Apparatus and method of introducing a free-flowing balancing...

G - Physics – 01 – M

Patent

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Details

G01M 1/32 (2006.01) B65B 1/04 (2006.01)

Patent

CA 2189290

This invention discloses an apparatus for introducing a free-flowing balancing material into a tire through a tire valve stem. The apparatus comprises a container for confining a predefined amount of free-flowing balancing material, and a flow path for pressurized air which extends from the source of the pressurized air to an air inlet, from the air inlet to a mixing chamber in communication with the container through an opening, and from the mixing chamber to an air outlet. The flow path has a pressure regulator therein, a venturi nozzle within the mixing chamber to accelerate the air flow and lower the air pressure within the mixing chamber to draw the free-flowing balancing material from the container into the mixing chamber; and a chuck for introducing the mixture of free-flowing balancing material and pressurized air from the air outlet and into a tire valve stem. The volume of the container is large enough to contain an amount of free-flowing balancing material sufficient to effect dynamic balancing of a tire and associated wheel assembly.

Cette invention concerne un appareil servant à injecter dans un pneumatique, via la valve de gonflage de celui-ci, un matériau d'équilibrage fluide. L'appareil se compose d'un réservoir de matériau d'équilibrage de contenance prédéfinie et d'un circuit d'alimentation en air comprimé qui va de la source d'air comprimée à une sortie d'air en passant successivement par l'orifice d'admission d'air de l'appareil et une chambre de mélange communiquant avec le réservoir de matériau d'équilibrage. Ce circuit comprend un régulateur de pression, une buse à venturi servant à accélérer le flux d'air et à abaisser la pression dans la chambre de mélange pour y aspirer du matériau d'équilibrage, et un raccord d'injection de mélange matériau d'équilibrage/air comprimé via la valve de gonflage du pneumatique. Le réservoir contient suffisamment de matériau d'équilibrage pour réaliser l'équilibrage dynamique d'un pneumatique et de la roue correspondante.

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