A flotation device that can include a multi-chamber flotation element having an active inflation chamber and a passive inflation chamber. The flotation device can have a first valve in fluid communication with the active inflation chamber but not the passive inflation chamber and an opening in fluid communication with the passive inflation chamber but not the active air chamber. The active inflation chamber can be configured to be inflated through the first valve. The active inflation chamber can be configured to expand the passive inflation chamber from a collapsed state to an expanded state as the active inflation chamber is expanded by, for example and without limitation, permitting ambient air to enter the passive inflation chamber when a pressure within the passive inflation chamber is less than an ambient air pressure.

A wheel assembly includes a wheel having an outer rim and a hub. A first coupling is applied to the hub. A non-return valve is housed in the first coupling, and a second fitting is applied separably between the hub and the outer rim to connect the outlet of the hub hole with the channel hole.

A pressure equalization valve assembly may include a valve body forming fluid chamber configured to receive pressurized fluid from a fluid pressure source, a first port configured for sealed communication with a first vehicle tire, and a second port configured for sealed communication with a second vehicle tire; a first one-way valve disposed in the valve body between the fluid chamber and the first port so as to allow one-way fluid communication from the fluid chamber to the first port when the first one-way valve opens; a second one-way valve disposed in the valve body between the fluid chamber and the second port so as to allow one-way fluid communication from the fluid chamber to the second port when the second one-way valve opens; and a two-way valve disposed in the valve body between the first port and the second port so as to allow two-way fluid communication between the first port and the second port when the two-way valve opens.

An electronic unit for measuring operating parameters of a vehicle wheel, including: an inflation valve of the snap-in type having a valve body made of an elastically deformable material, and a rigid hollow tube, an electronics casing, and a device for attaching the electronic casing and of the inflation valve. The device for attaching the electronics casing and the inflation valve consists of a solid pin made from a material having a density lower than that of the material of which the rigid hollow tube is made and having longitudinal grooves that allow a flow of air to pass through the valve, a proximal portion of the pin being configured to be attached to the electronics casing, and a distal portion of the pin being configured to be attached to the rigid hollow tube of the inflation valve.

An electro-pneumatic valve assembly includes a valve having a valve housing and a poppet and a solenoid valve having an actuator housing and a valve body. The valve housing has a wall that defines a valve inlet that is arranged to receive a fluid flow from a pressurized container and defines a valve outlet and a first port. The poppet is disposed within the valve housing and is movable between a first position and a second position. The actuator housing defines an opening. The valve body has a first wall that defines an inlet that is fluidly connected to the first port and a second wall that defines an outlet that is fluidly connected to the second port.

A pressure measuring device for a bicycle has a housing that includes a pressure chamber. The pressure chamber has a valve disposed in a first opening and a second opening into or out of a tire assembly volume of a tire assembly. A sense element is in pressure communication with the pressure chamber along a flow path between the first and second openings.

A check joint structure for a connection of an air nozzle of a tire and a connection hose of an air compressor, the air compressor contains: a box, a sealant supply can, and a connection hose. The box includes a body of the air compressor. The sealant supply can includes an open segment and a supply tube. The connection hose includes a first segment and a second segment. The second segment has a check connector which includes a fitting sleeve, and the fitting sleeve has a threaded orifice, a through orifice, and a projected shoulder. A cylindrical base includes a cylindrical room, a stepped coupling segment, a conduit, and a first stepped portion. A first spring is received into the cylindrical room to abut against the first stepped portion. A valve bolt includes a contacting element, at least one cutout, a head, a conical rib, and a neck.

An inflation control system includes a valve module and a controller. The valve module includes a first valve fluidly connected to a fluid source, a second valve fluidly connected to the first valve, and a pressure regulator fluidly connected to the second valve and an aspirator. The controller is in communication with the first valve.

An inflation system for tubeless bicycle tires may include a valve, a sealant canister, a pump head, and/or a valve core adapter. The valve, sealant canister, and pump head may collectively facilitate sealant injection into a tire by a user. The valve has an external valve seat, and includes a valve body, a valve stem extending through the length of the valve body, and a retaining mechanism for the valve stem disposed interior to the valve body. The valve stem is configured to move relative to the valve body, such that a resilient seating surface disposed at a proximal end of the valve stem is displaced relative to a valve seat formed by an exterior surface of a proximal end of the valve body.

A tire inflation viewing device that enables to view the proper operation of the inflation arrangements and that, in turn, enables to determine which of all of the tires is being inflated and has an air leak.