Abstract: The invention relates to hinged supports using torsion bars for the doors of microwave ovens. For light-weight doors, the torsion bars extend beyond the sides of the doors and interlock with the oven structure to constitute the sole supporting means. For heavier doors, the torsion bars are provided with pivot shaft extensions mounted in bearings in the doors, which interlock with the oven structure. The torsion bars are preloaded to bias the doors closed in the light-weight door constructions, and operate in all cases to reduce the dead weight of the doors when in their open, horizontal positions. The side extensions interlockingly engage brackets in the oven structure aided by the weight of the doors, and permit the doors to be lifted readily therefrom.

Abstract: A radiant energy collector panel comprises a plurality of outwardly facing open ended channels extending inwardly from the outer face of the panel for receiving radiant energy directed at the outer face of the panel wherein each channel includes an inwardly extending concave interface surface and an opposed inwardly extending convex interface surface. The opposed inwardly extending concave and convex interface surfaces provide increased areas exposed to the radiant energy, absorb and substantially reflect and amplify radiant energy of larger angle of incidence inwardly to the inner portion of the channel, substantially absorb radiant energy of smaller angle of incidence of the primary and reflected radiant energy, and reabsorb reradiated energy of lower spectral frequency therefrom, to provide a collector panel of relatively high efficiency. Various forms of such collector panels are disclosed.

Abstract: Each of a pair of drawer channel members is affixed to a correspondong side of a drawer having spaced opposite sides and opens outward toward a frame having a chamber therein accommodating the drawer and having spaced opposite sides, the sides being parallel. Each of a pair of frame channel members is affixed to a corresponding side of the frame in the chamber and opens inward toward the drawer and is positioned adjacent the corresponding drawer channel member. The channel members are positioned parallel. Each of a pair of extension bars is slidably positioned between a corresponding one of the drawer channel members and the adjacent frame channel member. Each of the channel members and each of the extension bars is shaped in a manner whereby each of the extension bars restrains, or is restrained by, the corresponding drawer channel member and frame channel member in sliding next-adjacent relation. Bores are formed through the extension bars.