ES240113A1 - Perfected pump for brake and similar installations (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Improved pump for installations of hydraulic brakes and the like, of the two stepped piston type, characterized in that the larger diameter chamber of the pump is in communication with the utilization circuit and in this chamber the larger piston is displaced, while the small piston, rigidly connected to the larger one, is movable in an extension of smaller diameter of said chamber and on said smaller piston the maneuvering member acts, the space comprised between the two pistons being in communication, on the one hand with the supply tank through a hole controlled by a check valve and, on the other hand with said larger diameter chamber by a hole disposed in the large piston and controlled by a check valve tared to open towards this space from a pressure equal to that obtained in the above mentioned camera at the end of the approach race of the mandated organs, the first valve being, in addition, ispuesta to open automatically, from the container to said space, when the pressure inside this container tends to exceed that of the aforementioned space, and to be automatically opened by the larger piston in the position of rest. (Machine-translation by Google Translate, not legally binding)