EP 0960340 A1 19991201 - ACCELEROMETER SENSOR FOR DETECTING KNOCKS AND METHOD FOR MAKING SAME
Title (en)
ACCELEROMETER SENSOR FOR DETECTING KNOCKS AND METHOD FOR MAKING SAME
Title (de)
BESCHLEUNIGUNGSSENSOR ZUR KLOPFDETEKTION UND VERFAHREN ZU SEINER HERSTELLUNG
Title (fr)
CAPTEUR ACCELEROMETRIQUE DE CLIQUETIS ET SON PROCEDE DE FABRICATION
Publication
Application
Priority
- EP 9800424 W 19980126
- FR 9701677 A 19970213
Abstract (en)
[origin: FR2759458A1] The invention concerns a sensor comprising a) a cylindrical base (1) formed by an axial shaft (2) projecting from a ring-shaped collar (3), both traversed by an axial bore (4); b) a washer (6) made of piezoelectric material passing on the shaft; c) means for sampling (71, 72) the voltage prevailing between two radial faces of the washer; d) a ring-shaped mass (9) also passing on the shaft (2); and e) stop means co-operating with the ring-shaped collar (3) for mutually squeezing the washer (6) and said mass (9). The stop means consist of a flange (17) projecting from said shaft (2) and formed of the material of a predetermined section thereof, deformed by the crushing stress of said base (1).
IPC 1-7
IPC 8 full level
G01L 23/22 (2006.01); G01M 15/00 (2006.01); G01P 1/02 (2006.01); G01P 15/09 (2006.01)
CPC (source: EP US)
G01L 23/222 (2013.01 - EP US); G01P 1/023 (2013.01 - EP US); G01P 15/0907 (2013.01 - EP US)
Citation (search report)
See references of WO 9836280A1
Designated contracting state (EPC)
DE ES GB IT
DOCDB simple family (publication)
FR 2759458 A1 19980814; FR 2759458 B1 19990430; EP 0960340 A1 19991201; JP 2000509508 A 20000725; JP 3222146 B2 20011022; US 6212940 B1 20010410; WO 9836280 A1 19980820
DOCDB simple family (application)
FR 9701677 A 19970213; EP 9800424 W 19980126; EP 98905354 A 19980126; JP 53528098 A 19980126; US 36751199 A 19990813