Abstract: A drive unit of a top drive system includes a drive stem having a plurality of ports from an exterior thereof to an interior thereof. A plurality of sliding coupling members is disposed in the ports. A coupling collar encircles the drive stem and has actuation surfaces and recessed surfaces on an interior thereof, wherein the recessed surfaces align with the ports when the coupling collar is in a first position, and the actuation surfaces align with the ports when the coupling collar is in a second position.

Abstract: A drive unit of a top drive system includes a drive stem having a plurality of ports from an exterior thereof to an interior thereof. A plurality of sliding coupling members is disposed in the ports. A coupling collar encircles the drive stem and has actuation surfaces and recessed surfaces on an interior thereof, wherein the recessed surfaces align with the ports when the coupling collar is in a first position, and the actuation surfaces align with the ports when the coupling collar is in a second position.

Abstract: Melt pumps for pressing synthetic melt through a tool are disclosed. An example melt pump for building up pressure for pressing synthetic melt through a tool includes a compressor with two worm conveyors disposed in a housing, a transmission by means of which the worm conveyors are synchronously drivable, and a drive, where the transmission is disposed between the drive and the compressor. In the example melt pump, each worm conveyor in the transmission has an output shaft, and each worm conveyor is coupled to the corresponding output shaft by a coupling. In the example melt pump, the coupling comprises an output gear provided on the output shaft, and a drive gear provided on the worm conveyor and a coupling sleeve gripping the output gear and the drive gear, where the drive gear and the output gear have a different number of teeth.

Abstract: Melt pumps for producing synthetic granules, extruded profiles or molded parts are disclosed. One disclosed example apparatus includes a worm machine to move synthetic melt, a tool for producing granules, an extruded profile or a molded part, and a melt pump separate from the worm machine, where the melt pump is to press synthetic melt through the tool, and where the worm machine transfers the synthetic melt to the melt pump at a lower pressure than the synthetic melt provided by the melt pump to the tool.

Abstract: The present invention provides for assays useful in predicting whether a cancer patient risks suffering erythropoietin-induced tumor progression if treated with erythropoietin. More specifically, one embodiment provides for a validated quantitative reverse transcriptase polymerase chain reaction assay that detects erythropoietin receptor expression, thus indicating whether a cancer patient risks suffering erythropoietin-induced tumor progression if treated with erythropoietin.

Abstract: A method is provided for delivering and processing data subsets from a number of sources to/in a central data processing unit. The data subsets are transferred via an internet interface to the central data processing unit and stored there. The data subsets from different sources are processed to form a shared program and the program is stored in a central memory. The program can be transferred and read using the internet interface. Data concerning the status of the data processing operation in its current updated form is signaled via the internet interface and/or reported back to the sources via a message communication system/service.