Abstract: A railroad rail inspection system is provided for use in conjunction with a non-railbound vehicle having an equipment bay. The system comprises a detector carriage adapted for being propelled over a two-rail railroad track by the non-railbound vehicle. A magnetic induction sensor system adapted for magnetic induction inspection of at least one rail of the track is attached to the detector carriage. The system further comprises a data acquisition system in communication with the magnetic induction sensor system, the data acquisition system including at least one data processor adapted for processing induction data received from the magnetic induction sensor system. The system further comprises a power supply system adapted for supplying electrical power to the magnetic induction sensor system. The data acquisition system and the power supply system are configured for disposition and operation within the equipment bay of the non-railbound vehicle.

Abstract: A brush assembly for engaging and conducting electricity to or from a surface is provided. The brush assembly comprises a monolithic, electrically conductive bus block and a bristle holder removably attached to the bus block. The bristle holder is formed as a monolithic block having a plurality of parallel bristle holes formed therethrough. The brush assembly further comprises a plurality of bristle assemblies, each bristle assembly having an elongate, electrically conductive bristle and an electrically conductive bristle cap having a sleeve, the proximal end of the bristle being secured within the sleeve so that the bristle is in electrical communication with the sleeve. At least a portion of the bristle cap of each bristle assembly is removably disposed within an associated bristle hole so that the bristle of each bristle assembly extends through its associated bristle hole and downwardly away from the lower bristle holder surface. Each bristle cap is in electrical communication with the bus block.

Abstract: A hose retractor for gas stations and the like having an arcuate or goose-neck head portion extending through preferably a 90 degree arc and laterally extending from the vertical axis of the vertical standard portion. A removeable pulley-assembly or cartridge arcuately shaped to be inserted through the free end of the head portion, is inserted therein and secured by external bolts or other removeable fasteners when in the operative position. The cartridge preferably includes at least two, axially aligned cartridge pulleys to guide the cord along the head curvature. Upon damage or other need for replacement, the cartridge can be easily removed and replaced by a new cartridge, without the need to replace any other part of the retractor. The retractor standard and head portion according to one aspect of the invention can be made in a single piece with fixed orientation to reduce the costs of manufacture.