Abstract: Aspects of the invention generally relate to a display sign heating apparatus, method of making and using the same and more particularly to a display sign for preventing or mitigating snow and icing from interfering with the display.

Abstract: A body armor ventilation system comprising a plurality of projections located between a body armor carrier and a wearer's body. The system may further comprise a plate for retrofitting an existing carrier or may be integrated into the carrier. The projections may allow space between the body armor carrier and the wearer's body, allowing air to flow therethrough, which in turn allows the wearer's body heat to dissipate and keeps the wearer cooler. The projections may also provide increased protection from blunt force trauma.

Abstract: A compaction roller machinery assembly (10) suspended from the rear of a bulldozer (12) for compacting surfaces such as sand. The assembly (10) includes a vehicle (12) having a power plant for driving the assembly, a vibratory compaction roller (18) extending in a cantilevered fashion from a pivot axis on the vehicle for compacting a surface and a roller lift assembly (20) mounted to the vehicle (12) and interconnecting the vibratory compaction roller (18) and the vehicle (12) raising and lowering the vibratory compaction roller (18) about the pivot axis between a raised position and a surface engaged position. The vibratory compaction roller (18) includes a roller (22) for rolling and compacting surfaces and a vibration producing mechanism for vibrating the roller to facilitate the compaction of the surfaces.