Abstract: A retractable breaker bar is distanced from a cutting head by actuation of a hydraulic ram in a system for grinding material.

Abstract: A steering mechanism and guidance system for a milling attachment device provides steering capability without impeding cutting depth control. The steering mechanism has at least one wheel that is rotated by an actuating mechanism such as an extending cylinder, synchronized actuators, or the like. The steering mechanism may be integrated with depth control by using a parallelogrammic structure with pivot points to assist in the depth control or may operate independent of and without impeding depth control.

Abstract: A steering mechanism for a milling attachment device provides steering capability without impeding cutting depth control. The steering mechanism has at least one wheel that is rotated by an actuating mechanism such as an extending cylinder, synchronized actuators, or the like. The steering mechanism may be integrated with depth control by using a parallelogrammic structure with pivot points to assist in the depth control or may operate independent of and without impeding depth control.

Abstract: A milling attachment is attachable to a host vehicle so that the host vehicle provides propulsion of the milling attachment. The milling attachment has a milling drum, a discharge baffle, and a baffle actuator. The milling drum is adjustably positioned vertically to determine milling depth. The discharge baffle is positioned rearward of the milling drum and pivotally adjustable to maintain a desired space between the milling drum and the discharge baffle at any of the vertical positions of the milling drum. The baffle actuator causes the pivoting of the discharge baffle. The milling attachment may further comprise a hood with a bit access hatch that provides access to the milling drum. The milling attachment may also further comprise a connection securing assembly for securing the milling attachment to the host vehicle by securing a bucket of the host vehicle within a bucket slot in the milling attachment.

Abstract: A steering mechanism for a milling attachment device provides steering capability without impeding cutting depth control. The steering mechanism has at least one wheel that is rotated by an actuating mechanism such as an extending cylinder, synchronized actuators, or the like. The steering mechanism may be integrated with depth control by using a parallelogrammic structure with pivot points to assist in the depth control or may operate independent of and without impeding depth control.

Abstract: A milling attachment device has a rotating hood and provides both cutting depth control and bit access by rotating the rotating hood. The rotating hood is rotated by an actuating mechanism such as an extending cylinder, a slew drive, or drive rings. The rotating hood may also have a skid foot and/or a wheel to assist in the depth control. The milling attachment device may be connected to a host vehicle so that it can be maneuvered into position for milling or maintenance.

Abstract: A pavement milling sled upholds a rotating pavement milling drum during travel over pavement preselected for milling. Coplanar lower faces of laterally-separated left and right runners configured for sliding travel on the surface of the pavement define a sled floor. A milling frame mounted between the runners circumscribes a milling region, wherein rotation of the milling drum dislodges pavement located in the path the sled below the sled floor, pulverizes dislodged pavement, and deposits pulverized pavement to the rear of the sled. Left and right milling region sidewalls extend upwardly from the sled floor on opposite sides of the milling region. A guard plate is secured between the milling region sidewalls forward of the milling region at a distance above the sled floor. A discharge baffle extends between the milling region sidewalls at the back of the milling region in close proximity to the sled floor.

Abstract: In accordance with the invention as embodied and broadly described herein, the present invention features a milling mandrel attachable to a milling device and comprising a primary cylindrical barrel; a plurality of cutting bits removably attached to the primary barrel and arranged about a support base within a cutting/sawing area or segment or sector defined on the primary barrel, wherein the cutting bits are arranged in a predetermined bit pattern via a bit location system and patterned cutting bit system; and a plurality of chunking or milling bits also removably attached to the primary barrel and arranged within a chunking or milling area or segment or sector also defined on the primary barrel and adjacent and operable with each of the cutting or sawing sectors.