Patent · US Expired

Sealing arrangement for heat treatment apparatus

US5193998A · kind A · utility

25Cited by

4References

7Claims

0Family size

Assignee

Arthur Pfeiffer Vakummtechnik Wetzlar GmbH · US

Inventors

Robert Hack · Biebertal, DE
Jens Lindemann · Gießen, DE
Erhard Netz · Hohenahr, DE

Key dates

Filing date	Jun 5, 1991
Grant date	Mar 16, 1993
Priority date	—
Expiry date	Jun 5, 2011

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF27D1/1858
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

A heat treatment apparatus for vacuum and high pressure operation includes a container within a vessel separated by thermal insulation. The vessel has a door for access to the container. Both the container and thermal insulation have separate doors mounted on a common frame pivotally mounted inwardly of the vessel door. The container door can be opened and closed from otuside the vessel when the thermal insulation and vessel doors are closed. Normally the container door is kept open in case of failure of the closing mechanism or in the event of a power failure.

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