EP 1088352 A1 20010404 - RESONANT PIEZOELECTRIC ALERTING DEVICE
Title (en)
RESONANT PIEZOELECTRIC ALERTING DEVICE
Title (de)
RESONANTE PIEZOELEKTRISCHE WARNVORRICHTUNG
Title (fr)
DISPOSITIF D'AVERTISSEMENT PIEZOELECTRIQUE RESONANT
Publication
Application
Priority
- US 9909241 W 19990428
- US 8730998 A 19980529
- US 8755898 A 19980529
Abstract (en)
[origin: WO9963604A1] A resonant piezoelectric alerting device (600) includes a motional mass (130) and a piezoelectric actuator (100) constrained to an actuator mount (132) at a first end and coupled to the motional mass (130) at a second end. The piezoelectric actuator (100) responds to a control signal (108, 110) to generate an alternating out-of-plane movement (812, 814) of the motional mass (130) having an amplitude (412, 414). The alternating out-of-plane movement (812, 814) of the motional mass (130) is transformed into tactile energy to provide a tactile alert about a resonant frequency (608). The resonant piezoelectric alerting device further includes a damping element (136, 156) magnetically coupled to the motional mass (130). The amplitude (412, 414) is controlled by the damping element (136, 156). The alternating out-of-plane movement (812, 814) of the motional mass (130) is also transformed into acoustic energy to provide an audible alert above the resonant frequency (608).
IPC 1-7
IPC 8 full level
G10K 9/122 (2006.01); G04G 13/02 (2006.01); H01L 41/09 (2006.01)
CPC (source: EP KR)
G04G 13/021 (2013.01 - EP); G10K 9/122 (2013.01 - KR)
Citation (search report)
See references of WO 9963604A1
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
WO 9963604 A1 19991209; CN 1303522 A 20010711; EP 1088352 A1 20010404; JP 2002517907 A 20020618; KR 20010052439 A 20010625
DOCDB simple family (application)
US 9909241 W 19990428; CN 99806807 A 19990428; EP 99924123 A 19990428; JP 2000552724 A 19990428; KR 20007013453 A 20001129