958results about "Foldable/inflatable hulls" patented technology

A variable volume raft containing adjustable ratio and amounts of air and or water. The buoyancy and ballast of the raft are routinely adjusted to accommodate additional occupants and changing weather conditions. A manual pump can be the primary or back up source for initial inflation. The torque pump twisted by hand or amplified by a lever arm generates air pressure for maintenance and repairing deflating lacerations at sea. The pumps collector gathers and pressurizes rain water for drinking in one chamber while pressurizing sea water as a stabilizing ballast in another chamber. A double hull or full floor chamber allows huge variations in buoyancy or ballast as dictated by changing needs for stability versus mobility. A compressed liquid or two-part foam confers puncture resistance to a portion of the raft. A thrown self-righting manual air horn, worn water-activated air horns and water activated transmitted signals, mark the site for rescuers.

A configurable, adjustable inflatable device including one or more inflatable bladders and a shape-defining membrane that combines with the inflatable bladders such that an overall shape of the configurable inflatable device is at least partially controlled by the shape-defining membrane, and wherein the overall shape of the configurable inflatable device is substantially different from an inflated shape of inflatable bladders alone. The configurable adjustable inflatable device may include a covering layer that may partially or completely surround the inflatable bladders and may attach to the membrane or the inflatable bladders. The level of inflation of the inflatable bladders may also be controlled, further adding to the adjustability of the inflatable device.

A system of interchangeable components includes various front panels, rear panels, adaptors, and interfaces that can be variably and removably assembled to form various customized waterboards with various performance characteristics.

A modular marine vessel has a variable hull and a plurality of boat forming modules including a bow section module, a load section module having a bow end and an aft end, and a bulkhead forming module is detachably connected to each bow and aft end of the load section module. The bulkhead forming module that is connected at the bow end of the load section module is detachably connected to the bow section module. Each boat forming and bulkhead forming module includes a topside section and a hull bottom side section. The topside section of each boat forming module has a shell gunnel portion, and the hull bottom side section of each boat forming module has a pivotally mounted bottom shell hull portion. The gunnel and hull portions of the load and bow section modules are detachably connected end-to-end, and sealingly juxtaposed the detachably connected bulkhead forming module to prevent water from entering the boat when the boat engages water. The bottom shell hull portion is pivotally mounted across a keel tunnel using a pneumatic, hydraulic, mechanical, or electro-mechanical actuator to form a preselected hull shape as desired. Novel mechanisms for sealing module connections, for module attachment, for pivoting hull panels, for hull pivot drives, and energy conversion systems for the marine vessel of the invention are disclosed.

A watercraft includes a number of subassemblies, including an inflatable hull, a drive system, a battery, a seat assembly and a steering and thrust control. Each of the subassemblies of may be of one or more particular designs which are detailed herein. A watercraft in accordance with the teaching herein may use one or more of these designs and each such watercraft is within the scope of this disclosure.

An improved float tube arrangement for outdoor water-related activities, particularly hunting and fishing. The float can be deployed as a blind for partially concealing and camouflaging a user, who sits in the circular middle of the float upon an adjustable seat supported by suitable straps. When used as a blind a canopy and net are selectively deployed. The stable base is formed by a pair of coaxially stacked inner tubes that are tightly bound by a covering fabric. Mechanical integrity is enhanced by frame loops encircling the inner tubes, and an encircling belt that concentrically tensions the float within a depressed region formed at the juncture of the stacked inner tubes. A canopy mounted to the frame loops and an optional net can be deployed as desired.

An air inflatable watercraft, preferably having a bow and stern, and having a cockpit, a bottom area forming part of said cockpit having a through opening therein adapted to receive a human operated propulsion mechanism which can be operated from the cockpit to propel the watercraft.An air inflatable watercraft having an inflatable, airtight bow and stern, and having a bottom area between two side inflatable, airtight compartments which run essentially the length of the watercraft, upon inflation the two side compartments at least partially extend above the bottom to provide a cockpit therebetween, and the inflated bow and stern form a configuration which is adapted to be efficiently propelled, viz., adapted to cut through the water. This embodiment can be hand rowed or provided with a pedaled propulsion mechanism provided a through opening is built into the bottom.An air inflatable watercraft having a bow and stern and having a central airtight compartment and two side airtight compartments running essentially the length of the watercraft, upon inflation the central compartment forms the bottom, stern and bow, and the two side compartments at least partially extend above the bottom to provide a cockpit therebetween. The central compartment has a through opening adapted to receive a human operated propulsion mechanism.

