Hamilton Company

Jon E Frudden

Robert F Anderson

Thomas Barresi

Gregory Gulla

Eric Riedi

Randy Hall

Robert F Scalese

Son Nguyen

A probe head used in robotic assays for transferring liquid in miniscule quantities. The probe head includes an array of liquid transferring needles which move as a unit with the probe head. As the needles contact a surface, high spots or other irregularities on the surface are accommodated by needle compliance to assure all needles ultimately touch the surface. Touching contact assures reliable liquid transfer.

Ultra low volume probe

A releasably attachable manual dispensing aid is operable with a syringe having a syringe body and a syringe plunger that is movable within the syringe body. The dispensing aid includes a dispensing aid body that is releasably attachable to the syringe body. The dispensing aid further includes a dispensing aid plunger that is attachable to the syringe plunger, and has a slide that is slidable within the dispensing aid body. A fine adjustment, bottom stop, Chaney stop, and/or drag brake for the slide are optionally provided. An electronic linear position measuring device has a first portion fixed to the dispensing aid body and a second portion fixed to the dispensing aid plunger. Optionally, the dispensing aid includes a microprocessor that receives as inputs a calibration value for a particular syringe and the position signal, and determines as an output signal the true volume of liquid displaced by the syringe plunger movement.

Manual dispensing aid for a syringe

Growing community of inventors

Reno, NV, United States of America

Jon E Frudden