Patent · US Expired

Multi-stage piston type compressor

US7351044B2 · kind B2 · utility

1Cited by

9References

7Claims

0Family size

Assignee

Continental AG · DE

Inventors

Iwan Antufjew · Tirschenreuth, DE
Marko Schrödter · Tirschenreuth, DE
Stefan Beetz · Barnin, DE

Key dates

Filing date	May 24, 2002
Grant date	Apr 1, 2008
Priority date	—
Expiry date	Sep 3, 2022

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF05C2225/00
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

In order to achieve a high level of impermeability with a low closing force for the sealing elements of a multistage piston compressor, the overflow channel (19) in the valve piston (9) opens into at least two passages (26, 27) and the sealing plate of the overflow check valve (20) that is located in the valve piston (9) is configured as a freely guided closing membrane (28) with a limited stroke. The passages (26, 27) of the overflow channel (19) have different diameters, are arranged on a graduated circle at a radial distance from the axis of the closing membrane (28) and are completely covered by the closing membrane (28).

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