Patent ID: 6516702
Filing Date: 2003-02-11
Classification: B60T

Abstract:
A servobrake having a rigid jacket defined by a first shell joined to a second shell by through tie-bars to create variable volume front and rear chambers, said front chamber being permanently connected to a first pressure source whereas said rear chamber is selectively connected to said first pressure source and a second pressure source, said servobrake including a pressure sensor for the measurement of the pressure inside of said front and rear chambers, said pressure sensor being characterised by being attached to a front end of said through-tie bar and said tie-bar being characterised by a hollowed-out body with a hollow inner needle sealingly retained therein, said hollow inner needle defining a first chamber while a second chamber is defined by a space between said inner hollow needle and said hollowed-out body, said hollowed-out body having first ports therein for connecting said rear chamber with said first chamber through which pressure present in said rear chamber is transmitted to said pressure sensor; said hollowed-out body having second ports for connecting said front chamber to said second chamber through which pressure in said front chamber is transmitted to said pressure sensor.