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| Number | Title | Issue Date |
| 7815433 | Adjustable tool drive arrangement The invention relates to an improved dental tool drive arrangement for a handpiece with a drive head, the tool drive arrangement permitting length adjustment of the tool in the drive head by concentrically supporting the tool in the drive head at any position from a... | 10/19/2010 |
| 7331738 | Drill adapter for a power screwdriver A drill adapter for a power screwdriver and including a locking device for releasably securing the drill adapter (28) on the support region (66) of the screwdriver (4) and having a push-on sleeve (30) supportable on the support region ( | 02/19/2008 |
| 7303394 | Hand-held piece for dental or surgical use including a resilient clamp In a hand held piece for dental or surgical use comprising a resilient clamp (20) for holding the cylindrical shank (16) of a tool, the height of the head (3) of the piece can be reduced owing to an inverted arrangement of the clamp in relation ... | 12/04/2007 |
| 7258547 | Press-type bit-holding mechanism of a dental high-speed handset A press-type bit-holding mechanism of a dental high-speed handset, including a hollow rotary shaft, a push button accommodated in the hollow rotary shaft and a holder barrel also accommodated in the hollow rotary shaft. The push button has a first coupling section f... | 08/21/2007 |
| 7214060 | Handpiece for dental or surgical use At the front, a handpiece (1) has a clamp (10) fitted to tightly grip the shank of a removable tool housed in guide holes (23, 25). The clamp has two or more levers (26) attached to an annular section (22) of the clamp by elastic j... | 05/08/2007 |
| 7207798 | Mechanized dental instrument A mechanized dental instrument includes an active part (2) and a sleeve (3) arranged on an end of the dental instrument which opposes the active part. The sleeve (3) is provided with a rotary drive means (4) that can, when assembled with ... | 04/24/2007 |
| 7179087 | Medical or dental-medical handpiece having a rearward and a forward handpiece section The invention relates to a medical or dental-medical treatment which at its rearward end has a coupling element for coupling on to a matching coupling element of a flexible supply line, and in its forward region has a holder device for a tool, the handpiece being of... | 02/20/2007 |
| 7140880 | Medical or dental-medical handpiece having a rotary part mounted in a roller bearing The invention relates to a medical or dental-medical handpiece having a rotary part which is rotatably mounted in a bearing bush by means of a roller bearing having an inner ring and an outer ring. In order to improve the handpiece with regard to an axial limiting o... | 11/28/2006 |
| 7137633 | Wrench-free manual chuck turbine A manual chuck includes a turbine having a centrally disposed aperture and a spindle including an elongated shaft portion positionable into the aperture in a substantially vertical direction. The spindle further includes a head portion integral with the shaft portio... | 11/21/2006 |
| 7021854 | Surgical arm assembly including quick connect mechanism A surgical arm system for holding and positioning one or more instruments during a surgical procedure includes at least one quick connect mechanism that beneficially allows for simple and expeditious, yet reliable disassembly and reassembly of the arm by any member ... | 04/04/2006 |
| 6932357 | Gear reducing collet nut assembly A gear reducing collet nut assembly is provided for holding a tool bit. The assembly includes an outer grip sleeve that can be rotated to actuate a clamping structure with a bore for holding a tool bit. More specifically, the assembly includes a planetary gear syste... | 08/23/2005 |
| 6821120 | Dental handpiece with tool holder A dental handpiece is disclosed, which includes a tool holder for receiving and detachably holding a dental treatment tool therein, and a tubular compressor disposed around the tool holder. The tubular compressor has a flared inner surface along a portion of its len... | 11/23/2004 |
| 6209886 | Resecting tool with independent variable axial extension for tool implements and guide sleeves A resecting tool contains a rotatable chuck inside a base for engaging the drive shaft of a motor. The chuck extends into a tubular casing that has an outer actuator sleeve. The sleeve is limited to rotation relative to the casing and is used to move a pa... | 04/03/2001 |
