Vibration detecting apparatus
US4574616A · kind A · utility
8Cited by
1References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 30, 1984 |
| Grant date | Mar 11, 1986 |
| Priority date | — |
| Expiry date | Mar 30, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L23/222
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A vibration detecting apparatus comprises a housing having at one end thereof an opening, a piezoelectric element disposed within the housing, a connector mounted to the housing to cover the opening thereof and having an output pin, a lead wire for electrically connecting the piezoelectric element with the output pin, and an initially conical annular spring having an outer peripheral edge portion thereof received by an annular groove formed in an inner peripheral wall of the housing. The piezoelectric element is biased by the initially conical annular spring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.