ES224511A1 - Improvements in the master cylinder for hydraulic brake systems, particularly of autovehicles (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Improvements in the master cylinder for hydraulic brake systems, particularly of motor vehicles, of the type comprising a cylinder, a main piston slidable in said cylinder under the action of control means, a first fluid supply conduit to the compression chamber of the said cylinder, first valvular means for interrupting the communication between the compression chamber of said main piston and the fluid supply conduit during the delivery path of said piston and for restoring it during the return path, a conduit derived from said chamber compression for feeding a first series of wheel cylinders, a secondary piston slidable in said cylinder controlled by the fluid pressure created during the delivery path in the compression chamber of said main piston, a second fluid supply conduit to the compression chamber of said em secondary bolus, second valvular means for interrupting the communication between the compression chamber of said secondary piston and the second fluid supply conduit d during its delivery path and for restoring it during the return path, a conduit derived from the compression chamber of the said secondary piston for feeding a second series of cylinders, wheel and elastic means for making the return path to the pistons when the control action on the main piston ceases, characterized by the fact that the first and the second valvular means each comprise an elastic ring mounted free to float axially between the shoulders connected to the respective piston and with the outer face in frictional contact with the wall of the cylinder, and means for bringing fluid to the pressure existing in the compression chamber of each one of the pistons in contact with the inner face of the respective ani floating llo. (Machine-translation by Google Translate, not legally binding)