Having Motor Patents (Class 433/131)
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Patent number: 11890149Abstract: A medical dental grinding apparatus comprises an apparatus body, wherein an air pipeline, a clamping mechanism, and a grinding mechanism are provided in the apparatus body; the air pipeline includes an air inlet pipeline, an air outlet pipeline, and a U-shaped connection pipeline; a silencer is connected to an upper port of the air outlet pipeline; a plane where the air pipeline is located is perpendicular to a plane where the clamping mechanism is located, and the grinding mechanism is provided below the air pipeline; the grinding mechanism is driven by high-pressure air in the air pipeline to operate, so that a hidden danger of electric leakage caused by using an electric apparatus in a fragile oral environment is avoided; and a steel wire is fixed by the clamping mechanism, so that the grinding safety is ensured.Type: GrantFiled: March 17, 2021Date of Patent: February 6, 2024Assignee: WUXI INSTITUTE OF TECHNOLOGYInventors: Chengming Rao, Qiang Ding, Conggui Huang, Huabin Mei, Ping Cui, Jun Wang, Ming Jiang
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Patent number: 11801118Abstract: A dental treatment apparatus includes a handpiece holding a cutting tool in its head, a drive portion driving the cutting tool held by the head, and a control portion controlling the drive portion in accordance with a drive sequence. The drive sequence includes at least one forward rotation drive for rotating the cutting tool in a cutting direction to cut a treatment portion and at least one reverse rotation drive for rotating the cutting tool in a non-cutting direction. Under the control of the drive portion in accordance with the drive sequence, a cumulative amount of rotation which is an accumulation of an amount of rotation in forward rotation drive and an amount of rotation in reverse rotation drive does not exceed a set value at any time point.Type: GrantFiled: August 9, 2018Date of Patent: October 31, 2023Assignee: J. MORITA MFG. CORP.Inventors: Kyohei Kato, Naoki Katsuda, Kazunari Matoba
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Patent number: 10575924Abstract: An ultrasonic dental handpiece system with rotary coupling comprising a dental handpiece and a dental handpiece tip wherein the system incorporates a swivel mechanism and dynamic fluid interface for the dental handpiece and dental handpiece tip to rotate freely relative to the dental handpiece cable thereby decoupling the handpiece from a torsion load applied to it by the handpiece cable and internal tubing and wires. The ultrasonic dental handpiece with rotary coupling generally includes a handpiece to which a piezo assembly and secondary coil are housed and a cable assembly including a primary coil and handpiece cable wherein the handpiece cable provides a supply of electrical energy and cooling lavage. The primary and secondary coils form a transformer wherein the secondary coil is inductively coupled to the primary coil with the secondary coil in electrical communication with the piezo assembly. A method of using a handpiece is also disclosed.Type: GrantFiled: October 17, 2017Date of Patent: March 3, 2020Assignee: DENTSPLY SIRONA INC.Inventor: Kenneth R Guaragno
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Patent number: 10111734Abstract: The present invention describes a dental kit-of-parts including an implant abutment, a dental restoration and a screw. The head of the screw is provided in a recess formed in the kit-of-parts, with the screw shaft extending through a hole in the implant abutment. A channel in the dental restoration allows access to the screw head by a tool, wherein the diameter of the channel is smaller than the diameter of the screw head. The dental kit-of parts can be manufactured using rapid prototyping such that the captive screw is formed within the combination of the implant abutment and the dental restoration or through conventional means, with the dental abutment and the dental restoration being ex-situ connected to enclose the screw.Type: GrantFiled: September 25, 2014Date of Patent: October 30, 2018Assignee: NOBEL BIOCARE SERVICES AGInventor: Nicolai Bernhard
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Patent number: 9827069Abstract: A dental handpiece control apparatus including: a relay 17 that switches a polarity of a voltage applied to a motor 20, and thereby switches a rotation direction of the motor 20 to forward rotation and backward rotation, the motor 20 being incorporated in the dental handpiece to rotate a cutting tool (a file) mounted to the dental handpiece; and a control section 11 that controls the switching of the voltage polarity by the relay 17 based on a rotation angle ?F for forward rotation and a rotation angle ?R for backward rotation of the motor 20, the rotation angle ?F and the rotation angle ?R being associated with state information of the file.Type: GrantFiled: January 11, 2013Date of Patent: November 28, 2017Assignee: NAKANISHI INC.Inventor: Makoto Kunisada
