Patent ID: 7396194
Filing Date: 2008-07-08
Classification: B25H,Y10T

Abstract:
1. An arrangement for mounting a drill press on a manhole cover comprising: an adjustable plate having an arcuate periphery defined by an arcuate rim projecting below the plate and being substantially concentric with an axis of the arcuate periphery; wherein the plate mounts the drill press on a manhole cover; an electromagnetic fixing the drill press to the plate; a plurality of brackets located in spaced relation on the arcuate rim of the plate and an L-shaped clamp slidably disposed in a slot in each bracket; the L-shaped clamp having a first arm extending in the direction of the axis and a second arm extending radially inward toward the axis with the first arm being slidably mounted in the bracket; the bracket having a first screw for engaging the first arm to an axial position, the first arm in the bracket holding the second arm in clamping position with respect to the manhole cover; a second screw threaded through the manhole cover in alignment with the second arm for clamping the plate to the manhole cover, and an enlargement disposed on the first arm of the L-shaped clamp, which enlargement has a dimension larger than the slot in the bracket through which the first arm is received, wherein the L-shaped clamp is loosely retained in the slot in the bracket by the arrangement and second arm until the first screw is tightened.