REDUCED VOLUME SONIC NOISE ALERT PATTERN GRINDER & METHOD
A pavement grinding apparatus moves along a direction of travel and includes a cutting assembly. The cutting assembly has a grinding carriage; the grinding carriage including a rotating arbor having cutting elements. A control wheel is in contact with the pavement and connected to the grinding carriage to impart a cyclical up and down movement to the grinding carriage. The control wheel includes equally spaced apart lobes on the periphery of the control wheel that move the arbor in a sinusoidal up and down pattern.
1 . A pavement grinding apparatus moving along a direction of travel, comprising:
a cutting assembly comprising:
a grinding carriage; the grinding carriage including a rotating arbor having a plurality of cutting elements;
a control wheel in contact with the pavement and connected to the grinding carriage for imparting a cyclical up and down movement to the grinding carriage.
2 . A pavement grinding apparatus according to claim 1 , the control wheel comprising a plurality of equally spaced apart lobes on the periphery of the control wheel.
3 . A pavement grinding apparatus according to claim 1 , comprising a plurality of the control wheels mounted on an axle transverse to the direction of travel.
4 . A pavement grinding apparatus according to claim 1 , wherein the control wheel is ahead of the arbor along the direction of travel.
5 . A pavement grinding apparatus according to claim 2 , wherein the control wheel comprises a plurality of sections of reduced radius alternating with the lobes on the periphery of the control wheel.
6 . A pavement grinding apparatus according to claim 2 , comprising a plurality of the control wheels mounted on an axle transverse to the direction of travel.
7 . A pavement grinding apparatus according to claim 6 , wherein the lobes of each of the plurality of the control wheels is laterally aligned.
8 . A pavement grinding apparatus according to claim 1 , wherein the cutting assembly is mounted to a truck chassis.
9 . A pavement grinding apparatus according to claim 1 , wherein the cutting assembly is mounted to a truck chassis and extends rearward from the truck chassis.
10 . An apparatus according to claim 8 , further comprising a first motor driving the truck chassis and a second motor driving the arbor.
11 . An apparatus according to claim 5 , wherein the radius of the control wheel increases and decreases in a sinusoidal pattern.
12 . A pavement grinding apparatus moving along a direction of travel, comprising:
a cutting assembly comprising:
a grinding carriage; the grinding carriage including a rotating arbor having a plurality of cutting elements;
a control wheel in contact with the pavement and connected to the grinding carriage; the periphery of the control wheel comprising a sinusoidal pattern of increasing and decreasing radius imparting a cyclical up and down movement to the grinding carriage.
13 . A pavement grinding apparatus according to claim 12 , wherein the cyclical up and down movement imparted to the grinding carriage by the control wheel creates a sinusoidal pattern of spaced apart depressions in the pavement.
14 . A pavement grinding apparatus according to claim 12 , wherein the cutting assembly is mounted to a truck chassis.
15 . A pavement grinding apparatus according to claim 12 , the control wheel comprising a plurality of equally spaced apart lobes on the periphery of the control wheel.
16 . A pavement grinding apparatus according to claim 15 , wherein the control wheel comprises a plurality of sections of reduced radius alternating with the lobes on the periphery of the control wheel.
17 . A pavement grinding apparatus according to claim 15 , comprising a plurality of the control wheels mounted on an axle transverse to the direction of travel.
18 . A pavement grinding apparatus according to claim 17 , wherein the lobes of each of the plurality of the control wheels is laterally aligned.