A microwave oven has a cooking chamber and a microwave generator for supplying microwaves to the cooking chamber. The microwave generator is in the form of a klystron which produces a plurality of electron beams for amplifying microwaves.

The invention is a warewasher comprising a wash chamber, a tank at the bottom of the wash chamber, a heat exchange tube entering the tank through a first port in the tank, traversing the base of the tank, and exiting the tank through a second port. The tube is at a height such that it is submerged when the tank is filled with water. The tube has first and second ends outside the tank, and a gas-fired infrared burner located in the tube adjacent the first end to which a combustible fuel is suppli...

Techniques for automatically laying out directed graphs with clusters of nodes and free nodes. The techniques produce pictorial representations of the graphs in which a node in a cluster and a free node may belong to the same rank in the graph and nodes belonging to more than one cluster may belong to the same rank. The techniques have been added to the well-known DOT system for laying out directed graphs, and include a recursive technique for ranking nodes of the graph, a technique for ordering...

Aggregates, matrices, and composites exhibiting enhanced structural characteristics, together with methods and apparatuses for their manufacture, are disclosed. Many of these embodiments rely on three dimensional reticulation to enhance material property features, such as fracture toughness and resistance to thermal shock.

An air conditioning system for an enclosure in which a heat exchange medium flows in a looped pipe along a wall of the enclosure to and from a temperature regulating unit for heating or cooling the heat exchange medium, the return loop of the pipe being enclosed within an air ventilating shaft spaced from said wall and being provided with fins for directing the air downwardly while the other pipe loop is provided with fins for directing the conditioned air upwardly through an operture in the wal...

In the production of an organosilicon compound by addition of a silicon compound selected from the group consisting of a hydrogenosilane and a hydrogenosiloxane to an olefinically unsaturated organic compound in the presence of a catalytically active platinum compound, the improvement which comprises employing dicarbonyldichloroplatinum as the platinum compound.

In the formation of visible copies of an image, the use of an ion modulating array provided with an asymmetrical photosensitive coating together with means to electrostatically develop the ion image.

Exposure meter using a photodiode, wherein open-circuit voltage of the photodiode is applied to the gate of a field-effect transistor. Between the source of said field-effect transistor and the negative terminal of a power source, a variable resistor is inserted and is interlocked with at least one of the exposure factors of the film sensitivity, the aperture of a photo-lens and the exposure time, so as to vary the value of the resistance of the variable resistor.

In the formation of visible copies of an image, the use of an ion modulating array provided with an asymmetrical photosensitive coating together with means to electrostatically develop the ion image.

There are disclosed various embodiments of a laser in which the dielectric active medium is a rare earth pentaphosphate, for example, neodymium pentaphosphate. The neodymium pentaphosphate laser uses a crystal that is smaller than would be physically possible in prior art neodymium lasers. Another laser of this type employs a mixed crystal of neodymium pentaphosphate and lanthanum pentaphosphate and has the unusual property that no resonator is needed other than its naturally grown end surfaces....