Liquid purification or separation – Processes – Chemical treatment
Reexamination Certificate
2006-01-31
2006-01-31
Walker, W. L. (Department: 1723)
Liquid purification or separation
Processes
Chemical treatment
C210S668000, C210S669000, C210S748080, C422S105000, C204S229300
Reexamination Certificate
active
06991736
ABSTRACT:
The invention pertains generally to dental units (e.g., a high-speed dental handpiece (11), an ultrasonic scaler (13) and an air/water syringe (12)) connected to a water supply that provides coolant and rinse water to the dental units. More particularly the invention pertains to a dental unit using water that is continuously treated with a water treatment agent, such as microbiocidal silver ions. The treated dental unit water is supplied to the dental units via dental unit waterlines (6, 7, 8, 9, and10).
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Menon Krishnan S.
Townsend and Townsend / and Crew LLP
Walker W. L.
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