A floating solar system having a peripheral buoyant pontoon within which is suspended an array of individual photovoltaic panels each equipped with a float. A stabilizing skirt drops down into the water underneath the pontoon and creates a more placid “moon pool” within the pontoon to reduce turbulence from wave action and therefore enhance the efficiency of the array of photovoltaic panels. A plurality of the floating solar systems may be aggregated to form an island of units. The individual panels or rows or columns thereof may be flat (horizontal) or tilted so that they can be oriented more normally with regard to the sun's rays.

A modular buoyant support apparatus is comprised of buoyant support modules of inflatable pontoons. The pontoons comprise inflatable tubular chambers, typically fabricated of polymer coated fabric sheet material. A buoyant support module comprises a rigid frame connected to an inflatable pontoon. A means is provided to interconnect buoyant support modules to form a modular buoyant support apparatus of varied support area and configuration. Means are provided to attach an appropriately configured dock surface to the modular buoyant support apparatus.

A marine vessel is defined by multiple modular floatation modules, each of which is defined by a float captured in a frame. Plural floatation modules may be interconnected in a variety of configurations to vary the size and shape of the vessel. A deck is supported on the floatation modules and superstructures may be supported on the deck. The vessel is operable in a first on water mode in which the beam of the vessel is a first width, and in a second on land mode in which the beam is a second width that is narrower than the first width and preferably within the width allowable for towing on roadways. Wheels may be incorporated on the vessel in either the first or second modes or the vessel may be loaded onto a trailer. In one embodiment the vessel has wheels attached to the hull (either permanently or removably) and a trailer hitch assembly is located at the stern of the vessel so the vessel is towed stern-first when towed on land.

A seamless, woven, flexible fluid containment vessel or vessels for transporting and containing a large volume of fluid, particularly fresh water, having beam stabilizers, beam separators, reinforcing, and the method of making the same.

An apparatus for folding a boat tower, including a hinge assembly and a releasable footer. The hinge assembly has two members that pivot about a pivot point. At least one spring loaded bolt, or locking pin, engages a corresponding opening in one member, thereby locking the two members in fixed relation. The releasable footer has a bolt that engages an opening, thereby locking a releasable member to the footer body.

The inflatable kayak includes an inflatable peripheral structure defining at least one buoyancy chamber having elongated side sections that come together at a fore section and a aft section to form a passenger compartment. An inflatable floor cushion supports a floor of the passenger compartment. The floor cushion includes a top wall, a bottom wall, and at least one side gusset. The surface area of the top wall is less than the surface area of the bottom wall. A plurality of elongated, I-beam baffles extends between the top wall and the bottom wall. Each I-beam baffle has a midpoint, between the fore section and aft section, and an end, wherein the height of at least one I-beams baffle measured from the junction of the top wall to the junction of the bottom wall is greater at the midpoint of the baffle than at the end of the baffle. In another embodiment, the inflatable kayak includes an inflatable floor cushion wherein the distance between at least two I-beam baffles along the top wall is less than the distance between at least two I-beam baffles along the bottom wall.

A float tube has a pair of separate side-by-side pontoons, each comprising a pontoon cover and an inflatable bladder. A generally U-shaped support, having a separate cover and bladder, is mounted on top of the pontoons. The support has a pair of arms which overlay portions of the pontoons and the cover of each arm is attached to one of the pontoon covers. The support also has a back support member which spans between the two arms. The back support member serves to interconnect the two pontoons and maintain the proper spacing between them, and be a back support for someone sitting in the float tube. A flexible seat extends between the two pontoons in front of the back support and a rigid separation element extends between the two pontoons in front of the seat to keep the pontoons parallel. A headrest, having a separate cover and bladder, is located above the back support member.

Disclosed is an inflatable stretcher. The stretcher is stored in a deflated state within a frangible outer covering. A lanyard is connected to the internal gas vessel via an “external to internal” mechanical link which does not violate the vacuum seal of the stretcher's outer covering. Pulling the lanyard activates the vessel to rapidly inflate the stretcher. This inflation causes an overpressure condition within the covering that results in a progressive tear and the eventual separation of the outer covering. The stretcher can thereafter be used to transport a patient.

