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Drop-in Static Grounding Collar Disclosure Number: IPCOM000019172D
Publication Date: 2003-Sep-03

Publishing Venue

The Prior Art Database


Static charge build-up is significant in the waste toner bottles of systems using cyclone separators, due to the sliding of toner against the cyclone and waste bottle walls. This must be bled to ground before an arc occurs across a combustible toner-air mixture, initiating an explosion or deflagration. Ground collars (figure below) can be made from Phosphorous Bronze. They are photo-etched to provide the required sharp points when formed. The key feature is sharp metallic points that induce a non-incendiary corona discharge vs. a spark that is likely to occur between rounded insulators.