Abstract: Disclosed herein are grinding machines for forming a trench. Embodiments relate to a grinding machine with a grind head and a vehicle mount. The grind head includes a housing body and a grinding drum. The vehicle mount is configured to attach the housing body to a vehicle. One embodiment of the disclosure relates to a trunnion attachment configured to attach the housing body to a vehicle such that the housing body is configured to roll about a roll axis oriented in a travel direction relative to the vehicle mount. The roll axis is proximate an initial contact point of the blade set. In another embodiment, a caster attachment is configured to attach the housing body to a vehicle such that the housing body is configured to yaw about a yaw axis oriented in an upward direction relative to the vehicle mount.

Abstract: Embodiments of the disclosure relate to an applicator for an adhesive primer. The applicator includes a tank configured to hold the adhesive primer. The applicator also includes a peristaltic pump, having an inlet and an outlet, and a spray nozzle. A first conduit extends from an interior of the tank to the inlet of the peristaltic pump, and a second conduit extends from an outlet of the peristaltic pump to the spray nozzle. Embodiments of the present disclosure also relate to a method of applying adhesive primer to a road surface using the applicator. In the method, the adhesive primer is pumped from the tank containing the adhesive primer through the peristaltic pump to the spray nozzle. Further, the adhesive primer is sprayed from the spray nozzle onto the road surface while the applicator moves across the road surface.

Abstract: Disclosed herein are vehicle mounted grinding machines adaptable to ground contours. Embodiments relate to a grinding machine with a vehicle mount configured to attach a housing body, including a grinding drum to a vehicle. One embodiment of the disclosure relates a pair of guides on opposing sides of a blade set of a grinding drum, where each of the pair of guides is horizontally aligned with the grinding drum. In another embodiment, the housing body is configured to roll about a travel direction relative to the vehicle mount. In another embodiment, the grinding machine includes an alignment motor configured to laterally translate the housing body relative to the vehicle mount and perpendicular to a travel direction.