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Jonsson, Vasteras

Bo Jonsson, Vasteras SE

Patent application numberDescriptionPublished
20090074635TUBE AND USE OF SAID TUBE - A metallic tube for heating a medium or subject outside thereof or inside it by transfer of heat energy through walls of the tube, in which heat is absorbed or emitted at least to a substantial degree by radiation on one or both of the inner and outer surfaces of the tube, is of a material forming a layer of essentially Al03-19-2009

Ingvar Jonsson, Vasteras SE

Patent application numberDescriptionPublished
20090088899Industrial robot - An industrial robot including a tool flange at an end of an outer arm of the robot. A tool is secured to the tool flange. A sensor is configured to sense forces and/or torques applied to a tool secured to the tool flange. The sensor is built into the structure of the robot in the region of the tool flange.04-02-2009
20090145699BRAKING DEVICE FOR A ROBOT DRIVE AND METHOD OF DETECTING A BRAKING STATE - Method of detecting a braking state of a braking device of a robot drive, having a frame device which, if required, applies braking forces to a rotating component of the robot drive by means of a first movable frame element. As a result, the braking device is shifted into at least two operating states, in particular a closed state or an open state. In the process, during the transition of the braking device from one state into the other, at least one measuring signal is recorded and a braking state is determined by comparing the at least one measuring signal with reference values established beforehand. The invention also relates to a braking device on which the above method can be carried out06-11-2009
20100231158SERVER CONTROLLER AND A METHOD FOR CONTROLLING A PLURALITY OF MOTORS - Servo controller for controlling a plurality of motors including a master motor and a slave motor cooperatively driving a movable member. The servo controller is configured to control the master motor and the slave motor based on position references for the master motor. The servo controller includes a master speed controller configured to calculate a reference torque for the master motor based on speed errors for the master motor. The slave speed controller is configured to calculate reference torques for the slave motor based on speed errors for the slave motor. Each of the reference torques includes a proportional torque part and an integral torque part. The servo controller is configured to calculate each of the integral torque parts based on the speed errors of the master motor and the speed errors of the slave motor, such that the torques due to the integral torque parts will be distributed equally between the master and slave motors or according to a predefined ratio.09-16-2010

Lars Jonsson, Vasteras SE

Patent application numberDescriptionPublished
20080257703Diverter Switch, a Method for Operating Such a Switch and Use of Such a Switch - The invention relates to a diverter switch with an operating member and an electric circuit. The electric circuit has a main branch (10-23-2008
20090151486Device for Transmitting Rotary Motion - Device for transmitting rotary motion in a diverter switch comprising a motion-transmitting member for transforming an alternating rotary motion of a drive shaft into a unidirected rotary motion of a driven body driven about driven shaft. The motion-transmitting member includes an intermediate body rotatable about an intermediate shaft. A mechanical energy accumulation member is connected to the driven body. The motion-transmitting member for transforming the alternating rotary motion of the drive shaft into a unidirected rotary motion of the driven shaft includes an intermediate motion member connected to a crank mechanism. The motion member includes an engagement mechanism for transforming the linear motion into a unidirected rotary motion of the intermediate shaft via drive members.06-18-2009
20090277241Method and device for controlling a roll gap - The invention relates to a method and a device for controlling a roll gap when rolling a strip (11-12-2009

Tomas Jonsson, Vasteras SE

Patent application numberDescriptionPublished
20090147411THYRISTOR CONTROLLED SERIES CAPACITOR MODULE - A thyristor controlled series capacitor module including a capacitor connectable in series with a power line, a thyristor valve connected in parallel with the capacitor, a breaker connected in parallel with the thyristor valve, and an inductor. By providing a simplified breaker arrangement, the number of components is reduced.06-11-2009

Tomas U. Jonsson, Vasteras SE

Patent application numberDescriptionPublished
20110044082VOLTAGE SOURCE CONVERTER - A Voltage Source Converter having at least one phase leg connected to opposite poles of a direct voltage side of the converter and comprising a series connection of switching cells has an arrangement configured to apply a pressure to opposite ends of stacks of semiconductor assemblies for pressing the assemblies towards each other so as to obtain electric contact between semiconductor assemblies in said stack while ensuring that the semiconductor assemblies of a first path of each switching cell of the converter go into a permanently closed circuit state in case of a failure of the respective switching cell. A second path of each switching cell has means configured to keep said second path including an energy storing capacitor non-conducting upon occurrence of a said failure.02-24-2011