusting the pitch of propeller blades (34). The push rod (50) has a screw-threaded bolt (60) engaged with a nut (78). The nut (78) carries a bevel gear (84) ... | 01/02/2007 |
| 7101237 | Propellor blade adjustment system for propulsion through fluid environments under changing conditions The stern end of a seawater hull has a rotor hub with propeller blades thereon. The rotor hub is rotated for propulsion of the hull by means of a propeller shaft extending through a sealed compartment within the hull. Such sealed compartment and an electrically powe... | 09/05/2006 |
| 7064503 | Active noise compensation A method is for controlling a multi-phase electrical ship propulsion motor that is supplied with electric energy via a power converter. The ship propulsion motor is preferably a permanently excited motor with at least three windings. The phase currents flowing in th... | 06/20/2006 |
| 7048506 | Method and apparatus for magnetic actuation of variable pitch impeller blades An integrated propulsion and guidance system for a vehicle includes an engine coupled to an impeller via a driveshaft to produce propulsive force. The impeller includes a hub and a plurality of blades, including at least one control blade pivotably mounted to the hu... | 05/23/2006 |
| 6926566 | Method and apparatus for synchronous impeller pitch vehicle control An integrated propulsion and guidance system for a vehicle includes an engine coupled to an impeller via a driveshaft to produce propulsive force. The impeller includes a hub and a plurality of blades, wherein one or more of the blades is pivotably mounted to the hu... | 08/09/2005 |
| 6896564 | Motor for driving a propeller including a phase adjuster A motor for driving a propeller is disclosed which has a drive shaft (10) which is coupleable to a propeller shaft (20) by bevel gears (12 and 14) so as to rotate the shaft (20) to in turn rotate propeller blades P of an outboard m... | 05/24/2005 |
| 6837760 | Method for modifying engine loading through changing of propeller blade shape by bending a propeller blade edge to modify the section camber and pitch of the blade, and propellers made using the same The present invention is directed to a method of altering the pitch of a propeller through localized bending of its blades. To alter the propeller's pitch the camber of at least one of its blades is changed by bending a portion of a trailing edge, a leading edge, or... | 01/04/2005 |
| 6688926 | Motor for driving a propeller including a phase adjuster for altering the pitch of the propeller blades A motor for driving a propeller is disclosed which has a drive shaft (10) which is coupleable to a propeller shaft (20) by bevel gears (12 and 14) so as to rotate the shaft (20) to in turn rotate propeller blades P of an outboard motor. The drive shaft (2... | 02/10/2004 |
| 6431926 | Ribbon drive propulsion system and method A ribbon drive propulsion apparatus and method for water-borne vessels such as surface craft and submersibles is disclosed. The vessel is equipped with an extended tube having an intake at a first end and an outlet at a second end. A ribbon formed of heli... | 08/13/2002 |
| 6425788 | Controllable-pitch propeller The invention relates to a propeller suited for installation in boats and vessels and having a run-time controllable pitch of propeller blades (4). The propeller comprises a hollow hub casing (2) containing a sleeve (10) adaptable about the propeller shaf... | 07/30/2002 |
| 6332818 | Propulsion system A propulsion system for a water craft having at least one shaft extending rearwardly form the transom of the hull of the craft and a drive system for driving the at least one shaft. A surface piercing propeller is mounted on the at least one shaft, proxim... | 12/25/2001 |
| 6276898 | Variable pitch marine propeller A variable-pitch marine propeller system has a propeller unit for mounting on a drive shaft, and a power unit including a stationary annular hydraulic cylinder for operating the propeller unit, a hydraulic remote control unit being fluid-coupled to the po... | 08/21/2001 |
| 6264512 | Combined throttle and propeller-pitch control for boat A boat drive having a variable-speed engine connected through a clutch to a variable-pitch propeller has a control having a housing and a guide on the housing defining a central crosswise track having a travel end and a start end, forward and backward tra... | 07/24/2001 |
| 6250979 | Boat drive with variable-pitch propeller A boat drive has a housing, a tube shaft rotatable in the housing about a shaft axis and having axially opposite front and rear ends, a hub carried on the shaft rear end, and a plurality of radially projecting vanes pivotal on the hub. An axially shiftabl... | 06/26/2001 |
| 6139272 | Hydraulic machine A device is used in a hydraulic machine of the type which comprises a runner or rotor with a hub body and vanes or blades which are rotatably journalled in bearings in the hub body, and which has at least one chamber which communicates with the bearings. ... | 10/31/2000 |
| 6062925 | Service vessel operating method A service vessel that is designed for navigating both in the open sea and in ice conditions is provided with a demountable propeller nozzle. For an ice-free navigation period the propeller nozzle is mounted around the propulsion propeller of the vessel, w... | 05/16/2000 |
| 6056609 | Adjustable-pitch propeller, especially for sport boats The positions of blade members on a hub of a propeller for a sport boat is determined by replaceable keys or plates fitted into openings of corresponding shape and having differently located bores determining the pitch setting. The recess can be in the se... | 05/02/2000 |
| 5967753 | Controllable-pitch propeller, especially for sport boats and other watercraft A controllable-pitch propeller for a sport-type watercraft has a push rod eccentrically connected to each blade displaceable in a bore of the propeller hub. The push rod is sealed with respect to the end of that bore by a multifold bellows whose radial fl... | 10/19/1999 |
