Abstract: A pressure cooker for use in microwave ovens includes a microwave permeable bowl shaped container, a microwave permeable dome cover, and a steel locking ring permanently attached to the cover for maintaining the container and cover in fluid-tight seal during use. A safety valve, formed of flexible tubing, encounters a projection of the container and is deformed into a closed configuration responsive to movement of the cover, relative to the container, toward a locking position. A pressure regulator valve, consisting of a metal core surrounded by an elastically deformable casing, is positioned over a pressure control opening in the cover to maintain a selected operating pressure level in the pressure cooker. A pressure indicator and relief assembly, contained in a pressure release opening through the cover, indicates positive pressure in the chamber and is ejected in the event of an abnormally high pressure inside the housing.

Abstract: A coffee brewing appliance for making coffee by the percolation method in microwave ovens. The coffee maker is provided with a perforated metal enclosure with rounded edges to contain and protect the ground coffee particles from burning or charring which would otherwise be induced by microwave energy. The perforations are small enough to exclude microwave energy. The coffee maker is also provided with a housing which is microwave transmissive and which separates and insulates the metal portion from the microwave oven bottom and side walls. The housing and pump structures enhance the percolator pump action.

Abstract: Locking mechanism for a mechanically driven, low profile, portable turntable for use in cooking ovens, especially microwave ovens, for rotating foodstuffs while cooking. The low profile turntable includes a spring which varies the height of the rotating portion of the turntable with respect to the base between a first predetermined position when there is no food or the like on the turntable and a second predetermined position when there is food on the turntable. The locking mechanism includes notches and prongs located on the rotating portion and base portion of the turntable which engage each other when the turntable is in the first predetermined position to prevent rotation of the turntable.

Abstract: A mechanically-driven, low-profile, portable turntable for use in cooking ovens, especially microwave ovens, for rotating food stuffs while cooking. All moving parts, except the power spring used to drive the turntable are formed from low loss plastic and the spring is contained in a microwave reflective case to preclude overheating thereof. The low profile is achieved by providing a unique drive mechanism for the turntable in which the power spring driven gear is made to partially surround and envelop the spring case. Further, the gear train cooperating with the main power spring driven gear and with a speed-controlling governor is effectively "wrapped" about the spring case in a concentric fashion with the individual gears in the gear train being vertically overlapped.

Abstract: A portable turntable apparatus for use in microwave ovens which is used as a supporting base for a container of food which is cooked within the oven and adapted to gradually rotate the same, the apparatus including a motor including metallic materials which motor is mounted in and enclosed by a metal housing and an outer enclosure comprising a cover and base of non-metallic material to prohibit electrical arcing between the motor and the oven walls. The housing is provided with smooth outer surfaces and a minimal sized aperture opening to allow a driving connection between the motor and the enclosure cover.

Abstract: A portable air circulating apparatus for use in cooking ovens which is used to create air currents in the oven which transfer heat to cooking foodstuffs to promote more rapid and more uniform cooking or baking, the apparatus including a motor, fan blade and housing of metallic materials selected from a class of heat resistant materials.

Abstract: A portable turntable apparatus for use in microwave ovens which is used as a supporting base for a container of food which is cooked within the oven and adapted to gradually rotate the same, the apparatus including a motor including metallic materials which motor is mounted in and enclosed by a metal housing and an outer enclosure comprising a cover and base of non-metallic material to prohibit electrical arcing between the motor and the oven walls. The housing is provided with smooth outer surfaces and a minimal sized aperture opening to allow a driving connection between the motor and the enclosure cover. The motor is a spring motor having an improved centrifugal governor.

Abstract: A portable air circulating apparatus for use in cooking ovens which is used to create air currents in the oven which transfer heat to cooking foodstuffs to promote more rapid and more uniform cooking or baking, the apparatus including a motor, fan blade and housing of metallic materials selected from a class of heat resistant materials.

Abstract: A portable turntable apparatus for use in microwave ovens which is used as a supporting base for a container of food which is cooked within the oven and adapted to gradually rotate the same, the apparatus including a motor including metallic materials which motor is mounted in and enclosed by a metal housing and an outer enclosure comprising a cover and base of non-metallic material to prohibit electrical arcing between the motor and the oven walls. The housing is provided with smooth outer surfaces and a minimal sized aperture opening to allow a driving connection between the motor and the enclosure cover.