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Patent number: 9757208Abstract: A medical or dental handpiece has a grip. The grip includes first to third rotation shafts. The first and second shafts are connected through a first gear mechanism and the second and third shafts are connected through a second gear mechanism so that a rotation is transmitted from the first shaft through the first gear mechanism to the second shaft and then from the second shaft through the second gear mechanism to the third shaft. The first or second gear mechanism has an internal gear secured on one shaft and an external gear secured on the other shaft, the internal and the external gears being engaged with each other. The external gear is substantially enclosed within a cylindrical plane extending along a peripheral edge of the internal gear.Type: GrantFiled: October 25, 2016Date of Patent: September 12, 2017Assignee: J. MORITA MFG. CORP.Inventors: Hitoshi Tanaka, Shozo Nakayama
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Publication number: 20150064648Abstract: A dental handpiece (1) having a drive (3) of a tool (4), which drive is located in a head housing (2), has at least one media-conducting line arranged in the head housing, which media-conducting line has an outlet opening to the tool, and a tool receptacle (16) arranged in a drive chamber, which tool receptacle is rotatably supported by means of a rolling bearing (11) in a support (14) of the head housing (2) on a side of the drive chamber facing the tool. The rolling bearing has an outer race (13), which is supported against the head housing (2) radially in the support (14) in the area of a raceway (22) and which has a sub-area (21), the outside diameter D2 of which is reduced compared to the outside diameter D1 in the area of the raceway (22). The head housing has a housing projection (23), which extends into the area of the reduced outside diameter D2, and the media-conducting line (17) runs at least partially through said housing projection (23).Type: ApplicationFiled: April 2, 2013Publication date: March 5, 2015Inventors: Thomas Bierbaum, Matthias Rein, Ralf Sutter, Siegfried Goisser
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Patent number: 8936466Abstract: Drilling of an implant shaft is carried out with a handpiece tool whose location and angular orientation with respect to a radiographic working guide is updated in real time with respect to the radiographic working guide and anatomical structures of the patient, free of viewing obstructions. Prior to the drilling, the radiographic working guide is fitted to a particular patient. Real-time imaging support is provided on a display of a computer, wherein the radiographic workpiece guide includes a plurality of fiducial markers that define a substantially planar reference surface of the radiographic workpiece guide. The radiographic workpiece guide also includes an alignment structure located a predetermined distance from a pilot hole proximate the work site. The image is updated based on an initial radiographic scan and updated position information from the handpiece tool as to location and angular orientation of the handpiece tool relative to the workpiece guide.Type: GrantFiled: July 20, 2012Date of Patent: January 20, 2015Assignee: Precision Through Imaging, LLCInventors: Allen M. Moffson, Majid Azmoon
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Patent number: 8734153Abstract: An intelligent dental handpiece control system is disclosed. The handpiece includes a sensor which detects a vibration, sound, force or torque frequency/time signal produced by the handpiece in use and signal processor which produces or determines secondary signal characteristics such as the handpiece torque, force or angular velocity. A controller analyzes the secondary signal characteristics and produces a control signal which controls or stops the angular velocity of the dental handpiece in order to avoid overdrilling of healthy tooth material or damaging the nerves in the jaw during dental implant operations. The controller may also provide a warning signal to the user and/or control the angular velocity of the handpiece.Type: GrantFiled: April 15, 2011Date of Patent: May 27, 2014Assignee: Simon Fraser UniversityInventors: Siamak Arzanpour, Vahid Zakeri
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Publication number: 20140087329Abstract: A drive motor of a dental handpiece for driving a cutting tool of the handpiece is provided that is connected to the dental handpiece on its front end side and includes a cylindrical casing; a rotor unit, which is rotatably supported inside the casing and outputs a driving force; a stator unit provided around the rotor unit inside the casing; and an air path which causes cooling air supplied from the rear end side of the drive motor to pass through an airtight cooling room circumferentially extending between the stator unit and the casing, and to be discharged from the rear end side.Type: ApplicationFiled: September 20, 2013Publication date: March 27, 2014Applicant: NAKANISHI INC.Inventors: Shinichiro MUTO, Hayato MATSUSHITA, Akito NAKAMURA
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Patent number: 8641417Abstract: A system for enhanced sealing against intrusion of moisture and other contaminants for medical/dental handpieces having rotating or other moving elements driven by a motor within the handpiece. The enhanced sealing includes tandem seals on stepped diameters to provide additional flow pathway impediments. The tandem seals preferably include spring seals that are positioned in opposite directions to provide enhanced sealing against pressures in two different directions that occur during the pressurization and vacuum cycles of an autoclaving process. Additional enhancements include the use of annular sealing rings with x-shaped cross sections.Type: GrantFiled: October 27, 2009Date of Patent: February 4, 2014Assignee: Arthrex, Inc.Inventors: Ajay Kumar, Kevin J. Stanton
