Global Patent Index - EP 1048086 A1

EP 1048086 A1 2000-11-02 - PIEZOELECTRIC DRIVE DEVICE

Title (en)

PIEZOELECTRIC DRIVE DEVICE

Title (de)

PIEZOELEKTRISCHE ANTRIEBSVORRICHTUNG

Title (fr)

DISPOSITIF D'ENTRAINEMENT PIEZOELECTRIQUE

Publication

EP 1048086 A1 (DE)

Application

EP 99953750 A

Priority

  • DE 19845134 A
  • EP 9907484 W

Abstract (en)

[origin: DE19845134A1] The invention relates to a drive device having at least one substantially parallelepiped piezoelectric element and means for generating oscillation of the piezoelectric element in a plane of oscillation (x/y planes), wherein a tappet for exerting an impact force in an impact direction (x direction) is provided on at least one outer surface of the piezoelectric element. In order to improve effectiveness, a single central suspension element is provided inside the piezoelement in the center of the piezoelement that exerts a prestressing force on the piezoelectric element in the direction of impact.

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

H01L 41/09

IPC 8 full level (invention and additional information)

B26B 19/28 (2006.01); G11B 21/02 (2006.01); H01L 41/09 (2006.01); H02N 2/00 (2006.01)

CPC (invention and additional information)

H01L 41/0906 (2013.01)

Citation (search report)

See references of WO 0021145A1

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

DE 19845134 A1 20000406; AU 1033500 A 20000426; CN 1289458 A 20010328; EP 1048086 A1 20001102; JP 2002528021 A 20020827; WO 0021145 A1 20000413

INPADOC legal status


2002-02-27 [18W] WITHDRAWN

- Ref Legal Event Code: 18W

- Date of withdrawal: 20011219

2000-12-13 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20001013

2000-11-02 [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