Product delivery device with rapid piston rod setting
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United States of America Patent
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-
Nov 30, 2010
Grant Date -
May 28, 2009
app pub date -
Oct 22, 2008
filing date -
Jun 28, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A substance delivery device including a casing formed by a first casing portion for a substance reservoir including a piston, a piston rod movable in an advancing direction to move the piston toward an outlet of the reservoir to deliver the substance, a dosing element which performs a dosing movement relative to the casing and, together with the piston rod, performs a delivery movement in the advancing direction, a dosing member connected to the dosing element wherein the dosing member is movable generally transversely to the piston rod to enable the piston rod to be moved counter to the advancing direction, a resetting element movably connected to the first casing portion to perform dosing member and piston rod disengaging and engaging movements, and a cam gear coupling the resetting element to the dosing member, wherein the cam gear forms a guiding rail on which the dosing member is guided.
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