Fluid-dispensing and refilling system for a power toothbrush
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United States of America Patent
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Apr 24, 2001
Issued Date -
N/A
app pub date -
Sep 24, 1999
filing date -
Jan 13, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A pump used in a power toothbrush for fluid delivery to the bristles. The pump moves fluid provided to it to a dispensing valve located in the brushhead. The pump includes a pump chamber with a piston ball located therein. The piston ball moves within the chamber in response to movement of the brushhead, moving fluid out a discharge end of the pump chamber under pressure. The pump includes a fluid exit channel which connects the discharge end of the pump chamber with an opening in the brushhead in which the dispensing valve is located.
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