Pressure indicator for inflatable object

Details Pressure indicator for inflatable object Pressure indicator for inflatable object

G - Physics

01

L

G01L 19/08 (2006.01) G01L 7/08 (2006.01) G01L 17/00 (2006.01) G01L 19/12 (2006.01)

Patent

CA 2382640

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. The diaphragms may form a compartment preferably containing a liquid or gel. The indicator diaphragm may bear a recognisable configuration or pattern which can be coloured and may comprise a symbol or graphic projecting from its surface. The configuration or pattern may comprise at least two components, each component corresponding to a different pressure. Also disclosed is an inflatable device, especially a football or a tyre, comprising such a pressure indicator.

L'invention concerne un indicateur de pression et un procédé associé. L'indicateur de pression comprend un diaphragme de diffusion éventuellement transparent, et un diaphragme témoin relié et en communication fluidique avec le diaphragme de diffusion. En service, la pression est appliquée aux diaphragmes qui peuvent être amplifiés ; la modification de la pression appliquée entraîne un mouvement relatif entre les diaphragmes qui est visible soit sur la surface extérieure du diaphragme de diffusion soit à travers lui. Les diaphragmes peuvent former un compartiment contenant, de préférence, un liquide ou un gel. Le diaphragme témoin peut présenter une configuration ou une forme identifiable pouvant être colorée et pouvant comprendre un symbole ou un symbole graphique saillant sur sa surface. La configuration ou la forme peut comprendre au moins deux éléments, chacun correspondant à une pression distincte. L'invention concerne également un dispositif gonflable, en particulier un ballon de football ou un pneumatique, comprenant un tel indicateur de pression.

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