Core and water collector

Claim 2

In combination with a motor driven cylindrical drill for carrotting a concrete floor and the like, the drill having spaced hard segments at its working edge, a system comprising: (a) means to feed water at the exterior part of the drill, at the concrete floor level, in the direction of the space between the hard segments, for the infiltration of water at the moment of drilling, in the interior direction of the drill and the exterior part of the carrott, thus entraining mud, composed of water and concrete particles, within the top of the drill; (b) a mandrel adaptor comprising a central rotating part and an external sliding cage, said adaptor being located between the drill and the motor shaft, said central rotating part fixed to said motor shaft and to the top of said drill; said adaptor being provided with internal channels to enable a vacuum pump or similar suction element connected to the said sliding cage, to aspirate the said mud through said sliding cage, the rotating part and the top part of the drill.

Claim 3

An adaptor for a drill carrotting a concrete floor, said adaptor being installed on shaft of the motor and on end of drill and transmitting the effect of suction and vacuum caused by an aspirator, through the interior of a drill, and in a continuous fashion when subjected to a rotation movement, and thus aspirating the debris of concrete and the water utilized for washing and cooling the segments of the drill, and comprising: (a) a barrel comprising an interior axial part of a shape following the external contour of the said barrel and capable of retaining a reserve of air and liquid, said barrel having a radial opening connected to a vacuum pipe; (b) a central mandrel for installation in the interior axial part of the barrel one extremity of which is adapted on the shaft of the motor and the other extremity being adapted to the interior of the drill and comprising a central axial opening and at least two radial openings whose surfaces are greater, when added, than that of the axial opening, a shoulder, radial and peripheral, for receiving and supporting the said barrel; (c) circular bearings with an L-shaped section to rest on the supporting surface of the shoulder of the mandrel and on the base and the interior part of the barrel; (d) steel or hard material annular discs used to rest on the metal and to slide on the bearing; (e) means to lock in place the hard material discs.

Claim 4

An adaptor for a drill carrotting a concrete floor, said adaptor being installed on shaft of the motor and on end of drill and transmitting the effect of suction and vacuum caused by an aspirator, through the interior of a drill, and in a continuous fashion when subjected to a rotation movement, and thus aspirating the debris of concrete and the water utilized for washing and cooling the segments of the drill, and comprising: (a) a barrel comprising an interior axial part of a shape following the external contour of the said barrel and capable of retaining a reserve of air and liquid, said barrel having a radial opening connected to a vacuum pipe; (b) a central mandrel for installation in the interior axial part of the barrel one extremity of which is adapted on the shaft of the motor and the other extremity being adapted to the interior of the drill and comprising a central axial opening and at least two radial openings whose surfaces are greater, when added, than that of the axial opening, a shoulder, radial and peripheral, for receiving and supporting the said barrel; (c) circular bearings with an L-shaped section to rest on the supporting surface of the shoulder of the mandrel and on the base and the interior part of the barrel; (d) steel or hard material annular discs used to rest on the metal and to slide on the bearing; (e) means to lock in place the hard material discs.

Claim 5

An adaptor as described in claim 2 whose means of holding axially in place the steel and rubber rings comprise a spring lock installed in a ravine formed in the exterior part of the mandrel and said spring being secured in place by the compression of a rubber ring placed on a hard material disc.