| 6155826 | Grip chuck spindle assembly for a dental handpiece The grip chuck spindle assembly is used to hold burs and drills in dental high speed handpieces. The grip chuck spindle assembly consists of three parts. An outer spindle which is hollow having three different diameter bores and a outer diameter sized to ... | 12/05/2000 |
| 5911578 | Head assembly for a medical handpiece A head assembly for a medical handpiece includes a head housing and a rotor spindle contained in the housing. The spindle defines a longitudinal through-bore with an internal screw thread. An adjustable chuck is received within the through-bore of the spi... | 06/15/1999 |
| 5810588 | Clamping device particularly useful for dental handpieces A clamping device for clamping a rodlike member to a housing, particularly a dental tool to a handpiece, includes a tapered sleeve and a tapered collet received within the tapered sleeve, both having open ends for receiving the rodlike member. A depressib... | 09/22/1998 |
| 5779474 | Sudden stop mechanism and air-gap seal for dental handpiece A high speed air-driven powerhead in a dental handpiece includes an automatic chuck with outside surfaces protection from overheating. An autochuck release push button on the back of the powerhead is constructed of low thermal conductivity and heat reflec... | 07/14/1998 |
| 5730596 | Dental instrument holder A dental instrument holder (10) comprises a clamping sleeve (28) having two cylindrical annular closed bearing regions (50, 52) axially spaced apart is arranged in the driven hollow shaft (22) accommodating the dental instrument. A spring-loaded clamping ... | 03/24/1998 |
| 5688122 | Chucking device for a dental tool A chucking device for a dental tool in a dental handpiece or angle head includes a clamping sleeve with resilient tongues. The resilient tongues of the clamping sleeve are arranged at a distance from each of the two ends of the clamping sleeve. On the sid... | 11/18/1997 |
| 5653453 | Collet chuck An object of the present invention is to provide a collet chuck in which a chuck section of a collet is so formed as to provide a greater chucking force when the collet chuck is turned. To accomplish this object, a collet chuck is provided in which a coll... | 08/05/1997 |
| 5591028 | Dental cutting tool holder A dental cutting tool holder which prevents the occurrence of sliding between the cutting tool and collet chuck at high-speed rotation, and prevents dislocation of the cutting tool securely, comprising a collet chuck into which a dental cutting tool is in... | 01/07/1997 |
| 5549474 | Clamping device particularly useful for dental handpieces A clamping device for clamping a rodlike member to a housing, particularly a dental tool to a handpiece, includes a tapered sleeve and a tapered collet received within the tapered sleeve, both having open ends for receiving the rodlike member. The inner d... | 08/27/1996 |
| 5518398 | Dental handpiece having rotatable contact member A dental handpiece contains a tool for dental treatment operation, tool holding members for detachably and rotatably holding the tool, tool detachment members for abutting against the tool holding members to detach the tool from the tool holding members, ... | 05/21/1996 |
| 5478093 | Surgical handpiece A handpiece for use in small-scale surgery and microsurgery, for example, oral surgery or surgery in the ear, nose and throat area includes a handpiece sleeve and a collet chuck which is rotatable about an axis and is arranged in the handpiece sleeve. The... | 12/26/1995 |
| 5383785 | Push-button operated chucking device for a dental angle piece A chucking device for holding a dental tool by a collet chuck with collet chuck sleeve, wherein the collet chuck can be released by a push button against the force of clamping spring. The collet chuck sleeve has at both ends thereof axial slots, so that i... | 01/24/1995 |
| 5254004 | Self-tightening chuck for dental tools A rotary dental drive tool has a rotatable driving member which is connected to a working tool via a self-tightening chuck, the rotatable driving member rotating in a clockwise direction during use. The chuck includes a chuck member having a tool-engaging... | 10/19/1993 |
