Movable table system
AssigneeDainippon Screen Mfg. Co., Ltd.
InventorShigeru Sasada
Life of this patent
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Abstract
A movable table system comprises a base horizontally mounted on a foundation with an intermediate base engaged with the base through first guides so as to be movable reciprocatively in one linear direction. A movable table is engaged with the intermediate base through second guides similar to the first guides so as to be movable reciprocatively in the same linear direction. A direct-acting type drive is interposed between the movable table and the intermediate base for providing relative movement between the table and the intermediate base. Preferably, the base is mounted on the foundation through vibration absorbers.
Claims10
A movable table system, comprising a base horizontally mounted on a foundation;
- an intermediate base means including at least one intermediate base;
- first guide means for mounting said intermediate base means to said base such that said intermediate base means is reciprocatingly movable in one linear direction;
- a movable table;
- second guide means for mounting said movable table to the intermediate base means such that said intermediate base is movable reciprocatingly in said one linear direction, and means to maintain an invariable center of gravity in the system, including a direct-drive type driving means interposed only between said movable table and said intermediate base without direct driving means between the intermediate base means and the base for providing relative movement between said table and said intermediate base, whereby movement of said table along a path in said one linear direction initiated by said driving means results in compensating movement of said intermediate base, said compensating movement being substantially equal in distance and opposite in direction relative to said base.
Dependencies are inferred from the claim text.