Patent · US Active

Method for monitoring the state of a device and device

US11959469B2 · kind B2 · utility

0Cited by

6References

9Claims

0Family size

Assignee

Putzmeister Engineering GmbH · DE

Inventors

Carl Wiesenack · Munich, DE
Benjamin HOELZLE · Bad Urach, DE
Michael Schaefer · Heidenau, DE
Wolf-Michael Petzold · Esslingen am Neckar, DE
Jan Veit · Plano, US
Wilhelm Hofmann · Niederdorfelden, DE

Key dates

Filing date	Aug 20, 2020
Grant date	Apr 16, 2024
Priority date	—
Expiry date	Jan 13, 2041

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF04B2201/0202
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A method monitors the state of a device having a first drive cylinder for receiving hydraulic fluid and a first drive piston which is movably arranged in the first drive cylinder. The method determines a speed of the first drive piston, establishes a difference between the determined speed of the first drive piston and an expected speed of the first drive piston, and determines a faulty state as a function of the difference established between the determined speed of the first drive piston and the expected speed of the first drive piston.

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