Foot-operated pipette dispenser

Details Foot-operated pipette dispenser Foot-operated pipette dispenser

2006-02-14

2006-02-14

Williams, Hezron (Department: 2856)

Measuring and testing

Sampler, sample handling, etc.

Capture device

C073S864010, C073S864150, C422S091000, C422S105000

Reexamination Certificate

active

06997068

ABSTRACT:
A pipette dispenser unit having a hand-held pipette dispenser having a pipette connector and a handle, a source of positive and negative air pressure in fluid connection with said pipette connector, and a foot-operated controller for regulating the flow of air between said air pressure source and said pipette connector. A method of metering fluid through a pipette by connecting the pipette to the pipette dispenser, holding the dispenser with one hand, and controlling fluid flow through the pipette by operating the controller with at least one foot.

REFERENCES:
patent: 3310002 (1967-03-01), Wilburn
patent: 3691844 (1972-09-01), Moore
patent: 4041764 (1977-08-01), Sabloewski et al.
patent: 4475666 (1984-10-01), Bilbrey et al.
patent: 4598840 (1986-07-01), Burg
patent: 5616871 (1997-04-01), Kenney
patent: 6240791 (2001-06-01), Kenney
patent: 6254832 (2001-07-01), Rainin et al.
patent: 6734026 (2004-05-01), Kenney
“Pulse Width Modulation”, available on the Internet at <http://www.cpemma.co.uk>.
“Gundfos Pump Solutions”, available on the Internet at <http://www.gundfos.com>.
“Pulse Width Modulation DC Motor Control”, available on the Internet at <http://www.aaroncake.net>.

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