Abstract: A safety cap for containers under steam pressure contains internally a diaphragm that is actuated by the pressure of steam in such a way as to break the mechanical connection between a closure member forming part of the cap and screwed onto the container, and a knob forming part of the cap and by means of which the latter can be screwed on and off. In order to increase the safety features of the cap, the latter is fitted with a manometer, incorporated in the cap and readable from the outside, which detects the pressure of steam in the container.

Abstract: A cleaning machine, particularly for domestic use, that provides the greatest possible protection against the risk of electric shocks even if the discharge pipe comes into contact with or is immersed in water in the course of cleaning operations, comprising a line for the communication of fluid between the discharge pipe and the machine, also comprises electrical components and switches for their actuation housed inside a casing, manually actuated pressure-generating means located alongside the discharge pipe, actuator means sensitive to the variations in pressure and connected to said switches and means of pneumatic transmission connected between said pressure-generating means and said actuator means.