Abstract: A carbonator including a sealed container, a carbonation flow path defining element located inside the sealed container and including a water inlet, a carbonation gas inlet and a carbonated water outlet, a carbonation rotor disposed along the carbonation flow path for mixing carbonation gas and water, thereby producing carbonated water, and directing the carbonated water through the carbonated water outlet into the interior of the sealed container, a water cooling coil disposed within the sealed container, a refrigerating coil disposed within the sealed container in direct heat exchange cooling engagement with the carbonated water and in indirect heat exchange cooling engagement with the water cooling coil via the carbonated water and a carbonated water circulating rotor disposed outside of the carbonation flow path defining element and being operative to circulate the carbonated water in heat exchange engagement with the water cooling coil and the refrigerating coil.

Abstract: A carbonator including a sealed container, a carbonation flow path defining element located inside the sealed container and including a water inlet, a carbonation gas inlet and a carbonated water outlet, a carbonation rotor disposed along the carbonation flow path for mixing carbonation gas and water, thereby producing carbonated water, and directing the carbonated water through the carbonated water outlet into the interior of the sealed container, a water cooling coil disposed within the sealed container, a refrigerating coil disposed within the sealed container in direct heat exchange cooling engagement with the carbonated water and in indirect heat exchange cooling engagement with the water cooling coil via the carbonated water and a carbonated water circulating rotor disposed outside of the carbonation flow path defining element and being operative to circulate the carbonated water in heat exchange engagement with the water cooling coil and the refrigerating coil.

Abstract: An oil level regulator for an internal combustion engine, provided with a lubricating oil sump and a starter motor operated by an ignition switch having an ignition lock. An enclosed measuring chamber communicates with the oil in the engine sump, so that the same oil level occurs in the measuring chamber as in the sump. A tank for topping-up oil is connected to the sump by a controllable shut-off device. A level measuring device in the form of a sensor emits an electrical signal as to whether the oil level is correct or too low. If "correct", then the ignition lock is released for a predetermined period, so that the engine can be started. If "too low", a shut-off device is opened for a predetermined period, to allow a certain quantity of oil to the sump, then to measure the oil level again and, if "correct", to release the ignition lock.