Abstract: An electrical pump adapted for use with a piston rod in an air nozzle has an electromagnetic valve board with an electromagnetic valve thereon. A Z-shaped push rod is provided to be adapted to be driven by the electromagnetic valve so as to drive the piston rod to move accordingly. The movement of the Z-shaped push rod allows air from the electrical pump to be pumped into an object to be inflated/deflated when the motor is running depending on whether the inlet or the outlet is in alignment with the nozzle assembly of the nozzle assembly.

Abstract: A bidirectional air pump to selectively inflate or deflate an inflatable object has a housing, a pump assembly and a motor. The housing has a controller cover, a pump cover, and a motor cover. The pump assembly is mounted inside the housing and has a centrifugal pump, a binary supply/discharge valve assembly, a selectable check valve assembly and a valve controller. The motor is mounted inside the housing. The valve assembly and the motor cooperate to pump air into or draw air out of an air mattress or inflatable sofa.

Abstract: An air pump has a casing, a motor assembly, a fan assembly, a faceplate and a sliding valve assembly. The motor assembly is mounted in the casing and has a motor. The fan assembly has a fan housing, an inlet manifold, an inlet plate and a centrifugal impeller. The centrifugal impeller is mounted rotatably in the fan housing and connects to the motor. The sliding valve assembly is hollow, is mounted slidably between the faceplate and the motor assembly and has a rear, a partition and an air passage. The partition extends into the sliding valve assembly. The air passage is formed between the partition and the rear. The air pump inflates when the air passage aligns with in the inlet manifold. The air pump deflates when the air passage aligns with the fan housing.

Abstract: A control valve includes a horn-like body and a seat with an interior surface mounted on the rear. A secondary outlet, primary outlet and inlet are defined through the seat. Two hollow poles are formed at the interior surface of the seat and two first resilient members are mounted respectively in the hollow poles. A cover is mounted in the body and has two rods mounted in the hollow poles and abutting the first resilient members. Two shafts are formed in the cover and aligned respectively with the secondary outlet and primary outlet. Two valve disks are formed respectively at distal ends of the shafts and respectively align with the outlets. Two buttons are mounted on an outer surface of the cover, and each has a barb to selectively engage a recess defined in the horn-like body.

Abstract: A bidirectional air pump assembly includes a pump mounting case, a valve and an air pump. The pump mounting case is mounted in an inflatable object and has a valve mounting hole. The valve is held in the valve mounting hole and includes an adapter with a valve port and a valve disk. The valve disk is attached to the adapter and has a disk body and at least one disk stop protruding from the disk body. The air pump is detachably mounted in the pump mounting case and connects to the valve port. Therefore, the air pump draws air out of the inflatable body through the valve port and a gap caused by the at least one disk stop abutting the air pump, which keeps the disk body from completely closing the valve port.

Abstract: An air valve for an inflatable device, which includes a valve block having two downward locating plates, a valve cap detachably closed on the valve block, and a valve flap fastened to an inside annular flange inside the valve block and turned to close/open the air passage through the valve block, wherein the valve flap has a finger rod raised from a free flap portion thereof for the holding of the hand to turn the free flap portion of the valve flap downwards from a close position to an open position, enabling the free flap portion to be forced through the gap between the locating plates and then stopped at the locating plates in the open position.

Abstract: An air valve includes a valve body having an air passage and a transverse bar suspended in the air passage, a valve flap coupled to said transverse bar at a bottom side to close said air passage, and a movable plate coupled to locating blocks at said transverse bar at a top side and moved vertically between a first position where the movable plate is released from the valve flap and the air passage is closed by the valve flap, and a second position where the valve flap is deformed by the movable plate to open the air passage for letting air pass.

Abstract: A hand pump includes a cylindrical casing having a top open side covered with a top cover and a bottom side provided with an air outlet, a handle inserted through a hole the top cover, and a piston moved with the handle up and down to pump air out of the cylindrical casing through the air outlet, wherein the handle has multiple peripheral sides and angles defining a plurality of longitudinal grooves equiangularly spaced around the periphery for guiding outside air into the cylindrical casing evenly upon an up stroke of the handle, and a wedge-like coupling rod at a bottom end thereof press-fitted into a coupling hole at the piston for enabling the piston to be reciprocated with the handle.

Abstract: A hand pump including a cylindrical pump body having an embossed outside surface for the holding of the hand, a cap fastened to the pump body at the top through a screw joint and having a unitary hanger for hanging things, a piston rod inserted through a hole on the cap and having a piston handle disposed outside the pump body and driven to reciprocate the piston rod in pumping air out of the pump body into the inflatable object to be inflated, the piston handle defining a storage chamber releasably sealed by a plug cap for keeping accessories.

Abstract: The improved structure for the external cap of a spout used in waterbeds has a cap body with a slot opening, and two flanges with punched holes extending from the edge of said external cap. The two supporting legs of a hand grip can feed through the punched holes of the flanges and move freely. The user can pull up the hand grip to rotate the external cap body in order to open or close said external cap. The horizontal portion of said hand grip has a T-shaped sectional surface which can be partially adapted into the slot; the bottom end portions of the supporting legs have inverted hooks on both sides to avoid the hand grip from disengaging with the external cap.