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| Number | Title | Issue Date |
| 7306497 | Boat propeller and method for assembling the same The present invention relates to a boat propeller and the assembly method therefor. The propeller comprises a hub and a plurality of separated blades to be integrally coupled with corresponding seats that are formed in the hub. Advantageously, during the assembly st... | 12/11/2007 |
| 7278893 | Combined motorboat transom saver and anti-theft propeller lock device A combined support and lock device (10) has a longitudinally extending support portion (20) and a longitudinally extending lock portion (50). The support portion (20) includes a centrally disposed strut (22) having a first end (... | 10/09/2007 |
| 7275325 | Bush cutting machine A bush cutting machine with a tubular operating pole connected to an outlet of an exhaust muffler and doubling as an exhaust passage is provided. Exhaust gases discharged from an engine flow from the exhaust muffler through the operating pole and are then discharged... | 10/02/2007 |
| 7244153 | Propeller cover An inexpensive easy to use and reusable propeller blade cover. The blade cover of the invention may be used on many kinds and sizes of propeller blades, but are particularly suited for use on boat propellers, and can used to prevent damage to property and protect in... | 07/17/2007 |
| 7223073 | Boat propeller A boat propeller comprising a central hub member and an inner hub assembly that defines a longitudinally extending bore having an inner surface. The exterior surface of the central hub member is sized and shaped for disposition therein the bore of the inner hub asse... | 05/29/2007 |
| 7175491 | Assembly system for a marine propulsion device A marine propulsion system is configured to be assembled, as one unitary structure, into a marine vessel. A transom attachment member is provided and is attachable to both an engine and a drive unit to form a single marine propulsion system structure which can be lo... | 02/13/2007 |
| 7153101 | Pulling marine propeller A pulling marine propeller (1) including multiple propeller blades (4) attached to a propeller hub (5). The propeller hub (5) is attachable to a propeller shaft (9) extending from a drive housing (10) located downstream of t... | 12/26/2006 |
| 7144223 | Supercavitating propeller with adjustable cup, and the method to adjust said cup The invention describes a supercavitating propeller with adjustable cup, and a method to adjust the cup. The trailing edge of the propeller blade is characterised by a protuberance with a limited section compared to the blade's section at the conventional trailing e... | 12/05/2006 |
| 7101236 | Marine propulsion unit A marine propulsion unit utilizing a turbine engine is provided as a drop-in module. The propulsion unit includes a base which forms a part of the hull. The propulsion unit includes a drive unit which is mounted to the engine. Both the engine and the drive unit are ... | 09/05/2006 |
| 7090550 | Propeller with variable geometry and method for varying geometry of a propeller The present invention broadly comprises a propeller having a blade assembly with a plurality of linking members operatively connected to change dimensions of the blade assembly as the linking members are moved with respect to one another. It further includes a blade... | 08/15/2006 |
| 7086836 | Dual rate torque transmitting device for a marine propeller A torque transfer mechanism for a marine propulsion system provides a connector mechanism, a first torque transfer mechanism, and a second torque transfer mechanism. A plurality of rods can provide the first torque transfer mechanism and a polymer component is shape... | 08/08/2006 |
| 7052340 | Method and apparatus for air cooled outboad motor for small marine craft An air cooled, belt drive and engine assembly mountable to the transom of small flat bottom boats in much the same manner as water cooled outboard engines with a lower foot that does not extend below the bottom of the boat but extends a sufficient distance behind th... | 05/30/2006 |
| 7048510 | Propeller spinner for a marine propeller A propeller spinner (5) for a marine propeller (1) having multiple propeller blades (2) attached to a propeller hub (3) that is adapted for attachment to a propeller shaft (4) and includes a sacrificial anodic material for protecti... | 05/23/2006 |
| 7047901 | Motorized hydrofoil device A motorized hydrofoil water craft that has a substantially horizontally disposed flotation device that may be configured to receive an adult human in a prone, sitting or standing position. The craft includes a hydro foil, a motor, and a steering mechanism. The hydro... | 05/23/2006 |
| 7040940 | Rotatable lifting surface device having selected pitch distribution and camber profile Rotatable lifting surface devices, such as propellers, impellers, and turbines, and blades for such devices use camber profiles and pitch distributions to obtain performance from flexible devices and blades, made from materials like polymers and polymer-composites a... | 05/09/2006 |
| 7025642 | Boat propeller A boat propeller includes a hub having a front, back, and an axis of revolution extending therebetween. A plurality of blades provide and extend from the hub between the front and back. Each blade includes a surface adjacent of the hub disposed at an oblique angle t... | 04/11/2006 |
| 7008158 | Bolt or nut locking fastener and fastening system A fastening system and assembly functions as a washer ring components but also provides for locking the bolt head end to prevent rotation of the threaded shaft while tightening the nut. The same device can be used alone on the threaded end of a bolt, or in conjuncti... | 03/07/2006 |
| 6976816 | Combination lock washer and spindle bearing assembly The present invention relates to a connection between a spindle and a bearing assembly to retain the bearing assembly on the spindle. A combination lock washer and spindle bearing assembly is provided to include a spindle, thrust washer, lock washer and nut in which... | 12/20/2005 |
