Vibration detecting device
US4869095A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 26, 1988 |
| Grant date | Sep 26, 1989 |
| Priority date | — |
| Expiry date | Sep 26, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L23/222
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A vibration detecting device especially intended for detecting the knocking of an internal combustion engine. Various components inclusive of a piezoelectric element are mounted around a cylindrical portion of a bush with an insulating tube disposed therebetween. An insulating tube fills the space between the cylindrical portion and the components that are arranged to be aligned with the cylindrical portion. The outermost part of the tube serves as a reference surface in arranging the components to be mounted in alignment with the cylindrical portion during assembly, thereby allowing them to be mounted precisely in alignment with the cylindrical portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.