Abstract: A microwave heating appliance 10 has a base 12 mounted in an opening 18 formed in a countertop 16. Base 12 includes a mount, such as flange 20, which supports the base on the countertop. A removable cover 14 sits on the base 12 above countertop 16. The cover and base form a microwave heating chamber. A deck 26 is in base 12 and is approximately level with countertop 16. Deck 26 and countertop 16 form a continuous counter surface when cover 14 is fully removed from base 12. A microwave generating device 24 generates microwave radiation which passes through deck 26 to the heating area. A control system 80 is employed to control microwave generating device 24 to only allow operation when cover 14 is properly connected to base 12.

Abstract: Mechanical apparatus for compressing, expanding or otherwise working a fluid. The apparatus includes a rotor rotatably mounted in a housing. The rotor has an interior and rotor ports through which a working fluid flows into the rotor interior. Two or more cam structures are rotatably mounted within the rotor interior. A working volume is defined between interior surfaces of the rotor and adjacent cams. The cams are maintained in a desired orientation by a synchronizer. Apparatus according to the invention are useful as engines, compressors and in other fluid working applications.