Abstract: The invention relates to a method of manufacturing a roller bearing comprising a cage made from a thermoplastic polymer-containing material. By cross-linking the polymeric material its properties, such as form retention and compatibility with lubricants, are improved. A roller bearing provided with a cage made from suitably cross-linked thermoplastic polymer-containing material can be used even at temperatures above the melting point of the polymer. According to the invention a roller bearing is manufactured by forming a cage from thermoplastic polymer-containing material, providing it with rotating bodies and only then cross-linking the material. This avoids damage to an otherwise already rigid cage during the insertion of the rotating bodies.

Abstract: Method and system of rejuvenating pressurized fluid solvents used for cleaning a substrate in a pressurized vessel. A primary flow of the pressurized fluid solvent is continuously cycled from the pressurized vessel through a series of filters to remove insoluble and soluble contaminants, and then returned to the pressurized vessel. A secondary flow of the pressurized fluid solvent, preferably equivalent to less than about 40% of the primary flow, is directed either continuously or intermittently during the cleaning operation to an evaporator to evaporate the pressurized fluid solvent of the secondary flow into a vapor and to separate contaminants therefrom. The vapor from the evaporator is then either liquified by a compressor or condenser to create rejuvenated pressurized fluid solvent and redirected to the pressurized vessel for further use, or vented to atmosphere and replaced by new pressurized fluid solvent from a supply tank.

Abstract: A baffle assembly for a seed metering mechanism that is mounted in combination with a seed hopper holding a supply of seeds that are to be dispensed into a furrow with regularity by the seed metering mechanism. The seed metering mechanism includes a two-piece housing divided into a seed chamber and a vacuum chamber by a rotatable disc having a series of throughopenings or holes arranged circumferentially adjacent the perimeter of the disc. The disc picks up seeds from the seed chamber and carries them around to a discharge area of the seed metering mechanism whereat they are released for gravitational deposit into the furrow in the ground below. A seed delivery chute gravitationally directs the seeds from the seed hopper to an opening defined by the housing from which the seeds are deposited into the seed chamber.

Abstract: A particulate matter or seed dispensing system for an agricultural implement having a mobile frame with a plurality of row units mounted to the frame. The seed dispensing system includes an upright storage hopper that is adapted to be carried by the frame and has the capacity for holding a large quantity of particulate matter such as seed. A bin is adapted to be carried on each row unit for holding a quantity of particulate matter or seed. Notably, each bin holds substantially less than the quantity of particulate matter adapted to be held in the storage hopper. A metering unit is adapted to be arranged on each row unit proximate a furrow opener of the row unit. The metering unit is arranged in material receiving relation relative to a respective bin on each row unit. The dispensing system of the present invention further includes an apparatus for delivering particulate matter from the hopper individually to each bin as a function of the quantity of particulate matter or seed material in the bins.

Abstract: A vacuum seed metering mechanism arranged in combination with a seed hopper for uniformly dispensing seeds to the ground. The seed metering mechanism comprises a rotational distributor disc provided with a circular row of openings toward a periphery of the disc. The disc carries seeds from a seed reservoir to a seed discharge area under the influence of pressure differential. The disc is rotatably mounted in a housing whose interior is divided by the seed disc into the seed reservoir, on one side of the seed disc, and a suction chamber, lying around a portion of the path of movement of the openings in the seed disc. A salient feature of the present invention relates to the provision of an apparatus for imparting vibrations to the housing for facilitating the release of seeds from the openings in the disc in the discharge area of the seed.

Abstract: Flake freezing machine includes an evaporator for producing frozen flakes using a freezable liquid from a liquid source. The evaporator includes a cast aluminum cylindrical structure having an inner surface defining an interior chamber and an outer surface. A stainless steel helical tubing assembly having an inlet and an outlet is embedded inside the cylindrical structure between the inner surface and the outer surface. Refrigerating fluid is circulated through the tubing assembly to cool the inner surface to a temperature sufficient to freeze the liquid. Positioned inside the interior chamber is a rotatable shaft, which supports a liquid distribution pan having radially extending nozzles for distributing the liquid onto the inner surface of the cylindrical structure so as to freeze as a frozen sheet and a blade member for removing the frozen sheet from the inner surface of the cylindrical structure in the form of frozen flakes.

Abstract: The invention relates to a method of extracting water from the ambient air by condensation of air moisture, characterized in that a heat-insulating partition is cooled on one side and heated on the other side by external supply of energy, creating a natural convective air draft on the heated side of the partition, the convective air draft being channelled substantially like a chimney draft and used to recover part of the energy while water is extracted on the cooled side by condensation of air moisture. The invention further relates to an apparatus for carrying out said method. The object underlying the invention is to ensure an appropriate afflux of air and a high degree of efficiency by optimum exploitation of energy.

Abstract: Hand-held apparatus for performing medical calculations includes a compact housing capable of being held within a hand of an operator. Provided in the housing is a data entry pad for selecting one of the medical calculations and entering data required for execution of the selected medical calculation, and a scanner and converter to input ECG waveforms as machine readable image data. A controller including a memory having the medical calculations stored therein is provided in the housing in communication with the data entry pad and the converter. The controller is configured to retrieve the selected medical calculation from the memory, provide prompts for entry of the data required for execution of the selected medical calculation, and provide a request for validation of each data entry made using the data entry pad.

Abstract: The invention relates to a bearing arrangement and parts suitable for said arrangement, such as a roller bearing, which is suitable for the absorption of shock loads. To that purpose those parts which come into contact with each other under shock loads or great loads are provided on one of the adjacent outer contact surfaces facing each other with a friction-reducing coating. Such a coating may contain molybdenum or bronze and is suitably applied by means of a thermal spraying method, such as wire spraying. The bearing arrangements provided by the invention have a significantly longer operational life.