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Publication number: 20130224678Abstract: The present invention is directed to a dental treating apparatus including: a hand piece; a power source (micro motor); a driving unit (motor driver); and a controller. The driving unit drives the cutting tool so as to be switchable between first driving in which the cutting tool is driven clockwise and second driving in which the cutting tool is driven counterclockwise. When a rotation direction in which the cutting tool cuts an object to be cut is defined as normal rotation and a rotation direction opposite to the normal rotation is defined as reverse rotation, the controller sets the first driving as driving for the normal rotation when a first cutting tool rotated clockwise is held on the head unit, and sets the second driving as the driving for the normal rotation when a second cutting tool rotated counterclockwise is held on the head unit.Type: ApplicationFiled: February 25, 2013Publication date: August 29, 2013Applicant: J. MORITA MANUFACTURING CORPORATIONInventor: J. Morita Manufacturing Corporation
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Publication number: 20130203014Abstract: An electric dental handpiece including a head engaging a handle and configured to rotatably support a tool. The handle includes a lower handle portion and an upper handle portion with the lower handle portion engaging the head and the upper handle portion having an attachment area configured for attachment to a power supply. An electric motor is positioned with a majority thereof within the lower handle portion and is configured to rotate the tool.Type: ApplicationFiled: November 21, 2012Publication date: August 8, 2013Applicant: SPRING HEALTH PRODUCTS, INC.Inventor: SPRING HEALTH PRODUCTS, INC.
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Patent number: 8487488Abstract: In a dental, dental-medical or dental-technical handpiece, having an elongate grip sleeve there are provided at the rearward end of the grip sleeve coupling elements for the connection of the handpiece to a supply hose to be connected with a dental supply arrangement, and there are provided at the forward end of the grip sleeve a head section with a tool receiver for mounting a tool to be put into rotation. The handpiece further has an electric motor for driving a tool held by the tool receiver, which motor is completely integrated into the grip sleeve such that grip sleeve and motor form a unit.Type: GrantFiled: July 11, 2011Date of Patent: July 16, 2013Assignee: Kaltenbach & Voight GmbHInventors: Bernhard Kuhn, Bernd Gugel
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Publication number: 20130101958Abstract: A novel apparatus is provided for moving tools used in surgery, in particular in dental surgery. The apparatus includes a head into which a tool is attached and a shaft onto which the head is attached, characterized in that said apparatus also includes a means for transmitting the movement of a motor to the tool, the transmission means including a first transmission axis, for transmitting a first movement at a first frequency, and a second transmission axis, for transmitting a second movement at a second frequency, the first frequency being different from the second frequency.Type: ApplicationFiled: January 18, 2011Publication date: April 25, 2013Applicant: MICRO MEGA INTERNATIONAL MANUFACTURESInventor: Philippe Garcia
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Publication number: 20130052611Abstract: A coupling device between a motor and a handpiece for dental or surgical use. An electric motor includes a nozzle for coupling to the surgical or dental handpiece, and the ratio between the length of the coupling nozzle and the external diameter of the coupling nozzle set by ISO standard 3964-1982 is between 1.8 and 2.5. The handpiece for surgical or dental use is adapted to receive the shortened coupling nozzle of the electric motor. An assembly can be formed by the handpiece and the electric motor of this type.Type: ApplicationFiled: May 10, 2011Publication date: February 28, 2013Inventors: Edgar Schoenbaechler, Didier Siegenthaler
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Patent number: 8333588Abstract: There is disclosed a medical or dental hand-piece element comprising a coupling mechanism for a detachable connection of the hand-piece element to a drive unit, a tool receptacle that is or can be connected to the hand-piece element, and a drive element for transmitting a driving movement from the drive unit to the tool receptacle so that the tool receptacle can be set into a working movement, wherein the drive element comprises at least one rotatable shaft, and a generator for converting mechanical energy into electric energy, wherein the generator can be driven by the at least one rotatable shaft of the drive element.Type: GrantFiled: January 23, 2008Date of Patent: December 18, 2012Assignee: W&H Dentalwerk Bürmoos GmbHInventors: Stefan Putz, Stephan Rauchenzauner, Norbert Schatz, Karl Schmiedlechner, Hannes Wagner
