Medical and dental handpiece
AssigneeKaltenbach & Voigt GmbH & Co.
InventorsBernhard Kuhn, Bernd Gugel
Life of this patent
Estimating the term…
Abstract
The invention relates to a handpiece (3) for medical purposes, having a tool holder (5) arranged in the forward end region of the handpiece (3), a retaining coupling (16) for releasably fixing a tool (6) in the tool holder (5), and a drive connection (8), for a rotary and/or stroke drive of the tool holder (5), extending longitudinally through the handpiece (3), there being provided an arrangement for limiting the maximum torque value which can be transmitted to the tool holder (5) to a lesser torque value. For the purpose of broadening the range of application of the handpiece (3), the arrangement can be selectively deactivated and again activated, by means of a setting device (14).
Claims25
Handpiece for medical purposes, comprising
- a tool holder disposed in a forward end region of the handpiece,
- a retaining coupling for releasably fixing a tool in the tool holder,
- a drive connection for a rotary and/or stroke drive of the tool holder, extending longitudinally through the handpiece, and
- an arrangement for limiting the maximum torque value that can be transmitted to the tool holder to a lesser torque value,
- wherein that the arrangement can be selectively deactivated and again activated, by means of a setting device, and
- wherein the arrangement comprises an overhead coupling disposed in the drive connection, which limits the transmissible torque to the lesser torque value.
Handpiece for medical purposes, comprising
- a tool holder disposed in a forward end region of the handpiece,
- a retaining coupling for releasably fixing a tool in the tool holder,
- a drive connection, for a rotary and/or stroke drive of the tool holder, extending longitudinally through the handpiece,
- an overload coupling, disposed in the drive connection, which limits the transmissible torque to a maximum torque value,
- the overload coupling having two coupling disks disposed coaxially to one another, which at their facing sides have coupling recesses having flanks and coupling projections having a height distributed in a circumferential direction,
- at least one coupling disk being mounted axially displaceably and elastically biased against the other coupling disk and,
- a coupling roller element disposed in each case in two axially oppositely lying coupling recesses,
- wherein the coupling projections of at least one coupling disk are shorter than the coupling recesses in the circumferential direction.
Dependencies are inferred from the claim text.