Servus together! Unfortunately I didn’t find anything about the search and on Google so directly also not of so I hope you can help me! And I heard that there are so-called spring memory with emergency release device at THW and fire department, say you only have to hit a certain place at the spring memory with the hammer and the brake would be free! Does any of you happen to know links to any pages where you can take a closer look at the construction of these things? Federspeicher an exact designation and can they only be installed at THW and fire brigade? Greetings and thanks S-XT