33results about "Propeller parts" patented technology

A dual drive system for providing motive power to a watercraft has a frame configured for connecting to the watercraft and a drive assembly connected to the frame. The drive assembly has a manual drive mechanism configured for receiving mechanical input from a user, a motor drive mechanism configured for receiving mechanical input from a motor, a driveshaft having a first end in selective engagement with one of the manual drive mechanism and the motor drive mechanism and a second end in engagement with a propeller, and a drive selector for selectively engaging the manual drive mechanism or the motor drive mechanism with the driveshaft based on a position of the drive selector between first and second positions. In the first position, the drive selector engages the manual drive mechanism with a driveshaft. In the second position, the drive selector engages the motor drive mechanism with the driveshaft.

A light display system and device for use in a body of water or other liquid is described. The light display device may be controlled remotely via a control hub and/or control panel, or controlled by internally preprogrammed commands. A plurality of light display devices may be controlled in selected, choreographed sequences to provide various unique visual displays including, for example, geometrical patterns and/or naturalistic patterns giving the impression of organic phenomena such as swarming fireflies, bioluminescent creatures and the like.

The invention relates to the field of aquatic rescuing, in particular to an aquatic rescuing device. The aquatic rescuing device comprises a main body, a propulsion device, a direction control device, a sensor, an attitude regulating device, an infrared camera, a wireless communication device, N wireless relay devices, a life saving device, a control system and a remote controller, wherein the attitude regulating device is used for accurately adjusting the attitude of the main body and assisting other devices to complete the accurate steering, the accurate lifting and the accurate hanging of the main body; the wireless relay devices are used for performing wireless relay when the distance is far or the communication environment is poor; the life saving device is used for fixing a rescuing target; the attitude regulating device comprises four attitude regulating electric motors and four attitude regulating propellers; the four attitude regulating electric motors are separately and uniformly mounted on two sides of the main body; and the wireless relay device can be released by the main body. The aquatic rescuing device disclosed by the invention can regulate the movement direction and the attitude accurately and perform hovering, many rescuing manners including cuddling, towing armpits, holding by hands and the like are provided, and the problems that the aquatic rescuing device is low in rescuing efficiency, narrow in application scope and poor in stability are solved.

A watercraft configured for use in a body of water is provided including a deck and at least one propulsion mechanism mounted at a first end of the deck. The at least one propulsion mechanism is configured to move the watercraft within the body of water. A man lift movable between a lowered position and a raised position is mounted to the deck. The man lift is configured to raise a person a vertical distance above the deck. Mounting brackets are arranged adjacent a first and second side of the deck. The mounting brackets are translatable between a retracted position and a deployed position. In the deployed position, the mounting brackets extend perpendicularly from the first side and the second side, respectively. An inflatable pontoon is removably coupled to each of the mounting brackets.

The subject of the invention is a watercraft equipped with wheels of special design, which is capable of running on the surface of water. The vessel makes a novel maritime vehicle for fast transportation of small groups of people and commercial merchandise over the surface of rivers, seas, and oceans. The thrust, and share of the lift, is generated by hydrodynamic reaction of water to roll-and-slide motion of the wheels; the rest of the lift, which is necessary to counterbalance the loaded weight of the cruising vehicle, is generated by hydrodynamic forces acting on four plates with adjustable angle of attack and mounted on hydraulic struts with adjustable length. The wheeled watercraft, running on the surface of water at cruising speed, can surpass significantly planing vessels and hydrofoils in speed and fuel efficiency, and lower engine power required to achieve high speeds. The invention has the potential for a number of military applications.

A propeller device for aircraft, spacecraft or watercraft comprising two or more blades and a spinner. The blades are arranged on a hub so that they can be in a deployed or a retracted position. The spinner comprises first, second and third movable portions configured for allowing deploying or retracting the blades and for keeping the blades deployed or retracted.

