Abstract: A cooking oven comprising a housing, a cavity, an oven door, an air plenum, an infrared heating element, and a thermal insulating layer placed between the infrared heating element and the air plenum is disclosed. The infrared hearing element comprises a wire-like heating element shaped in a serpentine-pattern to form a plurality of fingers. The thermal insulating layer comprises a plurality of air channels interconnecting the air plenum and the cavity, and one or more temperature decoupling chambers for thermally insulating the air plenum from the infrared heating element. The air channels are positioned interleavingly between the plurality of fingers so that airstreams coming from the air plenum through each of the air channels into the cavity do not substantially contact and convectively cool the infrared heating element. The temperature decoupling chambers may use air as a thermal insulator.

Abstract: A cooking oven comprising a housing, a cavity, an oven door, an air plenum, an infrared heating element, and a thermal insulating layer placed between the infrared heating element and the air plenum is disclosed. The infrared hearing element comprises a wire-like heating element shaped in a serpentine-pattern to form a plurality of fingers. The thermal insulating layer comprises a plurality of air channels interconnecting the air plenum and the cavity, and one or more temperature decoupling chambers for thermally insulating the air plenum from the infrared heating element. The air channels are positioned interleavingly between the plurality of fingers so that airstreams coming from the air plenum through each of the air channels into the cavity do not substantially contact and convectively cool the infrared heating element. The temperature decoupling chambers may use air as a thermal insulator.

Abstract: An electrodeless or induction ceramic HID lamp includes a ceramic arc body having a generally spheroidal portion enclosing a discharge chamber and an induction coil received around a perimeter portion of the spheroidal portion. At least one leg extends from the spheroidal portion of the arc body. A mounting structure connects the arc body to the surrounding lamp assembly. In one arrangement, a mounting tube is received over at least a portion of the leg, and may further include a light transmissive shroud that also abuts with the induction coil to precisely locate the arc body relative to the coil. In another arrangement, first and second mounting members extend from spaced locations of the arc body, either as pins or legs extending from the spheroidal portion, or radially extending legs from an equatorial portion of the arc body.

Abstract: An electrodeless or induction ceramic HID lamp includes a ceramic arc body having a generally spheroidal portion enclosing a discharge chamber and an induction coil received around a perimeter portion of the spheroidal portion. At least one leg extends from the spheroidal portion of the arc body. A mounting structure connects the arc body to the surrounding lamp assembly. In one arrangement, a mounting tube is received over at least a portion of the leg, and may further include a light transmissive shroud that also abuts with the induction coil to precisely locate the arc body relative to the coil. In another arrangement, first and second mounting members extend from spaced locations of the arc body, either as pins or legs extending from the spheroidal portion, or radially extending legs from an equatorial portion of the arc body.

Abstract: A multi-turn coil formed from a single sheet of conductive material and the method of forming same eliminates the use of a weld. The multi-turn coil includes a single sheet of conductive material having at least a first turn in a first plane, and at least a second turn in a second plane, where the first plane is parallel to the second plane. An interconnecting fold interconnects the first and second turns, and any additional turns. The method of forming a multiple turn coil includes providing a continuous strip of conductive material having at least first and second turns extending through substantially 360° and formed in a first plane. The method further includes displacing at least the first turn from the first plane into generally overlapping, parallel relation with the second turn.

Abstract: Life of a starting conductor or coil in an induction lamp is significantly improved with the present disclosure. A mechanical support supports the starting coil adjacent the arc body of the lamp and has features that allow the starting coil to mount thereon. The mechanical support may be made of a high temperature material such as glass, quartz, or ceramic so that light from the lamp is not blocked. In another embodiment, the starting conductor is protected from oxidation by fully encasing the starting conductor within the high temperature material. In still another embodiment, a thin coating of a high temperature material that may or may not be light transmissive could be used as an alternative manner of support.

Abstract: This disclosure relates to a low mercury content, metal halide lamp having a ceramic arc tube with an aspect ratio ranging from approximately 1.15 up to about 4.75, and having a fill in the arc tube of up to 2 milligrams of mercury per cubic centimeter and up to 10 milligrams of zinc metal and/or zinc/zinc iodide per cubic centimeter.