The inflatable kayak includes an inflatable peripheral structure defining at least one buoyancy chamber having elongated side sections that come together at a fore section and a aft section to form a passenger compartment. An inflatable floor cushion supports a floor of the passenger compartment. The floor cushion includes a top wall, a bottom wall, and at least one side gusset. The surface area of the top wall is less than the surface area of the bottom wall. A plurality of elongated, I-beam baffles extends between the top wall and the bottom wall. Each I-beam baffle has a midpoint, between the fore section and aft section, and an end, wherein the height of at least one I-beams baffle measured from the junction of the top wall to the junction of the bottom wall is greater at the midpoint of the baffle than at the end of the baffle. In another embodiment, the inflatable kayak includes an inflatable floor cushion wherein the distance between at least two I-beam baffles along the top wall is less than the distance between at least two I-beam baffles along the bottom wall.

A non-self-propelled, floatable structure for supporting people, animals, machinery or other loads is disclosed, having a floatable body designed to float on water, and a retention skirt that protrudes downwardly from a peripheral edge of the floatable body. The retention skirt is designed to extend underwater, delimiting an internal space between the retention skirt, the floatable body, and the water. The retention skirt is airtight, preventing air passing through the skirt and towards said internal space. Thus, when a downward force is applied on an edge of the floatable body causing the opposite edge to start rising from the water, skirt airtightness beneath the rising edge creates a vacuum effect that stops the edge from rising and prevents the floating structure from swaying excessively and eventually turning over or capsizing. The retention skirt also limits or prevents lateral and transverse motion across the water surface.

A sectionalized surfboard, which can be dismantled into sections and rejoined for use. The sections are joined using two vertically installed bolts, which pass through two joining assemblies. Each bolt is inserted through a hole in a top metal plate and tightened in a threaded hole in a bottom metal plate molded in a plastic molding, which is glued to the board internal foam and to the top and bottom skins on one section. The bolt also passes through a tube molded in a second plastic molding, which is glued to the board internal foam and to the top and bottom skins of the other section. The two joining assemblies are installed near the sides of the board.

A round boat has a one-piece, open-topped hull having a substantially flat bottom and outwardly concave but substantially vertical sides surmounted by flared gunnels. The concave sides mate with the inner walls of a toroidal-shaped flotation device, such as an inflated bladder, or tube, which fills the concavity and supports the hull. The tube and the hull are substantially coplanar such that cargo and passengers are supported within the toroidal opening of the tube. The tube and hull may be provided with a covering, or sheath, to help protect the tube from unnecessary wear or damage, and to provide means for replaceable decoration or identification. At least one seat is mounted to and projects radially inward from the gunnels to center the weight of a passenger above the hull, thereby increasing stability of the boat with the added weight of each additional passenger. The seat may include a swivel for convenience of movement. Also mounted to the gunnels and projecting radially outward over the tube, motor mount means supports a lateral transom for mounting an outboard motor to serve as both propulsion and steering. A tray projecting inward from the motor mount means includes cavities for small articles such as fishing lures, drinks or navigation equipment. A battery compartment mounted on the hull floor provides propulsion energy. A two-person boat as described is light weight and can be lifted by one person and rolled on its side for loading and unloading. The tube may be deflated for storage.

A device comprises a spring and a sleeve. The spring is configured to form a closed loop. The spring is moveable between a coiled configuration when the spring is collapsed and an uncoiled configuration when the spring is expanded. The spring defines a circumference while in the uncoiled configuration. The spring is disposed within the sleeve. The sleeve includes an inflatable portion disposed about at least a portion of the circumference.

A collapsible watercraft is comprised of a single high-strength foldable panel to fold into the form of a kayak with integrally defined keel, hull, sides, and deck. Using a single sheet of high strength panel creased in a predetermined pattern to form living hinges, the panel may be folded and transformed from self-defined compact knocked down package, into a rigid three dimensional tubular manifold in a kayak form that is optimized for performance in the water. Other removable rigid structural members, primarily a cockpit rim, rib, and floorboards help maintain the shape and integrity of the shell.

A float tube or watercraft comprised of a generally U-shaped inflatable flotation chamber having two generally parallel and laterally disposed leg portions and a rearward portion. The leg portions are preferably formed integrally with the rearward portion. The invention further includes a seating device bridging the two leg portions of the flotation chamber. A stabilizing frame and system for connecting the stabilizing frame to the U-shaped flotation chamber provides support to the opposing legs of the flotation chamber and prevents them from pinching in on the occupant, and also preferably tensions a seat provided between the legs of the floatation chamber. For additional support and / or this preferred tensioning, a rigid and / or adjustable rod, or tube, extends between the opposing legs of the frame. The system for connecting the stabilizing frame comprises preferably a plurality of channel segments, which are fixedly secured to the leg and rearward portions of the flotation chamber. Alternatively, a continuous channel may be used.

