Global Patent Index - EP 1051601 A1

EP 1051601 A1 2000-11-15 - SENSOR FOR CONTACTLESS MEASUREMENT OF TORQUES

Title (en)

SENSOR FOR CONTACTLESS MEASUREMENT OF TORQUES

Title (de)

SENSOR ZUR BERÜHRUNGSLOSEN MESSUNG VON DREHMOMENTEN

Title (fr)

DETECTEUR DE MESURE SANS CONTACT DE MOMENTS DE COUPLES

Publication

EP 1051601 A1 (DE)

Application

EP 99961022 A

Priority

  • DE 19854959 A
  • EP 9909257 W

Abstract (en)

[origin: DE19854959A1] The invention relates to a sensor for contactlessly measuring torques, especially on rotating elements. The sensor is characterised by at least one rotor electrode, which is arranged on the element and rotates with the same. Said rotor electrode has electroconductive, electroconductively interconnected strips which are diagonal to a symmetry element of the rotating element and which are arranged so that they are parallel with each other. The strips are evenly arranged on the rotating element in such a way as to form a periodic pattern, the mutual distance between them vertical to their longitudinal direction being selected in such a way that the electrical stray fields that are formed at their edge almost do not overlap. The sensor is also characterised by a stator electrode which is set apart from the rotor electrode by a gap and which at least partially covers the rotor electrode, and by a device by which means it is possible to measure the capacity of a coupling between the rotor electrode and the at least one stator electrode which is capacitive in pairs and is determined essentially by the electrical stray fields.

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

G01L 3/10

IPC 8 full level (invention and additional information)

G01L 3/10 (2006.01)

CPC (invention and additional information)

G01L 3/10 (2013.01)

Citation (search report)

See references of WO 0033043A1

Designated contracting state (EPC)

DE GB

EPO simple patent family

DE 19854959 A1 20000531; EP 1051601 A1 20001115; WO 0033043 A1 20000608

INPADOC legal status


2004-05-19 [RBV] DESIGNATED CONTRACTING STATES (CORRECTION):

- Ref Legal Event Code: RBV

- Designated State(s): DE GB

2004-03-03 [18W] WITHDRAWN

- Ref Legal Event Code: 18W

- Effective date: 20040113

2003-10-15 [17Q] FIRST EXAMINATION REPORT

- Ref Legal Event Code: 17Q

- Effective date: 20030901

2000-11-15 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20000726

2000-11-15 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

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