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Electric motor for use in a dental, dental-medical or dental-technical handpiece and stator therefor
Patent number: 8133053Abstract: In an electric motor for use in a dental, dental-medical or dental-technical handpiece, having a rotatably mounted rotor and a stator surrounding the rotor, the stator is surrounded by a sheathing having an inner sleeve, on the outside of which there are arranged functionally relevant components of the stator, for example stator winding(s), return plates, and/or contact pins, and an outer sleeve embedding the inner sleeve with the functionally relevant components.Type: GrantFiled: March 27, 2008Date of Patent: March 13, 2012Assignee: Kaltenbach & Voigt GmbHInventors: Alexander Klee, Alfons Mader -
Publication number: 20110269101Abstract: The invention relates to an electric-motor arrangement for a medical, in particular dental, hand piece which has a motor housing (2) and a rotor (4) which is arranged in the motor housing (2) so that it can be rotated about an axis (L) via a first bearing (6) and a second bearing (8). A stator (14) is arranged around the rotor (4) in relation to the axis (L). The first bearing (6) is received in a first bearing flange (10), and the second bearing (8) is received in a second bearing flange (12). Both bearing flanges (10, 12) are composed of metal and adjoin the motor housing (2) directly by way of their circumferential faces (101, 121). As a result, running noise and vibrations can be reduced. Moreover, premature wear and/or failure can be prevented.Type: ApplicationFiled: April 22, 2011Publication date: November 3, 2011Applicant: Kaltenbach & Voigt GmbHInventors: Josef Duesing, Alfons Mader, Johann Stempfle
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Publication number: 20110269102Abstract: In a dental, dental-medical or dental-technical handpiece, having an elongate grip sleeve there are provided at the rearward end of the grip sleeve coupling elements for the connection of the handpiece to a supply hose to be connected with a dental supply arrangement, and there are provided at the forward end of the grip sleeve a head section with a tool receiver for mounting a tool to be put into rotation. The handpiece further has an electric motor for driving a tool held by the tool receiver, which motor is completely integrated into the grip sleeve such that grip sleeve and motor form a unit.Type: ApplicationFiled: July 11, 2011Publication date: November 3, 2011Applicant: Kaltenbach & Voigt GmbHInventors: Bernhard Kuhn, Bernd Gugel
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Patent number: 7997899Abstract: In a dental, dental-medical or dental-technical handpiece, having an elongate grip sleeve there are provided at the rearward end of the grip sleeve coupling elements for the connection of the handpiece to a supply hose to be connected with a dental supply arrangement, and there are provided at the forward end of the grip sleeve a head section with a tool receiver for mounting a tool to be put into rotation. The handpiece further has an electric motor for driving a tool held by the tool receiver, which motor is completely integrated into the grip sleeve such that grip sleeve and motor form a unit.Type: GrantFiled: March 7, 2007Date of Patent: August 16, 2011Assignee: Kaltenbach & Voigt GmbHInventors: Bernhard Kuhn, Bernd Gugel
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Publication number: 20110039229Abstract: A dental handpiece with an integrated camera and computer. Computer receives information input by dental professionals and data retrieved from integrated sensors. Computer allows pre-programmed procedural steps and information supplied by dental professional to be stored for later use. Computer transmits camera image, stored information and real-time procedural data to dental professional via attached monitor. Computer assists dental professional in handpiece set-up and procedural steps including feedback as treatment proceeds. Based on data received from the user and sensors, the computer dynamically makes adjustments to the procedural steps as well as handpiece mechanical motion, such as, but not limited to, rotational speed, rotational direction, torque, advance feed rate, and withdraw rate.Type: ApplicationFiled: August 9, 2010Publication date: February 17, 2011Applicant: DISCUS DENTAL, LLCInventor: Steven S. Senia
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Publication number: 20110033817Abstract: The invention provides an instrument and methods for minimally invasive surgical scaling and/or planning procedures, thus reducing patient recovery time. Furthermore, the present invention overcomes the shortcoming in the prior art of inadequately preparing the diseased site or creating an aerosol by providing a device that is more mechanically abrasive by way of utilizing a rotational mechanical action of a plurality of bristles.Type: ApplicationFiled: October 21, 2010Publication date: February 10, 2011Applicant: Warsaw Orthopedic, Inc.Inventor: William F. McKay
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Electric Motor for use in a Dental, Dental-Medical or Dental-Technical Handpiece and Stator Therefor
