Patent · US Expired

Method and apparatus for non-invasive monitoring of solenoid valves

US5477149A · kind A · utility

41Cited by

13References

23Claims

0Family size

Inventors

George M. Spencer · West Chester, US
John W. McElroy · Havertown, US
Michael Lind · Ans, DK

Key dates

Filing date	Dec 29, 1993
Grant date	Dec 19, 1995
Priority date	—
Expiry date	Dec 29, 2013

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T137/8242
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A non-invasive apparatus and method is disclosed which is adapted for testing of solenoid valves to verify valve operation. The non-invasive apparatus and method monitors with time both the stroke of the solenoid valve plunger to identify associated impacts and the state of the solenoid valve as being energized or de-energized to determine valve operability.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.