Matches 1 - 50 out of 177 1 2 3 4 >


Match Document Document Title
8721333 Air-driven rotary cutting tool  
An air-driven rotary cutting tool including a grip part, a head part provided at a distal end of the grip portion, and a rotor of double-wheel type rotatably installed in a hollow portion formed...
8562343 Fluid driven dental handpiece with hydrostatic bearings  
A dental handpiece uses a single airflow input to drive both a rotor and provide a hydrostatic bearing. The fluid flow in the form of compressed air is applied first to the hydrostatic bearings...
8324765 Fluid-operated medical or dental handle with speed limiting  
A fluid-operated medical or dental handle with a device for limiting the rotational speed to a maximum rotational speed value is disclosed. The handle comprises a rotating part that can be induced...
8226363 Turbine wheel for a gas operated medical handpiece and medical handpiece having a turbine wheel, and method for milling a blade of a turbine wheel  
A turbine wheel for a gas operated medical handpiece includes a plurality of blades which extend in radial direction from a hub and extend in axial direction from a side ring web of the turbine...
8210847 Disposable dental handpiece  
A sterile, substantially maintenance free disposable dental handpiece is constructed from two shells and a center core, the center core having a flow deflector on one end. The shells are joined...
8137102 Fluid-operated medical or dental handheld element  
A fluid-operated medical or dental handheld element is disclosed, having a connecting device for connecting the handheld element to a fluid source so that a first impeller can be induced to rotate...
8092217 Suckback prevention device for single use high-speed turbine dental drill handpiece  
A high-speed turbine dental drill handpiece has a drilling needle, a wind wheel axle, a head housing having an annular opening with a two-step profile shape, and a suckback prevention device. The...
7927101 Handpiece and method for preventing occurence of sucking-back in the handpiece  
A handpiece and a method for driving the handpiece are provided in which a sucking-back problem can be prevented with a simple structure. The handpiece 10 has a gripping portion 11 to be gripped...
7811056 Turbine wheel for a gas operated medical handpiece and medical handpiece having a turbine wheel  
A turbine wheel for a gas operated medical handpiece includes a plurality of blades which extend in radial direction from a hub and extend in axial direction from a side ring web of the turbine...
7329123 Air-driven cutting device for medical treatment  
A dental cutting device has a head portion (10) which accommodates a rotary cylinder (20) for holding a cutting tool (22), and a turbine blade (21) mounted around and secured on the rotary...
7217129 Medical or dental-medical handpiece having at least one rotary part  
The invention relates to a medical or dental-medical handpiece having a rotary part, in particular a turbine rotor. In order to improve the handpiece with regard to small construction, running...
7192279 Dental handpiece  
A dental handpiece including a handpiece body with a head mounting seat, with a gas feeding channel, wherewith the seat is adapted to provide a full turn of the head. The head includes a turbine...
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...
7048540 Air-driven cutting device for medical treatment  
A air-driven cutting device for medical treatment (a handpiece (10)) comprises a housing (18) for a head portion (14). The housing (18) accommodates a rotary cylinder (60) for holding a...
7008224 Disposable dental instrument  
A disposable dental instrument of the compressed air drive type is disclosed for use in performing dental procedures on a workpiece. The disposable dental instrument is constructed from two mating...
6790039 Dental turbine support structure  
A support structure for a turbine motor for use in a dental handpiece includes a pair of resilient rings to capture and limit rotation of an outer race of a bearing supporting a rotor of the...
6764307 Polymer-metal composition retainer for self-lubricating bearing  
The retainer of the present invention is made of a composite material having a body made from a polymer, a layer of solid lubricant formed over the body by chemically coating the body with a...
6676374 Air-driven rotating and cutting device for use in medical and dental procedures  
An air-driven rotating and cutting device or handpiece has a double-wheel rotor. The handpiece includes connecting channels for guiding air from first turbine blades to second turbine blades. Each...
6599124 Dental handpiece with angular contact ball bearings  
A dental handpiece is disclosed, which includes a burr sleeve, upper and lower ball bearings for rotatably supporting the burr sleeve, a rotor fixed to the burr sleeve between the upper and lower...
6579093 High speed turbine cartridge for use with a medical/dental handpiece  
A high-speed medical/dental handpiece includes a handle, which carries air, water, and light to a disposable cartridge which is received on the sleeve. The cartridge includes a head portion and a...
6425761 Drive system for dental handpiece  
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)...
6315560 High-speed dental drill  
A high-speed dental drill is comprised of a hand piece having a drill head at an end thereof. A turbine assembly is supported in a turbine chamber inside the drill head. The turbine assembly has a...
6273718 Dental handpiece  
A dental handpiece has a head housing having a turbine chamber and an annular channel. First and second bearings are provided on opposite sides of the turbine chamber in the head housing. An...
6270345 Vane motor for dental and medical handpieces  
An arrangement for driving a rotary dental or medical tool attached to a handpiece includes a vane motor that is compact enough to be mounted within the head of the handpiece. The vane motor...
6270342 Dental laser treatment hand-piece and system  
A handpiece is presented which utilizes fluid channels instead of electric wiring to provide power to a treatment device. These fluid channels operate a micro-turbine generator that provides...
