Stone working – Sawing – Rotary
Patent
1998-03-23
2000-09-05
Rada, Rinaldi I.
Stone working
Sawing
Rotary
451352, 30370, 30371, 30391, 299 393, 404 93, 83875, B26D 306, B28D 104, B28B 1108
Patent
active
061127361
ABSTRACT:
An apparatus for cutting grooves in a green concrete slab having at least one terminating side edge transverse to a broad top surface in a low cost manner is described and includes the following elements: a hand-held portable rotary saw, supported on a rollable platform disconnectably connected to and supporting the relative to the green concrete slab. The rollable platform includes a planar base in surface contact with a conventional guide plate of the saw, and flared side walls extending outwardly from the planar base an anchoring portion adapted to receive a human-generated force to provide rectilinear travel along a preselected direction over the green concrete slab. The planar base also includes a slot in alignment with an opening in the guide plate through which the saw blade extends whereby a working plane of reference is defined that intersects an axis of rotation of the saw blade whereby a maximum depth of cut is easily defined coincident with the working plane of reference. The rollable platform also includes a set of rollers in rolling contact with the green concrete slab to facilitate the rectilinear travel wherein first and second pairs of rollers define parallel axes of rotation normal to said pre-selected direction of travel that facilitate operations in a low cost manner.
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Ashley Boyer
Messner Harold D.
Rada Rinaldi I.
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