An inflation device includes a cylinder, a piston assembly, a cap, a base assembly, a flow channel assembly, and an inflation assembly. The cylinder includes two compartments. The piston assembly includes two pistons capable of synchronous sliding movement in relation to the two compartments. The cap is mounted on the cylinder. The base assembly is mounted at the bottom of the cylinder. The flow channel assembly includes a flow channel unidirectionally connected with a space formed between the base assembly, one compartment, and one piston. The inflation assembly includes a nozzle connected with the flow channel and attachable to an inflatable object.

An inflation device includes a cylinder, a piston assembly, a cap, a base assembly, a flow channel assembly, and an inflation assembly. The cylinder includes two compartments. The piston assembly includes two pistons capable of synchronous sliding movement in relation to the two compartments. The cap is mounted on the cylinder. The base assembly is mounted at the bottom of the cylinder. The flow channel assembly includes a flow channel unidirectionally connected with a space formed between the base assembly, one compartment, and one piston. The inflation assembly includes a nozzle connected with the flow channel and attachable to an inflatable object.

An air valve connecting device includes a housing, a sliding member slidably engaged in the housing and having a pathway selectively aligning with a passage of the housing, a gasket attached to the sliding member for engaging with an inflation valve, a follower slidably engaged in the sliding member for engaging with the inflation valve, and an actuating knob rotatably attached to the sliding member, the actuating knob is rotatable relative to the sliding member to an angular position where the follower is anchored to the sliding member, and the actuating knob is rotatable relative to the sliding member to another angular position where the follower is released from the sliding member.

A fluidic device is disclosed, comprising an enclosed passage that is adapted to convey a circulating fluid. The enclosed passage comprises a flow unit having a first electrode and a second electrode offset from the first electrode in a downstream direction of a flow of the circulating fluid. The first electrode is formed as a grid structure and arranged to allow the circulating fluid to flow through the first electrode. The fluidic device may be used for controlling or regulating the flow of the fluid circulating in the enclosed passage, and thereby act as a valve opening, reducing or even closing the passage.

A fluidic device is disclosed, comprising an enclosed passage that is adapted to convey a circulating fluid. The enclosed passage comprises a flow unit having a first electrode and a second electrode offset from the first electrode in a downstream direction of a flow of the circulating fluid. The first electrode is formed as a grid structure and arranged to allow the circulating fluid to flow through the first electrode. The fluidic device may be used for controlling or regulating the flow of the fluid circulating in the enclosed passage, and thereby act as a valve opening, reducing or even closing the passage.

An inflatable air mattress system comprises an inflatable air mattress defining an air chamber and including an inlet passageway, an inflation valve mounted to the inflatable air mattress, and a connector. The valve defines a passageway that includes a lip and a valve member. The valve member includes a seal movable between a closed position wherein the valve member is at least partially covering the lip. In an open position, inflation air can pass through the passageway and into the air chamber of the mattress. The inflatable air mattress system includes an inflating bladder including an interior portion defined by at least one wall of flexible fabric having a first end and a second end. The first end includes a wide opening securable by a closing spring, the second end includes an outlet adapted to connect to the connector.

An inflatable air mattress system comprises an inflatable air mattress defining an air chamber and including an inlet passageway, an inflation valve mounted to the inflatable air mattress, and a connector. The valve defines a passageway that includes a lip and a valve member. The valve member includes a seal movable between a closed position wherein the valve member is at least partially covering the lip. In an open position, inflation air can pass through the passageway and into the air chamber of the mattress. The inflatable air mattress system includes an inflating bladder including an interior portion defined by at least one wall of flexible fabric having a first end and a second end. The first end includes a wide opening securable by a closing spring, the second end includes an outlet adapted to connect to the connector.

An improved human-powered air pump allowing rapid low pressure and high pressure inflation has an expandable/collapsible first and second chamber featuring and airflow path via a one-way valve. Said first chamber features an air intake. Said one-way valve allows air to flow in a downstream direction. Said pump features an outlet configured to receive air from said second chamber and connectable to an inlet of an inflatable object to feed air thereto from said pump.

An improved human-powered air pump allowing rapid low pressure and high pressure inflation has an expandable/collapsible first and second chamber featuring and airflow path via a one-way valve. Said first chamber features an air intake. Said one-way valve allows air to flow in a downstream direction. Said pump features an outlet configured to receive air from said second chamber and connectable to an inlet of an inflatable object to feed air thereto from said pump.

A portable air pump includes an inflation assembly, a head seat pivotally connected to the inflation assembly, a pressure gauge disposed in the head seat, a connection assembly pivotally connected to the inflation assembly, and an axial member. The inflation assembly includes a cylinder and a piston rod moveable relative to the cylinder to compress the air inside the cylinder. One end of the head seat is provided with the containing groove, and another end of the head seat is provided with a pedal portion. The connection assembly is adapted to connect with an air-inflatable object. The axial member is mounted through the inflation assembly and the head seat and is connected to the connection assembly. The axial member is provided with an airflow channel communicating with the cylinder, the containing groove, and the connection assembly.