Monitoring system for cyclically operating machines

Details Monitoring system for cyclically operating machines Monitoring system for cyclically operating machines

1991-05-31

1993-01-19

Raevis, Robert

Measuring and testing

Vehicle chassis

Steering

G01M 1500

Patent

active

051798573

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.

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patent: 4424709 (1984-01-01), Meier, Jr. et al.
patent: 4446724 (1984-05-01), Focht
patent: 4761993 (1988-08-01), Klepacki

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