| Patent Number |
Title Of Patent |
Date Issued |
| RE29560 |
Peak load levelling system |
February 28, 1978 |
| A load levelling system for connection to an alternating current network includes an electro-chemical direct current source and line-commutated controllable convertor means having DC terminals connected to the supply source and AC terminals for connection to the network. A continuously |
| RE29435 |
Method of supervising the filling level in hoppers, shafts, silos and the like for miscellaneous |
October 11, 1977 |
| For supervising the filling level in an elongated space, such as hoppers, shafts, silos and the like, for miscellaneous granular material, the movement of the material is transformed into vibrations and the vibrations are converted into indicating signals which indicate the filling level |
| D306603 |
Welding seam tracker |
March 13, 1990 |
|
| D300935 |
Industrial robot |
May 2, 1989 |
|
| D292600 |
Track ball unit |
November 3, 1987 |
|
| 4986340 |
Method for stirring and/or braking of melts and a device for carrying out this method |
January 22, 1991 |
| Melt fed to a continuous casting mold is slowed and spread by a magnetic field acting in the path of the inflowing melt stream. The magnetic field, which is either a static field powered by continuous current, a field powered by permanent magnets, or a field powered by low-frequency |
| 4941087 |
System for bumpless changeover between active units and backup units by establishing rollback po |
July 10, 1990 |
| The central unit of a computer equipment has a processor and a memory as well as redundant units as backup units for the processor and/or the memory. Further, there are members for changeover from an active unit to a corresponding backup unit in the event of a fault in the active unit. T |
| 4896865 |
Force-absorbing means in a furnace |
January 30, 1990 |
| Expansive forces in a furnace of cylindrical shape (e.g. a ladle furnace) are absorbed by means of a metallic ring positioned in the bottom of the furnace which substantially fits the inner, lower side wall of the cylindrical steel shell of the furnace and absorbs the expansive forces |
| 4890028 |
Rotor for a turbo-generator |
December 26, 1989 |
| Generator rotor for a turbo-generator in which the rotor winding is fed via two feeding conductors, which are each arranged in a bored channel in the rotor body. The two channels diverge in relation to one another and each channel is bored in part in an axial shaft portion of the rotor b |
| 4888708 |
Control system for an industrial robot |
December 19, 1989 |
| A control system for a programmable industrial robot has a joystick for manual control of the robot during programming for teaching the robot to follow a working path defined by a number of set points. The control system further comprises a memory for storage of the coordinates of these |
| 4880972 |
Fiber-optic measuring apparatus using luminescent material |
November 14, 1989 |
| The present invention relates to a fiber-optic measuring apparatus for measuring physical quantities, such as position, speed, acceleration, force, pressure, elongation, temperature, etc., comprising at least one optic fiber for conducting light between an electronic unit and a trans |
| 4859887 |
Synchronous machine |
August 22, 1989 |
| A synchronous machine having a rotor with a plurality of salient poles which are supported by a rotor rim. The rotor rim is arranged by means of a hollow annular device in mechanical connection with a rotor hub, cooling gas flowing into the annular device relatively close to the hub and |
| 4857687 |
Induction apparatus for heating edge portion of billet |
August 15, 1989 |
| The invention relates to a device for heating billets, strip or sheet-metal, the device including one or more inductive edge heaters to heat the edges of a billet on its way from a continous casting machine, or strip or sheet-metal coming from a hot-rolling mill, arranged to surround |
| 4849917 |
Speed difference measurement in strip casting |
July 18, 1989 |
| In strip casting, a melt is pressed between a travelling belt and a casting drum rotating along with the belt. A method and device for measuring the speed difference between the speed of the belt and the peripheral speed of the drum involves providing the belt on one side with a pattern |
| 4831232 |
Industrial robot equipment capable of automatically terminating operation at a desired sensed lo |
May 16, 1989 |
| An industrial robot supports an operating member mounted on the robot hand for carrying out work or monitoring operation on an object. The robot has a sensor which controls the path of movement of the robot hand during the operation. The robot is provided with means which during the work |
| 4825709 |
Magnetoelastic force transducer |
May 2, 1989 |
| A magnetoelastic force transducer is made of two identical, cylindrical bodies of magnetic material which are held together by means of a stud bolt. In an axially extending and concentrically located inner space there is placed a bobbin with two measuring windings, connected in oppositio |
| 4825182 |
Electrical switching device |
April 25, 1989 |
| The switching device has a contact arm which is fixed on a shaft in the form of a thick-walled tube and is turnable between a closed position and an open position under the influence of a torsion rod spring. At one of its ends the spring is fixedly connected to the contact arm and at its |
| 4819184 |
Method and a device for optimum control of control parameters in an industrial robot |
