Abstract: A food warmer having closed loop heating control has a temperature sensor in a warming zone of the food warmer. The temperature sensor has a rate of heat absorption and a rate of heat loss substantially the same as a food product contained in the warming zone. First and second heat sources provide heat to the warming zone. The heat required to maintain the warming zone at a desired temperature requires heat from both the first and second heat sources. The first heat source is operated continuously while the second heat source is activated and deactivated in closed loop fashion based on input from the temperature sensor to maintain a desired set point temperature of the warming zone.

Abstract: A fryer system has a vat having four sides and a bottom. A plurality of heat exchange tubes extending across the vat. A spray unit having at least one nozzle disposed above the plurality of heat exchange tubes is operably connected to a fluid supply. The spray unit is oriented to direct a flow of fluid onto the sides and bottom of the vat and onto the heat exchange tubes.

Abstract: A fryer system has a tub and a filter screen assembly located in the tub to filter cooking fluid. A filter pan or crumb catcher having a perforated surface is positioned above the tub to receive cooking fluid from a cooking vat of the fryer system. A pan is positioned between the filter pan or crumb catcher and the tub to receive cooking fluid and direct it to the tub, with the pan extending beyond outer edges of the filter screen assembly to substantially prevent the flow of cooking fluid from the filter pan or crumb catcher directly onto the filter screen assembly.

Abstract: A fryer system has a vat having a front wall, back wall, two side walls, and a bottom. The bottom is sloped downwardly from the back wall toward the front wall. A trough extends along the front wall and a drain is located in the trough. In certain preferred embodiments, a spray nozzle is oriented to direct a flow of fluid across the bottom of the vat from the back wall toward the trough.

Abstract: An optical receiver for use with an optical location system that locates a target in a defined area. A spherical lens is placed over the area. The area is divided into sections, with a sensor associated with each section. These sensors receive light transmitted through the lens, and are positioned relative to each other and with respect to the lens, such that each sensor receives emitted light from the same size section if the target is located in its section. The height of each sensor may be adjusted so that each sensor receives light of the same intensity if the target is located in its section.

Abstract: An improved light fixture comprising a housing adapted for tower or pole top mounting and having preferably stacked upper and lower lamp compartments. One reflector in each compartment includes a segment that is located partly behind and partly over a symmetrically positioned lamp included therein so as to reflect light therefrom downwardly and outwardly through a window in a side wall opposite to the reflector. Another reflector similarly located reflects light through a second window in an opposite side wall. Windows in the other two side walls also receive light emanations from the lamp. The axis to the lamp in each compartment is substantially horizontal and is skewed with respect to the side wall windows. The lamp in one compartment is preferably complementarily positioned with respect to the lamp in the other compartment.

Abstract: A light reflector system for an elongated light source and having multiple reflective surfaces, some of which are treated for diffusing light, particularly those surfaces that reflect light at low reflective angles, and some of which are specular or, alternatively, treated for light spread reflection, particularly those surfaces that reflect the image of the lamp source at high reflective angles.

Abstract: This invention pertains to an emergency lighting circuit that operates with a high pressure, gaseous-discharge lamp and associated ballast. When the gaseous-discharge lamp goes out, after once being ignited, sufficient current is supplied to an incandescent light or lights to maintain illumination to the area normally illuminated by the lamp. The device for providing this current may vary, but generally incorporates a voltage breakdown means that receives higher voltage from the ballast when there is failure of the gaseous-discharge lamp than when the arc therein is struck. A preferred embodiment also lights the incandescent lights during initial warm-up of the gaseous-discharge lamp. The incandescent lights may also be used in a cold environment to maintain the gaseous-discharge lamp sufficiently above an ambient temperature level to make possible initial striking of the arc in the lamp when ambient temperature conditions might otherwise prevent it.

Abstract: This invention pertains to an emergency lighting circuit that operates with a high pressure, gaseous-discharge lamp and associated ballast. When the gaseous-discharge lamp goes out, after once being ignited, sufficient current is supplied to an incandescent light or lights to maintain illumination to the area normally illuminated by the lamp. The device for providing this current may vary, but generally incorporates a voltage breakdown means that receives higher voltage from the ballast when there is failure of the gaseous-discharge lamp than when the arc therein is struck. A preferred embodiment also lights the incandescent lights during initial warm-up of the gaseous-discharge lamp. The incandescent lights may also be used in a cold environment to maintain the gaseous-discharge lamp sufficiently above an ambient temperature level to make possible initial striking of the arc in the lamp when ambient temperature conditions might otherwise prevent it.

Abstract: A perimeter lighting system using monosymmetrical quasi-indirect light fixtures recessed in the ceiling of a room, near the walls, to direct light toward the walls and thereby cause it to be reflected from them at optimum elevation for maximum overall lighting of the typical working area in the room, thereby producing a high contrast rendition factor over much of the work task zone.