| 6928801 | Lawn mower blade stop A lawn mower blade stop for a rotary lawn mower. The blade stop is preferably formed from first and second L-shaped members welded together to form a U-shaped channel with a plate serving as a barrier to rotation of the blade. The U-shaped channel is received on and... | 08/16/2005 |
| 6921305 | Outboard motor An outboard drive unit for a watercraft to allow propulsion of the watercraft in mud and water. The drive unit has a reduction gear assembly mounted between a motor and a propeller assembly, thereby allowing an engine of given capacity to turn a propeller with incre... | 07/26/2005 |
| 6916217 | Boat propeller shield system A boat propeller shield system for protecting a propeller from damage and humans from injury. The boat propeller shield system includes a cover, a front opening within the cover and a zipper extending from a perimeter of the front opening. The cover is preferably co... | 07/12/2005 |
| 6902448 | Marine propulsion unit A marine propulsion unit utilizing a turbine engine is provided as a drop-in module. The propulsion unit includes a base which forms a part of the hull. The propulsion unit includes a drive unit which is mounted to the engine. Both the engine and the drive unit are ... | 06/07/2005 |
| 6882289 | Monitoring and control of watercraft propulsion efficiency Readout devices and controls are provided that alert the user to unusual propeller slip conditions. Embodiments of the invention incorporate some signal processing to account for a progressively greater slip at lower watercraft speeds. Thus, the invention provides s... | 04/19/2005 |
| 6851991 | Hull and propeller arrangement Hull and propeller arrangement for a surface watercraft (1), provided with at least one propeller (3), in addition to which the propeller (3), at high speeds of the watercraft, is surface-piercing, and the propeller (3) is arranged in suc... | 02/08/2005 |
| 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 |
| 6764359 | Marine outdrive assembly An apparatus for use with a vertical shaft lawnmower motor to provide an outboard motor for boat propulsion. The apparatus is comprised generally of a light weight drive housing adapted for a motor to be mounted on one end, and a drive shaft longitudinally disposed ... | 07/20/2004 |
| 6672757 | Blender adapter for an outboard motor A system and method for operating an auxiliary device from an internal combustion engine driven tool without materially affecting the primary function of the tool. The system and method is particularly useful for operating a blender from an outboard motor... | 01/06/2004 |
| 6644926 | Vane structure for a propeller A vane structure for a propeller for engaging fluid and preventing cavitation or the rapid formation and collapse of low-pressure gas bubbles in a liquid. The vane structure for a propeller includes a plurality of spaced vanes that are mounted to and exte... | 11/11/2003 |
| 6616489 | Weed-trimmer adapted with a screw or water wheel Motorized weed-trimming device can contain a screw or water-wheel attachment. The screw-adaptation part may be in the form of a grain auger, post-hole digger, drill bit, water-screw, for example, a propeller, and so forth and the like, and the water-wheel... | 09/09/2003 |
| 6562206 | Anode assembly A propeller attachment is disclosed including a body, the body including an anodic material, at least one projection projecting from the body, and a fastener coupled to the body. An anode is also disclosed including an annular body constructed from an ano... | 05/13/2003 |
| 6477969 | Boat with center pontoon and separate motor mount A center pontoon for a pontoon boat provides improved performance and an adjustable engine mount. The adjustable engine mount makes it possible to adjust the relative position of an outboard engine relative to the waterline of the boat. The center pontoon... | 11/12/2002 |
| 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 |
| 6422905 | Marine propeller, propeller system and components belonging thereto, and a method of connecting a propeller In an adapter for adapting a marine propeller to a housing part of a drive source, the adapter includes a hub-connecting side and a housing-connecting side and a portion for fastening the adapter to a propeller hub.... | 07/23/2002 |
| 6383042 | Axial twist propeller hub A propeller assembly that includes an interchangeable drive sleeve, a resilient inner hub having a bore in which the drive sleeve is inserted, and a propeller including an outer hub in which the drive sleeve and resilient inner hub are inserted, is descri... | 05/07/2002 |
| 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 |
| 6293754 | Method and apparatus for altering the physical properties of fluids A system for fluid processing is provided to control shear, point velocity and pressure in either a Newtonian or non-Newtonian fluid, which includes creation of three fields, namely a dynamic microshear field, a dynamic velocity field and a dynamic pressu... | 09/25/2001 |
| 6234852 | Impeller for water jet pump of watercraft An impeller for a water jet pump of a watercraft having a structure so as to enhance pump efficiency, and to reduce manufacturing cost having a tip portion configured to be fixed to a propeller shaft for being rotated integrally with the propeller shaft, ... | 05/22/2001 |
| 6193572 | Propeller assembly including a cantilever spring A propeller assembly that includes, in an exemplary embodiment, a cantilever spring for securing a propeller to a propeller shaft is described. In the exemplary embodiment, the propeller assembly includes a thrust bearing which tightly fits to an inclined... | 02/27/2001 |
| 6190220 | Protective cover and method for protecting a boat propeller shaft A protective cover and method for protecting a boat propeller shaft and gears within a lower gear housing of a boat includes a cone-shaped casing having an inner surface, an outer surface, a top, and an open bottom. The inner and outer surfaces have an ed... | 02/20/2001 |
| 6135831 | Impeller for marine waterjet propulsion apparatus An impeller for a marine waterjet propulsion system has blades that are configured to reduce cavitation, vibration, noise and physical damage to the major components of the propulsion system or host vessel of installation. The leading edge of each blade o... | 10/24/2000 |
