Abstract: A retrofit filling station communication system including a fuel dispensing island locatable communications adaptor assembly and a remote communications adaptor and legacy controller assembly including at least POS functionality, arranged to be coupled to existing underground wiring and to facilitate legacy and non-legacy communication at least associated with the POS functionality over the existing underground wiring with the fuel dispensing island locatable communications adaptor assembly and to facilitate legacy communication with pump control electronics via a legacy communications protocol employed by the pump control electronics prior to retrofit.

Abstract: A thermal conducting device removes heat from a power dissipating device installed within a case, and includes a base coupled to the power dissipating device and a translational portion that is movable in a vertical dimension. The translational portion couples at an upper surface to the inner surface of the case panel. A cavity and piston in the base and the translating portion may provide complementary guide surfaces to constrain movement of the translational portion generally to a vertical dimension. A biasing element may urge the translational portion upward. The translational portion and the external panel may allow movement of their respective surfaces relative to one another. The cavity may include a port allowing air to pass into and out of the cavity. The upper surface of the translational portion may be tiltable with respect to the base. An adhesive layer may couple the base and the power dissipating device.

Abstract: A thermal conducting device removes heat from a power dissipating device installed within a case, and includes a base coupled to the power dissipating device and a translational portion that is movable in a vertical dimension. The translational portion couples at an upper surface to the inner surface of the case panel. A cavity and piston in the base and the translating portion may provide complementary guide surfaces to constrain movement of the translational portion generally to a vertical dimension. A biasing element may urge the translational portion upward. The translational portion and the external panel may allow movement of their respective surfaces relative to one another. The cavity may include a port allowing air to pass into and out of the cavity. The upper surface of the translational portion may be tiltable with respect to the base. An adhesive layer may couple the base and the power dissipating device.

Abstract: A railroad vital relay control circuit has a first input for receiving a reference alternating current signal of a selected frequency and a second input for receiving a track alternating current signal having the selected frequency of the reference signal and a predetermined phase and magnitude relationship therewith. A magnetic core provides a logical AND function and has two input arms and an intermediate output arm. There is a winding on each of the input arms and a winding on the output arm. There are frequency tuned voltage limiting circuit elements connecting the first input and a first one of the magnetic core input windings and the second input and the second input winding of the magnetic core. The magnetic core has an output winding on the intermediate arm which is connected to a vital relay. The input windings on the magnetic core are connected to produce flux in the same direction in the output arm.