Pump drive
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United States of America Patent
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N/A
Issued Date -
Nov 3, 2005
app pub date -
May 27, 2005
filing date -
Jun 4, 2004
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A membrane or piston pump drive comprises a stepping motor (2) and a rotary-to-linear conversion mechanism for converting the rotary movement into a translation movement (6). The rotary-to-linear conversion mechanism comprises a rotary member (4) and a piston member (7) intended to move a piston or a membrane of the pump. The stepping motor comprises a rotor coupled to the rotary member which engages the piston member (7) in order to drive it in an essentially linear reciprocating movement.
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