GB847262A - Improvements in or relating to a gas driven turbine or cartridg unit for a dental handpiece and the handpiece for such a unit - Google Patents
Improvements in or relating to a gas driven turbine or cartridg unit for a dental handpiece and the handpiece for such a unitInfo
- Publication number
- GB847262A GB847262A GB27269/57A GB2726957A GB847262A GB 847262 A GB847262 A GB 847262A GB 27269/57 A GB27269/57 A GB 27269/57A GB 2726957 A GB2726957 A GB 2726957A GB 847262 A GB847262 A GB 847262A
- Authority
- GB
- United Kingdom
- Prior art keywords
- air
- turbine
- tube
- rotor
- bore
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
- F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
- F16C19/06—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C1/00—Dental machines for boring or cutting ; General features of dental machines or apparatus, e.g. hand-piece design
- A61C1/02—Dental machines for boring or cutting ; General features of dental machines or apparatus, e.g. hand-piece design characterised by the drive of the dental tools
- A61C1/05—Dental machines for boring or cutting ; General features of dental machines or apparatus, e.g. hand-piece design characterised by the drive of the dental tools with turbine drive
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/54—Systems consisting of a plurality of bearings with rolling friction
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2316/00—Apparatus in health or amusement
- F16C2316/10—Apparatus in health or amusement in medical appliances, e.g. in diagnosis, dentistry, instruments, prostheses, medical imaging appliances
- F16C2316/13—Dental machines
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Mechanical Engineering (AREA)
- Epidemiology (AREA)
- Dentistry (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
Abstract
847,262. Dental engines. DENTISTS'SUPPLY CO. OF NEW YORK. Aug. 29, 1957 [Jan. 18, 1957; Aug. 22, 1957 (2)], No. 27269/57. Class 81(2) [Also in Groups XXVI and XXXIV] The burr or tool 116, Fig. 4, of a dentists' handpiece is driven by a miniature air turbine housed in a head 28 obout 0À5 inch long and 0À375 inch outside diameter and carried by a metal tube 82 inserted in a handle 24. The turbine comprises a rotor 36, Fig 5, having integral blades 86 and upper and lower collars 74, 76 which serve to space the air-cooled ball bearings 38, 52 supporting the rotor. The outer race 42 of the lower bearing fits into a recess in the head 28 and is held in place by a threaded ring 48 having, in addition to its control bore, air outlet ports 134, while the outer race 58 of the upper bearing is a press fit in a flanged collar 60 held in place by a cap 62 screwed into the head and having an air outlet 78. The inner races of the bearings are press fits on the rotor 36 which has a threaded bore containing a plain nylon sleeve 114 the outer surface of which is pressed into the thread of the bore by the insertion of the shank of the tool 116. The turbine is driven by compressed air supplied through a tube 96 seated in a recess 82, Figs. 10, 11, in a plug 84 at the end of the tube 82 and communicating with an eccentrically disposed bore 86 which directs a tangential jet of air on to the turbine blades, the air being exhausted mainly through an axial slot 88 in the plug into the lower end of the tube 82 which is closed by a disc 100 having an air outlet port 106 which maintains a desired back pressure in the tube. The remainder of the air exhausts through the opening 78 in the cap 62 and inclined ports 80 in the bottom wall of the head after passing through the ball bearings. The air issuing through the ports 80 is directed on to the tool 116 together with a stream of water issuing from a jet tube 92 supplied through a tube 98 sealed in a second bore 90 in the plug 82. In assembling the turbine, the lower bearing is inserted in the housing and the 48 screwed home whereupon the rotor 36, with the upper bearing and the collar 60 mounted thereon, is pushed into the housing so that the rotor extends through the inner race of the lower bearing. The parts are held in place by the cap 62. In a modification, the turbine 218, Figs. 19, 20, its flanged casing 230, the upper and lower bearings, and a flanged collar 228 form a unit that is readily insertable in or removable from the housing. The casing is formed with air inlet and exhaust ports 276, 288 respectively. Numerous modifications in the constructial details of the turbine casing and bearings are described.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US847262XA | 1957-01-18 | 1957-01-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB847262A true GB847262A (en) | 1960-09-07 |
