Patent ID: 6904839
Filing Date: 2005-06-14
Classification: B62D,F15B

Abstract:
1. An oleopneumatic actuator cylinder device for steering and self-centering axles having wheels thereon, comprising: a stem located inside the oleopneumatic actuator cylinder device and emerging out of a top base of the oleopneumatic actuator cylinder device, the stem being kinetically connected to a mechanical driving element suitable for moving the wheels of said steering and self-centering axles in a vehicle; a pneumatic sector located next to a bottom base of the oleopneumatic actuator cylinder device and dedicated to the use of air under pressure, the pneumatic sector communicating with a respective pneumatic circuit, wherein the pneumatic sector is subdivided by a fixed abutment into two chambers, each chamber being suitable for hosting a floating piston as well as a second piston, the second piston being fixed to an inner end of the stem and being free to move from one said chamber to the other chamber; an oleodynamic sector located next to the top base of the oleopneumatic actuator cylinder device and communicating with an oleodynamic circuit; the oleodynamic sector dedicated to the use of oil under pressure; the oleodynamic sector including an intermediate piston fixed to said stem; and a central body delimiting the pneumatic sector and the oleodynamic sector.