Bearing failure judging apparatus
US4493042A · kind A · utility
71Cited by
7References
6Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Feb 19, 1982 |
| Grant date | Jan 8, 1985 |
| Priority date | — |
| Expiry date | Feb 19, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01H1/003
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A bearing failure judging apparatus correctly judges the type of the cause of a failure of a bearing by synthetically judging many factors found in a vibrating waveform of a vibration produced when a failure takes place in the bearing i.e. various features of the time-waveform; a localization of the amplitudes of the time-waveform, the periods of pulsating waves, a degree of the acuteness of the waveform depicted by its envelope, the presence or absence of the proper peak value in the frequency spectra, and a change of the waveform after a given time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.