Apparatus and method for cutting asphalt, concrete and other materials
First Claim
1. An apparatus for dry cutting materials, said apparatus having a forward direction of operation, comprising:
- a) a circular saw, including;
i) a housing having front and back ends;
ii) means for conveying said housing over the surface of the material;
iii) rotatable shaft extending from said housing;
iv) a blade fixed to said shaft, said blade having an upper portion and a lower portion;
v) means for rotating said shaft and blade in a direction that upcuts the material when the saw is conveyed in the forward direction;
b) a blade guard mounted to said housing, including;
i) a cover surrounding the upper portion of said blade;
ii) a shoe surrounding the lower portion of said blade;
iii) an adjustable connection interface between said cover and said shoe; and
, c) vacuum collection means connected to said blade guard.
1 Assignment
0 Petitions
Accused Products
Abstract
An apparatus for dry cutting asphalt, concrete and other hard construction materials. The apparatus has a forward direction of operation and includes a circular saw, blade guard, and vacuum collection means. The circular saw includes a housing having front and back ends, a rotatable shaft extending from the housing, a blade fixed to the shaft, and means for rotating the shaft and blade in a direction that upcuts the material when the saw is conveyed in the forward direction. The blade guard is mounted to the housing. The blade guard includes a cover surrounding the upper portion of the blade, a shoe surrounding the lower portion of the blade, and an adjustable connection interface between the cover and the shoe. The vacuum collection means is connected to the blade guard.
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Citations
21 Claims
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1. An apparatus for dry cutting materials, said apparatus having a forward direction of operation, comprising:
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a) a circular saw, including;
i) a housing having front and back ends;
ii) means for conveying said housing over the surface of the material;
iii) rotatable shaft extending from said housing;
iv) a blade fixed to said shaft, said blade having an upper portion and a lower portion;
v) means for rotating said shaft and blade in a direction that upcuts the material when the saw is conveyed in the forward direction;
b) a blade guard mounted to said housing, including;
i) a cover surrounding the upper portion of said blade;
ii) a shoe surrounding the lower portion of said blade;
iii) an adjustable connection interface between said cover and said shoe; and
,c) vacuum collection means connected to said blade guard. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An apparatus for dry cutting a groove in road surfaces, comprising:
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a) a flat saw having a masonry blade, a forward direction of operation, means for rotating said shaft and blade in a direction that upcuts the road surface when the saw is conveyed in the forward direction, and means for setting the blade at different cut depths;
b) an adjustable blade guard, having;
i) front and back ends;
ii) primary collecting means at the front end of the blade guard for collecting road dust before it contacts the road surface;
iii) secondary collecting means at the back end of the blade guard for collecting road dust on the road surface and in the groove;
iv) means for completely surrounding the portion of said blade above the road surface at each cut depth setting. - View Dependent Claims (13, 14, 15)
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16. A method of dry cutting materials, comprising the steps of:
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a) providing a saw having a blade and a forward direction of operation;
b) upcutting the material with the saw;
c) collecting the dust created during cutting by applying a vacuum proximate the projection point between the blade and the material surface. - View Dependent Claims (17)
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18. A method of dry cutting and cleaning a road surface, comprising the steps of:
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a) providing a saw having a road-surface blade and a forward direction of operation;
b) upcutting the road surface with the saw;
c) collecting road dust projected from the projection point between the blade and road surface before it contacts the road surface;
d) cleaning the trailing groove and adjacent road surface of any residual road dust by directing a flow of air onto the groove and adjacent road surface and vacuum collecting the residual road dust. - View Dependent Claims (19, 20)
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21. A blade guard for a flat saw having a forward direction of operation and a vacuum collection means, comprising:
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a) means for mounting said blade guard mounted to the saw;
b) a cover surrounding the upper portion of the blade of the saw;
c) a shoe surrounding the lower portion of the blade of the saw;
d) an adjustable connection interface between said cover and said shoe;
e) front and back ends;
f) an air intake port in said back end; and
,g) a discharge port in said front end connected to said vacuum collection means.
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Specification