Did You Know...
...that the first rickshaw was invented in 1869 by an American Baptist minister, the Rev. E. Jonathan Scobie, to transport his invalid wife around the streets of Yokohama?
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| Number | Title | Issue Date |
| 7261611 | Aquatic surface skipping toy device The present invention relates to an aquatic toy device that is particularly adapted for skipping upon and across the irregular surface of a body of water. The aquatic surface skipping toy device may be used for recreation, sports, or exercise either by an individual... | 08/28/2007 |
| 6904863 | Self-retracting lockable step-assembly for boats A self-retracting step assembly is attached to a swimming platform provided on the rear of the hull of a boat. The self-retracting step assembly includes a ladder comprising a series of telescoping tubes which enable its extension and retraction. The step assembly i... | 06/14/2005 |
| 6182596 | System for minimizing the effects of shock and vibration in a high speed vessel A system for minimizing the effects of shock and vibration in a high speed vessel with an inner hull and an outer hull. It is a system of dampers, springs and stabilizer linkages in a high speed vessel that control the relative motion of an inner hull to ... | 02/06/2001 |
| 6176190 | Suspension system for a speed boat A watercraft allowing relative motion of its deck relative to its hull structure to increase passenger comfort. The deck is mounted to the hull structure in a manner which permits relative motion of the deck structure to the hull in at least two independe... | 01/23/2001 |
| 6158376 | Shock reduction in planing boats A system is disclosed to reduce the impact shock associated with operating a planing boat at high speeds. The system, called "LocalFlex," comprises an outer bottom placed under the inner bottom of the boat. The outer bottom is spaced a distance from the i... | 12/12/2000 |
| 6095076 | Hydrofoil boat A hydrofoil marine vehicle having separate forward and rearward hydrofoil wings connected by a center beam. The generally V-shaped hydrofoil wings are affixed to the center beam at either end by means of flexibly mounted struts. The center beam supports a... | 08/01/2000 |
| 5938490 | Outboard marine propulsion system An improved outboard propulsion system for a vessel in which an intake duct having an intake orifice positioned for receiving water. The intake duct includes a curved flow path directing walls curved continuously to provide a 180 degree turn for the water... | 08/17/1999 |
| 5887538 | Sailboard for a wind powered sailing apparatus The novel sailboard is arcuate about its longitudinal and transverse axes, and has blading fore and aft for supporting the sailboard upon a frozen surface. The front blading is carried on a pivotal plate which has spring loading and damping, and the rear ... | 03/30/1999 |
| 5673641 | Wind-propelled hydrofoil A wind-propelled hydrofoil comprising a forward assembly with at least partially submerged forward foils and a fully submerged aft foil. The forward foils (43, 44) are such that the resultant of the vertical forces drops when said assembly is translated v... | 10/07/1997 |
| 5647296 | Shock damper for a boat A shock damper for a boat includes an impact plate flexibly mounted to the bow of the boat and extending longitudinally along the central axis of the boat. The leading edge of the impact plate is located in front of the bow and above the surface of the wa... | 07/15/1997 |
| 5474011 | Shock absorbing apparatus for hydrofoil watercraft Watercraft including a hull (10), a plurality of foils (12) mounted on the hull for engaging a water surface, and shock absorbing means (16, 18) associated with the plurality of foils for coupling the plurality of foils to at least a portion of the hull a... | 12/12/1995 |
| 5329870 | Watercraft with vertically movable hydrofoils A watercraft employs three or more supercavitating hydrofoils. The elements that connect the hydrofoils to the hull may flex to thus raise or lower the hydrofoils relative to the hull. The relative motion between the hydrofoils and the hull is dampened by... | 07/19/1994 |
| 5285742 | Sail powered vehicle A wind powered vehicle including an operator platform having tilting and stationary sections coupled together via a plurality of hanger bearings and a longitudinal pivot axle. The platform section tilts with foot pressure applied at a stirrup to direct a ... | 02/15/1994 |
| 4763594 | Multihull ship with springs A multihull ship has springs which, after each movement of the ship at sea, help the combined forces of gravity and flotation re-establish her equilibrium. This makes it possible to combine different types of spring actions, so that the hulls will have th... | 08/16/1988 |
| 4716847 | Multiple-hulled marine vessel A multiple-hulled marine vessel resistant to forces tending to separate the hulls from the platform is provided. The connections between the hulls and the platform include elastic elements which are in a non-tensioned state when the hulls are touching the... | 01/05/1988 |
| 4087062 | Aircraft undercarriage including a safety device having a predetermined breaking load An undercarriage for an aircraft has a safety device which fails under a predetermined breaking load to separate a leg member of the undercarriage from a rigid element of the undercarriage, the rigid element remaining on the aircraft. The aircraft has on ... | 05/02/1978 |
| 4086012 | Rotational energy absorbing coupling A rotational energy absorbing coupling for shaft-to-shaft and shaft-to-crank applications such as a tiller arm for a steerable strut for hydrofoil ship using a plurality of shear pins spaced in a circular pattern. A first, inner disc is affixed to one sha... | 04/25/1978 |
| 4010705 | Rotational energy absorber apparatus for hydrofoil craft strut A set of plates, one rigidly mounted to the strut and the others to the craft structure. The plates are held together and are interconnected to one another by several sets of dowel pins which are sequenced to shear when an impact load at the foil rotates ... | 03/08/1977 |