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 longitudinally repositionable as between a storage position in which the pontoons are generally longitudinally aligned relative to the hull and have a minimized lateral distance between the pontoons, and a flotation position in which the pontoons are shifted aft relative to the longitudinally aligned storage position and have a maximized lateral distance between the pontoons.Also, a personal watercraft having one or both of (i) a pair of laterally spaced hitch attachments secured to the hull proximate the bow of the hull, and / or (ii) a pair of laterally spaced hitch attachments secured to the hull proximate the stern of the hull 20. This aspect of the personal watercraft permits the personal watercraft to be used with various accessories such as a towing attachment, a wheeled attachment, a transom, an interconnecting linkage and a supplemental decking attachment.

The present invention introduces a small boat (kayak or hybrid kayak-canoe) made in a plurality of nesting sections. It is covered with a waterproof fabric cover, incorporating a stabilizing and flexible keel sewn into it. The boat also has a releasably attachable and flexible coaming.

The invention is a portable collapsible boat comprising one or more rigid cockpit sections, constructed of a material such as fiberglass, attached to a bow section and a stem section, which are constructed of fabric material covering a skeleton of longitudinal stringers and ring frames, and are attached to the rigid cockpit section(s) by means of a belt, buckles, and / or flanges. The hybrid folding boat combines the best features of rigid boats, such as performance and durability, with the best features of existing folding boats, such as transportability, without suffering from the drawbacks of rigid boats (mainly the extensive storage space required) or folding boats (mainly weight). The hybrid folding boat is lighter, easier to transport, more rugged, safer, easier to assemble, and stiffer than previous folding boats, adapts easily to a sailing rig, and facilitates one or more passengers. Manufacture of the boat is simpler than that of conventional folding kayaks because it has fewer parts and less dependence on precision stitching of the fabric covering.

Expanded structures are formed by cutting a series of concentric rings or sections from a single block or sheet of solid material. The "rings" need not be circular, but may be any regular or irregular geometric or other shape as desired, so long as they are substantially concentric with one another. The cuts are made so that they angle outwardly from the upper to the lower surface of the block or sheet, and pass completely through the sheet or block. This provides a series of concentric sections, with each section having a lower, outer periphery which is at least slightly larger than the upper, inner periphery of the next larger adjacent section. This allows each section to be stacked atop a larger adjacent section, with the lower outer edge surface of each smaller section resting upon the upper inner edge surface of the larger section immediately therebelow. Alternatively, the tapered outer and inner walls or faces of adjacent sections may be wedged together, with an adjacent inner section protruding somewhat from the plane of its adjacent outer section. Such structures may be formed in virtually any practicable size, from utility sheds including door and window openings formed therein, to smaller household containers, works of art, etc. as desired. The structures may be made permanent by coating with a suitable material (e.g., glass fiber and resin, etc.) if so desired. Different colors of materials may also be assembled together, to produce structures having alternating bands of colors therein.

An inflatable floor for an inflatable boat acts as a keel using three inflatable floor layers. The uppermost first inflatable floor layer has a planar cross section. The second inflatable floor layer is located under the first inflatable floor layer. The third inflatable floor layer is located under the second inflatable floor layer. A plurality of threads are provided, in an X- or I-like configuration, inside air chambers of the three inflatable floor layers. The threads link the upper and lower walls of the air chamber of each respective inflatable floor layer to each other. The inflatable floor has increased buoyancy and stiffness, is easy to fold and transport and is easy and economical to repair or replace and thus is easily applicable to a large military or rescue inflatable boat.

A floatable workstation including an inflatable tube including a floor, partitions disposed internally within an air receiving cavity of the tube to form one or more inflatable chambers, each chamber including a valve for inflating the chambers. A plurality of handles are disposed on the corners of the inflatable tube or on a deck assembly. The deck assembly includes a plurality of deckboards assembled together to form a floorboard. The deckboards are either inserted within a recess above the floor of the tube or alternatively attached to the top of the tube. One or more deckboards may include a receptacle for removeably holding a bucket. A tether arrangement is attached to the floatable workstation for securely positioning the floatable workstation alongside a vessel allowing one or more persons to stand on the workstation to perform maintenance on the outer surfaces of a vessel. The tether arrangement includes tethers, a means for fastening the tethers to the handles, and suction mechanisms.

An extendable spar buoy sea-based communication system includes a spar buoy having a retracted configuration deployable from an underwater vessel and an extended configuration after deployment, and a communication subsystem mounted to the top of the spar buoy and supported thereby.