April 4, 1989 |
| An industrial robot has a position controller for each one of the axes of the robot and a computer for control of the robot. The computer continuously determines, with the aid of a mathematical model set up in advance, in dependence on the robot configuration and load in question, th |
| 4815006 |
Method and device for calibrating a sensor on an industrial robot |
March 21, 1989 |
| An industrial robot has a sensor mounted on a hand of the robot which senses the position of an object relative to the sensor. The sensor controls, during automatic operation of the robot, its movement in relation to the object, a robot control system determining the path of the robo |
| 4806806 |
Coil for arrangement in slots in a stator or rotor of an electrical machine |
February 21, 1989 |
| A coil for arrangement in slots in a stator or rotor of an electrical machine, in particular a high voltage coil, comprising a bundle (17) of a plurality of conductors (18) located adjacent to each other and provided with a conductor insulation (19) for insulation of the conductors from |
| 4806069 |
Robot wrist |
February 21, 1989 |
| The bending and turning movements of the wrist are brought about by drive motors via at least one gear train, in which a cylindrical gear pinion drives a cylindrical gear wheel via an intermediate wheel. For adjusting the backlash, the intermediate wheel is journalled on a movable suppor |
| 4804304 |
Robot wrist |
February 14, 1989 |
| The wrist is built up of two wrist halves, between which the tilt with the turning disc is journalled. Each wrist half comprises an intermediate gearing with conical gear wheels and is built together with a drive motor. The two wrist halves are identical, and each half constitutes an |
| 4802368 |
Magnetoelastic force transducer |
February 7, 1989 |
| A magnetoelastic force transducer is made of two identical, cylindrical bodies of magnetic material which are held together by means of a stud bolt. In an axially extending and concentrically located inner space there is placed a bobbin with two measuring windings connected in opposition |
| 4800509 |
Detection of high resistance faults in electrical power supply network |
January 24, 1989 |
| High resistance ground faults on a transmission line of an electrical power transmission network are detected with the aid of a device comprising a travelling wave model of the line located in measuring stations (P, Q) at either end of the line, which permits the voltage distribution alo |
| 4797805 |
Fault location in a power supply network |
January 10, 1989 |
| A method for location of a fault on a transmission line in a network for distribution and transmission of electric power uses a travelling wave model of the transmission line positioned in measuring stations (P, Q) at either end of the transmission line, to obtain the voltage distributio |
| 4794223 |
Seam tracking device for an industrial robot |
December 27, 1988 |
| A weld seam tracker for a welding robot has an optical sensor (4) for sensing the position of the seam and controlling the movement of a welding torch (10). The sensor (4) includes a light source, for example a laser, and a position-sensing detector. The sensor (4) is rotatably mounted a |
| 4789296 |
Industrial robot |
December 6, 1988 |
| The invention relates to an industrial robot of a so-called agile type which has a lower arm (16) with double-sided journalling in a stand (12) consisting of two separated, upright parts (12a, 12b), the arm (16) being pivotable in the space between the stand parts. A pivot shaft (24) for |
| 4774509 |
Reset device for indicator |
September 27, 1988 |
| A device for mechanically resetting, by means of a simple manipulation, an optional number of status indicators of the type consisting of an electromagnet with an iron core, a magnetizing winding and some form of permanently magnetized indicating disk capable of rotating through 180. |
| 4771704 |
Damping device in a bogie for a railbound vehicle |
September 20, 1988 |
| A damping device in a bogie of a railbound freight car has good ride properties independent of the load carried by the car by making the damping device with friction wedges of triangular cross-section, an upper surface of which confronts an adjoining load-supporting bolster beam and |
| 4765166 |
Cavity forming press |
August 23, 1988 |
| A press for shaping a sheet metal blank in a cavity with a forming tool which determines the shape of the finished product. The sheet is pressed against the tool by a diaphragm which is influenced by a pressure medium on the side facing away from the cavity. The forming tool consists of |
| 4763532 |
Overload protection in transducers for measuring torque |
August 16, 1988 |
| A torque transducer which is constructed so as to be protected from an overload includes a measuring axle which extends through a housing and a take-up axle which also extends through the housing in parallel with the measuring axle. The portion of the measuring axle within the housing |
| 4744262 |
Arrangement for providing engagement without backlash between a gear pinion and a gear wheel coo |
May 17, 1988 |
| A cylindrical gear unit which includes a gear housing, a gear pinion and a gear wheel, the gear pinion being fixed to a shaft which is rotatably journalled in bearings supported by at least one bearing support. One of the bearing supports comprises a sleeve in which a roller bearing is |
| 4739665 |
Torque transducer with neutral point compensation |
