Patent ID: 6877711
Filing Date: 2005-04-12
Classification: F16F

Abstract:
1. A vibration isolation table comprising: a stationary housing having an opening on a top surface thereof; a pressure-tight flexible member which closes said opening to form a first pressure chamber in said stationary housing; a primary movable base which is coupled to a central portion of said pressure-tight flexible member, said primary movable base having a bottomed hollow cylindrical member which is provided at a center of said primary movable base and extends downwards to be positioned in said first pressure chamber, an upper end of said bottomed hollow cylindrical member being formed as an open end; an intermediate movable base having a swingable rod which is inserted into said bottomed hollow cylindrical member so that a bottom end of said swingable rod is supported by a bottom of said bottomed hollow cylindrical member in a manner to allow said swingable rod to swing with respect to said bottomed hollow cylindrical member; and a vibration-free base on which an object to be isolated from vibration is mounted, a second pressure chamber being formed between said intermediate movable base and said vibration-free base, said second pressure chamber being capable of expanding and contracting vertically.