US Patent 7874743 Pressure equalizing equipment housing

A pressure equalizing housing may be used to house equipment (e.g., one or more mechanical and/or electronic devices). The pressure equalizing housing may include a pressure equalization device to provide pressure equalization between an internal pressure inside of the housing and an ambient pressure outside of the housing. The pressure equalization prevents relatively humid air outside of the housing from passing into the housing and thus prevents or substantially minimizes condensation inside of the housing.