The present invention relates to a special travelling device for a water surface pollution floater cleaning robot. The special travelling device comprises a frame, a spiral propelling device, a steering device, a power supplementary device, a filter screen, inflators and fixing buckles. The spiral propelling device is positioned at the bottom of the middle of the frame, the spiral propelling device is simple and convenient to control, propelling force is large, and the propelling effect is good. The steering device is positioned at the rear side end of the frame, the steering effect of the steering device is achieved due to the fact that three steering pawls rotate in the same direction, and steering is fast and flexible. The power supplementary device is positioned right above the steering device, and when the weight of water surface pollution floaters born by the special travelling device is too large or movement power is insufficient, the effect of secondary supplementation of the movement forward power can be achieved by the power supplementary device. The filter screen is installed inside an upper layer of a semi-cylindrical housing structure of the frame, the inflators are symmetrically positioned at left and right sides of the frame respectively, and the inflators and the frame are connected through the fixing buckles.

The invention belongs to the technical field of engineering pontoons and particularly relates to an outboard motor hanging rack. According to the technical scheme, the height-adjustable outboard motor hanging rack comprises a hand pump, a platform, upper guide rails, lower guide rails, an oil cylinder driven by the hand pump, an upper roller assembly, a lower roller assembly and an oil cylinder mounting seat; when the water level gets lower, the hand pump is operated, a piston rod of the oil cylinder is enabled to jack up an outboard motor to ascend to appropriate height; when the water level gets higher, the hand pump is reversely operated, the piston rod of the oil cylinder is enabled to descend, the outboard motor downwards slides to appropriate height along the upper guide rails and the lower guide rails under the action of gravity, and a propeller is enabled to keep appropriate draft. The height-adjustable outboard motor hanging rack can be used for adjusting the draft of the propeller of the outboard motor conveniently, thereby adapting to the water depth of a river channel and also adapting to larger draft change in loading and unloading processes of the pontoons.

This disclosure is related with propeller noise and cavitation abatement in applications like propulsion, ventilation, pumping or turbine systems on fluids by novel techniques that allows stronger propellers with improved laminar flow by means of a propeller which consists on a rotating cylindrical block or a truncated substantially conical block with one or more tunnels around it rotational axis, said block also may have flow-guiding structures at both ends that help to keep the fluid's laminar flow when it is mixing fluids with its environment, having the rotating block tunnels with either substantially circular shaped cross-section or variable shape cross-section from substantially circular to irregular oval measured in perpendicular plane to the rotational axis whereby it smoothly accelerates fluid or gas by means of either centrifugal or axial movement, also including Dynamic Balance or Imbalance or Torque Modulation Means that modulate specific vibrations which generates sound waves.

A diffuser-type endplate propeller driving a hull and including a propeller hub a plurality of blades is provided. The propeller hub has an axis of rotation and is connected to a transmission shaft of the hull. The blade has a blade-body and an endplate. The blade-body is connected to the propeller hub and extends outward from the propeller hub to the corresponding endplate, the endplate bends from the corresponding blade-body to extend towards a stern of the hull, and the endplate has a leading edge and a trailing edge. A cylindrical surface is imaginarily formed by the leading edges while the diffuser-type endplate propeller is rotated about the axis. Each of the endplates has a first tangent plane at the leading edge thereof, the cylindrical surface has a second tangent plane at the leading edge. An included angle is measured from the second tangent plane to the first tangent plane.

The present watercraft comprises a hull, and a flotation structure. The hull has a length overall and a beam. The flotation structure protrudes under the hull. The flotation structure supports a plurality of buoyant toothed rollers. Each buoyant toothed roller is substantially parallel to a beam of the hull. Each buoyant toothed roller is also rotationally retained by the flotation structure.

The present disclosure generally relates to an apparatus for storing, treating, and making up of various drilling fluids onboard a dynamically positioned vessel, such as a barge, boat, or shop. In particular, the present disclosure relates to a liquid mud plant (LMP) supporting any offshore drilling rig or platform from a vessel in closer proximity to that rig. Additionally, the present disclosure relates to the process by which the liquid mud plant is in closer proximity to the drilling, which is derived from the dynamical positioning capability of the liquid mud plant vessel.

