Abstract: This invention relates to methods of providing uninterruptible, regulated, single phase power to a critical single phase load when such power is derived from two of the phases of a polyphase power source. This invention describes a dual primary ferroresonant transformer which provides regulated and isolated voltage to a single phase critical load, when powered by a plurality of phases from a polyphase power source, and whereby a loss of electrical power to either a first or a second primary does not disturb the single phase power output voltage.

Abstract: A software management system of an intelligent power conditioner with backup system option employing trend analysis for early prediction of AC power line failure. An AC line power conditioner utilizing a microprocessor based control system for providing suitable alarms when an operating input AC line is defective or the trend of measured deficiencies predicts line power failure and for initiating an inverter control signal when an inverter module is attached as an option. The software controlled system analyzes the input and output voltages, provides analysis of input voltage surges and sags, measures transient amplitude and transient pulse width, counts glitches and dropouts, measures frequency, and identifies each defect and computes associated trends, stores all accumulated data in a Log Buffer for digital printout, and then provides appropriate alarms to a user.

Abstract: A collapsible personal watercraft canopy which when extended, provides protection from the weather and support for the watercraft occupants, and also provides lift when the watercraft is in motion, reducing water resistance and which when closed is folded forward and stored on the forward upper hull surface of the watercraft, thus providing protection from sea spray while remaining attractive.