US 4,900,094 AGranted

Adjustable plunge-cut road saw mechanism

OwnerMark R. Sergeantinventor

Life of this patent

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Abstract

A heavy vehicle has fixed cross braces mounted on its frame perpendicular to the direction of the vehicle, and close to the surface of a road. Movable cross braces fit within these fixed cross braces, and support a circular cutting tool that can be extended, laterally, to line up with a guide line on the surface of the road, and that pivots up and down to cut into the surface of the road. An additional pivot permits the circular cutting tool to be set level with the surface of the road before a cut is made. A water supply, with suitable nozzles directed at the cutting blades of the circular cutting tool, cools and lubricates the blades while they are cutting into the surface of the road. A source of compressed air with suitable nozzles, that can be directed at the newly cut holes in the surface of the road, cleans out the holes for the installation of safety reflectors.

Claims8

Dependent claims

A machine for cutting holes in a road surface for mounting reflective safety units comprising a vehicle to be moved along a road way, for supporting said mechanism;

at least one lateral, fixed support member extending across said vehicle substantially perpendicular to the direction of said road way;
at least one movable support member supported by said fixed support member and movable with respect to and in the direction of said fixed support member;
a rigid brace secured to the end of said movable support member;
a circular cutting tool pivoted to said rigid brace and movable up and down with respect to said road surface;
means for moving said circular cutting tool up and down with respect to said road surface for cutting said road surface;
means for directing a stream of water at said cutting tool as it cuts said road surface;
and means for directing a stream of compressed air at a newly-cut hole in said road surface to clear it of debris and water.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 07/305,844Filed 2 Feb 1989
Granted: 13 Feb 1990
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

E01C 23/0946
Rotary, e.g. circular-saw joint cutters: specially for forming recesses to receive marking materials or markers, e.g. cutters for milling traffic…
B27B 33/20
Sawing tools for saw mills, sawing machines, or sawing devices: edge trimming saw blades or tools combined with means to disintegrate waste
B28D 1/186
By milling, e.g. channelling by means of milling tools: tools therefor, e.g. having exchangeable cutter bits
E01C
Construction of, or surfaces for, roads, sports grounds, or the like