6186784 Autoclavable dental handpiece with disposable high speed turbine  
A high speed dental handpiece (1) of the present invention includes a metal non-disposable body (3) and a plastic disposable cartridge (5, 5', 205, 205', 305, 605) received in the body (3). The...
6164831 Rolling bearing for high-speed rotating equipment  
A rolling bearing for a high-speed rotating equipment is constructed of an outer ring, an inner ring, rolling elements and a retainer to rotatably support at least a rotary shaft thereon. The...
6152736 Dental turbine  
A dental turbine comprises a rotor (10) which is rotatably accommodated in a housing (12), the housing (12) having an outlet opening (23) for propellant air which causes the rotor (10) to rotate....
6149430 Integrally molded dental appliance and process for its manufacture  
The invented dental apparatus and method for its manufacture involves an integrally molded, polymeric, unitary, hand piece having fluid conduits formed therein during the molding process for...
6146137 Contamination prevention device for ultra high speed dental type handpieces  
A gas turbine operated handpiece instrument having a spin able front shaft mounted bur that is operated by pressurized gas or air. Two embodiments are disclosed. In one a flexible rubber like PVC...
6120291 Turbine handpiece  
The invention relates to a turbine handpiece (1), in particular for medical or dental-medical purposes, having a drive shaft (2), rotatably mounted in the forward end region of the handpiece (1),...
5984654 Compressed air driven disposable hand tool having a rotor with radially moving vanes  
A fluid reaction device (10) is provided having a rotor (90) with vanes (92) pivotably connected thereto. The device (10) includes an entrance (30) for elevated pressure fluid and an outlet (40)...
5947485 Collet assembly and manufacturing process  
An Improved Collet Assembly and Manufacturing Process is disclosed. Also disclosed is an improved collet that includes a spindle, a center portion comprising several tabs and a collar. The...
5938441 Air driven low speed dental handpiece motors  
Air driven dental handpiece motors include a tubular housing and a rotor rotatably supported within the housing. One motor is geared down by the provision of a plurality of idler gears rotatably...
5921777 Dental and surgical handpiece with disposable cartridge  
A dental and surgical handpiece with disposable cartridge of the present invention includes a reusable handpiece and a disposable cartridge. The disposable cartridge contains all the major moving...
5911579 Dental handpiece with baffle for stabilizing rolling bearing cage  
A dental handpiece is disclosed which includes: a head housing provided at a distal end of the dental handpiece, a burr sleeve for unrotatably holding a dental treatment tool, upper and lower ball...
5908295 Dental handpiece with lighting means  
A dental handpiece is disclosed, which contains a handpiece body for giving dental treatment on a site in oral cavity of a patient, and an optical semiconductor device in the handpiece body for...
5902108 Air turbine handpiece  
An air turbine handpiece comprises a grip portion and a head portion disposed at a tip of the grip portion. In the handpiece, a rotor is disposed in a chamber in the head portion, and a cutting...
5897317 Dental handpiece with disposable filter cartridge  
Dental drill handpiece having a disposable filter cartridge for cleaning drive air, water, chip air, and exhaust passing through the handpiece.
5846078 Dental angular instrument holder  
In a dental angular instrument holder (10) a turbine (142) for driving a clamping chuck (62) for an instrument (64) is installed in a handle part (12) and is supported on a drive shaft (70)...
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...
5803733 Pneumatic surgical handpiece and method  
A pneumatically powered surgical handpiece suitable for a pencil-type handpiece configuration in which the pressurized fluid inlet is axially directed relative to the handpiece body. Fluid is...
5800171 Exhaust control system for pneumatic devices and method  
An exhaust control system and method are provided for use with one or more pneumatic devices so as to draw contaminated fluid from the fluid outputs of such devices and deposit such contaminated...
5800172 Dental turbine hand piece with light and rotary head  
A dental turbine hand piece has a body, a turbine rotatable in the body about an axis, a light source arranged on the body, and means for current supply to the light source, a magnetic element...
5782634 Medical, in particular dental turbine handpiece  
In a medical, in particular dental turbine handpiece, having a supply line (8) and a discharge line (9) for the turbine compressed air, whereby a valve (12) is arranged in one line, which valve is...
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...
5772436 Odontotherapeutic hand piece  
An odontotherapeutic hand piece is formed of a head portion, a handle portion connected to the head portion and a coupling portion arranged in continuation with the handle portion. A rotary member...
5733120 Dental handpiece capable of stable supporting turbine  
There is provided a dental handpiece capable of stably supporting a turbine during high-speed rotation thereof. A projection is provided at each corner portion of a polygonal end surface of a...
5683248 Autoclaving cap for dental handpieces  
An autoclaving collar having a distal end and a proximate end is presented for fastening to the proximate end of a conventional dental handpiece to protect the impeller of the handpiece from the...
5676542 Medical or dental treatment instrument  
In a medical or dental treatment instrument, in particular a straight or angled handpiece (1), having a drive shaft (6) for a tool, which drive shaft is mounted in the forward end region of the...

Matches 1 - 50 out of 177 1 2 3 4 >