Patent Number: 6,170,343

Title: Electronically monitored mechanical pipette

Abstract: The present invention relates to an electrically monitored mechanical pipette which includes a microswitch in its volume delivery adjustment mechanism which operates to signal the electrical volume monitoring system of the pipette when a fluid volume delivery setting adjustment is being made. In this manner, the pipette operates in a low power mode during normal operation to display the present fluid volume delivery setting, but moves to a high power consumption mode when changes are being made to the fluid volume delivery setting. The microswitch allows the high power consumption elements in the electronic volume monitoring system, such as a Hall-effect transducer assembly, to be inactive and receive no power input until it is needed during adjustment of the fluid volume delivery setting.

Inventors: Conley; Paul G. (St. Charles, MO), Appal; Eugene R. (Florissant, MO)

Assignee: Tyco Group S.a.r.l.

International Classification: B01L 3/02 (20060101); B01L 003/02 ()

Expiration Date: 01/09/2018