Patent · US Active

Flame-proof housing

US8987592B2 · kind B2 · utility

4Cited by

3References

10Claims

0Family size

Assignee

Konecranes PLC · FI

Inventors

Wilhelm Mack · Vellberg, DE
Willy Grübel · Niedernhall, DE
Tatjana Kapp · Winnweiler, DE
Andreas Wulff · Künzelsau, DE
Wilfried Hess · Gaildorf, DE

Key dates

Filing date	Mar 27, 2012
Grant date	Mar 24, 2015
Priority date	—
Expiry date	Aug 21, 2032

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S248/906
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A flame-proof housing (10) of the protection type ex-d is made from two sheet metal blanks that are bent in a u-shaped fashion. They then are fitted into one another and subsequently welded together by means of a peripheral fillet weld without welding seam preparation. A large opening (28) can be provided on one side of the housing (10), which can be closed with a threaded cover or with a flat cover.

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