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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 7561392 B1

PDFFull Text
Date of Patent:
Jul. 14, 2009

Filed:

Dec. 03, 2004

Intrinsically safe data transmission device

Applicants:

Udo Becker, Duisburg, DE;

Manfred Scharfenberg, Unna, DE;

Inventors:

Udo Becker, Duisburg, DE;

Manfred Scharfenberg, Unna, DE;

Assignee:

Cooper Crouse-Hinds GmbH, Soest, DE;

Attorney:

Fish & Richardson P.C.

Primary Examiner:

Crystal J Barnes Bullock

Int. Cl.
CPC ...
H02H 7/00 (2006.01); H02H 3/00 (2006.01); H02H 3/20 (2006.01); H02H 9/04 (2006.01); H02H 3/08 (2006.01); H02H 9/02 (2006.01); H02H 5/04 (2006.01); G01V 3/00 (2006.01); G08C 19/04 (2006.01); G05B 11/01 (2006.01); G05B 19/18 (2006.01); G01R 15/00 (2006.01); G05D 3/12 (2006.01); G05D 5/00 (2006.01); G05D 9/00 (2006.01); G05D 11/00 (2006.01); G05D 17/00 (2006.01); G06F 11/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

A process control system () comprises at least one process control computer () and field units () connected thereto via a bus system. An, in particular, intrinsically safe data transmission device () is connected between the process control computer and the assigned field units. This data transmission device comprises a data adaptation device () and a data distributing device (). In order to be able to connect more field units per data adaptation device while simultaneously reducing the costs per field unit, the data adaptation device () and its assigned supply devices () have an explosion-proof design, and each supply device is connected to the data distributing devices via an explosion-proof line, whereby these data distributing devices or field units connected thereto have a barrier device for limiting the applied power.

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