Patent attributes
A tiltable chair includes a fixing base having a tiltable housing. A gas cylinder inside the tiltable housing reciprocates in upward and downward directions. A seat plate is on top of the gas cylinder. And an elastic tiltable member is inside the fixing base accommodates a longitudinal lower part of the gas cylinder so the gas cylinder moves tiltably about a vertical axis to the bottom of the fixing base. A fixed frame is on the bottom of the fixing base, a coupling frame is inside the center portion of the fixed frame to accommodate the gas cylinder therein, and a rubber packing is between the fixed frame and the coupling frame and deformed elastically in every direction. The rubber packing has tilt concave grooves formed inward to a given depth from top and underside reduced in width toward the insides thereof to form inclined surfaces.
