Global Patent Index - EP 1044353 A1

EP 1044353 A1 2000-10-18 - DEVICE FOR DETERMINING A ROTATIONAL SPEED

Title (en)

DEVICE FOR DETERMINING A ROTATIONAL SPEED

Title (de)

VORRICHTUNG ZUR ERMITTLUNG EINER DREHRATE

Title (fr)

DISPOSITIF POUR DETERMINER UNE VITESSE DE ROTATION

Publication

EP 1044353 A1 (DE)

Application

EP 99965356 A

Priority

  • DE 9902116 W
  • DE 19835578 A

Abstract (en)

[origin: DE19835578A1] The invention relates to a device for determining a rotational speed which comprises an oscillating body (11) on which a plurality of electromechanical transducers (A, A', B, B', C, C', D, D') are mounted. At least one first transducer (A, A') is moved in mechanical oscillations by an electric driver signal (UF,O) which is generated in a first circuit (12). In addition, at least one second transducer (D, D') is moved in mechanical oscillations by an electric damping signal (UF,D) which is generated in a second circuit (13). At least one third transducer (C, C') emits an electric sensor damping signal (US,D) which corresponds to the oscillation of the body (11) in the position at which the at least third transducer (D, D') is mounted. The damping sensor signal (US,D) is sent back to the input of the second circuit (13). In addition, a voltage divider (31) is provided with which the signal (UF,D) generated in the second circuit (13) can be reduced.

IPC 1-7 (main, further and additional classification)

G01C 19/56

IPC 8 full level (invention and additional information)

G01C 19/5691 (2012.01)

CPC (invention and additional information)

G01C 19/5691 (2013.01)

Citation (search report)

See references of WO 0008416A1

Designated contracting state (EPC)

CH DE ES FR GB IT LI SE

EPO simple patent family

DE 19835578 A1 20000210; EP 1044353 A1 20001018; JP 2002522753 A 20020723; US 6427518 B1 20020806; WO 0008416 A1 20000217

INPADOC legal status


2005-08-10 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20050201

2004-05-26 [RBV] DESIGNATED CONTRACTING STATES (CORRECTION):

- Ref Legal Event Code: RBV

- Designated State(s): CH DE ES FR GB IT LI SE

2000-10-18 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20000817

2000-10-18 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE