Did You Know...
...that while attempting to develop a super strong glue, 3M employee Spencer Silver accidentally developed a glue that was so weak it would barely hold two pieces of paper together? However, his colleague Art Fry needed the glue. Fry sang with his church choir and marked the pages of his hymnal with small scraps of paper that often fell out. He used Silver's glue to hold the papers in place. Today we call this invention Post-it Notes.
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| Number | Title | Issue Date |
| 7357091 | Rapid self-repairing and unsinkable watercraft A self-repairing and unsinkable watercraft has the hull of the mid section of the craft covered by two moveable water impermeable sheaths. The sheaths rotate in opposite directions to temporarily seal a breach and to allow for better ease of permanent repair or repl... | 04/15/2008 |
| 7352074 | System for producing hydrogen making use of a stream of water A system for producing hydrogen from water, making use of a stream of water such as a gulf stream or tidal stream, includes a number of submerged modules, each having a turbine that can be driven by the stream of water. The turbine is coupled to a generator for gene... | 04/01/2008 |
| 7334534 | Fishing kayak with a deployable fan tail A water vessel includes a hull having a maximum width. The hull defines a first portion and a second portion. Each of the first and second portions has an end at which a width of the hull converges relative to the maximum width of the hull. The second portion has a ... | 02/26/2008 |
| 7291936 | Submersible electrical power generating plant A self-supporting, submersible generating plant for producing electricity from ocean currents, consisting of two counter-rotating, rear-facing turbines with a plurality of rotor blades extending radially outward from two separate horizontal axis that convey the kine... | 11/06/2007 |
| 7278364 | Reconfigurable attack and reconnaissance vessel I A reconfigurable marine vessel is disclosed. The marine vessel includes an upper hull, two propulsion hulls, and two struts for coupling the propulsion hulls to the upper hull. The struts are segmented and are capable of reconfiguring the marine vessel. In one confi... | 10/09/2007 |
| 7234405 | Sea rescue craft An apparatus, method and system for rescuing persons and distressed vessels, up to about 50 tons displacement, in foul weather and for transporting loaded full sized truck/ship containers or other loads by water. Two pairs of long straight pontoons, each having five... | 06/26/2007 |
| 7225748 | Stealthy powered catamaran An articulated boat may include a pair of pontoons and a central cabin connected by pair of struts, each pair forming a parallelogram and one or more motors for changing the elevation between the central cabin and the pair of pontoons and for moving the boat through... | 06/05/2007 |
| 7219613 | Reconfigurable attack and reconnaissance vessel II A reconfigurable marine vessel is disclosed. The marine vessel includes an upper hull, two propulsion hulls, and two struts for coupling the propulsion hulls to the upper hull. The struts are segmented and are capable of reconfiguring the marine vessel. The upper hu... | 05/22/2007 |
| 7171915 | Water-stable inflatable pontoon boat transportable by trailer A boat having inflatable pontoons connected therewith by rotatable support assemblies is described. The structure is capable of collapsing to a small size for transport on a trailer, but provides a wide base for stable operation when deployed on water. A foldable de... | 02/06/2007 |
| 7124702 | Fishing kayak with a deployable fan-tail A water vessel has a hull having a maximum width and defines a first portion and a second portion. Each of the first and second portions has an end at which a width of the hull converges relative to the maximum width of the hull. The second portion has a first membe... | 10/24/2006 |
| 7047896 | Multi-hulled vessel A cargo carrying nautical vessel (1) is provided, having a plurality of cargo carrying hulls (2a, 2b) connected by at least two connecting structures (3, 4), each connecting structure including legs (5a, 5 | 05/23/2006 |
| 6990915 | Stabilized watercraft such as a trimaran A trimaran having a hull and outrigger pontoons on each side of the hull. The pontoon are laterally movable away and towards the hull. Each of the pontoons are secured to the hull by forward and aft link boxes. The link boxes are pivotally mounted to the port side a... | 01/31/2006 |
| 6988456 | Personal watercraft A personal watercraft including a hull and at least two pontoons repositionably attached to the hull with at least one pontoon attached proximate the starboard side and at least one pontoon attached proximate the port side. The pontoons are laterally and longitudina... | 01/24/2006 |
| 6959659 | Articulated sailing watercraft In a sailing catamaran provided with a forwardly directed pivoted arm carrying at the free end a third pontoon into alignment in front of either of the catamaran hulls a triangular truss assembly is provided bridging across the hulls. The apex of the truss assembly ... | 11/01/2005 |
| 6923131 | Windsurfing catamaran with dynamic shock dampened rig centering keel and hull support A windsurfing catamaran with a self-stabilizing wing. The wing is moved to the correct position by counter balancing water pressure from a rotating central keel connected to a central mast. The keel rotates in the opposite direction of the wing when the wing is move... | 08/02/2005 |
| 6840825 | Amphibious recreational vehicle An amphibious recreational vehicle (motorhome, trailer, SUV, and the like) of conventional RV height, width, and length restricted dimensions necessary to travel on highways and roads, and which upon entering the water, the bottom of the vehicle expands outwardly an... | 01/11/2005 |
| 6089173 | Multi-hull watercraft with self-righting capabilities A multi-hull watercraft, such as a catamaran or trimaran is constructed to facilitate the righting thereof following a capsize. By providing a pivot connection between the hulls and the cross-members, in accordance with one method, it is possible to right... | 07/18/2000 |
| 6073568 | Boat with outriggers A boat has a main hull and a pair of outriggers which extend to distal, capsizing-resistance formations. The capsizing-resistance formations are shaped and arranged such that in contact with the water under forward velocity it provides a generally upward ... | 06/13/2000 |
