Patent · US Expired

Measuring apparatus for measuring the roll gap in gauge-controlled roll stands

US4161885A · kind A · utility

5Cited by

4References

6Claims

0Family size

Assignee

SACK GmbH · DE

Inventors

Ernst Th. Sack · Ratingen, DE
Friedrich Nordmeyer · Mettmann, DE
Emil F. Kersting · Ratingen, DE

Key dates

Filing date	May 27, 1977
Grant date	Jul 24, 1979
Priority date	—
Expiry date	May 27, 1997

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S367/902
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

Apparatus is provided for measuring the roll gap in roll stands with automatic gap control. The apparatus comprises two relatively movable components which may interfit telescopically. The two components have respective measuring surfaces at one of which is located a pulsed ultrasonic signal transmitter. A sound receiver is located either on the same measuring surface or on the other measuring surface. Measuring means are provided for measuring the time taken for the sound pulses to travel between the measuring surfaces.

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