| 5252067 | Handpiece for dental medical treatment The present invention provides a handpiece for dental medical treatment in which a head portion encasing therein an air turbine is detachably mounted on a handpiece body whereby the handpiece body capable of being subjected to high temperature sterilizati... | 10/12/1993 |
| 5165896 | Clamping mechanism for a dental tool A clamping arrangement for clamping a cylindrical shaft of a tool in a dental handpiece includes a clamping sleeve having resilient tongues for gripping the cylindrical shaft and being capable of being moved radially outward by an adjustable plunger to re... | 11/24/1992 |
| 5074789 | Chucking device for dental handpiece A chucking device for a dental handpiece includes a cutting tool, a collet having a plurality of slits to permit the cutting tool to be received and attached in position in the collet, a rotational sleeve for transmitting rotation to the collet, a locking... | 12/24/1991 |
| 5074788 | Device for preventing intrusion of foreign matter into dental handpiece A device for preventing intrusion of foreign matter into a dental handpiece includes an end cap secured to a bur sleeve for rotation in unison with the bur sleeve. Around the end cap, there are delimited gap sections the one end of which communicates with... | 12/24/1991 |
| 4874314 | Socket to clampingly hold dental tools A socket, which receives a tool having a cylindrical shaft and which is mounted for rotation to rotate the tool, has an outer sleeve which receives a clamping sleeve and a ram for engaging a first end of the clamping sleeve. The first end of the clamping ... | 10/17/1989 |
| 4863381 | Dental handpiece The improved dental handpiece comprises an operating sleeve slidably mounted on an outer circumference of the rotor shaft, said operating sleeve being formed with a flange, a spring for normally biasing the operating sleeve frontwardly, an operation colla... | 09/05/1989 |
| 4844070 | Changeable scalpel blade and chuck assembly A scalpel is provided including a chuck shaft having a diametric slot at its front end into which the rear end of a blade is inserted. The blade is provided with a cylindrical collar intermediate its ends which abuts against the front end of the chuck sha... | 07/04/1989 |
| 4781589 | Clamping arrangement, especially for dental instruments A clamping arrangement, especially for the clamping or gripping engagement of dental implements, consisting of a receiving sleeve which is rotatably supported in a handpiece and is connected with a rotary drive, which includes at least one rod-shaped elon... | 11/01/1988 |
| 4773856 | Device for actuating a tool fastening and releasing mechanism A device for releasing a tool from a tool fastening mechanism of a dentist's handpiece comprises a push-piece that is held in an outer, inoperative position by a spring, and a slide mounted on a rotor of the dentist's handpiece. Upon being pressed, the pu... | 09/27/1988 |
| 4690641 | Contra-angle or turbine head of a dental handpiece A chuck for receiving a plain shank of a dental burr is rotatably mounted in the head of a dental handpiece and is driven by a pinion or by turbine vanes. The chuck comprises a sleeve adapted to receive the shank of a burr and provided with at least one e... | 09/01/1987 |
| 4611990 | Dental handpiece construction A dental handpiece grips a removable dental tool by teeth within the end of a resilient quill carried within the spindle of said handpiece and when rotated in one direction by the handpiece turbine providing an axial force on the dental tool tending to dr... | 09/16/1986 |
| 4595362 | Handle A screw (22) having the circumference of its head (23) toothed like a pinion firmly holds the cylindrical shank of a rotary tool in position in a slotted sleeve (17). A rack (25) on the front end of the hollow cylindrical spindle (24) meshes with the pini... | 06/17/1986 |
| 4595363 | Dental handpiece having means for opening and closing a chuck A device for opening and closing a chuck for a dental handpiece has a handle portion and a powerhead assembly including a hollow driving shaft having, adjacent to its outer orifice, a forwardly outwardly tapering portion defining a small diameter rear por... | 06/17/1986 |
| 4536157 | Lever actuated chuck mechanism for dental handpiece In a dental handpiece, a drawback bur chuck actuable to open by a cam lever mounted atop the handpiece head and acting axially downward on the chuck against a spring which urges the chuck upward into clamping engagement with a bur shank when the cam lever... | 08/20/1985 |
