Acceleration detector
US5239869A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 26, 1991 |
| Grant date | Aug 31, 1993 |
| Priority date | — |
| Expiry date | Apr 26, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L23/222
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An acceleration detector comprising a housing adapted to be rigidly secured to an object whose acceleration is to be detected and a transducer assembly disposed within the housing for detecting the acceleration of the housing. The transducer assembly comprises a disc-shaped diaphragm having a circular central region flexible in response to the acceleration of the housing. A disc-shaped piezoelectric element is attached to the central region of the diaphragm for generating a signal representative of the acceleration of the housing. Positioning means are disposed on the diaphragm and the piezoelectric element for positioning the piezoelectric element relative to the central region of the diaphragm. The positioning means may comprise a projection disposed on the diaphragm and engageable with the piezoelectric element. The projection may be disposed at the center of the diaphragm and the piezoelectric element may have a central hole engageable with the positioning projection. The projection may be disposed on the diaphragm and engageable with an outer peripheral edge of the piezoelectric element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.