Patent · US Expired

Height sensing device including an ultrasonic sensor and a mechanical sensor

US5035290A · kind A · utility

10Cited by

4References

2Claims

0Family size

Assignee

Moba Electronic Gesellschaft fur Mobil-Automation mbH · DE

Inventors

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

Key dates

Filing date	Oct 27, 1989
Grant date	Jul 30, 1991
Priority date	—
Expiry date	Oct 27, 2009

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S37/907
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A height-position sensing device for use with a contol circuit for controlling the height position of a blade in the case of a motor grader includes a mechanical height-position sensor and a ultrasonic height-position sensor which are connected to a common control circuit via a switch.

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