All rights in the direct contents of this web site are owned by the author.
Subject to technical changes without notice.

C.Ed. Schulte GmbH Zylinderschlossfabrik
Friedrichstr. 243 - D-42551 Velbert
Postfach 10 11 80 - D-42547 Velbert

Tel.: +49 2051 204 0
Fax: +49 2051 204 229

Amtsgericht Wuppertal
Register-No. HRB 17178
USt-IdNr. DE 121542657

Managing Director: Dipl.-Ing. Richard Rackl

Chairman of the board:
Prof. Dr. Hans-Georg Schnürch


Image copyright:

CES • • dreamstime: Konstantin Chagi, Barbara Helgason, Andrei Malov, Viktor Levi, Unique2109, Stanko07, Oleg Kovalenko, Rodho, Simon Krzic •shutterstock: ikindi • clipdealer: rook76, Paha_L, lebus, anytka. panthermedia:Robert Kneschke, Yuri Arcurs, Harald Richter, Frank Röder.photocase: jala • elxeneize, goodluz, MR.LIGHTMAN, Wilm Ihlenfeld, Monkey Business, m-buehner , fhmedien_de , Christian Schwier, tiero, Joe Gough, RRF, Yuri Arcurs, Felix Meyer, chaoss, Philip Date.

Data Privacy: This website uses Google Analytics, a web analytics service provided by Google, Inc. (“Google”). 
Google Analytics uses “cookies”, which are text files placed on your computer, to help the website analyze how users use the site. The information generated by the cookie about your use of the website (including your IP address) will be transmitted to and stored by Google on servers in the United States. 
In case of activation of the IP anonymization, Google will truncate/anonymize the last octet of the IP address for Member States of the European Union as well as for other parties to the Agreement on the European Economic Area. 
Only in exceptional cases, the full IP address is sent to and shortened by Google servers in the USA. 
On behalf of the website provider Google will use this information for the purpose of evaluating your use of the website, compiling reports on website activity for website operators and providing other services relating to website activity and internet usage to the website provider. 
Google will not associate your IP address with any other data held by Google. 
You may refuse the use of cookies by selecting the appropriate settings on your browser. However, please note that if you do this, you may not be able to use the full functionality of this website. 
Furthermore you can prevent Google’s collection and use of data (cookies and IP address) by downloading and installing the browser plug-in available under

Further information concerning the terms and conditions of use and data privacy can be found at or at 
Please note that on this website, Google Analytics code is supplemented by “gat._anonymizeIp();” to ensure an anonymized collection of IP addresses (so called IP-masking).