Patent ID: 6244694
Filing Date: 2001-06-12
Classification: B41J

Abstract:
Apparatus for hydraulically dampening vibration developed in liquids being expelled drop by drop from a chamber, comprising:a. an expeller for expelling liquids drop by drop in a controlled manner;b. a chamber housing the expeller and from which the drops are expelled, the drop expeller produces vibration in the liquid that remains after drop expulsion;c. an outlet orifice on the chamber through which the drops are expelled from the chamber;d. an inlet conduit hydraulically connected for fluid flow into the chamber;e. an outlet conduit hydraulically connected for fluid flow out of the chamber, said outlet conduit being hydraulically independent of the outlet orifice; andf. means, operatively connected to the chamber, both for producing liquid flow out of the inlet conduit, through the chamber, and into the outlet conduit and also for sweeping the vibration remaining in the liquid out of the chamber and into the outlet conduit so that the vibration is hydraulically damped.