Abstract: A heated battery cell holder includes an upper cell holder having a plurality of holders each configured for securing an upper portion of one of a plurality of battery cells, respectively. A lower cell holder includes a plurality of holders each configured for securing a lower portion of one of the battery cells, respectively. An upper heating element is embedded in the upper cell holder for heating the upper portion of each of the battery cells, and a lower heating element is embedded in the lower cell holder for heating the lower portion of each of the battery cells.

Abstract: A heated battery cell conductor includes an upper conductor having a plurality of tabs each configured for direct physical contact with a battery terminal at a top end of one of a plurality of battery cells, respectively. A lower conductor includes a plurality of tabs each configured for direct physical contact with a battery terminal at a bottom end of one of the battery cells, respectively. The upper conductor and the lower conductor each include a conductor substrate configured for conducting an electrical current, a thermally conductive and electrically isolated layer disposed on the conductor substrate, a channel formed in the thermally conductive and electrically isolated layer, and a resistive heating element disposed in the channel such that the upper conductor and the lower conductor each conduct heat to the battery cells via the resistive heating element.

Abstract: A battery module includes a monoblock comprising one or more battery cells, a first power path electrically coupled to the monoblock and electrically couplable to one or more terminals, a switching device coupled to the first power path and configured to open and to close a circuit thereof, a control system that controls the switching device, and a second power path electrically coupled to the monoblock. The second power path is configured to provide power to the control system. An absence of a voltage signal from the second power path detected by the control system causes the switching device to open to electrically disconnect the one or more terminals of the first power path. Detection of the voltage signal from the second power path by the control system may cause the switching device to close to electrically connect the one or more terminals of the first power path.

Abstract: A method and apparatus for improving the performance of production-injection wells whereby a pump (35), driven by a hydraulic turbine (32) sharing the same central shaft (33, 34), is run and set in an oil-producing well. The oil enters the annulus of the well from the production zone and is induced into the pump to be forced to the wellhead; the injection water is forced down the wellbore to drive the turbine whereafter the injection water exhausts through the pump to be injected into the underlying aquifer thereby providing additional pressure support to the producing zone.

Abstract: The invention relates to a bridging platform arrangement (20) for bridging a gap (16) between a railway rail (10) and an adjacent ground surface (14). The bridging platform arrangement (20) includes a bridging plate (58) and a mounting arrangement for mounting the bridging plate (58) between the railway rail (10) and the ground surface (14). In use, the mounting arrangement permits displacement of the bridging plate (58) between two positions—a first rest position in which the bridging plate (58) extends between respective upper surfaces of the railway rail (10) and the ground surface (14); and a second displaced position in which the bridging plate (58) is displaced below the first position so as to not interfere with the passage along the railway rail (10) of a wheel (1) of a railway vehicle.

Abstract: The invention relates to a bridging platform arrangement (20) for bridging a gap (16) between a railway rail (10) and an adjacent ground surface (14). The bridging platform arrangement (20) includes a bridging plate (58) and a mounting arrangement for mounting the bridging plate (58) between the railway rail (10) and the ground surface (14). In use, the mounting arrangement permits displacement of the bridging plate (58) between two positions—a first rest position in which the bridging plate (58) extends between respective upper surfaces of the railway rail (10) and the ground surface (14); and a second displaced position in which the bridging plate (58) is displaced below the first position so as to not interfere with the passage along the railway rail (10) of a wheel (1) of a railway vehicle.

Abstract: A method and apparatus for improving the performance of production-injection wells whereby a pump (35), driven by a hydraulic turbine (32) sharing the same central shaft (33, 34), is run and set in an oil-producing well. The oil enters the annulus of the well from the production zone and is induced into the pump to be forced to the wellhead; the injection water is forced down the wellbore to drive the turbine whereafter the injection water exhausts through the pump to be injected into the underlying aquifer thereby providing additional pressure support to the producing zone.

Abstract: A double-barrier metal-to-metal seal assembly includes a seal gasket (3) having an outer flexible seal element (6) and an inner flat rib (8). The assembly also includes a pair of hubs (4, 5) each having an internal machined profile characterised by a tapered profile (7) which, when the hubs (4, 5) are mechanically set, provides an interference fit against the outer flexible element (6) of the seal gasket (3) so as to provide an outer seal, and an inner profile (9) comprising a plurality of concentric circular nibs (9) machined on the hubs (4, 5) which, when the hubs (4, 5) are being mechanically set, progressively embed themselves (9) to a pre-determined depth into the rib (8) of the seal gasket (3) to effect an inner seal. The embedment is limited by the face-to-face abutment of the hubs (4, 5) outside the locus of the outer seal during the mechanical imposition of preload.