Control for dental air-polisher
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United States of America Patent
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-
Feb 16, 1993
Grant Date -
N/A
app pub date -
Nov 28, 1990
filing date -
Nov 28, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A control unit for an air-polisher is provided, wherein a bleed air line and an air/abrasive line both communicate with a diaphragm valve which in turn communicates with an air polisher handpiece which is stored in a bracket or other holder. The diaphragm valve is closed when the handpiece is in an idle mode and not in its bracket. This blocks pressurized container air and bleed air from carrying water and abrasive out of the nozzle immediately after the handpiece is deactivated, without allowing soluble abrasive within the handpiece to form a plug therein.
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Family
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