Publication number: 20100261140Abstract: In an electric motor for use in a dental, dental-medical or dental-technical handpiece, having a rotatably mounted rotor and a stator surrounding the rotor, the stator is surrounded by a sheathing having an inner sleeve, on the outside of which there are arranged functionally relevant components of the stator, for example stator winding(s), return plates, and/or contact pins, and an outer sleeve embedding the inner sleeve with the functionally relevant components.Type: ApplicationFiled: March 27, 2008Publication date: October 14, 2010Applicant: KALTENBACH & VOIGT GMBHInventors: Alexander Klee, Alfons Mader -
Publication number: 20100233651Abstract: In an electric motor for use in a handpiece for dentistry, dental medicine or dental technology, with a rotor held rotatably by a bearing arrangement, and a stator surrounding the rotor, a bearing arrangement has a first bearing located on an end region of the rotor, and a second bearing located on an opposite end region of the rotor, which second bearing is constructed as a movable bearing and is biased in the direction of the first bearing by a spring arrangement. The spring force of the spring arrangement within an operating region is substantially independent of the position of the movable bearing.Type: ApplicationFiled: October 8, 2008Publication date: September 16, 2010Applicant: KALTENBACH & VOIGHT GMBHInventors: Bernhard Kuhn, Alexander Klee, Alfons Mader
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Publication number: 20100209872Abstract: The rotor for an electric motor used with a dental handpiece has a shaft with a rotational axis and a magnet arranged around the rotational axis. A centering element may be rigidly connected to the shaft or constructed as part of the shaft. The centering element presses on the magnet from the outside to center it in relation to the rotational axis of the shaft. The centering element may be pressed or shrunk on to two balancing rings. The balancing rings can be pressed or shrunk on the shaft. This allows precise centering of the magnet with respect to the rotational axis of the shaft to be achieved. The pressure exerted by the centering element on the magnet counteracts centrifugal forces during rotor rotation. Particularly high speeds may be achieved without the surface of the magnet exceeding a critical tensile stress.Type: ApplicationFiled: October 8, 2008Publication date: August 19, 2010Applicant: KALTENBACH & VOIGHT GMBHInventors: Bernhard Kuhn, Alexander Klee, Thomas Classen
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Publication number: 20100190130Abstract: A light-curing dental tool is disclosed that can apply curing light to an in-situ dental composite from variable and controllable directions, without removal of the tool from the patient's mouth. A light guide is rotated by a mechanical or electrical mechanism actuated by the operator's hand while grasping the tool, thereby redirecting the light while remaining within the patient's mouth, and while the operator maintains visual and physical contact with the patient. Rotation speed and direction can be controllable. Light guides can be interchangeable. A fixed or rotatable light guide receptacle can be included, and can be adapted for use with pre-existing light guides. Rotation mechanisms can include gears and/or drive belts. Electrical rotation mechanisms include an electric motor, and can include switches and or buttons. The tool can be powered from an electrical outlet, or by a battery that can be recharged by docking with a base station.Type: ApplicationFiled: September 1, 2009Publication date: July 29, 2010Inventor: Robert J. LaRocque
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Publication number: 20100009312Abstract: A hand-held medical instrument intended to turn a movable tool at high speed, includes a clamping mechanism for fixing the tool, a motor mechanism for the driving rotation of the clamping mechanism and a coupling system (21) for the clamping mechanism with the motor mechanism, the system including a hollow tree (28) inside which the end (20) of the tree of the clamping mechanism is able to slide. The coupling system (21) and the end (20) of the tree of the clamping mechanism are assembled together using a rod fixation in which the pins (26) of the end (20) are held, after turning, by a stop (30) arranged inside the hollow tree (28).Type: ApplicationFiled: August 14, 2007Publication date: January 14, 2010Applicant: BIEN-AIR HOLDING SAInventor: Luc MAITRE
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Publication number: 20090064429Abstract: An oral care appliance, includes a handle portion and attachable to the handle portion. toothbrush is positioned within such as a power toothbrush a head portion which is A driving assembly for the handle portion. The handle portion includes an exterior transparent protective housing which satisfies conventional environmental and consumer tests and requirements, and an interior sleeve member adapted to receive the driving assembly and which fits within the transparent housing and is visible therethrough. The interior sleeve member is clearly differentiated from other sleeve members by means of a visual component, such as color or surface texture, thus providing a ready differentiation between otherwise similar or the same toothbrushes.Type: ApplicationFiled: June 27, 2005Publication date: March 12, 2009Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.Inventors: Scott E. Hall, Craig K. Black, Simon J. Lamason
