Patent ID: 6524174
Filing Date: 2003-02-25
Classification: B24B

Abstract:
In apparatus for manufacturing a semiconductor device, a rotary device comprising:a spindle, a rotary head, and a clamp clamping said spindle and said head to one another, said clamp including an annular clamping frame comprising first and second arcuate arms encircling said spindle and said head and having free ends, respectively, that confront each other, a projection protruding from the free end of said first arm, a lever pivotally connected to the free end of said second arm, and a fastener having one end pivotally connected to said lever and another end configured so as to be hookable onto said projection, said fastener being pivotally connected to said lever at a location offset from that at which said lever is pivotally connected to the free end of said second arm, and said lever, said fastener and said projection collectively constituting a toggle joint, whereby said fastener is movable, by pivoting said lever in a first direction, to an open position at which the fastener can be hooked onto or unhooked from said projection, and whereby once said fastener is hooked onto said projection, said fastener is movable, by pivoting said lever in a second direction opposite to said first direction, to a closed position whereat said free ends of the arms of the clamp member are forced toward each other by said toggle joint to thereby generate a clamping force that acts to secure said spindle and said head to one another.