Abstract: A scroll machine has an intermediate pressure cavity which is operable to open and close a leakage path between the discharge zone and the suction zone of the scroll machine. The leakage path is closed when intermediate pressurized fluid is supplied to the cavity and the leakage path is open when the cavity is open to the suction zone of the compressor. A valve which can be mechanical or electrical is used to open and close a passageway extending between the cavity and the suction zone of the machine. Biasing means is located within the scroll machine in order to control the rate at which the intermediate pressurized fluid is bled to the suction zone of the compressor.

Abstract: A scroll machine has an intermediate pressure cavity which is operable to open and close a leakage path between the discharge zone and the suction zone of the scroll machine. The leakage path is closed when intermediate pressurized fluid is supplied to the cavity and the leakage path is open when the cavity is open to the suction zone of the compressor. A valve which can be mechanical or electrical is used to open and close a passageway extending between the cavity and the suction zone of the machine.

Abstract: Bulk and accessibility problems in a motor control unit for installation in a motor control center are eliminated in a unit having a housing (10) in the shape of a rectangular solid and provided with a top wall (14), a bottom wall (16) spaced from the top wall (14), a rear wall (12) and a front (20). A plurality of motor control instrumentalities (24), (26), (36) are located within the housing (10) and are mounted to at least one of the walls (12), (14), (16) in close proximity to the rear wall (12). A side wall (22) is located to one side of the top, bottom and rear walls (12), (14), (16). A pivot (78) mounts the side wall (22) for pivotal movement about an axis generally parallel and in proximity to the rear wall (12). A disconnect switch (104) is carried by the side wall (22) to be disposed in the housing (10) in one position of movement of the side wall (22) relative thereto and a partial front wall (80) is provided for the housing and carried by the side wall (22).

Abstract: The disclosure describes a scroll compressor which incorporates a spring biased floating seal to facilitate the start-up for the compressor. The spring biased floating seal opens a discharge to suction leakage path before and during start-up for the compressor. After a few revolutions of the scrolls of the compressor the floating seal is biased against the load of the spring to close the leakage path due to pressurized working fluid of the compressor working against the biasing of the springs.

Abstract: Disclosed are several embodiments of a stopping device operable between the drive shaft and/or orbiting scroll of a scroll compressor and a fixed wall forming part of the compressor, for the purposes of automatically engaging the wall upon reverse operation of the compressor to thereby quickly stop such reverse operation. Damage to the compressor in the event of powered reverse is also prevented, either by permitting the machine to run free or by quickly stopping it. Also disclosed are several ways to facilitate start-up with weak motors.

Abstract: A hermetically sealed compressor has a fan for cooling the motor of the compressor. The compressor utilizes the refrigerant vapor inside the hermetic shell to cool the motor. The fan is attached to the end of the motor rotor and crankshaft to circulate the suction gas of the compressor around and through the motor rotor and motor stator to absorb heat and then directs the suction gas against the hermetic shell in a spiralling motion for transferring heat to the shell which in turn transfers heat to the atmosphere.

Abstract: According to one aspect of the invention, a free-weight exercise apparatus is provided that includes a left standard and a right standard that are removably joined in spaced-apart relationship by a cross connector. The left and right standards are preferably generally triangular in shape. According to another aspect, an apparatus is provided for assisting a person with dead-lift type exercises. The apparatus includes left and right lifter assemblies, each of which has an upper bar and a lower bar, the bars being maintained in a parallel, spaced-apart relationship by two vertically oriented piston-cylinder units. A spring is positioned co-axially around each of the piston-cylinder units. One of the ends of one of the two piston-cylinder units of each assembly is pivotally connected to one of the bars and the other ends of the two piston-cylinder units are rigidly connected to the bars, whereby binding of the piston-cylinder units is prevented.

Abstract: An apparatus which accurately maps and detects contaminants within interior surfaces is provided. The apparatus finds use in supporting decontamination operations by providing on-site chemical analyses defining the condition of contaminated areas and monitoring the progress of clean-up operations. An optical vision system is used to accurately map the surface to be investigated or treated as a reference. Analytical probes are used to sample the mapped surface to detect inorganic and organic contaminants in situ. Automated controls which manipulate the analytical probes and high speed analytical equipment, such as a high speed gas chromatograph, are optionally used to take large numbers of samples quickly and remotely. The optical vision system tracks the position of the analytical probes, providing an accurate map of the location of the contaminants.

Abstract: Methods for treating produce to minimize browning upon subsequent processing, handling and/or storage wherein the processing involves exposing produce, such as fruits, vegetables and tubers, and particularly potatoes, to discoloration inhibitors including cysteine, calcium chloride, sodium acid pyrophosphate and/or a sulfiting agent in synergistic amounts so as to result with a treated product containing less than about 30 ppm sulfite, and preferably less than about 10 ppm or essentially no sulfite, which may be stored for extended periods of time without exhibiting browning which would otherwise occur unless the produce were treated to have a sulfite content substantially greater than 30 ppm. Dehydrated, storage stable produce containing less than about 30 ppm sulfite, and preferably less than about 10 ppm or essentially no sulfite.

Abstract: Novel reactive carbodiimide compounds and their method of preparation are disclosed. These reactive carbodiimide compounds are especially useful in automotive paint compositions and more particularly in low volatile organic content (VOC) automotive paint compositions.

