Patent · US Expired

Depth measuring apparatus for a dredger

US4726682A · kind A · utility

23Cited by

1References

5Claims

0Family size

Assignee

Moba Electronic Gesellschaft fur Mobil-Automation mbH · DE

Inventors

Paul Harms · Hadamar, DE
Willibald Sehr · Hadamar, DE

Key dates

Filing date	Feb 7, 1986
Grant date	Feb 23, 1988
Priority date	—
Expiry date	Feb 7, 2006

Classification

Technology area (CPC G)Physics
CPC primaryG01D5/26
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

The invention relates to a depth measuring apparatus for a dredger, comprising an inclination sensor mounted on the dredger arm, a receiver for receiving a radiation establishing a reference level, and an evaluation circuit connected to the receiver and to the inclination sensor. In a known measuring apparatus of this type, the receiver merely serves for calibrating a pressure sensor operative to indicate the position of the dredger arm relative to the body of the dredger. According to the invention, for improving the measuring accuracy the receiver is itself operable to determine the position of the radiation determining the reference level relative to the receiver, the thus obtained information being employed together with the inclination signal for determining the operating depth of the dredger scoop.

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