| 6029598 | Trailerable houseboat/camper with removable pontoons A combination houseboat/camper that is trailerable, and that has pontoons that are both easily removable and/or capable of being stored during travel on top. A removable motor and cable, in combination with the removable rotational pin about which the pon... | 02/29/2000 |
| 5707261 | Hydrocopter The present invention relates to a hydrocopter. A hydrocopter is a vehicle by which it is possible to move over water, particularly in an archipelago, under difficult conditions, e.g., during the thaw. The waterproof hull of the hydrocopter bears against ... | 01/13/1998 |
| 5590616 | Surf-boat A surf-boat for travelling or standing on choppy waters, such as may be encountered in gulfs, bays, surfs and beach fronts is provided, typically having three pontoons, three columns and two concentrically aligned decks; an upper deck and a lower deck, wh... | 01/07/1997 |
| 5582126 | Modular watercraft system A modular watercraft system includes large and small hulls, and a variety of connectors for enabling the manual assembly of any one of several multi-hull watercraft, for example an outrigger, a catamaran, or a trimaran. The modular components are all desi... | 12/10/1996 |
| 5529009 | Displacement and multihull ship with limited transverse rectifying torque and with reduced resistance to forward motion A ship having main hull 2 and at least one side hull provided to correspond to the inequality ##EQU1## in which n is the number of hulls, Si the surface area of the cross section of the side hull at the floatation, di the side d... | 06/25/1996 |
| 5277142 | Variable-beam catamaran An improved twin hull vessel of the catamaran type, having a central bridgedeck and a pair of side hulls interconnected by lateral suspension arms. The suspension arms are pivotally connected with offset spaced connections to the bridgedeck and to each of... | 01/11/1994 |
| 5265550 | Water vessel A Water borne vessel is supported by a pair of laterally extendible pontoons, which pontoons are extended as a function of both speed and water conditions. A combination of extensible hydraulic cylinder units and threaded shafts selectively provide contro... | 11/30/1993 |
| 5243924 | Amphibious multihull boat A boat including a main hull, a first pontoon hingedly connected to the main hull, and a second pontoon hingedly connected to the main hull on an opposite side of the main hull from the first pontoon. The first and second pontoons have wheels extending ou... | 09/14/1993 |
| 5235925 | Retractable connecting beam for trimarans A retractable connecting beam for a trimaran that allows the stabilizing floats to be retracted in against the center hull for trailering or marina docking. The outer end of the connecting beam is pivotally secured to the top surface of the stabilizing fl... | 08/17/1993 |
| 5228404 | Catamaran suspension system A catamaran suspension system is mounted between the deck (16) and hulls (11) of a catamaran (10). The suspension system has a pair of tracks (31), (32) mounted to the deck on which carriages (33) having a shock absorber (38) are movably mounted. A pivota... | 07/20/1993 |
| 5038697 | Variable beam float connection assemblies for trimarans An improved version of the Float Connection Assemblies as described in U.S. Pat. No. 3,937,166, for the retraction of a trimaran's stabilizing floats to be alongside the trimaran center hull for trailering or Marina docking. The improvement consists of a ... | 08/13/1991 |
| 5031557 | Float connection assembly construction method for trimarans A molded or pre-fabricated Central Core Unit module, containing the aligned attachment points, surfaces, or brackets necessary for incorporating the Float Connection Assemblies for the retraction of a trimaran's stabilizing floats, to be along side the ce... | 07/16/1991 |
| 4878447 | Multihull vessels A multi-hull vessel has a center section and a plurality of float arm assemblies disposed on opposite sides of the center section. The float arm assemblies are pivoted so as to be movable upwardly or downwardly. Each float arm assembly comprises upper and... | 11/07/1989 |
| 4842560 | Wave powered propulsion system for watercraft A watercraft is provided with a propulsion system having a hydraulic power plant driving a propeller through a transmission. The power to operate hydraulic pumps in the power plant is derived from wave motion by buoyant members connected to the power plan... | 06/27/1989 |
| 4718368 | Submersible water craft A partially submersible water craft comprising a main hull and a pair of secondary hulls mounted one to each side of the main hull, an arm pivotally mounted at one end to each of the main hull and pivotally mounted at the other end to the secondary hull, ... | 01/12/1988 |
| 4457248 | Multihull vessels A multihull vessel has a center section; a pair of floats displaceable from normal operative positions laterally extended on either side of the center section upwardly to positions above the center section and inwardly toward the center axis of the vessel... | 07/03/1984 |
| 4441445 | Self-righting multihull boat The trimaran has a lateral hull which is fixed at the end of a beam rotatably mounted on a longitudinal axis, which itself is supported by an outrigger protruding from the central hull. A jack allows the lateral hull to rotate around the axis (arrow). Ope... | 04/10/1984 |
| 4354290 | Convertible house trailer A convertible house trailer comprises a cabin portion containing the living quarters, a road wheel assembly, by which the cabin is supported on land, and having a movable linkage connecting the road wheels to the cabin. The road wheels may be retracted up... | 10/19/1982 |
| 4294184 | Multi-hull steering system A multi-hull craft steering system having a plurality of hulls made from flexible envelopes inflated to maintain buoyancy. One of the hulls is located between the remaining hulls and is pivotally mounted for controlling the angular variation in azimuth. T... | 10/13/1981 |
| 3996874 | Surface craft A trimaran has its floats displaceable from normal extended positions to retracted positions close to the central hull and is arranged to have improved stability at large angles of heel with the floats retracted. The retraction is actuable responsively to... | 12/14/1976 |
| 3937166 | Float connection assemblies for multi-hulled boats A multi-hulled boat includes a main float and a retractable float normally arranged, when in their operative positions, in spaced apart side-by-side relationship. A float connection assembly is provided, including a pivot structure interconnecting the mai... | 02/10/1976 |
