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Shallow water boatShallow water boat description/claimsThe Patent Description & Claims data below is from USPTO Patent Application 20090264031, Shallow water boat. Brief Patent Description - Full Patent Description - Patent Application Claims
1. Field of the Invention This invention relates generally to boats and, more specifically, to a boat for alternatively operating in shallow water or at high speeds in deep water. 2. Background of the Prior Art Various types of boats, ships or vessels have been used from the earliest recorded history of man. Different type boats have different functions. One boat may be designed for speed and another boat designed for hauling heavy loads. Likewise, boats may be designed for operation in shallow water versus deep water or in the ocean. Some boats are designed for maneuverability and others are designed for holding a straight line. Fishing, whether as sport or as a means of making a living, is very popular throughout the world. While fishing can be performed from the banks, the best fishing is normally performed from boats operated either near the shore or in shallow water of bays or marshes which would normally have fish. To operate in such an environment, the boat should be maneuverable, but have the minimum amount of draft. Typically, some type of flat bottom boat best meets these requirements. However, getting to and from the good fishing areas from a suitable dock or put in location normally requires traveling some distance over open water. The traveling over open waters requires a boat having different characteristics than a boat that operates well in shallow waters. For example, to get to bays and inlets along the coast, it may be necessary to travel over open waters of the ocean or at least extended distances over inland ship channels. If the boat is designed entirely for shallow waters the time and efficiencies for traveling to and from various fishing points can be long and expensive. It has been found that some type of hybrid between the shallow water boat and the deep water boat is necessary for most ideal conditions. One of the hybrid type boats that has been developed has been a tunnel-hull boat as shown in U.S. Pat. No. 6,125,781 by White. In White\'s tunnel-hull boat, a pointed bow is provided to cut through the waves when under way. A relatively flat bottom provides for a minimum draft to keep the motor from having to extend below the bottom of the boat when under way in shallow water. A tunnel is provided in the aft of the boat. The tunnel is straight and enlarging from the amidship to the aft of the boat. The tunnel draws water up to the propeller of the outboard motor when the boat is underway in shallow water as shown in White. Further, White shows aeration with apertures to provide air at the beginning of the tunnel to reduce friction. However, the design as shown in White still has problems. The motor operates at the same depth in both shallow or deep water. Water is drawn up the tunnel when the boat is underway whether in shallow or deep water. The air being introduced at the entrance of the tunnel simply is used to reduce friction, not to cause separation between the water and the tunnel. The straight and enlarging design of the tunnel also does not induce separation of the water from the tunnel when operating at high speeds in deep water. A boat built in accordance with White never gets total separation between the water and tunnel even when the boat is operating at high speeds in open water. It is an object of the present invention to provide a shallow water boat that will operate efficiently in deep water. It is another object of the present invention to provide a shallow water boat that is maneuverable in shallow water, yet handles well in deep and open water. It is yet another object of the present invention to provide a shallow water boat that has a partial tunnel to draw water into the tunnel when operating in shallow water, but not when operating in deep water. It is still another object of the present invention to provide a shallow water boat with a tunnel that starts at approximately the amidship location in the hull with an unplugable openings at the beginning of the tunnel to cause separation between the water and the tunnel when operating in water. It is a further object of the present invention to provide a tunnel in the hull of a flat bottom boat for use in shallow water, which tunnel starts at the amidship location and has a slight S shape top therein. At the beginning of the tunnel, a plenum connects through a series of holes to allow air to be drawn through venturi action into the beginning of the tunnel, which air causes a separation between water moving into the tunnel and the tunnel. The plenum may be connected (or disconnected) to a source of air. When the plenum is connected to a source of air, due to the venturi suction, air is drawn into the tunnel rather than water. This allows the boat to be operated more efficiently in open water, at which point the motor will be lowered down into the water below the bottom of the boat. However, when the plenum is not connected to a source of air, surface tension draws water moving across the bottom of the boat up into the tunnel. Because the tunnel is located in the center of the boat, the aft end of the boat and tunnel terminate in front of the propeller for the motor. The motor may be raised up above the bottom of the boat, but the propeller still strikes the water that is drawn through the tunnel. In this manner, the boat can operate and maneuver in very shallow water without the propeller or motor extending below the hull of the boat. It helps to have a proliferation of holes connecting through the hull of the boat from the plenum to the beginning of the tunnel so that a complete separation of the water from the tunnel is accomplished when operating in deep water. Also, having a slight S curve in the top of tunnel further insures the complete separation of water from the tunnel. This allows the motor and propeller to be lowered down into the water when operating in open water, but raise when operating in shallow water. Also, the tunnel is not a traditional V-shape, but has a flat upper surface with rounded corners. The flat upper surface has the slight S shape to (1.) insure complete separation of water from the tunnel when connected to a source of air, but (2.) stay attached in laminar flow fashion when not connected to a source of air. Continue reading about Shallow water boat... Full patent description for Shallow water boat Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Shallow water boat patent application. ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. Each week you receive an email with patent applications related to your keywords. Start now! - Receive info on patent apps like Shallow water boat or other areas of interest. ### Previous Patent Application: Method and kit for assembling marine propulsion systems Next Patent Application: Outboard motor Industry Class: Marine propulsion ### FreshPatents.com Support Thank you for viewing the Shallow water boat patent info. IP-related news and info Results in 2.12284 seconds Other interesting Feshpatents.com categories: Qualcomm , Schering-Plough , Schlumberger , Seagate , Siemens , Texas Instruments , paws |
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