Abstract: A built-in water pumping device of a manual paddle for a boat contains: a shaft, a blade, and a water absorption head. The shaft includes an inner tube and an outer tube movably fitted with the inner tube so as to movably adjust a length of the shaft, thus pumping waters. An adjustable fitting sleeve is configured to lock or unlock the inner tube and the outer tube after adjusting the length of the shaft. The shaft includes a receiving chamber. A water absorption head is fixed on the outer tube and has a passing orifice. The blade includes at least one outlet communicating with the receiving chamber, such that the inner tube is actuated to absorb the waters into the receiving chamber from the passing orifice, and the inner tube is pulled back and forth so that the waters discharge out of the at least one outlet continuously.

Abstract: A built-in water pumping device of a manual paddle for a boat contains: a shaft, a blade, and a water absorption head. The shaft includes an inner tube and an outer tube movably fitted with the inner tube so as to movably adjust a length of the shaft, thus pumping waters. An adjustable fitting sleeve is configured to lock or unlock the inner tube and the outer tube after adjusting the length of the shaft. The shaft includes a receiving chamber. A water absorption head is fixed on the outer tube and has a passing orifice. The blade includes at least one outlet communicating with the receiving chamber, such that the inner tube is actuated to absorb the waters into the receiving chamber from the passing orifice, and the inner tube is pulled back and forth so that the waters discharge out of the at least one outlet continuously.

Abstract: A drain valve of an oil cup of an oil filter contains: a body and a fitting sleeve. The body includes a head portion, a post, a connection portion, an upper threaded portion, a lower threaded portion, and a foot portion. An air channel and a fluid channel are defined between the head portion and the connection portion, and the connection portion has multiple cutouts and a guide opening. The foot portion has a through orifice communicating with the guide opening. The fitting sleeve includes a peripheral fence, an internal screwing portion, and multiple positioning portions. A distance is defined between the connection portion and the fitting sleeve by ways of the positioning portion so that air and stems discharge out of the foot portion from the oil filter along the guide opening.

Abstract: A fixer is applied to position a marine light on a boat and to adjust an angle of the marine light, and the fixer contains: a base and a rotatable adjuster. The base is locked on the boat by using two first screw bolts, the marine light is disposed on a top of a positioning column, and the rotatable adjuster is arranged on a bottom thereof. The rotatable adjuster includes a clamp member arranged on a side thereof and includes a connection member having a square cross section and disposed on a bottom of the rotatable adjuster so as to connect the positioning column on the base. The base is in a protrusion shape and includes a groove defined on a middle section of a top of the base, and the groove has two slots respectively defined on two intermediate sections of two peripheral sides thereof.

Abstract: A fuel tank cap for two-way gas intake and exhaustion contains: a body including a first lid and a second lid. The first lid has a coupling orifice configured to connect with a pressure adjustment module, the pressure adjustment module has a rotatable knob and a limiting unit, and the first lid has a locking rib. A first spring is defined between the first lid and the second lid, and the second lid includes an accommodation groove and a connection portion. The accommodation groove accommodates a flexible adjustment valve and a second spring, and the flexible adjustment valve has a main part and a flexible stop unit which has a movement travel in which the flexible stop unit expends or retracts. The main part has at least one seal loop and a defining rib. The second spring abuts against the defining rib and the limiting unit.

Abstract: A shockproof battery box structure comprises a receiving box and at least two shockproof pads. A battery applying for boat or ship may be arranged in the receiving box and the bottom portion of the battery may correspond to the radial protruding portion and the two depression portions for cooperating with each other. The battery may abut against the pin portion of each shockproof pad to achieve the shockproof effect. Each shockproof pad made of rubber or plastic materials press-fits in corresponding holes tightly so as to achieve the shockproof effect and prevent water from permeating into the receiving box to resulting in battery leakage and damage.

Abstract: A collapsible oar collection device is used for collecting a first collapsible section and a second collapsible section of a collapsible oar. The first collapsible section and the second collapsible section are detachably connected with each other to form the collapsible oar. The collection device comprises a first collection member and a second connection member. Since the fourth buckling element is buckled the second rod of the collapsible section so as to moved up and down, the collection device of the present invention may be applied to the collapsible oar with various diameters and aligned with the bottom ends of the first collapsible section and the second collapsible section with different lengths for housing in. Besides, the suspending rod is used for providing the display card to be detachably suspended and displayed. Therefore, the collapsible oar may be suspended and convenient to display simultaneously.

