Abstract: An antenna system having a dish, a heating element and a shaped plate. The dish has a concave shape on one side and a generally convex shape on the opposite side. The shaped plate has the heating element applied to a first side. The shaped plate has a second opposite side. The shaped plate is coupled to the opposite side of the dish. The shaped plate being formed from a flat plate having at least one slot cut therein, each slot having edges that are overlapped to thereby cause the flat plate to become the shaped plate.

Abstract: A method of determining a condition of a heater cable, the method including the steps of providing an electrical voltage to the heater cable; and analyzing electrical signals generated in the heater cable to determine the condition of the heater cable.

Abstract: A revolving door deicer/dryer system including a floor grate having a bottom side and a heating system associated with the bottom side of the floor grate. The heating system includes at least one shaped plate and at least one heating element serpentinely routed on the at least one shaped plate.

Abstract: An air dehydrator system for supplying a source of dehydrated air includes an offsite data management system; at least one data network; and an air dehydrator located remote from the offsite data management system. The dehydrator includes a housing containing at least one drying canister; a pressurized air source; and a control circuit coupled with the pressurized air source. The control circuit is also in communication via the at least one data network with the offsite data management system. The control circuit controls operation of the pressurized air source dependent upon control by the offsite data management system.

Abstract: An apparatus for determining the integrity of an antenna system, including a controller, at least one valve operationally connected to the controller, a source of pressurized gas, at least one microwave antenna and a pressure sensor. The at least one microwave antenna is fluidly connected to the pressurized gas by way of the at least one valve. The pressure sensor is in communication with the controller. The pressure sensor senses the pressure of the pressurized gas. The controller is configured to check for a gas leak in the at least one microwave antenna by checking for a change in the pressure with the at least one valve being alternatively opened and closed.

Abstract: An antenna system having a dish, a heating element and a shaped plate. The dish has a concave shape on one side and a generally convex shape on the opposite side. The shaped plate has the heating element applied to a first side. The shaped plate has a second opposite side. The shaped plate is coupled to the opposite side of the dish. The shaped plate being formed from a flat plate having at least one slot cut therein, each slot having edges that are overlapped to thereby cause the flat plate to become the shaped plate.

Abstract: An air dehydrator system for supplying a source of dehydrated air includes an offsite data management system; at least one data network; and an air dehydrator located remote from the offsite data management system. The dehydrator includes a housing containing at least one drying canister; a pressurized air source; and a control circuit coupled with the pressurized air source. The control circuit is also in communication via the at least one data network with the offsite data management system. The control circuit controls operation of the pressurized air source dependent upon control by the offsite data management system.

Abstract: An apparatus for determining the integrity of an antenna system, including a controller, at least one valve operationally connected to the controller, a source of pressurized gas, at least one microwave antenna and a pressure sensor. The at least one microwave antenna is fluidly connected to the pressurized gas by way of the at least one valve. The pressure sensor is in communication with the controller. The pressure sensor senses the pressure of the pressurized gas. The controller is configured to check for a gas leak in the at least one microwave antenna by checking for a change in the pressure with the at least one valve being alternatively opened and closed.

Abstract: An electrical receptacle including a housing having an inwardly directed side and an electrical resistor thermally coupled to the inwardly directed side of the housing.

Abstract: A floor heating system including a sub-floor, a plurality of fasteners, a first heater conductor assembly and a second heater conductor assembly. The first conductor assembly including a first resistive conductor having a first length, first and second ends, and two low resistance conductors. The two low resistance conductors being respectively connected to each of the first and second ends. The second heater conductor assembly including a second resistive conductor having a second length, first and second ends, and two low resistance conductors. The two low resistance conductors being respectively connected to each of the first and second ends of the second resistive conductor. The low resistance conductor that is connected to the first end of the first resistive conductor being connected in a serial fashion to the low resistance conductor that is connected to the first end of the second resistive conductor. The first length being approximately a first integer multiple of the second length.

Abstract: A revolving door deicer/dryer system including a floor grate having a bottom side and a heating system associated with the bottom side of the floor grate. The heating system includes at least one shaped plate and at least one heating element serpentinely routed on the at least one shaped plate.

Abstract: A ground fault interrupter, including a current difference sensor and a current generator electrically coupled to the current difference sensor. The current generator provides a predetermined difference current to the current difference sensor. At least one contactor is electrically coupled to the current difference sensor. A controller is electrically coupled to the current difference sensor, the current generator and at least one contactor. The controller operates at least one contactor.

Abstract: An electrical resistance heating cable, including a resistance heating wire having a resistive conductor, an insulation at least partially surrounding said resistive conductor; and an end. A crimp connector is connected to the end. A thermally conductive sleeve at least partially surrounds the end and is positioned between the crimp connector and the insulation.

Abstract: A gutter assembly for use on a roof includes a gutter, a cover over the gutter, and a heater plate disposed under the cover. The cover includes a bottom surface which is at least partially covered with a heat absorbing material. The heater plate carries at least one heater.

Abstract: A snow melting system including a controller, a first heater supplying heat under the control of the controller, the first heater supplying heat at a power density, a moisture detection apparatus located apart from the first heater, the moisture detection apparatus communicatively coupled to the controller and a second heater located proximate to the moisture detection apparatus, the controller directing power to the second heater at an other power density, the other power density substantially the same as the power density.

Abstract: A cut-to-length heating system including a heating cable having a first conductor with a first resistivity and a second conductor with a second resistivity. The heating cable having a first end and a second end with the first conductor being electrically connected to the second conductor at the first end. The first resistivity substantially higher than the second resistivity. An average power limiting device electrically connecting the first conductor and the second conductor at the second end.

Abstract: An ice and snow melting heater control assembly including at least one sensor, at least one heater element and a controller communicatively coupled with the at least one sensor and the at least one heater element, the controller directing status information about at least one sensor to the at least one heater element.

Abstract: A snow melting system including a controller, a first heater supplying heat under the control of the controller, the first heater supplying heat at a power density, a moisture detection apparatus located apart from the first heater, the moisture detection apparatus communicatively coupled to the controller and a second heater located proximate to the moisture detection apparatus, the controller directing power to the second heater at an other power density, the other power density substantially the same as the power density.

Abstract: An ice and snow melting heater control assembly including at least one sensor, at least one heater element and a controller communicatively coupled with the at least one sensor and the at least one heater element, the controller directing status information about at least one sensor to the at least one heater element.