Quotables
"I think there is a world market for maybe five computers."
Thomas Watson, chairman of IBM ; 1943
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7674146 | Propeller thrust transmission device for a watercraft propulsion device A propeller thrust transmission device includes a taper portion of a propeller shaft that is fitted in a spacer divided into a first half and a second half. A thrust force acting on a propeller is received by the taper portion of the propeller shaft through the spac... | 03/09/2010 |
| 7537500 | Ship driven by inboard engines and water jets A ship is disclosed which is driven by inboard engines with propellers and by water jets producing jets of water. The inboard engines are embodied in the form of electric motors and the water jets are used underneath the bottom of the ship. The electric inboard engi... | 05/26/2009 |
| 7431621 | Drive shaft supporting structure for a small boat, and personal watercraft incorporating same A drive shaft supporting structure for a small boat is provided which permits simplification of a hull and for which manufacturing productivity is increased. The drive shaft supporting structure includes a shaft-supporting member for rotatably supporting a drive sha... | 10/07/2008 |
| 7413491 | Marine vessel propulsion structure and marine vessel driving apparatus In an outboard drive or an inboard-outboard drive, power generated by a single engine is transmitted in left and right directions from a main drive shaft, thereby finally causing left and right propellers to be rotated, the left and right propellers being arranged a... | 08/19/2008 |
| 7383782 | Watercraft The invention relates to a watercraft, particularly a river boat, with a hull for receiving useful devices and with propulsion units for generating a driving force and which are located on the hull. The watercraft according to the invention is characterized in that ... | 06/10/2008 |
| 7150152 | Vibration limiter for coaxial shafts and compound turbocharger using same A compound turbocharger is provided, including at least one housing. A first turbocharger having an outer shaft is disposed within the housing, and a second turbocharger is provided having an inner shaft co-axial with and extending within the outer shaft. At least o... | 12/19/2006 |
| 7131385 | Method for braking a vessel with two marine propulsion devices A method for controlling the movement of a marine vessel comprises steps that rotate two marine propulsion devices about their respective axes in order to increase the hydrodynamic resistance of the marine propulsion devices as they move through the water with the m... | 11/07/2006 |
| 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 provided for this purpose, for a propulsion system (10) for shi... | 09/26/2006 |
| 7096810 | Bow mounted vessel propulsion system A bow mounted vessel propulsion system is designed to exploit the characteristics of a self-producing vessel lubricating boundary layer of air or air bubbles formed during water surface interaction by the vessel's hull during vessel movement. This boundary layer of ... | 08/29/2006 |
| 7070469 | Dual propeller surface drive propulsion system for boats The dual propeller surface drive propulsion system for boats is a combined propulsion and steering system for vessels with inboard engines comprising an enclosed thrust bearing assembly mounted to the transom of the vessel, a transom box mounted to the transom of th... | 07/04/2006 |
| 7070468 | Multi-hull watercraft with amidships-mounted propellers An efficient double-ended watercraft is disclosed that comprises four low-Froude number hulls: two forward, two aft, two on the port side, and two on the starboard. Each hull comprises an independent engine that drives a propeller shaft and propeller that is located... | 07/04/2006 |
| 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 to the mounting member for pivoting about a second axis substantially ... | 06/20/2006 |
| 7061147 | Superconducting electrical machines for use in navy ships Superconducting electrical machines, for example motors or generators, especially high-temperature superconducting machines, include a rotor equipped with superconductors, especially high-temperature superconductors. They further include a rotor cryostat, a rotor sh... | 06/13/2006 |
| 7033234 | Method of steering a boat with double outboard drives and boat having double outboard drives A method of steering a planning V-bottomed boat with double individually steerable outboard drive units with underwater housings (6), which extend down from the bottom (1) of the boat. When running at planning speed straight ahead, the underwater housi... | 04/25/2006 |
| 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 relative to the rudder support structure. A first drive train includes a ... | 11/22/2005 |
| 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 |
| 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 the underwater housing, a rudder blade is mounted for pivoting about... | 03/16/2004 |
| 6647704 | Aquatic vegetation shredder having bow and stern mounted high speed, large chopping propellers An aquatic shredder includes a watercraft and a pair of large, high speed propellers mounted at both the bow and stern ends of the watercraft. The propellers are configured to not only propel the watercraft through the water but also to chop vegetation at... | 11/18/2003 |
| 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 |
| 6449931 | Aquatic vegetation shredder having bow and stern mounted high speed, large chopping propellers An aquatic shredder includes a watercraft and a pair of large, high speed propellers mounted at both the bow and stern ends of the watercraft. The propellers are configured to not only propel the watercraft through the water but also to chop vegetation at... | 09/17/2002 |
| 6273768 | Water jet propulsion unit with counter-rotating impellers A water jet apparatus with counter-rotating impellers for propelling a boat. The impellers are coupled by an assembly comprising an impeller shaft secured to a first impeller and a gear train coupling the impeller shaft to a second impeller for counter-ro... | 08/14/2001 |
