This invention relates to a fresh air ventilation system comprising of ventilation units provided in upper portion of rail car so as to admit fresh air into air duct under ceiling fitted with air diffusers exhaust, openings and a switch gear system.

This invention relates to an air conditioned tracked combat vehicle comprising of air conditioner compressor operated by engine of the vehicle wherein condenser is connected to said compressor and a plurality of evaporator units through refrigerant line.

This invention relates to a wireless remote monitoring system comprising of a wireless remote monitoring unit connected to microcontroller provided in each coach wherein the unit is in communication with a wireless remote base station.

This invention relates to a compact floor-mounted package air conditioner for driver cabs of rail vehicles under passenger seats adjacent to wall of the driver"s cab discharges conditioned air therein through a vertical duct wherein said air conditioner is provided with a plurality of apertures in its front side for...