Chucking device for a medical or dental handpiece

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 8870570
SERIAL NO

13318778

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A medical or dental handpiece includes a tool holding/releasing device with a hollow shaft, a first holding unit and a second holding unit. The hollow shaft can be put into a drive motion for holding a treatment tool. The hollow shaft extends along a central axis and has a tool receptacle opening. The second holding unit is separate from the first holding unit and axially offset from the first holding unit relative to the central axis. Both holding units are designed to axially secure a treatment tool held in the hollow shaft and to transmit a torque to the treatment tool. Both holding units have at least one shaped element each and a bore penetrating the outer wall of the hollow shaft. The shaped element can be held in such a way that it projects through the bore into the interior of the hollow shaft. A locking sleeve is operatively connected to the shaped elements and can move relative to the hollow shaft. The locking sleeve surrounds the hollow shaft and an operating element operatively connected to the locking sleeve for the movement or sliding of the locking sleeve.

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First Claim

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Patent Owner(s)

Patent OwnerAddress
W&H DENTALWERK BURMOOS GMBHIGNAZ-GLASER-STRASSE 53 BÜRMOOS 5111

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Spitzauer, Josef Oberndorf, AT 6 20
Teufelberger, Gunter Bürmoos, AT 8 128
Wagner, Hannes Salzburg, AT 16 227

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Maintenance Fees

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11.5 Year Payment $7400.00 $3700.00 $1850.00 Apr 28, 2026
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