Did You Know...
...that Thomas Edison's patent application on his phonograph was approved by the Patent Office in just seven weeks? In contrast, it took Gordon Gould, the inventor of the laser, 30 years to obtain his patent -- finally awarded in 1988!
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| Number | Title | Issue Date |
| 7361071 | On-site-inflatable water skis with at least one cooperating on-site-inflatable paddle On-site-inflatable water skis with at least one cooperating on-site-inflatable paddle for use by a user in water. The combination includes water skis and at least one paddle. The water skis are on-site inflatable to facilitate transport and reduce required storage s... | 04/22/2008 |
| 7354326 | Personal watercraft A personal watercraft is disclosed comprising a pair of longitudinally connected pontoons suitable for supporting a user on the surface of a body of water. A slip-joint comprising a pair of concentric cylinders, one attached to each pontoon, provides desired lateral... | 04/08/2008 |
| 7121910 | Upright human floatation apparatus and propulsion mechanism therefor An apparatus for the purpose of floatation and transportation on water comprises a pair of buoyant wing-shaped floats and foot wells in the floats designed to be under the center of buoyancy of each float. Accessories may be attached to one or more floats. Additiona... | 10/17/2006 |
| 7080850 | Configurable snowshoe and ski device A device and method are disclosed for a configurable snowshoe and ski device. The device may include a base member having a bottom for traversing over snow, and a plurality of wings rotatably coupled to the member, the wings convertible between a skiing configuratio... | 07/25/2006 |
| 7048599 | Manually propelled watercraft and propulsion mechanism A manually propelled watercraft for transporting a user on water, comprising a buoyant body having a longitudinal axis and a top side and a bottom side disposed adjacent to the water, a track disposed on the body substantially parallel to the longitudinal axis, a ve... | 05/23/2006 |
| 6939187 | Personal water transport assembly A personal water transport assembly for allowing a user to walk and move easily upon water. The personal water transport assembly includes a floatation assembly including one or more elongate hollow floatation members having top, side, and bottom walls, and also hav... | 09/06/2005 |
| 6855024 | Skis to walk on water The present invention relates to skis that allows a human subject to walk by sliding of the legs back and forth in a motion similar to cross-country snow skis. In an embodiment, the present invention comprises: (a) two skis having a foot-support for the subject to s... | 02/15/2005 |
| 6764363 | Upright human floatation apparatus and propulsion mechanism therefor An apparatus for the purpose of floatation and transportation on water comprises a pair of buoyant wing-shaped floats and foot wells in the floats designed to be under the center of buoyancy of each float. The apparatus may further comprise a tether attached to each... | 07/20/2004 |
| 5593334 | Water walkers A water walker for walking or skiing over the water. Each walker consists of multiple inflatable tubes attached to one another and with an opening in the middle for inserting the foot. The foot rests on a foot plate supported by a tubular structural suppo... | 01/14/1997 |
| 5458514 | Surfboards with paddlers In a surfboard assembly, the combination comprises a longitudinally forwardly elongated structure including flotation means, and having opposite ends; and means carried by the structures to support one foot of a surfer or to be manually operated by the ot... | 10/17/1995 |
| 5429538 | Mechanism capable of making variation in radial angle The present invention relates to a mechanism capable of making variation in radial angle, in particular, to a mechanism wherein variations in the angle of rotation of a particular component would result in the variations in radial angle of another compone... | 07/04/1995 |
| 5421759 | Dynamically balanced bouyant skis A pair of buoyant skis are used by a person over a body of water for forward motion thereover by reciprocating motion of the skis in alternate fashion. Each ski is a mirror image of the other and includes an elongated, box-like hull, inwardly lined with b... | 06/06/1995 |
| 5277636 | Personal flotation device The present invention relates to personal flotation devices. The personal flotation devices are typically utilized in pairs with one or more poles for recreational or emergency rescue usage.... | 01/11/1994 |
| 5120249 | Combination catamaran boat and cross water ski system A combination catamaran boat and cross water ski system includes left and right hulls, a bridging deck, and a steering system. Each hull includes a rudder in its keel portion and a rudder plate on its top, connected by a rudder shaft for pivotal movement.... | 06/09/1992 |
