Patent · US Active

Hydraulic unit

US8220380B2 · kind B2 · utility

6Cited by

6References

20Claims

0Family size

Assignee

WAGNER VERMÖGENSVERWALTUNGS-GMBH & CO. KG · DE

Inventors

Günter Andres · Much, DE
Ulf Sittig · Bad Wurzach, DE
Bernd Thelen · Much, DE
Paul Wagner · Mülheim an der Ruhr, DE

Key dates

Filing date	Mar 23, 2006
Grant date	Jul 17, 2012
Priority date	—
Expiry date	Nov 2, 2028

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF04B23/021
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

The invention relates to a hydraulic group comprising a reservoir (28) for oil, in which a multiple piston pump (60) is arranged. The individual pumps (61) are cyclically driven by an eccentric ring (29). In order to ensure a permanent immersion of the individual pumps in the reservoir (28), an auxiliary reservoir (47) providing oil for refilling the reservoir (28) is arranged above the reservoir. The auxiliary reservoir (47) is connected to an additional tank (45) by means of a connection line (48).

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