Device for Dispensing Doses of Fluid Substances of Variable Viscosity and Density
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United States of America Patent
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Issued Date -
Nov 20, 2008
app pub date -
Oct 30, 2006
filing date -
Nov 3, 2005
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The invention concerns a device for dispensing doses of fluid substances with different viscosities or densities, comprising a container (11), a piston (25) housed and sliding in a chamber (24) formed by a portion of the container, a load tank (33) formed by a remaining portion of said container and designed to contain the substance to be delivered, a metering mechanism (12) associated and moving with the piston (25), a preloaded thrusting device (27) associated with the piston with the metering mechanism to push it normally towards the substance in the load tank, and blocking means (12) between the metering mechanism and the container to alternately stop and release the piston to have it move forward under the thrust of said preloaded flexible device in lengths corresponding to a dose of the substance.
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