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Publication number: 20090053668Abstract: The present invention is a system for performing a dental procedure that reduces or eliminates particulates produced during the procedure from being deposited in the mouth of the patient or about the area where the dental procedure is performed. This system comprises, an enclosed dental dam having a semi-rigid upper ring, lower ring and semi-flexible dome. The semi-rigid upper ring has a snap connector along its interior perimeter edge and a first radially outward extending lip along its top side. Then semi-rigid lower ring has a snap connector able to be received by the interior perimeter edge of the semi-rigid upper ring for holding a flexible sheet having an aperture for sealing about a tooth and a second radially outward extending lip. When the upper and lower rings are connected the first and second radially outward extending lips form a snap fit adapter.Type: ApplicationFiled: August 22, 2007Publication date: February 26, 2009Inventor: Young K. Kim
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Publication number: 20090023108Abstract: A dental handpiece (10) has a rotor (15) and a ball bearing assembly (14) supporting the rotor (15). The ball bearing assembly (14) has at least one ball (22). The bearing (14) has an inner (20) and an outer race (21), and the outer race (21) has an increased outer diameter.Type: ApplicationFiled: September 19, 2008Publication date: January 22, 2009Inventors: Eugene J. Novak, Tom Papanek, Mikhail Ayzenshetyn
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Publication number: 20090004622Abstract: In a dental, dental-medical or dental-technical handpiece, having an elongate grip sleeve there are provided at the rearward end of the grip sleeve coupling elements for the connection of the handpiece to a supply hose to be connected with a dental supply arrangement, and there are provided at the forward end of the grip sleeve a head section with a tool receiver for mounting a tool to be put into rotation. The handpiece further has an electric motor for driving a tool held by the tool receiver, which motor is completely integrated into the grip sleeve such that grip sleeve and motor form a unit.Type: ApplicationFiled: March 7, 2007Publication date: January 1, 2009Applicant: Kaltenbach & Voight GmbHInventors: Bernhard Kuhn, Bernd Gugel
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Publication number: 20080305455Abstract: An elongated flexible power transmission cable couples an electric motor within a control unit with a dental handpiece. The handpiece has a rotatable tool used for performing dental work within a patient's mouth. The power transmission device comprises a generally flexible and elongated cover having a proximal attachment end, a distal attachment end and a longitudinal axis that extends between the proximal and distal attachment ends. The proximal attachment end is mountable to the control unit and the distal attachment end is mountable to the dental handpiece. A generally flexible and elongated driving cable is rotatably positioned within the cover. The driving cable is generally rotatable about the longitudinal axis and has a proximal end for coupling with the electric motor and a distal end for coupling with and driving the dental handpiece.Type: ApplicationFiled: June 6, 2008Publication date: December 11, 2008Applicant: DENTALEZ, INC.Inventor: William Guscott
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Publication number: 20080254404Abstract: The invention concerns a system (1) for managing rotary cutting tools (2,2a,2b. . . ) mounted on a motor-driven appliance (7) receiving and driving the rotary cutting tools designed to manage dentist's files comprising mainly: first identifying means (6, 8) for identifying the cutting tools, means for recording (8) reference data of each cutting tool identified by the first identifying means (6,8), means (9a, 9b) for transmitting preprogrammed values of the cutting tool to the motor-driven appliance (7), means (9a, 9b) for transmitting measurements of the operating conditions of the cutting tools from the motor-driven appliance (7) to recording means (8), means for evaluating the fatigue of the cutting tools, a computing device (12) adapted to compute a fatigue level of the cutting tools based on the reference data recording means (8) and the evaluating means.Type: ApplicationFiled: October 12, 2007Publication date: October 16, 2008Applicant: XELYXInventor: Roger Heraud
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Publication number: 20080213722Abstract: A handpiece, in particular for medical, dental-medical or dental-technical purposes, has a drive mechanism for a tool to be held by the handpiece, wherein moving or movable parts of the handpiece are provided at least partly with a coating, which is chromium nitride and/or titanium nitride+gold.Type: ApplicationFiled: May 17, 2006Publication date: September 4, 2008Inventor: Rainer Hofer
