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| Application No. | Application Title | Issue Date |
| 20100126600 | FAULT-TOLERANT CHEMICAL INJECTION SYSTEM FOR OIL AND GAS WELLS A metering body for a chemical injection system comprises a free piston having a pair of mechanically-actuated poppet valves which may individually open to permit fluid to pass from one side of the free piston to the other. The free piston slides within a cylinder havin... | 05/27/2010 |
| 20100065585 | LIQUID MATERIAL DISPENSER Methods and apparatus for dispensing liquid material provide the option to dispense precise and repeatable quantities or volume of material over a wide range of viscosities. In one embodiment, a metering chamber is provided that can be filled and emptied at the same tim... | 03/18/2010 |
| 20070175916 | Method and Apparatus for Volumetric Dosing A method and an apparatus is proposed for volumetric dosing of a predetermined or selected dose of a product in the form of powdery material, a slurry, or a suspension (16) from a multiplicity of supply sources (18), using a multiplicity of dosing chambers... | 08/02/2007 |
