Patent ID: 8348217

Claim:
A vibration isolating table with damping mechanism, comprising: a fixed plate having four corner portions to be formed into a substantially rectangular shape, the four corner portions including a pair of opposing corner portions defining a diagonal line that matches with an X direction, and another pair of opposing corner portions defining another diagonal line that matches with a Y direction orthogonal to the X direction; a guiding member provided so as to be freely movable in the X direction relative to the fixed plate; a movable plate on which a vibration isolation subject is to be placed, the movable plate having four corner portions to be formed into a substantially rectangular shape, the movable plate being provided so as to be freely movable relative to the guiding member in the Y direction, and freely movable within a plane parallel to the fixed plate; a plurality of elastic members provided between the fixed plate and the guiding member, the plurality of elastic members being configured to pull the movable plate shifted relative to the fixed plate back to an initial position; a plurality of elastic members provided between the movable plate and the guiding member, the plurality of elastic members being configured to pull the movable plate shifted relative to the fixed plate back to the initial position; rotary dampers arranged at the another pair of opposing corner portions of the fixed plate situated on the another diagonal line that matches with the Y direction; rotary dampers arranged at a pair of corner portions of the movable plate situated on the diagonal line that matches with the X direction; X-directional circulation belts loop around driven members in a manner that rotationally drives the members which are provided to the rotary dampers of the fixed plate, the X-directional circulation belts being stretched into a circular shape along a predetermined path including a route parallel to the diagonal line of the fixed plate that matches with the X direction, the X-directional circulation belts being configured to circulate in accordance with X-directional movement of the guiding member relative to the fixed plate; and Y-directional circulation belts looped around rotationally driven members provided to the rotary dampers of the movable plate, and stretched into a circular shape along a predetermined path including a route parallel to the another diagonal line of the movable plate that matches with the Y direction, the Y-directional circulation belts being configured to circulate in accordance with Y-directional movement of the movable plate relative to the guiding member.