Patent · US Expired

High pressure generating apparatus

US5622678A · kind A · utility

19Cited by

7References

5Claims

0Family size

Assignee

UHDE GMBH · DE

Inventors

Josef Hiltawsky · Schwerte, DE
Jorg-Peter Korner · Hagen, DE
Heribert Dierkes · Hagen, DE
Hans-Ottomar Kurtz · Dortmund, DE

Key dates

Filing date	May 24, 1995
Grant date	Apr 22, 1997
Priority date	—
Expiry date	May 24, 2015

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61L2/02
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

A high-pressure generating apparatus including a high-pressure chamber, a low-pressure chamber located beneath the high-pressure chamber and having a diameter substantially larger than the diameter of the high-pressure chamber, a tandem piston having first and second portions displaceable in the high-pressure and low-pressure chambers, respectively, for building-up pressure therein, and a yoke embracing the high-pressure and low-pressure chambers for applying a pressure force to the high-pressure chamber cover and the low-pressure chamber bottom upon built-up of pressure in the high pressure and low-pressure chambers.

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