Abstract: An earth-penetrating synthetic image radar system includes a frequency generator, a transmitter, a microprocessor-based timing and frequency controller, a reference receiver, a parallel polarized receiver, an orthogonal polarized receiver, a digitizer, a calibration processor, a position measurement reference, and an image processor. A plurality of frequency synthesizers are utilized within a single frequency generator to transmit a fast-stepped synthetic image containing a series of discrete frequencies. A switch is used to select between the outputs of the synthezisers for control of the transmitter's frequency output. With a first synthesizer of a frequency f.sub.1 selected, a second synthesizer is being directed digitally to change to the next step in the frequency stepping sequence, frequency f.sub.2.

Abstract: A data fusion workstation provides an apparatus and method for realizing the full potential of geophysical and remote sensing by mathematically integrating sensors with each other. Sensor data from each of a plurality of sensor types are related mathematically to each other through a common site model to produce a fused picture with quantified accuracy. Using the concept of pseudo-data, information in sensor data is made equivalent to data in a statistical correlation model, allowing fusion of model information with sensor data during a data inversion step. The process of data fusion comprises several processing steps, which are executed by various microprocessors in a recursire/distributed/parallel-architecture platform. These steps comprise geophysical inversion, geostatistical Kriging, application of statistical information concepts, implementation of a square root information smoother, and application of likelihood techniques.

Abstract: A process for making dehydrated potato products from potato flakes so that they can be sulfite-free by mixing the potato flakes with a sufficient amount of water to increase their moisture content to a predetermined level, lowering the temperature of the moistened potato flakes to a temperature and for a period of time sufficient for retrogradation of free soluble starch contained in the potato flakes, reducing the size of the potato flakes in a manner to minimize breakage of potato cell walls, and drying the resulting potato product. The dehydrated potato product can be reconstituted without using a boiling liquid to make a dough for french fries or to make a mashed potato product.

Abstract: Apparatus for disinfecting water to make it virtually microbe-free and maintaining it in a continuous microbe-free condition for use at a center for dental instruments and the other apparatus by ozonized water. Water is ozonized and provided on both the dentist's side and dental assistant's side of a dental unit which includes a variety of dental instruments such as drills, syringes and an expectoration bowl. At least one water reservoir is connected through fluid conduits with such instruments. An ozone producing device is connected with the water reservoir and the ozone level in the fluid conduits between the water reservoir and the instrument center and apparatuses is controlled so that the ozone level at the water discharge openings at the dental instruments and other apparatus is zero or substantially zero.

Abstract: Methods for treating produce to minimize browning upon subsequent processing, handling and/or storage wherein the processing involves exposing produce, such as fruits, vegetables and tubers, and particularly potatoes, to discoloration inhibitors including cysteine, calcium chloride, sodium acid pyrophosphate and/or a sulfiting agent in synergistic amounts so as to result with a treated product containing less than about 30 ppm sulfite, and preferably less than about 10 ppm or essentially no sulfite, which may be stored for extended periods of time without exhibiting browning which would otherwise occur unless the produce were treated to have a sulfite content substantially greater than 30 ppm. Dehydrated, storage stable produce containing less than about 30 ppm sulfite, and preferably less than about 10 ppm or essentially no sulfite.

Abstract: Pre-formed millwork article for attachment to a building wherein the article has a core composed of a rigid filler material, such as an expandable polystyrene, a body portion composed of a rigid foamed material, such as polyurethane, and an exterior coating layer. The body has an inner surface which is adjacent to the core and an outer surface. The exterior coating layer is adjacent to the outer surface of the body. The coating layer can be a paint. The method for manufacturing the pre-formed millwork article consists of: (a) spraying an exterior coating layer in a mold; (b) heating the coating layer and the mold in order to cure the coating layer; (c) pouring a foamable material in the mold over the cured coating layer; (d) placing a filler material into the mold over the foamable material; (e) alllowing the foamed material to foam and harden; and (f) removing the article from the mold.

Abstract: A refrigeration compressor is disclosed which incorporates an improved valve plate assembly having selected portions thereof bowed outwardly to form discrete raised surface portions thereon. These raised surface portions serve to initially increase the clamping force on the gasket means disposed between the valve plate and head or compressor housing to thereby insure a fluid tight seal is maintained during operation of the compressor. Further the valve plate assembly incorporates dual suction valves oriented in side by side relationship and secured to the valve plate at opposite ends. This arrangement offers improved gas flow to the compression chamber by substantially reducing competition between adjacent valves.

Abstract: Pre-formed millwork article for attachment to a building or the like wherein the article has a core composed of a rigid filler material, such as an expandable polystyrene, a body portion composed of a rigid foamed material, such as polyurethane, and an exterior coating layer. The body has an inner surface which is adjacent to the core and an outer surface. The exterior coating layer is adjacent to the outer surface of the body. The coating layer can be a paint. The method for manufacturing the pre-formed millwork article consists of: (a) spraying an exterior coating layer in a mold; (b) heating the coating layer and the mold in order to cure the coating layer; (c) pouring a foamed material in the mold over the cured coating layer; (d) placing a filler material into the mold over the foamed material; (e) allowing the foamed material to harden; and (f) removing the article from the mold.

Abstract: This is a process of fabricating turbine blades for combustion turbines. It is an improvement to the type of process where a mold containing molten metal is cooled in a controlled fashion such that solidification occurs slow enough to allow single crystal growth beginning at the airfoil end. In the improved process solidification is monitored and magnetic mixing of the remaining molten metal is started at approximately the beginning of solidification of said root section and at approximately the same time the rate of cooling of said blade is increased to a rate faster than at which single crystal growth occurs. Grain boundary strengthener (preferably carbon) can be added at approximately the same time mixing is begun. A blade is produced with a single crystal airfoil section and a fine grained root section and without a substantially inhomogeneous portion at the interface between the airfoil and root sections.