A flow indicator (F) for an inhaler (I) comprises a housing (1) defining a mouthpiece (M2), an inlet (2) for connection to the product-dispensing chamber of the inhaler, a chamber (3) positioned between the inlet and the mouthpiece of the indicator, and an indicator member (4) movably mounted in the chamber in such a manner that inhalation at the mouthpiece of the indicator causes the indicator member to move within the chamber. The indicator member (4) is so mounted as to co-operate with a swit...

Pressure is measured inside of a high pressure vehicle. A substance is compressed at a first pressure to create a preform having a first density. The preform is placed inside of a high pressure vessel and subjected to a second pressure, greater than the first pressure. The preform therefore changes in density to a second density, greater than the first density, whereby the second pressure can be determined. The method may also be used in determining the pressure inside of a food product during f...

A refill indicator includes an elongated member for removably positioning in a drink container. The elongated member has a first end and a second end. A first color indicia is positioned on an outer surface of the elongated member and generally extends from the first end to a middle of the elongated member. A second color indicia is positioned on an outer surface of the elongated member and generally extending from the second end to a middle of the elongated member. Wherein the first color indic...

The invention provides method for the evaluation of washing or cleaning techniques on a substrate comprising: i. applying a selective indicator system on the substrate to be evaluated; ii. washing the substrate with water and/or detergent containing composition; and ii. contacting the washed surface with an indicator complimentary developer, whereby inadequate washing is indicated when upon contacting of the developer it acts on the unwashed indicator to develop a colour indicative of the insuff...

An airflow indicator for a vacuum cleaner is provided. The airflow indicator comprises a housing mounted to a casing of the vacuum cleaner. A piston chamber is defined within the housing. A piston is received in the piston chamber and is movable therein between a first position and a second position. A first port is formed in the housing and communicates with the piston chamber. The first port is open to ambient. A second port is formed in the housing and communicates with the piston chamber. Th...

The invention relates to a light indicator, comprising an indicator element (2) illuminable by a light source (1). The indicator element is manufactured from a substantially transparent material provided with an informative indicator pattern. The indicator element (2) is designed as a waveguide panel, wherein light beams propagate with total reflection and get outcoupled therefrom with a diffractive outcoupling system (2u), such as a grating structure or the like, which is configured as an indca...

A pressure indicator and a corresponding method are disclosed, the pressure indicator comprising a display diaphragm, optionally transparent, and an indicator diaphragm coupled to and in fluid communication with the display diaphragm. In use, pressure is applied to the diaphragms, which may be amplified, whereby a change in the pressure applied causes relative movement between the diaphragms which is observable either on the outer surface of the display diaphragm or through the display diaphragm...

A level indicator and method is provided which is intimately affixed to the outside surface of the outside wall of a container, for use in the determination of the level of the interface between a mass of flowable material and the void volume above it within a container. The level indicator includes a thermochromataic layer which has at least two thermochromatic materials. Each of the thermochromatic materials responds chromatically within a different operating temperature range. In one embodime...

A load indicator for an electric motor, comprising a first means (II, IU, CPU) for repeated determination of the motor load, a second means (CPU) for comparing the current motor load, as determined by the first means, with a preset load limit, and a third means (CPU), PP) for indicating that the current motor load exceeds the load limit. Moreover, a meant (T, CPU) is arranged to initiate a presetting of the load limit. This means is adapted to be actuated, when the motor runs in normal operation...

The key with a lock-unlock indicator is operable with a complementary lock set. The key has a body and an elongated key stem extending therefrom. A toggle bar is pivotally mounted or disposed on the key stem. The toggle bar operates in conjunction with a lock cam and an unlock cam mounted on the face of the complementary lock set. When the operator turns the key in one direction, the lock cam motivates the toggle bar thereby shifting its position. An indicator disposed in the key body displaying...