초록 ▼

An improved device for supporting and holding an object in place under temperature controlled conditions is described. The device comprises a shaft mounted for rotation about a rotation axis, and a top plate coupled to and rotatable with the shaft. The top plate comprises a top substantially planar

An improved device for supporting and holding an object in place under temperature controlled conditions is described. The device comprises a shaft mounted for rotation about a rotation axis, and a top plate coupled to and rotatable with the shaft. The top plate comprises a top substantially planar surface disposed normally to said axis, a bottom surface disposed opposite the top surface, and at least one aperture disposed in the top surface for providing a negative pressure vacuum so that the object can be held in place on the top surface by the negative pressure vacuum. Electrical temperature sensing means is disposed in the top plate for providing an electrical signal as a function of the temperature of the top plate. Electrical temperature modification means is coupled to and rotatable with the shaft and disposed relative to the bottom surface of the top plate for maintaining the temperature of the top plate at a preselected temperature. Heat sink means is coupled to and rotatable with the shaft and disposed relative to the temperature modification means for drawing excess heat from the temperature modification means away from the top plate. Finally, the table comprises a plurality of electrically-conductive brushes mounted in a spaced-apart relation, and a plurality of electrically-conductive rings concentrically mounted with respect to the axis. Each ring is mounted in a plane normal to the axis and is in electrical contact with and rotatably movable with respect to at least one of the brushes as the table turns about the axis, wherein at least two of the rings are electrically coupled to the electrical temperature sensing means so that the electrical signal can be transmitted from the table, and at least two of the rings are electrically coupled to the electrical temperature modification means so that electrical power can be transmitted to those means.

대표청구항 ▼

A device for supporting and holding an object in place, said device comprising, in combination: a shaft mounted for rotation about a rotation axis; a top plate coupled to and rotatable with said shaft and comprising a top substantially planar surface disposed normally to said axis, a bottom surface

A device for supporting and holding an object in place, said device comprising, in combination: a shaft mounted for rotation about a rotation axis; a top plate coupled to and rotatable with said shaft and comprising a top substantially planar surface disposed normally to said axis, a bottom surface disposed opposite said top surface, and at least one aperture disposed in said top surface for providing a negative pressure vacuum so that said object can be held in place by said negative pressure vacuum on said top surface; electrical temperature sensing means disposed in and rotatable with said top plate for providing an electrical signal as a function of the temperature of said top plate; electrical temperature modification means responsive to said electrical signal, coupled to and rotatable with said shaft and disposed relative to said bottom surface of said top plate for maintaining the temperature of said top plate substantially at a preselected temperature; heat sink means coupled to and rotatable with said shaft and disposed relative to said temperature modification means for drawing excess heat from said temperature modification means away from said top plate; and a plurality of electrically-conductive brushes mounted in a spaced-apart relation, and a plurality of electrically-conductive rings coaxially mounted with respect to said axis, each said ring being mounted in a plane normal to said axis and in electrical contact with and rotatably movable with respect to at least one of said brushes when said shaft, top plate, electrical temperature sensing means, electrical temperature modification means and said heat sink means rotate about said axis, wherein at least two of said rings are electrically coupled to said electrical temperature sensing means so that said electrical signal can be transmitted through the corresponding ones of said brushes, and at least two of said rings are electrically coupled to said temperature modification means so that electrical power can be transmitted to said temperature modification means.