Patent · US Expired

Sensing apparatus for monitoring a structure subject to wear

US4890697A · kind A · utility

9Cited by

8References

9Claims

0Family size

Assignee

kabelmetal electro GmbH · DE

Inventors

Werner Fischer · Heimsheim, DE
Friedrich Schauer · Heroldsberg, DE
Kurt Kramer · Bonn, DE

Key dates

Filing date	Dec 1, 1988
Grant date	Jan 2, 1990
Priority date	—
Expiry date	Dec 1, 2008

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16D66/027
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

There is disclosed a sensing apparatus for monitoring a structure subject to wear, and providing an automatic indication upon the thickness of such structure being worn to a predetermined, minimum operable value. Such apparatus includes a sensing device that is insertable into a recess in one surface of structure to a depth corresponding to the predetermined minimum thickness; and a coaxial electrical cable including an inner conductor, a heat resistant covering, and an outer metallic tubular sheath that is preferably corrugated. One end of the coaxial cable is shaped as a loop and is positioned within the sensing device in the vicinity of the bottom face thereof, while the other end of the cable is connected to a contact assembly to which is connected a measuring circuit for automatically ascertaining the condition of the cable components within the sensing device.

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