Patent · US Active

Liquid supply system

US11661240B2 · kind B2 · utility

1Cited by

1References

20Claims

0Family size

Assignee

Grundfos Holding A/S · DK

Inventors

Rainer Schmitz · Mönchengladbach, DE
Valeri Kechler · Pforzheim, DE
Klaus Müller · Wilhelmsfeld, DE

Key dates

Filing date	Jun 24, 2021
Grant date	May 30, 2023
Priority date	—
Expiry date	Jul 29, 2041

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF04B2205/00
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A liquid supply system includes a suction lance (6) configured to be inserted into a liquid container (14) and at least one level sensor (10, 12) fixed on the lance (6) and configured to detect a liquid level (22) inside a liquid container (14). A control device (4) is connected to the level sensor (10, 12) and configured to determine a rate of change of the liquid level (22) detected by the at least one level sensor (10, 12) and to detect a lance removal if the rate of change reaches or exceeds a predefined threshold. A method for detecting the removal of a suction lance (6) from a liquid container (14) is provided.

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