Pumps – Expansible chamber type – Elongated flexible chamber wall progressively deformed
Reexamination Certificate
2011-05-17
2011-05-17
Kramer, Devon C (Department: 3746)
Pumps
Expansible chamber type
Elongated flexible chamber wall progressively deformed
C417S223000, C417S429000, C417S475000, C417S477100, C417S216000
Reexamination Certificate
active
07942654
ABSTRACT:
The present invention provides an addressable multi-channel peristaltic pump. According to the invention, this pump design allows for selection and operation of one or more pump heads on a drive shaft, while locking other non-selected pump heads in a stationary position. It is possible to operate the multi-channel pump using a limited number of motors, preferably two motors: a selector motor and a dispense motor. Thus, the pump provides for pumping or dispensing of one or more fluids without the need for multiple pumps. Likewise, compared with typical single motor multi-channel systems, where all pump heads on the drive shaft must rotate at the same time, the present invention provides for selective dispensing of one or more fluids. The pumps of the present invention are suitable for any multiple fluid transfer application, including in automated multi-channel reagent dispensing systems, such as nucleic acid purification systems.
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International Search Report received in PCT/US2008/071570, mailing date Nov. 26, 2008, 15 pp.
Agilent Technologie,s Inc.
Bobish Christopher
Kramer Devon C
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