Patent · US Active

Switching device and lubricating pump

US11199204B2 · kind B2 · utility

1Cited by

1References

13Claims

0Family size

Assignee

SKF LUBRICATION SYSTEMS GERMANY GMBH · DE

Inventors

Dieter Hess · Rheinbach, DE
Juergen Kreutzkaemper · Waibstadt, DE
Stefan Schuermann · Walldorf, DE

Key dates

Filing date	Mar 9, 2020
Grant date	Dec 14, 2021
Priority date	—
Expiry date	Mar 9, 2040

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16N13/18
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A switching device for alternately connecting a hydraulic drive of a lubricating pump to a pressure line and to a return line of a hydraulic circuit. The switching device includes first and second drive lines connected to the hydraulic drive, and pressure and return drive lines connected to the pressure and return lines. A switching valve is in fluid communication with the drive lines and is switchable between first and second switching states to connect the pressure drive line to the first drive line or to the second drive line. A plurality of hydraulic control lines control the position of the switching valve. The drive lines are configured to conduct a first volumetric flow of hydraulic fluid and the hydraulic control lines are configured to conduct a second volumetric flow of the hydraulic fluid different than the first volumetric flow.

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