Abstract: The invention relates to a medical or dental-medical handpiece (3) which has in its forward end region a lateral insertion opening (5a) for a tool and, lying opposite to the insertion opening (5a), a mounting opening (63) with an insert part (113), which can be placed therein, and a push button (93c) which is mounted displaceably between an outer initial position and an inner release position and is biassed into its initial position by means of a spring force, in which the push button (93) is supported with at least one stop (111) arranged thereon on at least one counter stop (112), and in that the insert part (113) is arranged sunk into the mounting opening (63) and the push button (93c) engages in the mounting opening (63) with slight play for movement.

Abstract: The invention relates to a medical or dental-medical handpiece (3) having a rotary part (12), in particular a turbine rotor (15a). In order to improve the handpiece with regard to small construction, running noise and economical construction, there is provided a roller bearing (21) for the purpose of mounting the rotary part (12), having at least two roller body rows arranged next to one another.

Abstract: The invention relates to a medical or dental-medical handpiece (3) having a rotary part (12) which is rotatably mounted in a bearing bushing (23) by means of a roller bearing (21) having an inner ring (21b) and an outer ring (21a). In order to improve the handpiece (3) with regard to an axial limiting of the roller bearing (21) there is arranged in the inner surface (23a) of the bearing bushing (23) or in the outer surface (21c) of the outer ring (21a) a first ring groove (25) in which there sits a securing ring (24) which projects out of the first ring groove (25) and bears at least with its one side on a shoulder surface (26a) of the respective radially oppositely lying part.

Abstract: The invention relates to a setting gauge (21) for setting a depth stop (6) on a handpiece (1), which has a connection device (3) for the releasable connection of a pin-shaped tool (4) with the handpiece (1), in particular for setting a depth stop (6) on a handpiece (1) for a working of a root canal (W2) in a tooth (Z). So that the setting of the depth stop can be effected more simply and with little manual effort, the setting gauge (21) has a connection element for connecting and positioning the setting gauge (21) on the handpiece (1) and at least one scale (27a, 27b, 27c) on the setting gauge body (22) which, in the position of the setting gauge (21) connected with the handpiece (1), extends parallel to the depth stop (6) and its setting path.

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).

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).

Abstract: The invention relates to a handpiece (1) in particular for medical or dental purposes, having a connection device (3) for a tool (4) which is arranged in the forward end region of the hand piece (1), and having a settable stop device (6) for limiting the penetration depth of the tool (4), which stop device has a stop part (7), which is adjustable in a guide (8) longitudinally of the penetration depth of the tool (4) and is secured in the respective adjusted position by means of a clamping force (11). For the purpose of more ready setting of the stop part the clamping force (11) is elastic and on the one hand is so great that it secures the stop part (7) against displacing forces effective in functional operation, and on the other hand is only so large that the stop part (7) can be manually displaced, and in that the stop part (7) is of a hard elastically bendable material and sits in the guide (8) bowed so far that its return bending force (11a) gives rise to the clamping force (11).

Abstract: In the case of a handpiece (3) for medical purposes, preferably for a cutting treatment of a dental root canal, with a tool holder (5) arranged in the front end region of the handpiece (3), with a retaining coupling (16) for detachable fastening of the tool (6) in the tool holder (5) and with a drive connection (8) extending lengthwise through the handpiece (3) for a rotary and/or reciprocating drive of the tool holder (5), an overload coupling (14) that limits the transmittable torque to a maximum torque value is arranged in the drive connection (8).

Abstract: A handpiece having a releasable retaining device for a tool having a shaft about which the tool rotates. The handpiece has a housing and a drive sleeve rotatably mounted in the housing. The drive sleeve has a hollow cylindrical insertion hole into which the shaft of the tool is placed. A drive means is provided for rotation of the drive sleeve. First and/or second releasable couplings are provided for rotatably and/or axially connecting the shaft to the drive sleeve. The releasable couplings have either a coupling slider or pressure member which is displaceable between coupling and decoupling positions. An actuating device is provided for displacing the coupling slider or pressure member into their decoupling position. In one embodiment the coupling slider is made of a ceramic material and fabricated into its final form by means of a single fabrication process without after treatment.

Abstract: A process for the cleaning and/or disinfection and maintenance care of an, in particular, hollow or tubular medical treatment instrument, in particular a medical or dental treatment instrument, such as a handpiece, in which the treatment instrument is cleaned and/or disinfected with a preferably liquid cleaning and/or disinfecting agent and is then subjected to maintenance care with a maintenance care agent, is characterized in that, there is used a cleaning agent and/or a disinfecting agent and/or a maintenance care agent, one or more of which agents contains or contain a medium which ensures mixing of the cleaning and/or disinfecting agent with the maintenance care agent.

