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US 4,535,576 AGranted
Anti-static process for abrasive jet machining
AssigneePennwalt Corporation
InventorsRahul B. Shukla, Douglas L. Shipman
Life of this patent
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Abstract
Abrasive jet machining apparatus employs a stream or mist of electrically grounded solution of a conducting electrolyte directed at or adjacent the work removal site of a workpiece to instantaneously discharge to ground all static charge build-up formed on the workpiece by the gas/abrasive powder stream as a result of the removal.
Claims13
Abrasive jet machining apparatus for removing portions of a workpiece comprising,
- a gas supply and means for containing said gas supply,
- an abrasive powder supply communicating with said gas supply, and means for containing said abrasive powder supply,
- means for providing a powder stream from said gas and abrasive powder,
- an electrically conducting electrolyte solution, connected to a ground, communicating with said gas supply, and means for containing said electrolyte solution,
- means for simultaneously delivering said powder stream and solution to said workpiece portions whereby build-up of static charges on said workpiece are instantaneously discharged to said ground through said electrolyte solution connected to said ground.
2 more elements
Dependencies are inferred from the claim text.