Abstract: The present disclosure provides for drag reduction on a moving object through the atmosphere, thus increasing fuel efficiency. This is accomplished by attaching an inflatable boattail (i.e. drag reducer) to the aft face or rear end of a vehicle or trailer, thus delaying the flow separation to a point further downstream and mitigating the intensity of the negative pressure on the aft face.

Abstract: The present disclosure provides an airstream deflector fairing comprising a front or fore end having a leading edge attached to an undercarriage of a wheeled vehicle. The fairing further includes a rear or aft end and a lower bottom portion of the fairing includes a panel facing the ground at an angle which in turn directs an airstream passing thereunder downwardly and outwardly relative to the undercarriage and substantially at an area below a trailing axle downstream from the fairing. The lower bottom panel includes an angle of declination relative to the undercarriage from about 12 degrees to about 24 degrees.

Abstract: A method for identifying a fault condition associated with a power line conductor of an electrical power distribution network. The method determines if a load current carried by the conductor is above a minimum load current, determines a learned phase angle relationship between the load current and a source signal, determines a load current magnitude, determines a real-time phase angle relationship between the load current and the source signal and indicates a fault condition when the real-time phase angle relationship is within a predetermined number of angular degrees of the learned phase angle relationship and when the load current magnitude exceeds a fault-indicating current.

Abstract: The present disclosure provides for drag reduction on a moving object through the atmosphere, thus increasing fuel efficiency. This is accomplished by attaching an inflatable boattail (i.e. drag reducer) to the aft face or rear end of a vehicle or trailer, thus delaying the flow separation to a point further downstream and mitigating the intensity of the negative pressure on the aft face.

Abstract: The present disclosure provides an airstream deflector fairing comprising a front or fore end having a leading edge attached to an undercarriage of a wheeled vehicle. The fairing further includes a rear or aft end and a lower bottom portion of the fairing includes a panel facing the ground at an angle which in turn directs an airstream passing thereunder downwardly and outwardly relative to the undercarriage and substantially at an area below a trailing axle downstream from the fairing. The lower bottom panel includes an angle of declination relative to the undercarriage from about 12 degrees to about 24 degrees.

Abstract: A vacuum-type electrical switching apparatus (10) for high voltage electrical power. A vacuum pressure condition in a vacuum pressure space (21) surrounding electrical contact points (18) is monitored and movement of the contact points between open and closed positions is automatically prevented when the pressure exceeds a predetermined threshold in order to avoid destructive arcing between the points. A sensor (32) provides a vacuum signal (34) responsive to the vacuum pressure condition. A controller (36) automatically inhibits movements of the contact points when the vacuum signal indicates that the vacuum has degraded. A contactor (38) may be placed in series with power supply (28) and a solenoid (24) used to move the contact points, with the contactor being automatically opened by the controller in response to the degraded vacuum condition.

Abstract: A method for identifying a fault condition associated with a power line conductor of an electrical power distribution network. The method comprises determining a load current carried by the conductor is above a minimum load current, determining a learned phase angle relationship between the load current and a source signal, determining a load current magnitude, determining a real-time phase angle relationship between the load current and the source signal and indicating a fault condition when the real-time phase angle relationship is within a predetermined number of angular degrees of the learned phase angle relationship and when the load current magnitude exceeds a fault-indicating current.