Abstract: It is possible to perform reset free operation in devices having polarization state controllers by employing specific sequences of phase shifters and couplers. In particular, sequences comprising a coupler/phase shifter/coupler or phase shifter/coupler/phase shifter formed in, for example, a semiconductor substrate, e.g. silicon substrate, is used to form the polarization state controller. For example, a sequence functions as a quarter wave plate equivalent while two combined sequences function as a half wave plate. Moreover, sequences functioning as wave plates more general than quarter wave plates are advantageously employed. Control of the couplers and phase shifters of these sequences yield reset free or reset free, fully deterministic operation.

Abstract: A method for classifying patterns of failcodes on a semiconductor wafer, in accordance with the present invention, includes determining failcodes for chips on the wafer and checking adjacent chips for each chip on the wafer having a failcode to determine a failcode pattern having a defined number of chips.

Abstract: A method for providing a compressed bit fail map, in accordance with the invention includes the steps of testing a semiconductor device to determine failed devices and transferring failure information to display a compressed bit map by designating areas of the bit map for corresponding failure locations on the semiconductor device. Failure classification is provided by designating shapes and dimensions of fail areas in the designated areas of the bit map such that the fail area shapes and dimensions indicate a fail type.

Abstract: A setting device for a control surface for guided ammunition, including a spindle which is driven by a drive motor, a nut being seated on the spindle, which nut incorporates a projection on its outer cylindrical circumference, with which projection there engages a shaft of the control surface. The nut is guided within a sleeve, whereby the tolerance between the nut and the spindle, and the sliding tolerance or fit between the nut and the sleeve are selected such that the stresses or loads which are transmitted by the shaft of the control surface are assumed by the sleeve, and in which the projection engages into an axial slot in the sleeve.

Abstract: The apparatus monitors lap formation at a pair of rolls guiding a slubbing or sliver in a drafting arrangement for spinning machines. In the event of a lap or coil forming, for example, on a pressure roll, a piston rod of a piston is shifted away until a switching element touches a contact edge or region of a switching sleeve. A cylinder housing encircling the switching sleeve and otherwise electrically separated from the piston is thus short-circuited with the piston. Since the switching sleeve and piston are separately connected to a control unit, a switching function is effected in the control unit by this short-circuit and the drafting arrangement is thereby stopped. The switching sleeve is slidably guided on a guide rod mounted at an upper part in such a manner that the frictional resistance is greater than the weight of the switching sleeve.

Abstract: An arrangement for continuously determining the density of an elongated strip-shaped web of fiber sliver in the course of a spinning process in order to generate control signals for use in controlling the operation of machine elements operative for equalizing the distribution of the fiber sliver includes two of stepped rollers which together delimit, at a their nip region, a confining space for the passage of the fiber sliver web therethrough. One of the rollers is mounted on a support for rotation about a stationary axis and is driven in rotation, while the other roller is mounted on the support for free rotation about another axis which is parallel to the stationary axis and defines an imaginary plane therewith, as well as for movement along the imaginary plane against a spring force away from the one roller, so that the fiber sliver is compressed and moves the other roller to a greater or lesser degree away from the one roller as it passes through the confining space, depending on its density.

Abstract: The present invention relates to a gripper apparatus on a ring spinning or ring twisting machine for gripping empty and/or wound bobbin tubes using pegs mounted on a support beam extending along the machine and inserted into the interior space of the bobbin tubes, the bobbin tubes being gripped by pressing each bobbin tube and the peg inserted into it against each other. The pressing generally is effected using compressed air. According to the invention at each peg a cylindrical extension made of elastically bendable material is provided, which extension extends from the front end of the peg towards the tip thereof.This arrangement yields the advantage that in case of faulty positioning of bobbins, tubes a head-on collision of the peg front end on the upper bobbin tube rim, with accordingly grave consequences, such as e.g. damage to the support beam or blowout of the compressed air, no longer can occur.

Abstract: A bobbin exchange apparatus on a ring spinning or a ring twisting machine contains a transporting belt extending substantially horizontally in the longitudinal direction of the machine. The transporting belt is provided with bobbin holders and, viewed relative to the machine, is inclined downward towards the front. According to the invention, there are provided supporting means extending in the longitudinal direction of the machine. These supporting means are contacted by the front side of the empty bobbin tubes placed onto the transporting belt. The invention permits a considerable space saving to be achieved in such a manner that, in comparison to known machines, more space is available for the spindle bearings or bolsters and there can be used a spindle rail which fulfils the requirements of sufficient stability. Furthermore, the invention allows an improved spinning geometry to be chosen.

Abstract: An apparatus for sorting conical bobbin tubes for textile machines with their tip ends located to one side comprises a supply device supplying individual bobbin tubes transversely of their axes along a guide table and between two lateral guide edges. The distance of the lateral guide edges from the guide table is equal to the mean bobbin tube diameter and the mutual distance between which diminishes, seen in the direction of the bobbin tube supply, from a value greater than the bobbin tube length to a value smaller than the bobbin tube length. During their movement in the supply direction the bobbin tubes are forced to move longitudinally in the direction of their tip end, which permits sorting them with their tip end to one side.