Abstract: A drive circuit for an electric pump motor is provided. The drive circuit includes an inverter and a contactor. The inverter is configured to supply variable frequency current to the electric motor. The contactor is configured to supply the line frequency current to the electric motor.

Abstract: A drive circuit for an electric motor includes a first filter, a rectifier, an inverter, and a line contactor. The first filter is configured to be coupled to an AC source and produces a filtered line frequency AC signal. The rectifier is coupled to the filter and produces a DC signal from the filtered line frequency AC signal. The inverter is coupled to the rectifier and produces an AC signal on an output node of the inverter. The AC signal is supplied to the electric motor to energize its stator windings. The line contactor is coupled between an output node of the first filter and the output node of the inverter. The line contactor supplies the output node of the inverter directly with the filtered line frequency AC signal to energize the stator windings when the inverter is disabled.

Abstract: A drive circuit for an electric pump motor is provided. The drive circuit includes an inverter and a contactor. The inverter is configured to supply variable frequency current to the electric motor. The contactor is configured to supply the line frequency current to the electric motor.

Abstract: A drive circuit for an electric motor includes a first filter, a rectifier, an inverter, and a line contactor. The first filter is configured to be coupled to an AC source and produces a filtered line frequency AC signal. The rectifier is coupled to the filter and produces a DC signal from the filtered line frequency AC signal. The inverter is coupled to the rectifier and produces an AC signal on an output node of the inverter. The AC signal is supplied to the electric motor to energize its stator windings. The line contactor is coupled between an output node of the first filter and the output node of the inverter. The line contactor supplies the output node of the inverter directly with the filtered line frequency AC signal to energize the stator windings when the inverter is disabled.

Abstract: A visor that is especially useful for motorcycle riders and especially for off-road motorcycle racing. The visor has a sun shade member and a mirror. The mirror is affixed to an under surface of the sun shade member. The mirror has a continuous convex surface with a curvature that is free of discontinuations and step changes. The mirror is spaced an effective distance from the user's eyes and has a lateral span and a longitudinal span that are large enough so that the helmet wearer can simultaneously see approximately the same field of view to a side and rear with each eye by a slight turn and tilt of the user's head while an unobstructed line of sight in the direction of travel is retained. The invention also includes a mirror that can be retrofitted to various sun shade members and a kit for retrofitting the mirror in existing sun shade members.

Abstract: A tapered compression ring for flared tube applications includes a generally ring-shaped body having (a) a gap defining a first end and an opposite second end, (b) a first face, (c) an opposite second face, and (d) a central axis. The first face is tapered at the first end, and the body is twisted so that the first end is offset from the second end along the central axis in a direction away from the first face.

Abstract: A tapered compression ring for flared tube applications includes a generally ring-shaped body having (a) a gap defining a first end and an opposite second end, (b) a first face, (c) an opposite second face, and (d) a central axis. The first face is tapered at the first end, and the body is twisted so that the first end is offset from the second end along the central axis in a direction away from the first face.