| 5967750 | Variable pitch marine propeller A variable-pitch marine propeller system has a propeller unit for mounting on a drive shaft, and a power unit including a stationary annular hydraulic cylinder for operating the propeller unit, a hydraulic remote control unit being fluid-coupled to the po... | 10/19/1999 |
| 5863230 | Universal marine drive apparatus and uses thereof Described is novel apparatus for rendering a watercraft propulsion system universal. One embodiment of the invention comprises a rotary shaft; a propeller detachably attached to one end of the rotary shaft, the other end of the rotary shaft being configur... | 01/26/1999 |
| 5851131 | Self-adjusting variable pitch propeller A self-adjusting, variable pitch propeller comprising: a central hub defining a propeller rotation axis; a plurality of blade assemblies symmetrically disposed about the hub, each assembly having a substantially cylindrical segment with a propeller blade ... | 12/22/1998 |
| 5803776 | Partially immersible propeller The propeller comprises a propeller shaft mounted so that its position in relation to the ship's hull can be varied both at stopovers or in transit. The propeller shaft carries propeller blades of such a configuration that, while going into the water, the... | 09/08/1998 |
| 5466177 | Variable propeller for boat A sleeve 18 spline-fitted in an outer periphery of a propeller shaft 4 is connected to a propeller boss 12 for surrounding the outer periphery of the sleeve by a damper rubber 20 interposed in superposed relation therebetween, and in a recess formed in th... | 11/14/1995 |
| 5249992 | Marine propulsion unit with controlled cyclic and collective blade pitch An integral marine propulsion unit utilizes both collective and cyclic propeller blade pitch angle variations to generate a thrust vector in any of three degrees of motion for use with both the submersible and surface marine vessels. The present marine pr... | 10/05/1993 |
| 5226844 | Actuator for variable-pitch propeller A drive for a boat has a propeller hub rotatable about a main axis extending in a normal travel direction, a plurality of blades projecting generally radially of the main axis from the hub and each pivotal so as to be of variable pitch, and respective bla... | 07/13/1993 |
| 5073134 | Boat drive with adjustable pitch propeller A boat drive of the type in which a housing outside the hull of the board and below the water level receives a hollow propeller shaft driven by a drive shaft connected to the propeller shaft by a transmission. The hub of a variable pitch propeller is moun... | 12/17/1991 |
| 5061212 | Ship drive with variable-pitch propeller A variable-speed propeller in a ship drive has the hydraulic valves feeding the working chambers of the hydraulic drive for the variable-speed propeller formed as electromagnetic valves controlled by timing relays which can be switched by a rocker switch ... | 10/29/1991 |
| 5046973 | Boat propeller A ship propeller arrangement (1), in particular for motor boats, has a propeller being operated with super-cavitative rotating speed and having its propeller blades (5) provided with step bearings (7) being swivelable around threaded bolts (6), which are ... | 09/10/1991 |
| 5035662 | Arrangement in connection with azimuth propeller drive means for ships An arrangement in connection with an azimuth propeller for ships to measure the angle between the rotational axis of the propeller and the longitudinal axis of the ship (azimuth angle), and the angle of attack of the propeller blades. The azimuth propelle... | 07/30/1991 |
| 5028210 | Propeller unit with controlled cyclic and collective blade pitch An improved integral marine propulsion unit is disclosed that can generate a thrust vector in any of three degrees of motion. The unit utilizes both collective and cyclic propeller blade pitch angle variation to generate these thrust. This unit obviates t... | 07/02/1991 |
| 4964822 | Variable pitch propeller for watercraft A watercraft has a hull and a hollow support body secured below the hull. A propeller drive shaft is disposed rotatably in the body with one end extending out of the body and is adapted for connection to a driving engine. A main bearing for the drive shaf... | 10/23/1990 |
| 4960397 | Variable pitch propeller assembly A variable pitch propeller assembly includes a hollow casing which, at its inner surface, fits securely around the propeller shaft. The outer surface of the casing forms the general shape of a cylinder which is coaxially located with respect to the propel... | 10/02/1990 |
| 4941802 | Multi-bladed propulsion apparatus The present invention provides for a propulsion apparatus for fluid medium comprising an open-ended sleeve having an inlet and outlet for flow through of fluid and a series of cooperating blades positioned along the sleeve. Each of the blades has a leadin... | 07/17/1990 |
| 4929201 | Variable pitch marine propeller system 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 l... | 05/29/1990 |
| 4907992 | Oil distribution box for a marine controllable pitch propeller An oil distribution box for a marine controllable pitch propeller of the type having a main hydraulic servo within a hub for controlling the pitch of propeller blades rotatably carried by the hub and including a directional valve actuated by a tubular val... | 03/13/1990 |
| 4906213 | Apparatus for detecting the pitch of a marine controllable pitch propeller The pitch of a marine controllable pitch propeller is detected by a motion/DC current transducer in the propeller hub. Circuitry rotating with the propeller shaft converts an AC power signal to DC for energization of the transducer and converts a DC outpu... | 03/06/1990 |
