Abstract: An improved emergency power system is disclosed for providing electrical power to a load such as a blowout preventer of a petroleum drilling apparatus. The improved emergency power system comprises a thermal battery having an anode and a cathode with a separator containing an electrolyte disposed therebetween. An internal heat layer is located in proximity to the separator containing the electrolyte. A squib is provided for activating the internal heat layer. The thermal battery remains dormant until the squib is energized to ignite the squib enabling the heat layer to render the electrolyte molten thereby activating battery to provide electrical power to the load. The squib may be energized remotely, mechanically or electrically.

Abstract: An AC/DC power converter includes an input port configured to receive an AC power signal, a first transformer coupled to the input port, the first transformer comprising first and second primary windings and at least a first secondary winding, and a second transformer coupled to the input port, the second transformer comprising third and fourth primary windings and at least a second secondary winding. The first primary winding of the first transformer is coupled in series with the third primary winding of the second transformer, the second primary winding of the first transformer is coupled in series with the fourth primary winding of the second transformer, and the first secondary winding and the second secondary winding are coupled in parallel.

Abstract: A water heater system having a running water inlet through which running water flows in and a hot water outlet through which hot water heated in a heat exchanger is discharged is disclosed. The water heater system may include a first connection pipe connecting a gap between the running water inlet and an entry of the heat exchanger, a second connection pipe connecting a gap between an outlet of the heat exchanger and the hot water outlet; a bypass pipe connecting a gap between the first connection pipe and the second connection pipe, a bypass valve installed to the bypass pipe so as to control the direction of water flowing through the bypass pipe, and a controller, in a hot water usage mode, controlling the bypass valve so that the water moves from the first connection pipe to the second connection pipe through the bypass pipe, and in an inner circulation mode, controlling the bypass valve so that the water moves from the second connection pipe to the first connection pipe through the bypass pipe.

Abstract: A turn down ratio (TDR) damper which controls an amount of gas and air flowing in the TDR damper and deliver the controlled gas and air to a turbo fan is disclosed. The TDR damper includes: air passages comprising a first air passage and a second air passage, the first air passage and the second air passage separately formed so that the air move through each path; gas passages comprising a first gas passage and a second gas passage, the first gas passage and the second gas passage separately formed so that the gas move through each path; and opening and closing means for opening and closing the second air passage and the second gas passage at the same time. The air passages and the gas passages may be separately formed and reached outlets connected to the turbo fan so that the air and gas may be delivered to the turbo fan through a separate path.

Abstract: An improved emergency power system is disclosed for providing electrical power to a load such as a blowout preventer of a petroleum drilling apparatus. The improved emergency power system comprises a thermal battery having an anode and a cathode with a separator containing an electrolyte disposed therebetween. An internal heat layer is located in proximity to the separator containing the electrolyte. A squib is provided for activating the internal heat layer. The thermal battery remains dormant until the squib is energized to ignite the squib enabling the heat layer to render the electrolyte molten thereby activating battery to provide electrical power to the load. The squib may be energized remotely, mechanically or electrically.

Abstract: The invention relates to a battery (1) comprising a casing having one or more gas vents (3) and a manifold (4) arranged to collect gas emerging from the gas vents wherein the manifold is fixed to the casing using a double sided adhesive gasket (6).

Abstract: The invention relates to a battery comprising a casing having at least one handle, which is formed integrally with the casing and is at least partially recessed into the upper surface of the casing.

Abstract: A method of manufacturing a battery includes providing a cell for a battery having alternating positive and negative electrode plates, each of the electrode plates being separated by an electrically insulative separator layer. Each of the positive and negative electrode plates includes a projecting tab extending from an adjacent upper portion thereof, the projecting tabs of the positive plates being generally aligned, and the projecting tabs of the negative plates being generally aligned. The method comprises attaching a conductive connecting strap to the projecting tabs The method comprises applying a cap material onto the connecting positive strap and allowing the cap material to spread and drip to the exposed portions of the projecting tabs and the adjacent upper portions of the negative and positive plates and separator material. The cap material hardens to provide a cap.

Abstract: A frame assembly for receiving and supporting batteries in at least one horizontal row comprises a pair of generally parallel spaced apart, aligned base supports with each base support having a front end and a rear end. Four vertical corner supports, including a front pair and a rear pair are secured to the base supports with the front pair of corner supports being generally equally spaced from the rear pair of corner supports. At least one pair of horizontal supports are secured to the corner supports. The horizontal support pair includes a front horizontal support and a rear horizontal support. Each horizontal support has two ends with each end of the front horizontal support being secured to one of the corner supports of the front pair of corner supports and with each end of the rear horizontal support being secured to one of the corner supports of the rear pair of corner supports.

Abstract: A battery for use with a modular battery assembly is provided. The battery includes two poles, with each pole including a dual terminal. Each dual terminal includes a first connector and a second connector. The battery is adapted to be mounted in either of a first housing, with a wiring board having a prewired circuit located thereon connected to slide-in terminals arranged on the wiring board, and a second housing without a prewired circuit. The slide-in terminals arranged on the wiring board are adapted to be located in complementary positions to the first connectors on the battery such that when the battery is slidably received in the first housing, the first connectors are adapted to be received in the complementarily positioned slide-in terminals, and when the battery is located in the second housing, the second connectors are connectable using jumpers such that the battery is adapted to be used interchangeably in the first and second housings.