Patent · US Expired

Arrangement for the sealing-off of metallic cylindrical bodies

US5368312A · kind A · utility

22Cited by

7References

3Claims

0Family size

Assignee

Deutsche Aerospace AG · DE

Inventors

Arno Voit · Hausham, DE
Walter Stich · Miesbach, DE

Key dates

Filing date	Jul 30, 1993
Grant date	Nov 29, 1994
Priority date	—
Expiry date	Jul 30, 2013

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S277/931
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A sealing arrangement for the sealing-off of metallic cylindrical bodies is disclosed, particularly for shafts in cryogenic valves which are surrounded by an essentially ring-shaped sealing device which cannot be glued to metal. The sealing device is surrounded by a ring which is arranged concentrically with respect to the shaft, consists of a metal alloy with shape memory characteristics and with a one-way characteristic and the interior shape of which is adapted to the exterior shape of the sealing device and which contracts when the transition temperature is exceeded.

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