Patent ID: 8177456

Claim:
A pavement milling sled of the type that upholds a rotating pavement milling drum as the sled travels over pavement preselected for milling, said milling sled comprising: laterally-separated left and right runners, each of said runners having, respectively, a lead end oriented toward the front of said sled and a lower face configured for sliding travel on the surface of the pavement, said lower faces of said runners being substantially coplanar and thereby defining a floor of said sled; and a milling frame mounted between said runners, said milling frame circumscribing a milling region, the milling region extending from front to back over the milling drum, front-to-back rotation of the milling drum in said milling region dislodging pavement located in the path of forward travel of said sled below said floor thereof, carrying pavement over the milling drum, pulverizing dislodged pavement into granules, and depositing pulverized pavement granules to the rear of said sled, said milling frame comprising: a guard plate forward of the milling drum that reduces pavement lift-up, thereby contributing to more efficient pulverization of pavement into desirably-sized granules; left and right milling region sidewalls extending upwardly from said floor of said sled on opposite sides of said milling region; and an adjustable discharge baffle between said milling region sidewalls at the back of said milling region in close proximity to said floor of said sled, also the discharge baffle is in close proximity to the milling drum to confine fragments of pavement within the milling region for pulverizing into granules of a desirable small size, the adjustment of the proximity of the discharge baffle to the floor and the milling drum controls granule size.