Abstract: An oil drain connector includes a main body and a sleeve. When it is required to release pressure, a sleeve is turned to loosen an upper section of an outer threaded portion of the main body relative to a container. Because an air outlet is slightly higher than a liquid inlet in the vertical direction, the liquid inside the container is first contact with a liquid inlet to pass through a first channel and then to be drained through a liquid outlet. At this time, the air enters a second channel through an air inlet, and then enters the container for the liquid to be drained smoothly.

Abstract: A ventilation device for boat or recreational vehicle is disclosed. The proximity switch is corresponding to the second inner tube portion while in shut-down status. The tube member is partially pulled out through the holding portion so as to correspond to the first inner tube portion and the proximity switch is turned to correspond to the first detecting point to rotate the fan assembly in a first rotating direction and light up the first indicator light so as to ventilate air from outdoors to indoors while in intake status. The tube member is partially pulled out downwardly through the holding portion so that the proximity switch is corresponding to the first inner tube portion and turned to correspond to the second detecting point to rotate the fan assembly in a second rotating direction and light up the second indicator light so as to ventilate air from indoors to outdoors while in exhaust status.

Abstract: An adjustable belt buckle is convenient to assembly and makes a binding belt easy to be adjusted. It uses the axial section of the top wall of the main body to further press and limit the pressing member and enhance the engagement between the first teeth portion and the second teeth portion to prevent the second teeth portion from being damaged and increase its life time.

Abstract: An oil suction device is disclosed and comprises a container and a plurality of movable fasteners. An oil supply pump and a connection pipe can be directly accommodated in a first accommodation trough and a second accommodation trough of a container respectively to be taken along with the container anytime. And because the oil is flowed from the small diameter section to the large diameter section, the outlet pressure of the oil from the large diameter section may be larger and the dust may be not accumulated in the connection pipe easily. Through the movable fastener which is disposed on the container and can be detached to two pieces, the power cord of the oil supply pump is detachably fixed by the simplified structure and operation. It is convenient for use and storage. The oil suction device has a simplified structure and the operation of the oil suction device is convenient.

Abstract: The present invention relates to a bucket which includes a bucket body and a plurality of movable fasteners. A water supply pump and a water pipe can be directly accommodated in an accommodation trough of the bucket body to be taken along with the bucket body anytime. Through the movable fastener which is disposed on the bucket body and can be detached to two pieces, the power cord of the water supply pump is detachably fixed by the simple structure and operation. It is convenient for use and storage. The present invention has a simple structure and the operation is convenient.

Abstract: An oil drain connector includes a main body and a sleeve. When it is required to release pressure, a sleeve is turned to loosen an upper section of an outer threaded portion of the main body relative to a container. Because an air outlet is slightly higher than a liquid inlet in the vertical direction, the liquid inside the container is first contact with a liquid inlet to pass through a first channel and then to be drained through a liquid outlet. At this time, the air enters a second channel through an air inlet, and then enters the container for the liquid to be drained smoothly.

Abstract: A water-filtration detecting device of a water filter includes a connecting member disposed at the bottom of an accommodation casing of the water filter. The connecting member has first and second detecting terminals, first and second outer threaded portions, and a protruding ring. A waterproof wire connector has a connector and a wire. The connector has two wire terminals passing through the second outer threaded portion and electrically connected with the first and second detecting terminals, respectively. One end of the wire is electrically connected with the connector. A warning device is electrically connected to another end of the wire of the waterproof wire connector. When water in the accommodation casing is contact with both the first and second detecting terminals, the first and second detecting terminals are conducted to conduct the waterproof wire connector for the warning device to generate a warning signal.

Abstract: An all-around LED light allows fast assembly and disassembly, high luminance, convenient replacement, and use safety includes multiple concave panels each related to a parabolic mirror made in a proper curvature by compromising a relative location of a light emitting diode adapted; light streams from the LED are emitted upward and reflected to scatter horizontally; multiple units comprised of the LED and the concave panel being arranged in a circle to form a all-around light radiating light streams to its surroundings; a structure of the all-around LED light is comprised of two semi-products located by having two bolting pillars from a bolting holder to penetrate through two secondary bolting holes disposed on a reflective mask and clicked by multiple circular ribs respectively from a lampshade and a base in a mutual containment status; one semi-product is comprised of a locating disk with its bottom resting on a locating holder and an upper end of the bolting holder, both bolting pillars on the base penetrat