Shane D Gunsalus

US Patent:

20170203322, Jul 20, 2017

Filed:

Jul 24, 2015

Appl. No.:

15/326457

Inventors:

- Irvine CA, US
Thomas Tisone - Orange CA, US
Eric P. Kuo - Upland CA, US
Shane Gunsalus - Westminster CA, US

Assignee:

BioDot, Inc. - Irvine CA

International Classification:

B05B 17/06
B01J 19/00
B01L 3/02

Abstract:

A dispenser and methods for transferring liquids are disclosed. The dispenser may include a capillary tube with tip having an aperture, a piezoelectric actuator coupled to the capillary tube at a location. Actuation of the piezoelectric actuator causes a pressure wave to propagate along the capillary tube toward the tip such that radial motion at the location is transmitted as distally extending axial motion of the tip, thereby causing a droplet of a predetermined volume to be ejected from the aperture. In some embodiments, the capillary tube has a modulus of elasticity in a range which dampens acoustical noise from the actuation and provides single drop stability over a range of drop sizes.