A case for an electronic cigarette vaporiser, the case including an automatic lifting mechanism that lifts the vaporiser up a few mm from the case to enable a user to easily grasp the vaporiser and withdraw it from the case. The lifting mechanism can be spring- based. The case both re-fills the vaporiser with liquid and also re-charges a battery in the vaporiser.

Surface debriding systems and instruments are provided that efficiently and effectively dislodge and remove debris, coatings, microorganisms and fluids from the dorsum of the tongue or other surfaces. The instrument has a debriding surface with cleaning elements and a number of spaced apart openings to a hollow interior that is configured to couple with a vacuum source. The shape of the openings may be configured to amplify suction force from the vacuum source. The system also has a vacuum source and a collecting vessel with backflow valves to store removed material and to stop movement of material into the vacuum source or back out to the instrument. The system can be self-contained or the instrument may be coupled to a dental high-volume evacuator (HVE) vacuum source.

An improved gas vent having a body defining a float chamber. A float is positioned within the float chamber. The float chamber defines a passageway for gas to flow from an first port to an outflow port. A float is positioned within the float chamber. The float is configured to move toward a closed position as the fluid level within the float chamber increases. As the fluid level increases the float raises and seals against an interior of the gas vent, preventing further fluid flow through the vent. A shield is positioned between the float and the first port. The shield is configured to deflect gas flow around the shield and float to prevent the float from raising prematurely in response to high velocity gas flow on the float.

The present invention relates to an oil tank ventilation device for a hydraulic brake unit of a tramcar, comprising a vent plug, a sealing ring, a gas guide hole and a gas guide pipe; the gas guide hole is a through-hole structure arranged at an upper end inside an integrated valve block; the communications of electrical element protection case, integrated valve block and the oil tank are realized by the gas guide pipe stretched into an air chamber of the oil tank and by the vent plug configured in the electrical element protection case. When the surface of the oil tank is covered with ice or snow, the rain or snow can be effectively prevent from falling on the vent plug body and the driving safety of the train is ensured.

Apparatus are provided for an access system for a passage defined in a component. The passage is surrounded by a flange, and the access system comprises a plug adapted to be coupled to the flange of the component to seal the passage. The plug includes a sidewall and an overhang coupled to the sidewall. The overhang is configured to substantially surround at least a portion of the flange and the plug is movable between a first, unsealed position and a second, sealed position upon the application of a force.

Apparatus are provided for an access system for a passage defined in a component. The passage is surrounded by a flange, and the access system comprises a plug adapted to be coupled to the flange of the component to seal the passage. The plug includes a sidewall and an overhang coupled to the sidewall. The overhang is configured to substantially surround at least a portion of the flange and the plug is movable between a first, unsealed position and a second, sealed position upon the application of a force.

A water pump has a check valve with a valve body movable in a direction of a valve axis of the check valve between an open position of the check valve and a closed position of the check valve. An actuating device is connected with the check valve and has an operating element that is movable coaxially to the valve axis. The operating element is operatively connected to the valve body and arranged such that the operating element, by applying a coaxial force to the valve body, transfers the valve body into a venting position of the check valve.

An actuator includes a housing with a linear motor slider. A portion of the linear motor slider is positioned in the housing. A transfer plate is disposed on an end of the linear motor slider. A transfer plate chamber is positioned within the housing and is divided by the transfer plate into aft and forward chambers. An aft vent is disposed in the aft chamber and includes a first membrane positioned over the aft vent. A forward vent is disposed in the aft chamber and includes a second membrane positioned over the forward vent. The first and second membranes include at least one of a hydrophobic or oleophobic material.

An actuator includes a housing with a linear motor slider. A portion of the linear motor slider is positioned in the housing. A transfer plate is disposed on an end of the linear motor slider. A transfer plate chamber is positioned within the housing and is divided by the transfer plate into aft and forward chambers. An aft vent is disposed in the aft chamber and includes a first membrane positioned over the aft vent. A forward vent is disposed in the aft chamber and includes a second membrane positioned over the forward vent. The first and second membranes include at least one of a hydrophobic or oleophobic material.

A pressure-equalization element for equalization of pressure differences between at least two spatial areas assigned to a field device used in automation technology, comprising a main body, consisting of a securing element having an axial bore, that is used for securing the pressure-equalization element in a wall of the field device, and a disc-shaped carrier component having a lateral end surface. The disc-shaped carrier component is provided with a specified number (n, where n>2) of substantially radially-running recesses corresponding to the axial bore, wherein the radially-running recesses are offset from one another by a defined angular offset, and wherein the radially-running recesses are provided with a gas-permeable, liquid-barrier membrane in the region of the lateral end surface of the disc-shaped carrier components.