Method and apparatus for improving operation of masonry saws and drills
OwnerMichael J. DeBlasioinventor
Life of this patent
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Abstract
An improved method and apparatus for sawing or drilling concrete or like material comprises use of a fluid flow device for transmitting a stream of water from a pressurized water supply to the cutting elements of a masonry saw or core drill and for injecting a speed-enhancing compound into the stream of water, with the compound being injected under the influence of a venturi-induced suction force created by the stream of water as it flows through the device. Preferably the device includes means for varying the rate at which the speed-enhancing compound is sucked into the water stream.
Claims18
A method for improving the rate at which a driven cutting device penetrates a masonry material such as concrete, granite or other rock, sandstone, fired brick or a like material using a core drill, said method comprising:
- passing a cooling stream of water to said cutting device;
- and
- injecting a speed-enhancing composition into said stream of water by a venturi-induced suction force.
Apparatus for improving the rate at which a driven cutting device penetrates a masonry material such as concrete, granite or other rock, sandstone, fired brick or a like material using a core drill, said apparatus comprising:
- water-directing means for directing a flow of water to said cutting device;
- and
- a venturi liquid injection device having a water flow-through passageway, inlet and outlet ports communicating with said passageway, and an injection port communicating with said passageway, said outlet port being connected to said water-directing means, said inlet port being adapted to be connected to a water supply and said injection port being adapted to be connected to a supply of a liquid speed-enhancing composition;
- said injection device being designed so that a stream of water flowing under pressure in said passageway from said inlet port to said outlet port will produce a venturi-induced suction force in said injection port sufficient to cause injection of a liquid speed-enhancing composition into said passageway via said injection port when said injection port is connected to a supply of said composition.
Dependencies are inferred from the claim text.