Automatic spring pump e.g. for ship models, has integrated electronics which registers resistance from two sensor contacts when simultaneously contacting water and air and provides shifting process

摘要

The automatic spring pump (5) has integrated electronics and which registers a resistance from two sensor contacts (1) when simultaneously contacting water and air and provides a shifting process. The shifting process switches on and after discharging the water, switches the pump off and optionally a signal generator such as a horn.