Pumps – Expansible chamber type – Elongated flexible chamber wall progressively deformed
Reexamination Certificate
2011-06-07
2011-06-07
Freay, Charles G (Department: 3746)
Pumps
Expansible chamber type
Elongated flexible chamber wall progressively deformed
C417S477300, C604S153000, C074S567000
Reexamination Certificate
active
07955060
ABSTRACT:
A pumping apparatus has a peristaltic drive device for pumping a medium through a line that has a compressible portion. The pump contains a one-piece shaft with offset cam segments and lamellae. The shaft may or may not include a core shaft or a continuous core region for an increase in stability. The continuous core region has cam segments offset with respect to one another and contiguous to one another. The ratio between the height and stroke of the lamellae is about 4:1 or less.
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Concise Explanation of Relevance for DE 29805173 U1.
Concise Explanation of Relevance for DE 3202251 A1.
Freay Charles G
Jacobs Todd D
Knobbe Martens Olson & Bear LLP
PFM Medical TPM GmbH
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