Prophy head
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 13, 2001
Grant Date -
N/A
app pub date -
Feb 29, 2000
filing date -
Mar 3, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Prophy head for a handpiece used in dentistry. The prophy head has a rotating shaft which holds a polishing member, a bearing for supporting the shaft, a housing for retaining the bearing, and a rotary dust control device which rotates with the shaft and prevents intrusion of contaminants. The dust control device has a surface extending radially outwardly from the shaft and downwardly beyond the lower end of the housing, and a surface in close proximity to the inner surface of the lower end of the housing.
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