A ventilation unit for a low temperature chamber with a tube-shaped base body, having a heating element, an inlet side end with an inlet opening and an outlet side end with an outlet opening, wherein the base body has a tapered form such that the inlet opening has a greater area than the outlet opening. The inlet opening can be located in a first front side plane and the outlet opening can be located in a second front side plane, wherein the first front side plane and the second front side plane are substantially parallel offset with respect to one another, and wherein at perpendicular projection of the first front side plane onto the second front side plane, the inlet opening and the outlet opening are disposed offset with respect to one another. The base body can have a mechanical valve configured to open under pressure induction.

A thin profile gas transporting device includes a gas collecting plate, a valve sheet, a discharge sheet, and a gas pump. The gas pump is disposed on the gas collecting plate. The gas collecting plate, the valve sheet, and the discharge sheet are stacked and assembled sequentially. Through simplifying the structures of the gas collecting plate and the discharge sheet, the thicknesses of the gas collecting plate and the discharge sheet can be reduced. Moreover, through the arrangement of several pressure relief holes, the pressure relieving operation can be performed rapidly and quietly.

A flexible pipe having one way fluidic flow valves containing a working fluid that generates one way fluid flow to power a generator. Preferably the pipe is buoyant or otherwise flexed by motion of any supporting or surrounding liquid, so that waves in the liquid flex the pipe. Preferably an added interior pumping arm is provided to increase the fluid flow from flexing.

A fluidic valve system comprises a housing, a shell mounted to the housing, a vent for allowing fluid to enter the housing in a high pressure zone, at least one Dielectric Elastomer Actuator (DEA) flap forming a seal with the shell, wherein applying a voltage to the DEA flap causes the DEA flap to open the seal with the shell so that fluid can exit through a low pressure zone created between the shell and the DEA flap, and a power supply for supplying the voltage to the DEA flap.

An air pressure relief valve providing relief against both gradual and sudden changes in pressure is disposed on an opening of an assembly of parts. The valve includes a plurality of blades, the blades are circumferentially distributed and abut each other. Each blade includes a nozzle end, the nozzle ends abut each other, and a part of the nozzle end on each blade allows deformation by internal air pressure to form an air hole, wherein air can enter or exit the functional assembly through the air hole. The thickness of the blade gradually decreases in direction from a thick base end to the thinner-section air nozzle end.

A sheet 200 for an array of vacuum apertures 152 in a substrate support unit 150 of a printer is provided. The sheet 200 comprises a plurality of valves 202 formed into the sheet 200. The sheet 200 is made from a resilient material. Each valve 202 comprises a valve head 204 for sealing a vacuum aperture 152 in the substrate support unit 150, and a valve lever arm 206 for permitting movement of the valve head 204 towards and away from the vacuum aperture 152 in order to open and close the valve 202.

A thin profile gas transporting device includes a gas collecting plate, a valve sheet, a discharge sheet, and a gas pump. The gas pump is disposed on the gas collecting plate. The gas collecting plate, the valve sheet, and the discharge sheet are stacked and assembled sequentially. Through simplifying the structures of the gas collecting plate and the discharge sheet, the thicknesses of the gas collecting plate and the discharge sheet can be reduced. Moreover, through the arrangement of several pressure relief holes, the pressure relieving operation can be performed rapidly and quietly.

A vibration damper valve assembly may include a valve main body, first and second main stage flow paths, first and second disc valve packs, and first and second main stage bypass flow paths. The first disc valve pack may include a first outer disc valve pack, a first flow path bypass disc, a first loading element, and a first covering element, with the first loading element being arranged on one side of the first covering element such that a loading force is formed on the first covering element. The second disc valve pack may include a second outer disc valve pack, a second flow path bypass disc, a second loading element, and a second covering element, with the second loading element being arranged on one side of the second covering element such that a loading force is formed on the second covering element.

A reed valve includes a first valve body portion that includes one or more inlet apertures fluidly coupled to a tapered second valve body portion that includes one or more outlet apertures. The reed valve includes at least one sealing surface disposed proximate the one or more outlet apertures and at least one petal continuously, reversibly, displaceable between an OPEN position permitting forward flow through the reed valve when a fluid pressure proximate the at least one inlet aperture exceeds a fluid pressure proximate the at least one outlet aperture and a CLOSED position preventing reverse flow through the reed valve when a fluid pressure proximate the at least one outlet aperture exceeds a fluid pressure proximate the at least one inlet aperture. The reed valve may be installed in an airbox assembly used with a turbocharged engine to reduce the occurrence of turbo-lag on acceleration.

A vibration damper valve assembly may include a valve main body, first and second main stage flow paths, first and second disc valve packs, and first and second main stage bypass flow paths. The first disc valve pack may include a first outer disc valve pack, a first flow path bypass disc, a first loading element, and a first covering element, with the first loading element being arranged on one side of the first covering element such that a loading force is formed on the first covering element. The second disc valve pack may include a second outer disc valve pack, a second flow path bypass disc, a second loading element, and a second covering element, with the second loading element being arranged on one side of the second covering element such that a loading force is formed on the second covering element.