The invention discloses a fishing vessel with push-up propellers, comprising a deck, two hulls with the same structure, wheels, folding wheel carriers and electric push-up propellers, wherein the deck is paved at the tops of the two hulls; each hull comprises an outer side wall panel, an inner side wall panel and a bottom panel, and the outer side wall panel is of a V-shaped structure formed by butting an upper oblique panel and a lower oblique panel; each folding wheel carrier comprises a wheel bracket and a hydraulic cylinder, each wheel bracket is articulated to the lower end of the inner side wall panel of each hull, and each wheel is mounted on each wheel bracket; during folding, each hydraulic cylinder is pulled to each wheel bracket, passes through each bottom panel and enters a groove in the bottom of each hull; during unfolding, each hydraulic cylinder pushes each wheel bracket to be unfolded downwards; and each push-up propeller is arranged on each bottom panel. Because the push-up propellers are additionally arranged, when the wheels move on the ground, the friction force between the hulls and the ground can be relieved, so as to assist the wheels to move the hulls out of the water surface.

An embodiment of a device for marine surface propulsion of a watercraft is provided that facilitates high speed performance in combination with steering and/or trimming control. The propulsion device may include a support member supportably interconnectable to and pivotable about one or both of a reclined axis and upright axis relative to a watercraft transom. A propeller shaft may be supported by the support member for pivotable movement therewith, and may have a first end interconnectable to a watercraft engine output. A hub body and a plurality of propeller blades may be interconnected to a second end of the propeller shaft for co-rotation therewith, wherein the hub body and propeller blades are pivotable with the support member about the reclined and/or upright axes. A variable pitch actuator may be interconnected to the support member for pivotable co-movement therewith about the reclined and/or upright axis, wherein the variable pitch actuator is provided for adjustably controlling a pitch orientation of the propeller blades.

A propeller assembly includes a central hub including a first forward-facing end, a second aft-facing end, a hub body extending therebetween, and a plurality of channels spaced circumferentially around the central hub. The propeller assembly further includes blade wedges configured to be inserted into and to retain blades within the channels of the central hub. Each blade includes a blade dovetail including a dovetail face configured to engage a respective channel sidewall and/or a respective wedge sidewall. The dovetail face includes a bearing portion that engages the respective channel sidewall and/or the respective wedge sidewall and a clearance portion that is spaced from the respective channel sidewall and/or the respective wedge sidewall by a clearance gap during a first loading of the propeller assembly and that engages the respective channel sidewall or wedge sidewall during a second loading, the second loading greater than the first loading.

An apparatus and system for a marine propeller assembly are provided. An aft retention member that may be used with the marine propeller assembly includes a base, an opposing nose and a conic body extending therebetween along a centerline normal to the base. The aft retention member also includes at least one protuberance extending radially away from a surface of the conic body. The protuberance extends axially along a surface of the aft retention member from the base arcuately convergent to a predetermined point between the base and a tip of the nose.

A maintenance-free electric propeller structure of a submarine capable of realizing deep diving over 1000 meters and using oil for waterproof sealing is characterized in that at least a rotor (2) or the rotor (2) and a stator (1) are encircled by a narrow type metal sealing isolation shield (4) or a wide type metal sealing isolation shield (5) in a three-dimensional way, and a spindle (6) capableof downwards passing through a motor shaft seal (7) is arranged the bottom of the metal sealing isolation shield; the metal sealing isolation shield is filled with oil (S), for performing jacking thepermeation upwards to the inside through the motor shaft seal (7) by an external high-pressure water body; all splicing gaps of the metal sealing isolation shield are connected by a non-detachable welding process; and a motor is arranged in a vertical state. A submarine electric propeller comprising a propeller (11) is fitted to the tail end of the submarine main part as a cabin, and the connection between the submarine electric propeller and the submarine main part is detachable.