Monitoring system for cyclically operating machines
US5179857A · kind A · utility
9Cited by
8References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 31, 1991 |
| Grant date | Jan 19, 1993 |
| Priority date | — |
| Expiry date | May 31, 2011 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02B3/06
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Monitoring systems for cyclically operating machines having a cylinder including sensor to be mounted on the exterior of said cylinder for detecting both force in said cylinder and structure-borne signals in the cylinder; and having a computer for storing pre-recorded force and structure-borne noise signal as a function of time in a cycle and for comparing said detected and pre-recorded force and structure-borne noise signals to determine the status of said machine. The sensor has the form of a thin disk fitted between a cylinder cover and a nut of a cylinder cover stud under preload, thus replacing the standard washer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.