Did You Know...
...that one person who claimed to be the inventor of the television is Russian emigre Vladimir Zworykin? In 1929 David Sarnoff, founder of RCA, asked Zworykin what it would take to develop TV for commercial use. He said: a year and a half and $100,000. In reality, it took 20 years and $50 million! Before his death in 1982 at the age of 92, Zworykin said of his invention: "The technique is wonderful. It is beyond my expectations. But the programs! I would never let my children even come close to this thing."
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| Number | Title | Issue Date |
| 4763596 | Semisubmerged water surface navigation ship A semisubmersible water surface navigation ship with even draft comprising at least two lower hulls, which can be submerged under water to reduce resistance and have a shape affording low friction resistance, and which are equipped with lifting and diving... | 08/16/1988 |
| 4738215 | Bumper construction for pontoon boats A bumper for protecting the tapered nose cones on the forward ends of the pontoons of a pontoon boat. Each bumper has opposite sides which converge at their forward ends and carry a padded nose piece which accepts impacts that would otherwise be applied t... | 04/19/1988 |
| 4715306 | Catamaran with a steerable centerboard apparatus and an improved deck joint A catamaran with a steerable centerboard apparatus includes a housing rotatably mounted on the deck of the catamaran. A centerboard is pivotally mounted to the housing to permit movement between an upper and lower position. A tiller, integral with the hou... | 12/29/1987 |
| 4702189 | Multiple-hulled marine craft In a multiple-hulled marine craft an opening (313) which can be closed in air-tight and water-tight manner by pivotable flaps (314) is located in the transverse deck (312) beneath the connection structure between the two floats (311) (FIG. 2).... | 10/27/1987 |
| 4668196 | Manually powered boat A manually powered boat for use as desired by one, two, three or more operators is disclosed. Balanced floatation is maintained regardless of the number of occupants/operators. The boat includes a buoyant hull, a centered, rotatable propulsion assembly en... | 05/26/1987 |
| 4660492 | Catamaran air cushion water vehicle A catamaran air cushion water vehicle has two spaced apart floats (111) which extend parallel to one another in the direction of travel, wherein the cross-sections of the floats become broader from the bottom to the top and wherein the floats are rigidly ... | 04/28/1987 |
| 4624209 | Portable multi-hull watercraft kit A readily portable kit for assembling a multiple-hulled watercraft, such as a catamaran, from two or more open-hulled boats such as canoes. The kit in one embodiment allows the assembly, using two standard canoes, of a stable catamaran having a large deck... | 11/25/1986 |
| 4615292 | Submersible twin-hull watercraft A submersible watercraft has two hulls constructed as submarines disposed generally parallel to and spaced apart from each other. A submersible pilot's cab is disposed generally above the two hulls approximately in a longitudinal symmetry plane defined be... | 10/07/1986 |
| 4580517 | Vessel having parallel hulls with 360 degree rotatable thrusters The location of azimuth thruster propellers at the parallel hulls of semisubmersible offshore vessels, is arranged so the water jet from a propeller at one hull, which is occasionally directed towards the adjacent hull will pass mainly below last-mentione... | 04/08/1986 |
| 4548148 | Glass bottom boat A catamaran boat is provided including a pair of laterally spaced apart longitudinally extending displacement-type hollow hulls. Generally horizontal connecting deck structure extends between the hulls and includes a large plan area transparent generally ... | 10/22/1985 |
| 4545315 | Remote control water fowl retrieving device A device for retrieving objects floating on the surface of a body of water by remote control thereof including a housing portion including a pair of forwardly extending spaced-apart pontoon members streamlined in shape and a housing member extending there... | 10/08/1985 |
| 4534738 | Tug type vessel This invention is a tug type vessel which can be operated in shallow as well as deep water, is relatively powerful compared to its overall length, and is versatile in that additional drive units can be added as required to form an integral propulsion syst... | 08/13/1985 |
| 4517911 | Flotation device A pontoon flotation device having forward and rearward ends and including at least two parallel pontoons fastened to a substantially rectangular deck panel. The deck panel has upturned side flanges extending the length of each side of the deck panel with ... | 05/21/1985 |
| 4494477 | Boat hull A boat hull having water engaging parallel hull portion separated by a bridge portion and an intermediate water-engaging hull portion disposed between adjacent parallel hull positions and underneath each bridge portion. An expandable and compressible plen... | 01/22/1985 |
| 4493658 | Paddle boat A paddle boat having a steerable rudder, a seat, a chain driven pedal actuated paddle assembly and storage areas above deck associated with the seat and wheel housings. The paddles can be either synchronized or unsynchronized so that both paddles are eith... | 01/15/1985 |
| 4474128 | Multi-hulled sailing vessel A sailing vessel having the performance capabilities of a multi-hull craft with the superior stability of a ballasted mono-hull craft, comprising a central hull supporting a mast and a pair of lateral hulls substantially parallel to the central hull and c... | 10/02/1984 |
| 4437424 | Partially restrained arrangement for the mast and sail of a craft possessing inherent stability A wind propelled boat of the sailboard type, in which a generally cone-shaped sail mounting member is secured on an upper part of the boat, on the centerline of the boat. A portion of the cone-shaped member is designed to receive the base of the mast of t... | 03/20/1984 |
| 4333191 | Combination motor home and house boat Disclosed herein is a combination motor home and houseboat in one mobile unit, said unit including a lower portion that is a partial motor home, and an invertable upper unit that is a complete houseboat. The float portion of the houseboat forms the entire... | 06/08/1982 |
