Drawback device controlled by liquid surface tension, a switch incorporating such a device, and its use in magnetic relays

摘要: A drawback device to ensure the return of a moving part its original position, after it has been moved away from by another force. The existing method, involving an elastic mechanical component which acts as spring, is replaced in this invention quantity liquid, placed between and fixed part, remaining there through effect capillarity. When moves surface tension created on tending draw back position. Such devices are used sealed miniaturized relays with mercury-wetted contacts.