Abstract: A method of estimating a number of agents needed in a queueing system where each active agent is available to work on several tasks in parallel, includes the steps of obtaining a representation of the queueing system comprising information on all possible states that the queueing system can be in and the intensity rates for the possible transitions between states calculating the resulting service level for the tentative number of active agents based on the state probability vector, which is based on the representation, a service rate values ?i,j and an arrival rate intensity value ? and comparing the resulting service level to the target service level.

Abstract: A vehicle seat mounting device includes a first component for attachment to a vehicle and a second component for attachment to a vehicle seat. The device further includes an arrangement for connecting the first and second components to each other such that the first component and the second component are adjustable relative to each other by pivoting the first component and the second component relative to each other around a substantially vertical geometrical pivot axis. At least one of the first and second components includes a first unit and a second unit which are displaceable relative to each other in a direction parallel to a substantially horizontal plane, and an arrangement for damping a relative displacement motion of the first and second units in the direction so as to reduce horizontal vibrations in the vehicle seat when the device is installed for use in the vehicle.

Abstract: The present invention relates to a safety system for use in protection functions, which system prevents that an error in one control circuit do not result in a function failure by using supervising functions comprising at least two sensors connected to a monitoring unit which receives and processes information about a position of a machine from both sensors and compares the results with stored values and a number of input conditions for the monitoring unit, whereby said sensors comprise means for generating data with respect to a position of a machine movement and said monitoring unit comprises means, which with respect to the result of the comparison is arranged to stop a machine movement if conditions for a stop are fulfilled. The monitoring unit is arranged to compare values from said sensors and when detecting deviating value from either one of sensors detecting a functional error with the sensors.

Abstract: The present invention relates to a safety system for use in protection functions, which system prevents that an error in one control circuit do not result in a function failure by using supervising functions comprising at least two sensors connected to a monitoring unit which receives and processes information about a position of a machine from both sensors and compares the results with stored values and a number of input conditions for the monitoring unit, whereby said sensors comprise means for generating data with respect to a position of a machine movement and said monitoring unit comprises means, which with respect to the result of the comparison is arranged to stop a machine movement if conditions for a stop are fulfilled. The monitoring unit is arranged to compare values from said sensors and when detecting deviating value from either one of sensors detecting a functional error with the sensors.

Abstract: The present invention relates to a programmable safety system intended to be used for safety functions, in which a fault in a control circuit does not lead to a safety function being disabled, which system comprises monitoring functions containing at least two control units, input terminals separately coupled to both control units, whereby each control unit executes its own instruction set and continuously compares a result from the execution with each other. At least one control unit can access the in and output terminal status of a second control unit and/or a number of flags, and the control units are arranged to monitor the result of respectively executed instruction sets and control that the results of the executions are substantially equivalent.

Abstract: The present invention relates to a programmable safety system intended to be used for safety functions, in which a fault in a control circuit does not lead to a safety function being disabled, which system comprises monitoring functions containing at least two control units, input terminals separately coupled to both control units, whereby each control unit executes its own instruction set and continuously compares a result from the execution with each other. At least one control unit can access the in and output terminal status of a second control unit and/or a number of flags, and the control units are arranged to monitor the result of respectively executed instruction sets and control that the results of the executions are substantially equivalent.

Abstract: The present invention relates to a kit to enable one to send a message with the help of a postcard or a similar postal item to visually impaired or blind persons who have the ability to read Braille characters produced with the help of a template which exhibits reversed dot-shaped holes corresponding to the characters in the Braille alphabet. Included in the kit are a sheet-shaped underlay consisting of cellular plastic or some other readily flexible material, a template of the aforementioned kind which exhibits reversed dot-shaped holes corresponding to the characters in the Braille alphabet, a number of sheet-shaped postcards consisting of a tough, plastic-containing material, and a hand-held pressure tool which is designed to execute the formation of the dots in the postcard, in conjunction with which the aforementioned pressure tool consist of a pointed impression part projecting from a holder.

Abstract: A method for manufacturing a circuit board on which electronic components and electrical circuits are to be mounted and connected together. The method comprises positioning mutually insulated and mutually intersecting electrical conductors in a layer of substrate material, preferably to form an x/y matrix, and treating the substrate material, with the conductors embedded therein, in a manner to establish interruptions in the various conductor paths at given locations therein, and to establish permanent electrical contact between the intersecting conductor paths at given locations of intersection. The substrate material used is sensitive to a given kind of radiation, and the material is irradiated, while screening those locations at which interruptions are to be established or at which the conductor paths are to be connected together.

Abstract: The invention relates to an arrangement for pulling the tail of a web-like material through a drying or cooling plant. In such a plant the web-like material is floated on air at a given distance from a surface provided with air delivery orifices. The web-like material (10) is thereby caused to pass zig-zag over drivable reversing rolls (2), while an endless traction or pulling member (3) in the form of a belt or rope runs in a separate path through the plant, substantially parallel to the material web, and is provided with means (12,13,14,15) with the aid of which the forward web end or tail (11) is attachable for pulling through the plant. At least one of the reversing rolls (2) is adapted at one end portion for carrying the tail pulling member either directly or over a pulley (9) drivably connected to said end portion. Driving the tail traction member is performed with the same means as drive the reversing rolls.

Abstract: The invention relates to a passive safety belt system for motor vehicles. The belt extends from a point of attachment at the floor of the vehicle via a redirecting fitting attached to the door, to a reel mechanism arranged in the door. In the vicinity of the fitting, a strap is attached to the belt. The outer end of the strap is provided with a block which runs in a track on the upper door window frame. When the door is opened, the block is displaced automatically forward in the track, whereby the strap pulls forward the upper end of the active diagonal portion of the belt, so that it is moved away from the seat.

Abstract: A vehicle deceleration sensing device making it possible to sense whether an occurring collision is powerful or just trivial. The device comprises a first mass body with an actuating member, a second mass body and a blocking member in the form of a cup spring preventing the second mass body from being displaced at an occurring deceleration of the vehicle until the first mass body has been displaced a predetermined distance indicating that the duration and the magnitude of said deceleration are in excess of predetermined values.