Method and apparatus for dispensing small amounts of liquid material

• Main Authors: JAMES C SMITH, JAMES W MESSERLY, LAURENCE B. SAIDMAN
• Format: Patent
• Language: English
• Published: 23.11.1999
• Edition: 6
• Subjects: APPARATUS FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; MACHINE TOOLS; MEASURING; MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUIDLEVEL; METAL-WORKING NOT OTHERWISE PROVIDED FOR; METERING BY VOLUME; PERFORMING OPERATIONS; PHYSICS; PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL; SOLDERING OR UNSOLDERING; SPRAYING OR ATOMISING IN GENERAL; TESTING; TRANSPORTING; WELDING; WORKING BY LASER BEAM

Apparatus and methods for dispensing droplets of liquid or viscous material. The apparatus generally comprises a valve operated dispenser and a control for moving the valve member with respect to a valve seat in rapid succession. This rapidly accelerates liquid or viscous material in a stream from t...