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Publication number: 20070275349Abstract: A dental handpiece includes a body having a first portion and a second portion, the first and second portions disposed at an ergonomic angle to each other. A drive gear extends from the second portion toward the first portion. The drive gear has a first axis of rotation and rotatably drives at least one driven gear having a second axis of rotation. The at least one driven gear is operatively connected to a bur disposed in the first portion to rotatably drive the bur about a third axis of rotation. The drive gear and the at least one driven gear do not include a taper gear or a face gear.Type: ApplicationFiled: May 26, 2006Publication date: November 29, 2007Applicant: DENTSPLY INTERNATIONAL INC.Inventor: Zdzislaw W. Korytkowski
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Patent number: 6964076Abstract: In one aspect, the present invention is directed to an electric toothbrush. The toothbrush includes a housing, an electric motor, a first transmission and a second transmission. The electric motor is connected to the housing has a motor output member for rotation about a motor output axis. The first transmission is connected to the housing, and converts rotational movement from the motor output member into rotational reciprocating movement at a first average angular speed. The second transmission is linked to the first transmission, and converts rotational reciprocating movement from the first transmission into rotational reciprocating movement at a second average angular speed about a second transmission output axis that is parallel to the motor output axis. The second transmission drives an output member to reciprocate at the second average angular speed about the second transmission output axis. A brush head is removably connectable to the output member.Type: GrantFiled: April 13, 2004Date of Patent: November 15, 2005Inventor: Qingping Zhuan
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Patent number: 6902337Abstract: A dentifrice dispensing electrical toothbrush using a replaceable dual-channel brush head. The dual-channel brush head has a first channel for housing a drive shaft for bristle oscillation and a second channel for dispensing the dentifrice material. The brush head is mounted on the dual-channel connector of the brush handle which contains a drive mechanism and a pumping mechanism that dispenses dentifrice material from a cartridge in the handle. A manual dispensing configuration uses an external rubber button and an electrical dispensing configuration uses a rotary solenoid for actuating an internal rubber button that applies pumping pressure to the dentifrice material. The latter benefits arthritis sufferers, as no external squeezing action is required.Type: GrantFiled: June 23, 2004Date of Patent: June 7, 2005Inventor: Youti Kuo
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Patent number: 6721986Abstract: In one aspect, the present invention is directed to an electric toothbrush. The toothbrush includes a housing, an electric motor, a first transmission and a second transmission. The electric motor is connected to the housing has a motor output member for rotation about a motor output axis. The first transmission is connected to the housing, and converts rotational movement from the motor output member into rotational reciprocating movement at a first average angular speed. The second transmission is linked to the first transmission, and converts rotational reciprocating movement from the first transmission into rotational reciprocating movement at a second average angular speed about a second transmission output axis that is parallel to the motor output axis. The second transmission drives an output member to reciprocate at the second average angular speed about the second transmission output axis. A brush head is removably connectable to the output member.Type: GrantFiled: June 28, 2001Date of Patent: April 20, 2004Inventor: Qingping Zhuan
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Publication number: 20030207233Abstract: 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.Type: ApplicationFiled: April 28, 2003Publication date: November 6, 2003Inventors: Bernhard Lingenhole, Eugen Eibofner, Bernhard Kuhn
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Publication number: 20030190583Abstract: 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.Type: ApplicationFiled: April 28, 2003Publication date: October 9, 2003Inventor: Bernhard Kuhn
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Publication number: 20030175654Abstract: A dental handpiece (10) has a rotor (15) and a ball bearing assembly (14) supporting the rotor (15). The ball bearing assembly (14) has at least one ball (22).Type: ApplicationFiled: January 29, 2003Publication date: September 18, 2003Applicant: DENTSPLY Research & Development Corp.Inventors: Eugene J. Novak, Tom Papanek, Mikhail Ayzenshetyn
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Patent number: 6616446Abstract: The invention concerns an electric drive device for medical applications, especially for driving drills, cutting instruments and screw drivers. Such endo-instruments have predetermined working rotation areas and comprise maximally permissible torque load limits according to the materials thereof. The drive device is equipped with a stepping motor in order to avoid exceeding the torque load limits. The stepping motor disconnects when the maximum torque limit of the stepping motor is fixed below the torque load limit of the instrument. In order to precisely set the torque load limit, a calibration is carried out within the limits of a no-load operation during which the efficiency of the driving shaft up to the instrument is detected, and with it, the value of the current is determined for a zero torque.Type: GrantFiled: January 7, 2000Date of Patent: September 9, 2003Inventor: Heribert Schmid
