POWERED SAW INCLUDING DUST CAPTURE APPARATUS

• US 20140224237A1
• Filed: 03/14/2013
• Published: 08/14/2014
• Est. Priority Date: 02/14/2013
• Status: Active Grant

• Current Assignee: Perfect Trac OpCo, LLC
• Original Assignee: Reginald A. Ronzello Sr
• Inventors: RONZELLO, Reginald A. Sr., MERCK, John S., CROWLEY, Timothy H.
• Granted Patent: US 9,027,542 B2
• Time in Patent Office: Days
• US Class Current: 125/13.01
• CPC Class Codes: B28D 1/045 Sawing grooves in walls; sawing stones from rocks; sawing machines movable on the stones to be cut
• CPC Class Codes: B28D 1/12 Saw-blades or saw-discs specially adapted for working stone B28D1/041 takes precedence
• CPC Class Codes: B28D 7/02 for removing or laying dust, e.g. by spraying liquids; for cooling work
• CPC Class Codes: B28D 7/046 the supporting or holding device being of the vacuum type
• CPC Class Codes: Y10T 83/0453 By fluid application
• CPC Class Codes: Y10T 83/207 By suction means

Abstract

A novel cutting method and apparatus includes a cutting blade adapted to consistently and easily form a desirable kerf in a concrete substrate while capturing substantially all resulting concrete dust.

Claims

1. A concrete saw comprising:

a chassis member, said chassis member having an upper surface region, a front end and a rear end;

a front axle coupled to said chassis member and disposed relatively proximate to said front-end;

a rear axle coupled to said chassis member and disposed relatively proximate to said rear end;

a generally circular saw blade having a circumferential surface region and a blade outer surface region, a centroid of said generally circular saw blade being disposed between said front-end and said rear end, said blade outer surface region being disposed in a plane substantially mutually perpendicular to said front axle and said rear axle;

a vacuum manifold portion, said vacuum manifold portion including a blade box portion and a hose coupling portion, said blade box portion having a box outer surface region and an inner surface region, said inner surface region defining a recess within said blade box, said blade box portion having a slot surface region disposed between said box outer surface region and said inner surface region and defining a slot adapted to receive a portion of said circular saw blade instantaneously therewithin, whereby a normal operational rotation of said saw blade causes said blade outer surface region to traverse said slot from said box outer surface region towards said inner surface region such that a portion of said circumferential surface region is instantaneously disposed within said recess;

said hose coupling portion having a generally annular end surface region and an internal surface region, said internal surface region defining a longitudinal cavity through said hose coupling portion, said longitudinal cavity extending between said recess and said generally annular end surface region whereby a reduction of air pressure adjacent said generally annular end surface region tends to motivate a flow of air within said recess past said portion of said circumferential surface region and through said longitudinal cavity, and thereby withdraw a quantity of particulate debris from within said recess.

2. A concrete saw as defined in claim 1 wherein said recess is divided by said portion of said circumferential surface region to form a first cavity and a second cavity, said first cavity being relatively distal to said hose coupling portion at the second cavity being relatively proximal to said, said relatively distal portion defining a first volume and said relatively proximal portion defining a second volume.

3. A concrete saw as defined in claim 1 wherein said a ratio of said first volume to said second volume has a value of at least about 1.

4. A concrete saw as defined in claim 1 wherein said a ratio of said first volume to said second volume has a value of at least about 2.

5. A concrete saw as defined in claim 1 wherein said a ratio of said first volume to said second volume has a value of at least about 3.