DE1864407U - DENTAL HAND PIECE OR ANGLE PIECE WITH DRIVE MOTOR. - Google Patents

Description

Albert Prüfer, dentist
Seulingen over Duderstadt

Dental .drill

The invention relates to a dental drill. Such devices are known as stationary systems and thereby with a electric drive and a corresponding gear. The drill is stored with its putter in one hand or Elbow, which in turn can be connected to a collapsible boom of the device. As a transportable Devices are also known to have devices that are equipped with a puss drive. All the known devices have the defect poor portability. They are bulky and complicated in structure and therefore in their acquisition expensive. Because of the means of transmission used, such as cords,

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Cardan shafts, etc. between the drive motor and the handpiece or contra-angle handpiece or «, drill chucks are the very well-known facilities prone to failure.

All of these deficiencies are remedied by the invention according to the invention the drill drive directly on which the drill chuck carrying handpiece or angle piece is attached.

The drill drive can preferably be formed from a high-speed low-current electric motor, for example is operated as a DC motor with a low voltage, about 4.5 volts and a speed of 25,000 revolutions. Such a motor has only a very low weight and can be housed in a housing, which with simple Means can be attached to the handpiece or contra-angle. on

the motor shaft is fitted with a plug-in or claw coupling, s

with the corresponding coupling piece on which the drilling j

lining driving shaft cooperates. j

Either a battery is used as the power source for the motor, j an accumulator or a mains connection in question. The battery or the accumulator can be easily exchanged directly on the handpiece or angle piece or on the housing of the electric motor sit or there is a special derivation for this

βΡ 30b, 1/02. 1S64407. Albert Prüfer,

Si Seulingen about Üuderstidt. I dentist 07 40 ζ *)

f liches hand or we.kc'.slück with an * - ' ^{i / LOi}

traction motor. 27. P. 60 ΡΙ7Π5. (T. S;

Line 3)

for use so that the attending physician has the opportunity to carry the power source with him in a pocket, or, for example, to buckle up as a bracelet and releasably connect it to the drive motor with a cable.

When using a mains connection, a junction box is expediently used, which has a transformer, a rectifier and, if necessary, an adjustable resistor for setting a desired speed records.

The handling of the device is extremely simple because it is completely independent of any larger system. It is easily installed and Power off TBAR by a correspondingly arranged spring-loaded switch is provided, with which the hand or elbow or hand holding a pinger is operated thereof _β

The idea of the invention, which also allows other possible embodiments, is shown in the attached drawing reproduced, namely show:

30b, 1/02. _ 1864 407. Albert auditor Seuiineen ahout Γ) μπ "μ ^ ϊλο" -] / dentist O "7 lid""" Handpiece with on ^Z '■ drive motor. 27. S. 60. "17113. (T. S;

z. 3) ';

Pig. 1 is a perspective view of a dental machine equipped with the power motor Elbow,

Fig. 2 shows the rear end of the same angle piece with the motor disconnected,

Pig. 3 a possible arrangement for the battery,

4 shows a perspective illustration of the handling of the device,

Yy'ig. 5 a circuit diagram for an example for use incoming power supply unit.

The angle piece 1 receives the chuck for the tool 3 in its head 2. Inside is the drive shaft for the drill chuck, in which drills, milling tools, grinding or polishing disks or the like can be attached in the usual way are.

At the rear end of the elbow is usually located the coupling neck 4 with which the elbow can be attached to the engine of a drill.

According to the invention, the electric motor 5 with the connecting pin 6 can be attached in this coupling neck 4. On the engine

30b, 1/02. IS64 4O7. Albert Prüfer, SeuÜngen via Duderstadt. I dentist's 0 7 Iiches hand or Ti-contra-angle handpiece with ^L ' ^XC drive motor. 8/27/60. P 17113. (T. 8;

Z- 3) __ _r

shaft sits a claw clutch 7 or the like, which with the mating coupling of the drill drive shaft engages «, the resilient detent 8 puts the parts in the coupling position held.

In the arrangement according to Figure 3 sit on the housing of the Electric motor 5 connector pin 9, to which the battery 1o is to be plugged with the help of sockets 11 »

In the embodiment according to FIGS. 1 and 2, the motor is Connected via a detachable cable 12 to a battery 13, for example with the help of a bracelet H can be carried by the hand. Of course, all other possible arrangements for the Battery given.

A direct current motor can be used as the drive motor, for example, which operates at a speed of 25,000 revolutions per minute and an operating voltage of 4, t> volts has. For switching it on and off of the electric circuit can, for example, be the one in Ji'igur 1 drawn resilient switch 15, 16 are used, which is attached directly to the handpiece or angle piece and can be operated with the hand holding the device while working.

Claims (4)

30b, 1/02. 1S64 4O7. Aibcrt Prüfer, Seuiingen via Duderstadt. \ Dental handpiece or contra-angle handpiece with A-L 'drive motor. 8/27/60. P 17115. (T. 8; line 3) __ If the motor 5 is operated by means of a mains connection, a switch box is expediently used, which can be connected to the lighting network via the lines 17 and inside the switch 18, a fuse 19 , a transformer 2o, a rectifier 21 and finally a controllable resistor 22 for speed regulation «This additional device, like the contra-angle handpiece equipped with the drill, can be carried along very easily, so that the attending physician is completely independent of the conventional systems. The most varied possible variations are possible without the invention being restricted to the embodiment shown. Protection claims: -4-1- on which the chuck-carrying hand or wink ^ -liiück is set off, thereby gekeq ^ ptkom ^^ d ^ ss the drive motor is a hochtoujgCier SphHrachstrom electric motor, whose current ^ Jö & ß ^ -SCus one directly on Hand or angle piece, or formed on the housing of the electric motor 5n battery or an accumulator ^ -—— -, lbert prefc-, Seulingcn via Dudcrstedt. } Dentist- O 7 *. »Liolics H-nd or Elbow aiii An L 'l B drive motor. 8/27/60. Pi "II3. (T. S; Ii 2. 5) ί PATENTANWALT. RUD. BIBRACH 34 Qötttngen, October 29, 19i 34 Qöttingen Qroner Strasse 35 / Telephone 5 78 23 Postsdiedckonto: Hanover 115703 Bank details: Peulsdie Bank QStttngen L Zelten. 5173 B / D your reference: File number: P 17 113 / 30b Gm Applicant: Albert Prüfer Protection claims: 1. Dental drill, characterized by a directly attached to the usual, the drill chuck carrying Handpiece or contra-angle handpiece attachable, working with a low-voltage motor, on which a drive part located in the electrical circuit of the electric motor resilient on and off switch is built in such a way that it can be used without difficulty when grasping the elbow can be operated with the same hand " 2. Dental drill according to claim 1, characterized in that the drive motor is a high-speed Low-voltage electric motor is whose power source is off 30b, 1/02. 1864407. Albert Prüfer, Seulingen via Duderstact. | Dentist O ~) royal hand or elbow with on ^length - drive motor. 27. P. 60. P 17113. (T. 8; line 3) 2 - a battery or a battery mounted directly on the handpiece or contra-angle handpiece or on the housing of the electric motor Accumulator is formed. 3. Dental drill according to claim 1 and 2, characterized in that the power source from the hand or Contra-angle handpiece or motor spatially separated with a suitable holding device (bracelet, clip, hook or The like.) is provided and releasably connected to the motor by a cable. 4. Dental drill according to claim 1 to 3, characterized in that the drive part or in one A potentiometer for regulating the speed of the drive motor is housed in a separate switch box is.