Abstract: A roasting apparatus is provided which includes a shaft having a first end adapted to receive an edible wafer via an internal opening in the wafer, a second end, and a retaining portion near the second end that is adapted to removably retain the edible wafer to the shaft. The first end has a first shape adapted to enable the wafer to travel along the first end of the shaft towards the retaining portion with the retaining portion having a second shape different from the first shape and adapted to removably engage the wafer when moved from the first end to the retaining portion such that the shaft may be tilted down relative to the second end without the wafer traveling due to gravity beyond the retaining portion.

Abstract: An elastomeric spring including an elongated elastomeric body defining a longitudinal axis for the spring and having first and second longitudinal ends. An outer surface of the elastomeric body extends between the first and second ends and has four generally planar sides, with each planar side of the outer surface being disposed to one side of and generally parallel to the longitudinal axis of the spring so as to reduce radial bulging of the spring in all directions when an axial load is applied to the spring. The outer surface of the elastomeric body further includes four angled corner sections extending between the first and second ends of the elastomeric body and disposed a substantially common distance from the longitudinal axis of the spring. One corner section is disposed between any two adjoining sides on the outer surface of the elastomeric body.

Abstract: Described herein is a method and apparatus for calibrating an infra red camera at elevated temperatures using a reference surface. The method comprises selecting a normal well-fill condition for pixels in the camera in accordance with normal operating temperatures and stare time (30, 32, 34), using the normal well-fill condition to calculate a selected stare time/surface temperature combination for which selected non-uniform calibration coefficients are determined (36, 38), adjusting and re-adjusting the stare time/surface temperature to obtain adjusted and re-adjusted non-uniform calibration coefficients respectively (40, 42, 44, 46), and determining final non-uniform calibration coefficients for the camera using the selected, adjusted and re-adjusted non-uniform calibration coefficients (48).

Abstract: Described herein is an improved reference surface (10) which can be used for calibrating cooled infra red detectors. The reference surface (10) comprises a plurality of corner cube units (12, 14, 16, 18, 20, 22) which reflect radiation directly incident on them. The surface of each corner cube unit (12, 14, 16, 18, 20, 22) is partially reflective and partially emissive so that, when imaged by a cryogenically cooled detector, the reference surface (10) appears as a black body source at a lower temperature than the actual temperature thereof.