Pièce à main dentaire motorisée munie d'un accessoire électrique tel qu'un éclairage

The accessory e.g. lamp for illumination of the hand-held instrument (L) and the excitation coils (B1-B3) of the brushless motor (M) are all supplied with current through a rotary connector (F) from a control circuit (C1) within a fixed part of the machine or power cable. Positive and negative supply lines (L1, L2) from a voltage source (S) feed three pairs of controlled transistor switches (CE1-CE3) whose midpoints (P1-P3) are wired to terminals (b1-b3) of the star-connected coils. The lamp is fed from a separate controlled switch (T4) wired to one (N1) of its terminals; the other (N2) is returned to the free terminal (b3) of one coil. <IMAGE>


Year:
1999
Note:
FR2720263-A1; EP688539-A1; EP688539-B1; DE69511630-E Cardoletti L. et Perriard V. ne sont pas nommés sur le brevet EP688539-A !!!!
Alternative title(s) : (de) Zahnärtzliches handstück mit einem antrieb und mit elektrischem zubehör, vorzugsweise belichtungsvorrichtung (fr) Pièce à main dentaire motorisée munie d'un accessoire électrique tel que'un éclairage (en) Motorized dental hand piece with electrical accessory such as lighting device
Other identifiers:
EPO Family ID: 9463528
Laboratories:




 Record created 2006-06-15, last modified 2019-11-04


Rate this document:

Rate this document:
1
2
3
 
(Not yet reviewed)