A nozzle adapter for an inflation valve contains a connection seat, at least one control element, at least one returning element, a seal cover, and a controlling means. The connection seat includes an imaginary axis line, an inlet, an outlet, an air stop ring, a conduit, an engagement position, a coupling, and a stopping means. A respective control element has a fixing shaft, an engaging portion, and a controlled portion. The at least one returning element is arranged on the at least one control element. The seal cover is fixed outside the coupling, and an airtight space is defined in the coupling. The controlling means mounted on a center of the connection seat opposite to the inlet and in the conduit of the airtight space to move with the controlled portion.

A valve-coupler system has a lever that extends under a length axis of the valve body to enable one-handed operation. The valve-coupler body has an opening that is configured over a valve stem and a seal actuator having a lever that can be rotated about a pivot with a single hand to create a seal around the valve stem. Additionally, a valve-coupler may have a gas inlet valve that can be activated by the same single hand to open the valve and allow gas to flow into the valve stem. The inlet valve may be configured in line with the lever whereby the inlet valve is opened when the lever is rotated about the pivot to contact the inlet valve. The inlet valve may be configured on the valve body for manipulation by a user's finger or thumb. The inlet valve may be on the top of the valve body.

Disclosed are methods, systems and devices for evacuation of fluid, for example, air or gas, from a container or enclosed area.

A fluid delivery device includes a tube coupled to an axial manipulator. The axial manipulator includes an elongate member arranged to move axially in a housing. The tube is in fluid communication with a fluid diverter which is arranged to move axially in the housing upon axial movement of the elongate member. Seals are provided to prevent fluid from leaking out of the housing. A fluid port is in fluid communication with the tube via the fluid diverter, such that fluid can flow in and out of the tube via the fluid port and the fluid diverter.

A mouthpiece includes: a mouthpiece main body portion including a tubular member to which an air supply device is connected on one end side and a tire valve is connected on the other end side; an annular protruding portion which is formed at a required position on the outer circumferential portion of the mouthpiece main body portion; a tire valve insertion hole provided in a tire-valve-side tip portion of the mouthpiece main body portion; an O-ring arranged on the air supply device side inside the tire valve insertion hole; and a back-up ring that presses the O-ring from the air supply device side of the O-ring; an actuation body having a substantially convex shape in which a cylindrical tip portion is reduced in diameter.

An air pump device includes an air generating mechanism, an air tube unit, an air cylinder, and a control mechanism. The air cylinder has an air-receiving space and an air channel being in fluid communication, and a valve unit. The control mechanism includes a manifold seat interconnecting a linking unit of the air generating mechanism and the air tube unit, and a control unit convertible between an air-storing position, where air advanced from the linking unit into the manifold seat is limited to flow into the air channel, and the valve unit is opened to allow entrance of the air into the air-receiving space, and an air-pumping position, where air advanced from the linking unit into the manifold seat is limited to flow into the air tube unit.

A pump head of an air pump includes a head including an outer body, a handle, and an end cap. The outer body includes a compartment extending therein. The handle is connected to a first end of the outer body. The end cap is connected to a second end of the outer body. A retaining device is received by the compartment and includes a seat actuated by the handle. An air seal ring is received by the compartment and is selectively compressed by the seat. The seat includes a cavity extending therein, at least one slot extending radially from the cavity and through the seat, and at least one retaining arm extending between two sides of the at least one slot and resiliently swingable. The air seal ring has an outer periphery section curved radially inwardly with respect to other periphery sections along a longitudinal length thereof.

A chuck for inflating a tire having a Presta valve includes a valve engagement device defining an aperture with a central axis and a diameter, the valve engagement device movable radially with respect to the central axis to increase and decrease the diameter of the aperture. A locking device can engage with the valve engagement device to lock the valve engagement device in a selected radial position with respect to the central axis of the aperture. The chuck can include a seal positioned within the valve engagement device, the entire seal moving radially with the valve engagement device.

An automatic inflator device includes a housing that houses various operational components of the automatic inflator device such as a power source that is electrically coupled to a pump. A coupling portion attached to the housing selectively secures the automatic inflator device to an inflatable object, such as an inflatable watercraft, where the automatic inflator device may remain secured even while the inflatable object remains fully operational, such as while the inflatable object is in use. The pump may be selectively energized to pump air into the inflatable object via a fluid conduit. For example, the pump may be energized or de-energized based on user input or automatically based on a measured pressure of the inflatable object. Optionally, the automatic inflator device may be incorporated into an inlet valve of the inflatable object as the inflatable object is originally manufactured.

A fluid delivery device includes a tube coupled to an axial manipulator. The axial manipulator includes an elongate member arranged to move axially in a housing. The tube is in fluid communication with a fluid diverter which is arranged to move axially in the housing upon axial movement of the elongate member. Seals are provided to prevent fluid from leaking out of the housing. A fluid port is in fluid communication with the tube via the fluid diverter, such that fluid can flow in and out of the tube via the fluid port and the fluid diverter.