Bizarre Patents
Mountable Printable Placard With Headband
A resilient headband in a shape for being mounted on the head of the user. The headband is equipped with a longitudinal slotted member for holding a placard.
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| Number | Title | Issue Date |
| 7666040 | Watercraft swivel drives Enhanced watercraft performance is provided by combinations of one or more inboard swivel propulsion drives and hull tunnels. A tunnel at the hull centerline with specific features provides performance advantages for a center swivel propulsion drive. Use of front pr... | 02/23/2010 |
| 7549903 | Method and auxiliary device for disassembly/assembly of a tunnel thruster The present invention relates to a method and an auxiliary device in connection with disassembly and/or assembly of a tunnel thruster unit by use of the auxiliary device (1) to guide the thruster unit (2) and its movement during disassembly/assembly in... | 06/23/2009 |
| 7424859 | Shallow water boat A shallow water boat is shown that operates well in both shallow water and deep water. A tunnel is provided along a centerline of a flat bottom, which tunnel starts near amidships increases in depth and terminates at the aft of the shallow water boat. A top of the t... | 09/16/2008 |
| 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 |
| 7371140 | Protective marine vessel and drive A marine vessel and drive combination includes port and starboard tunnels formed in a marine vessel hull raising port and starboard steerable marine propulsion devices to protective positions relative to the keel. ... | 05/13/2008 |
| 7366593 | Method and system for maneuvering movable object A movable object maneuver method wherein a destination point is set; wherein a thrust value is calculated in real time which minimizes or maximizes a performance index associated with one or more state variables and thrust required for a movable object to reach the ... | 04/29/2008 |
| 7338336 | Watercraft hull with adjustable keel A watercraft hull having a pair of laterally spaced propulsion tunnels located on opposite sides of its keel, with said tunnels being open downwardly towards the water, includes a movably mounted keel section located between said propulsion tunnels to prevent water ... | 03/04/2008 |
| 7299763 | Hull with propulsion tunnel and leading edge interceptor A boat hull has at least one ventilating propulsion tunnel formed therein open to the water forward of the hull's transom and adapted to contain a propeller of the propulsion system. The tunnel has a leading edge forward of the transom and an interceptor plate proje... | 11/27/2007 |
| 7270583 | High efficiency watercraft propulsion system A propulsion system for a watercraft includes a concavity formed in a hull of the watercraft. The concavity has a minimum depth at its leading end and a maximum depth at its trailing end. An impeller is mounted in the trailing end of the concavity and a stator trail... | 09/18/2007 |
| 7234983 | Protective marine vessel and drive A marine vessel and drive combination includes port and starboard tunnels formed in a marine vessel hull raising port and starboard steerable marine propulsion devices to protective positions relative to the keel. ... | 06/26/2007 |
| 7148416 | Undersea vehicle An undersea vehicle having both low emitted noise and low reflectivity is provided. The undersea vehicle has a hollow cylindrical hull with all components, sensors, electronics, motors, and other internal components with the exception of the propellers, located with... | 12/12/2006 |
| 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 |
| 6923137 | Water sports performance boat hull A water sports performance boat includes a hull having a sharpened angle keel for cutting into the water. Reverse chines are carried on port and starboard sides and extending from a forward portion of the hull to an aft portion for inducing a lifting of the bow at g... | 08/02/2005 |
| 6773316 | Non-ventilating aft thruster tunnel design A modified boat hull, providing for dual, non-ventilating aft thruster tunnels. Each tunnel includes a generally tubular section which fluidly communicates with the transom outlet orifice, and a converging transition section which communicates at the extreme opposit... | 08/10/2004 |
| 6464549 | Bottom assembly for surface propeller propulsion systems A bottom assembly for motor boats is described, of the type including at least one longitudinal tunnel, through which passes a propeller shaft exiting from the bottom, wherein there is provided at least one ground wall to close, totally or partially, the ... | 10/15/2002 |
| 6309266 | Ship propulsion and steering systems A propulsion and steering system for reducing water mounding along and under a bow and hull of a mono-hull ship thereby enhancing displacement of water by the hull and permitting increase of the beam to length ratio of the ship comprising two or more thru... | 10/30/2001 |
| 6213824 | Method for reducing vessel draft An improved method for raising a propeller up into the hull of a marine water craft for the purpose of reducing the likelihood of underwater impact and improving shallow water operation without encountering the high efficiency losses normally associated w... | 04/10/2001 |
| 5765499 | Hydro-thrust canoe The present invention relates to a canoe that is propelled by a motor. The motor having a shaft and a propeller contained within a hydrodynamically designed housing. The housing further having an inlet and an outlet whereby when the propeller rotates prod... | 06/16/1998 |
| 4767370 | Sailboard watercraft A sailboard has a hull (10) which is of smooth rounded elongated shape of little depth and tapers down in width and in depth from its middle region to its ends. The hull has an overall length from to five times its width and has an enclosed air passage al... | 08/30/1988 |
| 4622016 | Tunnel wedge A full or partial tunnel wedge is positioned in the propeller shaft tunnel ft of the propeller on a waterborne craft. The size and angle of the wedge is determined by the characteristics of the particular craft. The wedge converges water flow and increases... | 11/11/1986 |
| 4505684 | Thrust tube propulsion system A thrust tube propulsion system for cargo vessels is disclosed. The propulsion system is incorporated beneath typical cargo vessel hulls by placing in the hull power equipment and by placing below the hull a plurality of longitudinally extending thrust tu... | 03/19/1985 |
| 3970027 | Priming means for bow steering pumps In a bow steering unit for vessels including an axial flow pump having its suction and discharge nozzles intersecting with the hull of the vessel for selectively moving water in opposite directions to maneuver and steer the vessel in corresponding opposit... | 07/20/1976 |