| 5080621 | Water walking device A water walking device which has a pair of buoyant hulls (20), longer than they are wide, with a number of propulsion flaps (22) mounted on the bottom. The flaps are hinged and fold into the hull creating cup-like resistance chambers when hinged open to o... | 01/14/1992 |
| 4984648 | Motorized skiboard A motorized skiboard includes a skiboard having a central opening with a drive belt mounted in said central opening and driven by a motor and encased and held in a drive belt housing. First and second foot mounts rest on said housing on either side of sai... | 01/15/1991 |
| 4952184 | Cross-water ski A cross-water ski for walking on water having a buoyant member with flaps rotatably attached to its bottom surface and stoppers to prevent movement of the flaps when they reach a position perpendicular to the bottom surface of the buoyant member. The flap... | 08/28/1990 |
| 4915659 | Water ski also adapted for use on land A water ski also adapted for walking on land is disclosed. The ski comprises a pontoon of generally streamlined shape, formed of a lightweight rigid material, and a plurality of spaced cups of a flexible material attached to the lower surface of the ponto... | 04/10/1990 |
| 4846743 | Water skiing buoyant shoes The invention is to provide a kind of skiing shoes especially referring to a kind of water skiing buoyant shoes. The distinctive features are on a pair of skiing shoe base members buoyant on water surface, we can walk freely and it becomes an additional u... | 07/11/1989 |
| 4808134 | Water ski boot A water ski boot comprising an upper and a sole. The upper includes respective toe and heel portions and the sole extends forwardly on the toe portion to provide a platform like portion extending generally to match the width of the upper. At least one elo... | 02/28/1989 |
| 4731039 | Floats to be used pairwise to walk on water An elongate float to walk on water with another such float is provided with a foot holder. The foot holder is mounted in a transverse direction such that the buoyancy force on the inside edge of the float relative to the other float is greater than the bu... | 03/15/1988 |
| 4698039 | Apparatus for walking on water or land The subject apparatus comprises a pair of floats, each having propulsion apparatus attached to its bottom. There is a foot well in each float, extending from top to bottom and fitted with toe retaining and heel support elements. The propulsion apparatus c... | 10/06/1987 |
| 4681551 | Aquatic device This invention is an improved aquatic means wherein a standard, readily available tire inner tube is fitted with special bindings that gives a double end, boat-like configuration and allows the foot of the user thereof to be readily inserted into and rele... | 07/21/1987 |
| 4541809 | Water glider assembly A water glider assembly includes two water glider members and a separate elongated stabilizer cartridge which can be inserted between the glider members to connect them together and eliminate not only lateral and vertical separations, but also individual ... | 09/17/1985 |
| 4459118 | Water glider assembly A water glider assembly includes two water glider members and a separate elongated stabilizer cartridge which can be inserted between the glider members to connect them together and eliminate not only lateral and vertical separations, but also individual ... | 07/10/1984 |
| 4261069 | Water walker A water walker which is attachable to a user's foot and which, when used in pairs, i.e., one walker for each of a user's feet, allows the user to move across the surface of a body of water while standing upright, includes a buoyant flotation member, a pai... | 04/14/1981 |
| 4117562 | Water walker A water walker for enabling an individual to walk upon water including a pair of elongated buoyant water walker assemblies which can be attached to the feet of the user. Each assembly includes a buoyant flotation member which has a runner longitudinally e... | 10/03/1978 |
| 4034430 | Water-walking apparatus Apparatus for walking on water includes a pair of buoyant pontoons adapted to support a person afloat in water and balancing means for the person. The pontoons are pivotably interconnected by transverse stabilizers consisting essentially of a pair of elon... | 07/12/1977 |
| 3936897 | Buoyant water-walking apparatus Buoyant water-walking apparatus including a pair of elongated, buoyant, water-walker assemblies adapted for attachment to the feet of a user for the purpose of supporting the weight of the user and enabling him to propel himself over the water. Each of th... | 02/10/1976 |
