| Entries |
| Document | Title | Date |
|---|
| 20080280514 | PROPELLING SYSTEM FOR BOAT - A propelling system for a boat includes a housing adapted to be mounted to a stem of the boat and having a receiving chamber inside and a waterway at a bottom side thereof, a propeller rotatably disposed in the waterway of the housing, a driving device mounted in the receiving chamber of the housing and having a driving member and a linking member pivotally coupled to the driving member, and a guide ring connected to the linking member of the driving device and located in the waterway of the housing in such a way that the guide ring surrounds blades of the propeller and is pivotable relative to the propeller. Thus, the propelling system has the advantage of increasing the utilization of the internal space of the boat. | 11-13-2008 |
| 20090004934 | PROPELLER - An improved propeller design is provided herein. One embodiment includes a propeller with a housing having a diameter sufficient to encloses at least a portion of the propeller blades. The housing may be secured to the ends of the propeller blades. The housing may include a forward facing edge that is flared outwardly. In addition, the housing generally tapers inward aft of the propeller blades reducing the diameter of the housing to form a general funnel shape. In one embodiment, the housing has a rear portion with a substantially constant diameter located aft of the end of the tapered section. Outer blades may be secured to the outer portion of the housing. These outer blades may be useful to, for example, provide additional rear thrust when the boat is shifted into reverse. | 01-01-2009 |
| 20090163089 | Propeller Assembly Incorporating Spindle With Fins And Overmolded Bushing - A propeller assembly is provided for mounting on a rotatable propeller shaft of a watercraft. The propeller assembly includes a housing structure extending along a longitudinal axis. The housing structure includes an outer surface and an inner surface defining a cavity having a polygonal-shaped cross-section defined by at least one corner and at least one sidewall. A bushing assembly is receivable in the cavity of the housing structure. The bushing assembly includes a spindle having an inner surface defining a passageway for receiving the propeller shaft therethrough and an outer surface having a plurality of circumferentially spaced fin pairs extending therealong. Each fin pair includes a first fin extending from the outer surface of the spindle and a second fin extending from the outer surface of the spindle at a predetermined angle to the first fin. The bushing assembly also includes a bushing positioned between the spindle and the inner surface of the housing structure. | 06-25-2009 |
| 20110059663 | ADVANCED FOIL DESIGN METHOD AND STRUCTURE FOR MULTI SPEEDS - Advanced foil design method and structure for multi speeds mainly adds a constraint according to a needed pressure distribution of the advanced foil after building an advanced foil environment. Thence, a step of optimization could be applied for analyzing the advanced foil by flow characteristics to achieve a shaped profile, so that a weight calculation weighted calculation would be further operated base on a proportion of the advanced coil applied to multi speeds. Accordingly, a preferable profile of the advanced foil and the environment parameter combination can be obtained to enhance a higher operative efficiency with the preferred benefit of the Supercavitating propeller while applied to a higher speed and with the profit of a stable competence while applied to a lower speed. | 03-10-2011 |
| 20120122356 | Support of propeller unit for a vessel - The present invention relates to a rim driven propeller unit for a vessel, where a number of permanent magnets ( | 05-17-2012 |
| 20130102209 | PROPULSION DEVICE AND SHIP USING THE SAME - A propulsion device of the ship includes a port side screw propeller; and a starboard side screw propeller provided in a forward or backward direction in a longitudinal direction of the ship from the port side screw propeller, such that a part of propeller wings of the starboard side screw propeller overlaps with propeller wings of the port side screw propeller. One of the port side screw propeller and the starboard side screw propeller, which is on a forward side in a longitudinal direction of the ship, is the forward screw propeller, and the other is the backward screw propeller. The forward screw propeller has a wing shape by which tip vortex cavitation is more difficult to be generated by the forward screw propeller than the backward screw propeller. | 04-25-2013 |
| 20150064996 | BUOYANT STRUCTURE FOR PETROLEUM DRILLING, PRODUCTION, STORAGE AND OFFLOADING - A buoyant structure having a hull, a planar keel defining a lower hull diameter, a lower cylindrical portion connected to the planar keel, a lower frustoconical portion disposed above the lower cylindrical portion with inwardly sloping wall at a first angle, an upper frustoconical portion directly connected to the lower frustoconical portion, and the upper frustoconical portion with outwardly sloping wall, the inwardly sloping wall abutting the outwardly sloping wall forming a hull neck with a hull neck diameter. The buoyant structure having a main deck, a moon pool, and propellers attached to the planar keel, which are operated by a motor or a generator. The buoyant structure connects over a chambered buoyant storage ring. | 03-05-2015 |
| 20150111447 | Weed-trimmer outboard motor - Weed-trimmer outboard motor attachment has a lower shaft housing with a proximal coupling to correspondingly mate and engage a distal mid-shaft coupling of an upper part of a motorized weed-trimming device having a motor and a shaft that rotate a number of rotations per minute when operating; a distal termination thereto, which includes a propeller; and a rotation speed reduction unit to reduce a number of rotations of the propeller in relation to the number of rotations of the motor of the motorized weed-trimming device. The attachment can be assembled with the weed-trimming device to provide an outboard motor. A mount for mounting the weed-trimmer outboard motor to a boat can be provided as well. | 04-23-2015 |
| 20160107737 | APPARATUS FOR PROPELLING WATERCRAFT - An apparatus for use in propelling a watercraft having:
| 04-21-2016 |
| 20160152313 | SMALL WATERCRAFT FOR LEISURE USE | 06-02-2016 |