| 6220906 | Marine propulsion assembly A marine propulsion assembly comprises a drive shaft, a first propeller fixed to the drive shaft and turnable therewith in a first direction, an annular array of gear teeth disposed on the first propeller and turnable therewith, a second propeller aligned... | 04/24/2001 |
| 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 |
| 6116004 | Aquatic vegetation shredder An aquatic vegetation shredder includes a double hull watercraft, with a space being defined between the hulls. The machine also includes an aquatic vegetation shredding assembly mounted to the watercraft adjacent the bow end, and a pair of propellers rot... | 09/12/2000 |
| 6062921 | Propulsion system and power plant for ships or boats and preferably for naval vessels A propulsion system and power plant for boats, preferably for naval vessels, consisting of two Diesel engines, a gas turbine and two drive shafts located next to one another with propellers, is characterized by the fact that there is also a water jet or h... | 05/16/2000 |
| 5896016 | Process for optimizing efficiency in ships with bow and stern screws and arrangement for adjusting the rotation speed of the bow screw Ferries in particular may have identical drives at the bow and stern in order to avoid turning the ship when the direction of travel changes. Normally, when travelling, the rotation speed of the front screw is selected to be lower than the rotation speed ... | 04/20/1999 |
| 5795199 | Propeller drive for watercraft A propeller drive for watercraft, preferably for ferry boats and car ferries, which has two propellers located one behind the other in the center-line plane. The forward propeller is preferably located on a marine shaft which exits the hull, and can be dr... | 08/18/1998 |
| 5697820 | Outboard marine propulsion system A number of embodiments of outboard drive systems that include a combined vertically extending drive shaft driven by the propulsion unit and which drives a generally horizontally extending drive shaft that drives a propulsion device positioned substantial... | 12/16/1997 |
| 5664978 | Propulsion system for a vehicle A propulsion system for a vehicle having a longitudinal axis comprising a single driving source having a driving shaft; a pair of driven elements, each of the pair of driven elements being spaced from and on opposite sides of the longitudinal axis; a firs... | 09/09/1997 |
| 5618213 | Twin impeller drive for jet pump A jet propulsion unit for a watercraft that employs a pair of counter rotating impellers that are disposed immediately adjacent each other so that the need for straightening vanes is eliminated. The impellers are driven by a bevel gear transmission to rot... | 04/08/1997 |
| 5584734 | Lower-unit for marine outboard drive A lower unit of a marine outboard drive has a unique shape which inhibits boundary layer separation within the water flow stream over the lower unit regardless of the trim position of the lower unit. The lower unit includes a nacelle. The front nose of th... | 12/17/1996 |
| 5551900 | Aquatic vegetation cutter An aquatic vegetation cutter for clearing dense aquatic vegetation from waterways uses a drive coupling and bearing assembly that eliminates the need for drive shafts to drive the cutting blades. The bearing is preferably capable of supporting a 90,000 po... | 09/03/1996 |
| 5419724 | Stern tube bearing system for contra-rotating propeller shafts of a water-borne ship A stern tube bearing system for contra-rotating ship's propellers with concentric shafts is configured such that the oil feed to the bearing for the inner shaft is configured so that essentially only the oil ducts located in the lower portion of the rotat... | 05/30/1995 |
| 5326294 | Stern drive for boats A stern drive for an inboard engine mounted in a boat, the stern drive having all of the sensitive bearings inboard of the boat to protect them from water damage, and a screw type trim system mounted on the inside of the boat transom for raising and lower... | 07/05/1994 |
| 5249994 | Surface-drive boat propulsion system An improved propulsion system is provided for inboard motor boats with planing-type hulls. A straight propeller shaft is passed through the bottom of the hull at an angle shallow enough to present a portion of the propeller above the bottom of the hull af... | 10/05/1993 |
| 5230644 | Counter-rotating surfacing marine drive A marine drive (10) has two counter-rotating surface operating propellers (12 and 14). An upper adaptor spool (48) has a lower threaded outer portion (50) mating with a threaded portion (46) of the vertical bore (26) of the drive housing (20) and supporti... | 07/27/1993 |
| 5215486 | Dual propeller out board assembly A dual propeller outboard assembly to be used on a marine vessel so as to provide a pair of independent propeller drives, driven by a single motor, the assembly including a motor, a primary drive shaft drivingly connected with the motor, a first and secon... | 06/01/1993 |
| 5209684 | Marine propulsion device A marine propulsion device including a lower unit, a propeller shaft rotatably supported by the lower unit and to support a propeller, the shaft including a longitudinal axis and a surface defining a plane which is substantially normal to the axis, and a ... | 05/11/1993 |
| 5205764 | Steering mechanism in a boat propulsion system A marine propulsion drive apparatus has an input drive shaft with a propeller shaft extending through the stern of the boat and a drive body extending substantially straight out the stern of the boat and having a propeller at the end thereof. Steering is ... | 04/27/1993 |
| 5183423 | Propulsion system for speedboats The propulsion system includes a series of large inclined propellers which operate like the wheels of a vehicle and have the functions of lifting, propelling and steering the boat on the water.... | 02/02/1993 |
