Global Patent Index - EP 1086499 A1

EP 1086499 A1 2001-03-28 - DRIVE DEVICE

Title (en)

DRIVE DEVICE

Title (de)

ANTRIEBSVORRICHTUNG

Title (fr)

DISPOSITIF D'ENTRAINEMENT

Publication

EP 1086499 A1 (DE)

Application

EP 00903616 A

Priority

  • DE 19903484 A
  • DE 19905191 A
  • DE 19937209 A
  • EP 0000495 W

Abstract (en)

[origin: WO0045444A1] The invention relates to a drive device. Piezo actuators (4) are driven by an oscillating circuit and move the mechanical drive components. Said piezo actuators (4) and said drive components form a first spring-mass system which is caused to oscillate by the piezo actuators (4) at a first natural frequency. The drive components drive a second spring-mass system (1, 2) that is provided with a second natural frequency which is smaller than the first natural frequency. The second natural frequency determines an envelope curve of the same frequency during which the piezo actuators (4) are driven by the first natural frequency. The piezo actuators (4) are switched on when the mass (1) of the second spring-mass system (1, 2) interacts mechanically with the drive components of the second spring-mass system.

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

H01L 41/04; H01L 41/09

IPC 8 full level (invention and additional information)

B06B 1/06 (2006.01); H01L 41/04 (2006.01); H01L 41/09 (2006.01); H02N 2/04 (2006.01)

CPC (invention and additional information)

H02N 2/067 (2013.01); H02N 2/002 (2013.01)

Citation (search report)

See references of WO 0045444A1

Designated contracting state (EPC)

DE FR IT

EPO simple patent family

WO 0045444 A1 20000803; WO 0045444 A8 20010405; AU 2543400 A 20000818; CN 1300447 A 20010620; DE 19937209 A1 20000810; EP 1086499 A1 20010328; JP 2002536146 A 20021029

INPADOC legal status


2004-05-12 [RBV] DESIGNATED CONTRACTING STATES (CORRECTION):

- Designated State(s): DE FR IT

2003-03-05 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20020801

2001-04-04 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20010201

2001-03-28 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

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