Abstract: Systems and methods for providing lifting workers up cell towers are disclosed. The system is useful on “stealth” cellular towers that do not have external ladders or climbing pegs for aesthetic reasons. The system can include a cable, a system of pulleys, and an internal or external winch. The cable can include a counterweight to enable the cable to be paid out from a storage position at the top of the tower down to the ground under its own weight. Workers can attach a harness or a basket to the cable. The winch can then pull the cable, worker, and/or basket to the top of the tower. The winch can be installed on site or can be provided by an on-site service vehicle. The system can also include a fall arrest system to prevent falls in the event of a component failure.

Abstract: Systems and methods for providing lifting workers up cell towers are disclosed. The system is useful on “stealth” cellular towers that do not have external ladders or climbing pegs for aesthetic reasons. The system can include a cable, a system of pulleys, and an internal or external winch. The cable can include a counterweight to enable the cable to be paid out from a storage position at the top of the tower down to the ground under its own weight. Workers can attach a harness or a basket to the cable. The winch can then pull the cable, worker, and/or basket to the top of the tower. The winch can be installed on site or can be provided by an on-site service vehicle. The system can also include a fall arrest system to prevent falls in the event of a component failure.

Abstract: A portable forced air heating unit provided with a filter cover. The filter cover reduces the dust and particulates that may enter the air intake filter of an air compressor or unit. The filter cover deflects particulates carried by the forced air. The filter cover may extend from the air compressor.

Abstract: A lifting assembly may include a base frame; a support assembly coupled to the base frame wherein the support assembly may include a rotating member pivotally coupled to the base frame; a support arm coupled to the rotating member; and a lifting arm coupled to the support arm; and a lifting mechanism that may include a roller shaft; a link arm pivotally coupled to the roller shaft and the support arm; a roller coupled to the roller shaft and the link arm; and a screw coupled to the base frame and threadably coupled to the roller shaft.