| 4318700 | Paddle wheel operated watercraft A watercraft has two pontoons interconnected by framework which supports a propelling unit adjacent its bow end. The unit includes a paddle wheel between the two pontoons with exposed pedals to be engaged by the feet of a seated occupant. A rudder is atta... | 03/09/1982 |
| 4312287 | Apparatus for handling submersibles at sea A ship or other vessel having a moonpool therein and an enclosed space above the moonpool is provided with a pontoon which floats on the surface of the sea within the moonpool. The effects of the enclosed space is that said sea surface is calm even when t... | 01/26/1982 |
| 4304190 | Ferry boat A boat is disclosed which is particularly adapted for operation in rough seas. It includes a closed support hull, open support structure extending upwardly from the support hull, a deck mounted above the support hull and on the open support structure, a c... | 12/08/1981 |
| 4295236 | Pontoon boat A relatively small watercraft typically used by one or two persons includes a pair of spaced and usually parallel pontoons, each of which consists of an elongated body of closed-cell foamed plastic such as polystyrene. A load-distribution truss is provide... | 10/20/1981 |
| 4286537 | Seagoing separable tug and barge construction An integrated and separable tug and barge unit of the Catamaran type is provided which constitutes a material improvement in operational efficiency and economy over the separable tug and barge assembly forming the basis of U.S. Pat. No. 3,698,349 granted ... | 09/01/1981 |
| 4276851 | Underwater cruise device An underwater cruise device is disclosed which is mounted to a vessel by a vertical telescoping boom. The device includes a diving chair mounted to the vertical boom which can be selectively submerged during diving operations or completely withdrawn from ... | 07/07/1981 |
| 4271549 | Connection means for a knock-down boat A relatively small watercraft includes a pair of spaced and usually parallel pontoons. A personnel station extends generally between and above the two spaced pontoons. A structural frame of tubular members or bars supports the personnel station; the tubul... | 06/09/1981 |
| 4232625 | Column stabilized semisubmerged drilling vessel The vessel comprises a pair of laterally spaced elongated hulls having a pair of upstanding columns at opposite ends thereof supporting a working platform and a drilling mast in spaced relation above the hulls. The hulls buoyantly support the vessel in a ... | 11/11/1980 |
| 4109604 | Fresh water supply and waste water retention system A fresh water supply and waste water retention system is incorporated within a floating carrier for transporting land based recreational vehicles on a body of water. The system includes one or more fresh water containers and one or more waste water contai... | 08/29/1978 |
| 4048685 | Trailable houseboat A trailable houseboat is disclosed combining a travel trailer module and pontoons which are positioned along the roof of the trailer module cabin for land use. Such pontoons are supported by a power operated mechanism so that they can be moved from the hi... | 09/20/1977 |
| 4040134 | Pontoon boat This invention consists primarily of a catamaran type of boat, which includes a main frame upon which is a deck and two standard canoes for use as pontoons. The canoes are converted into pontoons by the addition of light weight cellular floatation materia... | 08/09/1977 |
| 4026228 | Method and apparatus for temporarily converting campers and the like to water-based units Method and apparatus for converting recreational vehicles (RVs), camper bodies and trailers from land-based units to water-based units. Following conversion, the RV or camper becomes the "cabin" of a houseboat having an undercarriage which includes a pair... | 05/31/1977 |
| 4024592 | Camper-pontoon boat construction A camper-boat construction having a camper body adapted for carriage on a pick-up truck bed, the underside of the body being commensurate dimensionally with the bed. The body has hinged at the edges of its underside elongated panels that have a fold-up or... | 05/24/1977 |
| 4020777 | Vessel and apparatus for at-sea retrieval of buoys and anchors An at-sea buoy and anchor retrieval apparatus utilizes a vessel having a catamaran hull with a buoy catcher apparatus disposed between the hulls of the vessel. The buoy catcher is vertically movable so that it can be placed at the appropriate water depth ... | 05/03/1977 |
| 3988994 | Catamaran A catamaran vessel has a central longitudinal axis and is provided with a pair of elongated hulls located at opposite sides of its axis and each provided with a bulbous forefoot which is inclined to the longitudinal axis of the vessel. A hydrofoil connect... | 11/02/1976 |
| 3986219 | Collapsible catamaran A collapsible catamaran can be easily disassembled into its component aluminum parts for storage and transportation. The collapsible catamaran consists of a pair of two sectional portions, wherein each section of each portion has an upward extending tubul... | 10/19/1976 |
| 3968532 | Knock down boat construction A boat is formed with a pair of separate, fore and aft extending deck halves to each of which is secured a pontoon; the deck halves being releasably secured together by a bridging front locking plate and a bridging rear locking-motor mounting plate, and h... | 07/13/1976 |
| 3967461 | Ramp for slidably supporting a pipeline to be laid on a submerged bed A catamaran, adapted for use in laying a submerged pipeline, is provided with a slidable support for the pipeline, including a slightly inclined ramp integral with the awning deck of the catamaran for carrying out the operations for building the pipeline,... | 07/06/1976 |
| 3954079 | Dual hull water bicycle A dual hull water bicycle for use over land and water comprising in combination a pair of passenger-carrying side boats operably connected to a centrally disposed bicycle type frame member which provides independent, disengagable dual propulsion through a... | 05/04/1976 |
| 3942457 | Water-borne craft having mix tank or the like movable between elevated and lowered positions A water-borne craft is supported by laterally spaced pontoons, wherein an open-topped receptacle mounted in the open space between the pontoons is movable between a fully elevated position wherein the bottom of the receptacle is at or above the water line... | 03/09/1976 |
