Abstract: According to one aspect, embodiments herein provide a UPS comprising a UPS input configured to be coupled to an AC power source and to receive input AC power, an interface configured to be coupled to a DC power source and to receive backup DC power, a UPS output configured to provide output power derived from at least one of the input AC power and the backup DC power to a load, a converter comprising a converter input coupled to the UPS input, a converter output, a first converter path coupled between the converter input and the converter output, and a second converter path coupled between the converter input and the converter output, and a controller configured to operate the first converter path and the second converter path to convert the input AC power into DC power and provide the DC power to the converter output.

Abstract: According to one aspect, embodiments herein provide a UPS comprising a UPS input configured to be coupled to an AC power source and to receive input AC power, an interface configured to be coupled to a DC power source and to receive backup DC power, a UPS output configured to provide output power derived from at least one of the input AC power and the backup DC power to a load, a converter comprising a converter input coupled to the UPS input, a converter output, a first converter path coupled between the converter input and the converter output, and a second converter path coupled between the converter input and the converter output, and a controller configured to operate the first converter path and the second converter path to convert the input AC power into DC power and provide the DC power to the converter output.

Abstract: At least one aspect is directed to a transfer switch including a first input to couple a first multiphase low voltage electrical supply to the transfer switch, and a second input to couple a second multiphase low voltage electrical supply to the transfer switch. The transfer switch also includes a first set of switches in electrical communication with the first input and a second set of switches in electrical communication with the second input. A control module monitors and controls operation of both the first set of switches and the second set of switches to detect a malfunction of any switches included in at least one of the first set of switches and the second set of switches and prevent the first input from being placed in electrical communication with the second input.

Abstract: At least one aspect is directed to an uninterruptible power supply that includes a first input to receive a first input voltage from a first voltage source, a second input to receive a second input voltage from a second voltage source, and a boost circuit coupled to the first input and the second input. The boost circuit is configured to provide a positive output DC voltage and a negative output DC voltage derived from at least one of the first input voltage and the second input voltage. The uninterruptible power supply is configured such that in a back-up mode of operation, the negative output DC voltage is derived from the second input voltage using a circuit that includes at least two controlled switches coupled in series.

Abstract: At least one aspect is directed to a transfer switch including a first input to couple a first multiphase low voltage electrical supply to the transfer switch, and a second input to couple a second multiphase low voltage electrical supply to the transfer switch. The transfer switch also includes a first set of switches in electrical communication with the first input and a second set of switches in electrical communication with the second input. A control module monitors and controls operation of both the first set of switches and the second set of switches to detect a malfunction of any switches included in at least one of the first set of switches and the second set of switches and prevent the first input from being placed in electrical communication with the second input.

Abstract: At least one aspect is directed to an uninterruptible power supply that includes a first input to receive a first input voltage from a first voltage source, a second input to receive a second input voltage from a second voltage source, and a boost circuit coupled to the first input and the second input. The boost circuit is configured to provide a positive output DC voltage and a negative output DC voltage derived from at least one of the first input voltage and the second input voltage. The uninterruptible power supply is configured such that in a back-up mode of operation, the negative output DC voltage is derived from the second input voltage using a circuit that includes at least two controlled switches coupled in series.

Abstract: A combination brush and paste dispenser for dispensing a measured amount of paste from a tube having a hollow elongated housing with a hinged outlet cover mounted on one end so that a brush with a handle can exit from that end. There is a first compartment in the housing for receiving the tube of paste which is connected to a paste applying means at the end of the housing adjacent to the hinged cover. There is also provided a carriage slidably disposed in the housing, having a compression paddle which presses against the side of the tube in response to movements of the brush and handle. The paddle is automatically indexed inward against the side of the tube as the brush is used so that paste is continuously applied to the brush for each use. In another embodiment, a lead screw is provided with a sliding clamp against the back of the tube so that the paste can be applied manually instead of automatically as in the first embodiment.

Abstract: The invention relates to a safety closure cap for a device for dispensing a liquefied gas propellant including one or more active ingredients such as is used for insecticides or exterminating purposes. More particularly, the device, which is commonly known as an "Aerosol Bomb" comprises a container of conventional type having a discharge nozzle which when pressed will activate a valve to release the contents of container as a spray. The container has an annular flange at its upper end and the cap, according to the invention, has a cylindrical side wall with means at its lower edge to interengage with the annular flange to retain the cap in position yet permit relative longitudinal movement of the cap with respect to the nozzle.

Abstract: The invention relates to a safety cap for a device for dispensing a liquefied gas propellent including one or more active ingredients such as is used for insecticides or exterminating purposes. More particularly, the device, which is commonly known as an "Aerosol Bomb" comprises a container of conventional type having a discharge nozzle which when pressed will activate a valve to release the contents of the container as a spray. The container has an annular flange at its upper end and the cap, according to the invention, has a cylindrical side wall with means at its lower edge to interengage with the annular flange to retain the cap in position yet permit relative longitudinal movement of the cap with respect to the nozzle.

Abstract: At least one aspect is directed to a transfer switch including a first input to couple a first multiphase low voltage electrical supply to the transfer switch, and a second input to couple a second multiphase low voltage electrical supply to the transfer switch. The transfer switch also includes a first set of switches in electrical communication with the first input and a second set of switches in electrical communication with the second input. A control module monitors and controls operation of both the first set of switches and the second set of switches to detect a malfunction of any switches included in at least one of the first set of switches and the second set of switches and prevent the first input from being placed in electrical communication with the second input.