Patent · US Active

Pressure vessel

US7918437B2 · kind B2 · utility

2Cited by

5References

15Claims

0Family size

Assignee

ZF FRIEDRICHSHAFEN AG · DE

Inventor

Norbert Ackermann · Eitorf, DE

Key dates

Filing date	Feb 22, 2008
Grant date	Apr 5, 2011
Priority date	—
Expiry date	Aug 1, 2029

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF15B15/1428
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

Pressure vessel filled with at least one medium, where a gas mass enclosed by an envelope is pre-pressurized by a fluid, especially for volume compensation in piston-cylinder assemblies. The separating means is provided in an annular space, which is bounded by an interior wall and an exterior wall, and where at least one port for the annular space and at least one port for the enclosed gas mass are provided. The ports are aligned when the piston-cylinder assembly is inserted in the pressure vessel, which moves seals into their sealing positions.

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