| 摘要 |
A self-contained module is mounted in an electrified van truck and powered thereby and has an air conveying tube, compressed air hoses and electrical wires that are extensible therefrom through a modified panel section of the truck so as to supply conditioned air, operating compressed air and electrical outlets to workmen in a manhole or other underground working area. Air is passed vertically through the module from the vented top of the truck over a heat exchanger or refrigeration coil and conveyed to the workmen through the extensible tube which is locked in a collapsed position within the module for storage and transportation. An air compressor supplies a volume of compressed air which air is directed to a receiver from which low pressure dry air and high pressure air, selectively admixed with a lubricator, are regulatingly passed through the air hoses that are mounted on automatic recoil reels in the module and have outer ends carrying air chucks with a remote control switch for the compressor being provided.
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