Patent ID: 6109292
Filing Date: 2000-08-29
Classification: B25B,E03B,F16K,Y10T

Abstract:
A device for removing a rotatable keyed actuation portion of a fire hydrant or other valve device which is surrounded by a non-rotatable protective cover and is substantially flush with the top portion of the rotatable keyed actuation portion and attached to a lower valve stem portion of the fire hydrant or other valve device, said removing device comprising:a center shaft having reversible ends with a tapered punch guiding assembly at one end and a threaded actuating guiding assembly at the other ends either end being engaged by means of an with an inertial weight assembly to allow the weight to move in lineally opposite directions,a tapered punch guide assembly to fit over and around the non-rotatable protective cover for alignment of the tapered punch portion of the center shaft with the center of the rotatable keyed actuation portion,a tapered punch portion for penetrating a pre-centered and concave bottom portion of a rotatable keyed actuation portion to create a hole,a threaded actuating guide assembly to fit over and around the non-rotatable protective cover for alignment of the threaded actuator portion of the center shaft with the center of the rotatable keyed actuation portion,a threaded actuation portion to be inserted into the hole created by the tapered punch portion for engaging the rotatable keyed actuation portion by applying rotational force to the center shaft while applying inward force against the rotatable keyed actuation portion,an inertial weight assembly fitted over and around the center shaft with a free sliding weight confined by at least two weight stops at selected positions along said center shaft to act as impact points for forcing the tapered punch portion or the threaded actuation when the slidable weight is impacted against at least one of said weight stops to allow removal of the keyed actuation portion.