Abstract: A handpiece with a detachable or removable handpiece sleeve for worktools or dental implements which are releasably inserted with the assistance of a clamping jaw which is rotatable through the intermediary of a drive shaft. The collet is maintained in a clamped position through the action of a spring, wherein the collet has an external conically-tapered end thereof facing towards the implement contacting against a conformingly conically-tapered end of a spindle sleeve facing towards the implement and which is arranged within the handpiece, includes an arresting device.

Abstract: A handpiece with a removable handpiece sleeve for worktools or dental implements which are releasably insertable therein with the assistance of a collet which is rotatable through the intermediary of a drive shaft. The collet is conically configured on its exterior at the thereof facing towards the dental implement and cooperates with the end correspondingly conically configured end of a spindle sleeve facing towards the implement, and in which the contact between the two conically-configured ends facing towards the implement is produced by a spring which is inserted intermediate an annular shoulder on the spindle sleeve and a clamping sleeve, and wherein the collet is releasable through a twisting turning motion imparted to the handpiece sleeve.

Abstract: A rod-shaped light conductor for medical purposes, for example, which is employed in the dental medicine. The light conductor is protected against thermal stresses through the intermediary of a special surface coating, as a result of which there is prevented any deterioration in the discharge of light from the end surfaces of the light conductor.

Abstract: A handpiece, especially for dental purposes, which is constituted of a gripping sleeve with a treating implement at one end thereof which is supported for limited reciprocating pivotal movement about its axis. The implement is drivable through the utilization of an intermediate drive shaft which is arranged within the gripping sleeve and which is similarly drivable in a limited reciprocable pivoting movement about its axis, whereby for producing the reciprocability of the intermediate drive shaft, the end of the intermediate drive shaft which is distant from the implement cooperates with a wobble surface or swash plate arranged at the end of a drive shaft proxime the implement, which drive shaft is rotatably supported within the handpiece. Moreover, a converting device is arranged between the end of the intermediate drive shaft which is distant from the implement and the swash plate, which converts the rotational movement of the drive shaft into a pivotal movement of the intermediate drive shaft.

Abstract: A dental handpiece, encompassing a gripping sleeve and a head sleeve which is bent relative to the longitudinal axis of the gripping sleeve, as well as a drive shaft which is supported within the handpiece and which drives a treating implement arranged in a head at the free end of the head sleeve. The drive shaft is transversely divided in the region of the bending location, wherein the two drive shaft parts are in interengagement through the intermediary of a follower or engaging device, and wherein a planetary ball gear drive is interposed in the driven drive shaft part. While retaining the planetary ball gear drive which acts as safeguard against overloads, it is possible, without an exchange of the complete handpiece, to effect in a rapid and simple manner a transition to working with a certain head which is selected from a large number of heads.

Abstract: There is disclosed a dental handpiece which comprises means at one end of the handpiece to mount a dental implement, a drive train arranged within the handpiece and extending to the implement-end in order to operate the dental implement, a light source arranged within the handpiece, and a light guide extending from the light source to a position adjacent to the implement-end of the handpiece for directing light to a treatment region adjacent to the dental implement, the light guide being arranged within the handpiece and along side the drive train.

Abstract: A dental handpiece with a gripping sleeve-like base member which is detachably connected with a headpiece mounting a work tool, a connecting sleeve of the headpiece being insertable into the power-take off end of the base member, wherein a roll body is radially movably supported in each of one or more cutouts in the base member wall, inwardly extending therethrough with a portion of its volume, which is movable through the intermediary of a coupling element movably arranged on the base member, and which includes an inclined plane for the engagement with the roll body under the assumption of a clamping fit in contact against the connecting sleeve.

Abstract: A surgical dental or dental technician's angled vibration member consisting of a gripping sleeve portion having a drive shaft supported therein, and an end or head sleeve portion which is arranged at one end of the gripping sleeve portion, whose axis extends at an angle to the axis of the gripping sleeve portion and within which an impact piston is axially reciprocable for a return stroke through the intermediary of an eccentric located on the end of the drive shaft. The impact piston, for the engagement of the eccentric, includes a side recess with a stop, which is provided along its edge and wherein, after passing beyond the stop, has associated therewith an operating spring for effecting the operating stroke, the spring being stressed prior to reaching the stop whereby the impact piston will during its operating stroke impart an impact to an axially movably supported tamping-type vibration tool located at the end inserted in the interior of the head sleeve portion.

Abstract: A dental handpiece having a sleeve, an axial drive shaft in the sleeve for driving a dental instrument at one end of the handpiece, a first coolant supply line in the handpiece, a second coolant supply line extending axially towards the dental instrument, and a coolant duct in the wall of the sleeve which intercommunicates the first and second coolant lines. The coolant duct extends rectilinearly and generally radially between an inner end which faces the interior of the sleeve and which communicates with the first coolant line, and an outer end which communicates with and is releasably connected to the second line at a location in the wall of the sleeve and which permits manipulation externally of the handpiece for releasing and connecting the duct and the second line.