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Patent number: 6582405Abstract: An electrically-driven dental injector used in orally injecting such an injection liquid as an anesthetic in dental treatment. Electrically-driven dental injectors includes one having a mechanism for disengaging a pinion (82) from a rack (48) in order to retract a plunger rod (44) upon completion of injection; however, it has heretofore been necessary to manually operate the operating part from outside each time. The inventive electrically-driven dental injector is so arranged that the plunger rod can be manually pushed back directly oupon completion of injection without requiring manual operation, and, to this end, the injector comprises a latch mechanism (84) for engaging/disengaging the ring gear (70) of a planetary reduction gear (50) with/from a casing (52), and an operating rod (94) extending through a support member (20) and functionally cooperating with the latch mechanism (84).Type: GrantFiled: May 7, 2001Date of Patent: June 24, 2003Assignees: Showa Yakuhin Kako Co., Ltd., Hios Inc.Inventors: Yukio Kawagishi, Fumio Tanaka, Mutsumi Shibuya, Ikuo Kitagawa, Renji Hayashi, Yoshinori Katoh
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Publication number: 20030068596Abstract: A dental unit comprises at least one chair, a base, positioned next to the chair and mounting a handpiece tray. The tray is equipped with a plurality of operative or auxiliary handpieces for dental operations of traditional conservative type and/or for implants. At least one of the handpieces is fitted with a drive unit consisting of a brushless micromotor presenting a unit for continuously controlling the speed of the brushless micromotor according to parameters that depend on the type of application, that is, traditional, conservative type operations or implants.Type: ApplicationFiled: October 4, 2002Publication date: April 10, 2003Applicant: CASTELLINI S.p.A.Inventor: Franco Castellini
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Publication number: 20020168612Abstract: A dental handpiece (10) has a rotor (15) and a ball bearing assembly (14) supporting the rotor (15). The ball bearing assembly (14) has at least one ball (22). The bearing (14) has an inner (20) and an outer race (21), and the outer race (21) has an.Type: ApplicationFiled: February 25, 2002Publication date: November 14, 2002Inventors: Eugene J. Novak, Tom Papanek, Mikhail Ayzenshetyn
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Patent number: 6446294Abstract: An electric toothbrush is provided which includes an elongate body having an interior cavity, a power source mounted within the cavity, an elongate drive shaft driven rotatably by the power source, a camwheel mounted on the drive shaft, a yoke with projecting arms which confine travel of the camwheel, a crankshaft section driven by the drive shaft, an output shaft axially aligned to the drive shaft, and a collar with a guide track eccentrically coupling the crankshaft section to the output shaft thereby imparting both lateral and rotary reciprocating motion to the output shaft. A brushhead mounted on the front end of the elongate body accepts the motion from the output shaft. The mechanical drive system is fully enclosed within the housing of the elongate body. Brushheads are replaceably mountable outside the cavity on the front end.Type: GrantFiled: December 9, 1999Date of Patent: September 10, 2002Assignee: Unilever Home & Personal Care USA, division of Conopco, Inc.Inventor: Paul Bernhardt Specht
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Publication number: 20020123021Abstract: A dental handpiece (10) of the type having at least one component (11) fabricated from an elastomeric material, is improved by fabricating the component (11) from a perfluoroelastomer.Type: ApplicationFiled: March 25, 2002Publication date: September 5, 2002Applicant: DENTSPLY Research & Development Corp.Inventors: Tom Papanek, Lu He, Amit J. Patel
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Patent number: 6425761Abstract: A drive system for dental handpieces, having a rotor (12) secured to a motor shaft (11), an anti-friction bearing system (13, 14), including an inner bearing race (17), an outer bearing race (18) and a plurality of rolling elements (19) arranged between the bearing races, and a coupling element (16) for coupling thereto a dental instrument (1) that is to be driven, the rolling elements consisting of a non-electroconductive material.Type: GrantFiled: November 22, 2000Date of Patent: July 30, 2002Assignee: Kaltenbach & Voigt GmbH Co.Inventor: Eugen Eibofner
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Publication number: 20020072036Abstract: A dental handpiece (10) has a rotor (15) and a ball bearing assembly (14) supporting the rotor (15). The ball bearing assembly (14) has at least one ball (22). The bearing (14) has an inner (20) and an outer race (21), and the outer race (21) has a thickened diameter.Type: ApplicationFiled: September 13, 2001Publication date: June 13, 2002Inventors: Eugene J. Novak, Tom Papanek, Mikhail Ayzenshetyn