Family
ID=22186840
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB27269/57A Expired GB847262A (en) | 1957-01-18 | 1957-08-29 | Improvements in or relating to a gas driven turbine or cartridg unit for a dental handpiece and the handpiece for such a unit |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB847262A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1286688B (en) * | 1961-09-21 | 1969-01-09 | Siemens Ag | Method of making a dental handpiece |
GB2207195A (en) * | 1987-07-22 | 1989-01-25 | G C Dental Ind Corp | Turbine driven dental tool |
WO2003083266A1 (en) * | 2002-03-28 | 2003-10-09 | Dentsply International Inc. | Method for balancing the rotating turbine element of a dental handpiece |
US20160213446A1 (en) * | 2013-09-04 | 2016-07-28 | Kumar Khandelwal MOHIT | A finger mountable dental hand piece device |
WO2018039663A1 (en) * | 2016-08-26 | 2018-03-01 | Wolf James B | Dental drill tool |
-
1957
- 1957-08-29 GB GB27269/57A patent/GB847262A/en not_active Expired
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1286688B (en) * | 1961-09-21 | 1969-01-09 | Siemens Ag | Method of making a dental handpiece |
GB2207195A (en) * | 1987-07-22 | 1989-01-25 | G C Dental Ind Corp | Turbine driven dental tool |
GB2207195B (en) * | 1987-07-22 | 1992-01-15 | G C Dental Ind Corp | Dental chuckless handpiece |
WO2003083266A1 (en) * | 2002-03-28 | 2003-10-09 | Dentsply International Inc. | Method for balancing the rotating turbine element of a dental handpiece |
US20160213446A1 (en) * | 2013-09-04 | 2016-07-28 | Kumar Khandelwal MOHIT | A finger mountable dental hand piece device |
US9730767B2 (en) * | 2013-09-04 | 2017-08-15 | Kumar Khandelwal MOHIT | Finger mountable dental hand piece device |
WO2018039663A1 (en) * | 2016-08-26 | 2018-03-01 | Wolf James B | Dental drill tool |
US10350026B2 (en) | 2016-08-26 | 2019-07-16 | James B. Wolf | Dental drill tool |
US11051909B2 (en) | 2016-08-26 | 2021-07-06 | James B. Wolf | Dental drill tool |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3175293A (en) | Dental handpiece | |
US3324553A (en) | Dental handpiece | |
GB847262A (en) | Improvements in or relating to a gas driven turbine or cartridg unit for a dental handpiece and the handpiece for such a unit | |
GB1018684A (en) | Improvements in or relating to air driven turbines | |
GB1281983A (en) | Improvements in or relating to dental angle handpiece heads | |
GB869672A (en) | Improvements in or relating to high-speed angle-handpieces for dental purposes | |
GB1169873A (en) | Improvements in or relating to Dental Handpieces | |
US3469318A (en) | Dental handpiece instrument | |
US4353697A (en) | Dental handpiece and a connecting means thereof | |
US2891312A (en) | Combined bearing and turbine element | |
US3778904A (en) | Cooling system for a dental handpiece | |
GB851110A (en) | Improvements in or relating to a dental handpiece having a turbine for driving a dental tool | |
US3255527A (en) | Air driven dental handpieces | |
GB1029681A (en) | Improvements in or relating to dental handpieces | |
US3060581A (en) | Dental handpiece with removable turbine-and-bearing assembly and liquid cooled burr | |
CN113491589A (en) | Airflow suspension movement assembly for high-speed turbine dental handpiece and dental handpiece | |
GB875576A (en) | Improvements in or relating to dental apparatus | |
CN215458792U (en) | Airflow suspension movement assembly for high-speed turbine dental handpiece and dental handpiece | |
USRE28390E (en) | Air driven dental handpieces | |
SU1734720A1 (en) | End point of drilling machine | |
GB848540A (en) | Improvements in or relating to dental handpieces having a head enclosing a compressed air turbine for driving a dental tool | |
GB913106A (en) | Improvements in or relating to dental handpieces having an air turbine for driving adental tool | |
RU12521U1 (en) | MICROMOTOR DENTAL PNEUMATIC REVERSE | |
GB920096A (en) | Improvements in or relating to dental handpieces | |
GB902220A (en) | Improvements in or relating to dental handpieces |