Patent ID: 6305512
Filing Date: 2001-10-23
Classification: F16F

Abstract:
A pressure operated valve for use with a vibration damper comprising a piston rod and a cylindrical tube filled with a damping liquid, wherein said piston rod is axially movably arranged in said cylindrical tube, said pressure operated valve comprising:an adjusting device axially movably arranged in a pressure chamber defined in said valve, wherein said adjusting device comprises a valve body and a pressure intensifier;a valve face arranged at a fixed location relative to said pressure chamber, said valve body being movably relative to said valve face, wherein a space between said valve body and said valve face defines a valve passage cross section;a spring operatively arranged for holding said pressure intensifier in a floating arrangement in said pressure chamber, said valve further defining a pressure connection opening in said pressure chamber, said pressure intensifier having a first side exposed to a pressure in said pressure connection opening and a second side facing away from said pressure connection opening, wherein said second side of said pressure intensifier adjoins a low pressure chamber within said pressure chamber;a vent connection comprising an inflow restrictor arranged between said lower pressure chamber and a space having a lower pressure than said low pressure chamber; anda pressure connection to said valve having a thermal insulator arranged between said pressure connection opening and said pressure connection.