April 26, 1988 |
| A torque transducer with neutral point compensation has a measuring axle formed as a hollow member inside which a slender torsion spring is axially arranged to internally load the hollow member. With this device a constant torque load on the measuring axle can be set with such a directio |
| 4723713 |
Industrial robot |
February 9, 1988 |
| When using an industrial robot together with a tool which is fed by a fluid, for example a nozzle for water jet cutting, the feed conduits often restrict the orientation capacity of the robot. This is avoided by providing a conduit which extends inside the robot arm and the wrist and |
| 4720393 |
Method of manufacturing a layer with electrical conductivity |
January 19, 1988 |
| For the manufacture of an electrically conducting layer in the form of a coating on a base or in the form of a free bearing film, a liquid product is prepared consisting of water, a water-soluble polymer dissolved therein, a pyrrole compound dissolved in the water or present therein in |
| 4719580 |
Detection and location of a fault point based on a travelling wave model of the high voltage tra |
January 12, 1988 |
| A method and a device for distance protection and location of a fault point on a transmission line based on voltage waves emitted from a measuring point towards a fault point and corresponding waves reflected from a fault point, which are included in a travelling wave model of a transmis |
| 4714974 |
Current limiter |
December 22, 1987 |
| A current limiter for high voltage utilizes the high migration velocity of an arc for rapidly inserting at least one pair of resistive runner rails upon a short-circuit in a circuit. To be able simultaneously to fulfil the demands for a high energy absorption capacity and sufficient resi |
| 4714835 |
Optical position-measuring sensor |
December 22, 1987 |
| An optical position-measuring sensor has a monolithic structure which includes at least two masses of photoluminescent material, which on excitation emit photoluminescent light with non-identical spectra. The at least two masses are supported in the sensor by a resilient part (e.g. a |
| 4708192 |
Casting line melt supply device |
November 24, 1987 |
| The invention relates to an apparatus for simultaneous casting of at least two casting moulds or balls. The apparatus comprises a carriage which is movable in the direction of a casting line and is provided with two gutters for transferring molten metal from respective furnace spouts to |
| 4703157 |
Robot wrist |
October 27, 1987 |
| A robot wrist is built up of three rotatable tubular wrist parts arranged one after the other, the axes of rotation of the first and the second part intersecting each other and the axis of rotation of the third part intersecting the longitudinal axis of the third part. Three mirrors are |
| 4696014 |
Self-baking electrodes |
September 22, 1987 |
| In the production of an electrode for an arc furnace from a hardenable electrode paste and in which the arc current is fed to the electrode via a current supply unit, an electrode heater is arranged, in the direction of feeding down of the electrode into the furnace upstream of the curre |
| 4695027 |
Industrial robot installation |
September 22, 1987 |
| A robot installation in a production line includes at least one robot (1) of pendulum type, the arm system (10, 14) of which is pivotable about at least one axis (12). The secondary arm (14) of the robot and a counterweight (16) are so displaceably arranged on the primary arm (10) of |
| 4694315 |
CMOS overvoltage protection circuit utilizing thyristor and majority carrier injecting anti-para |
September 15, 1987 |
| A semiconductor device comprises a semiconductor circuit of CMOS type and an overvoltage protective circuit integrated therewith. The CMOS circuit and the overvoltage protective circuit are formed in one and the same substrate. The device has a contact electrically connected to the s |
| 4692983 |
Method and installation for fitting nuts to a workpiece |
September 15, 1987 |
| The invention relates to a method and to an installation for fitting nuts to a sheet-metal workpiece, by punching the nuts thereinto. In order to provide a rational and flexible nut punching system which can be readily adapted to serve mutually different workpieces, it is proposed in |
| 4690012 |
Robot wrist |
September 1, 1987 |
| A wrist for an industrial robot with a large orientation capacity comprising first, second , third and fourth turnable wrist parts arranged in series with each other. The first wrist part is rotatable about a first axis. The second wrist part is journalled in the first wrist part and is |
| 4688142 |
Current transmission system for HVDC including a solid insulator having a surface coating of res |
August 18, 1987 |
| A system for HVDC transmission comprises a conductor, stressed by d.c. voltage, which is insulated from a surrounded grounded casing by pressurized SF.sub.6 gas and along part of its length by at least one solid insulator supporting the conductor in the casing and in contact with the |
| 4684109 |
Melt-transfer device for the protected tapping of molten metal from one vessel to another |
August 4, 1987 |
| A melt-transfer device for the protected tapping of molten metal from one vessel to another has a tiltable, cylindrical container with a lid, which is at least partially located in a first end wall in the container. The container is also provided with a melt-tapping pipe which is directe |
| 4683841 |
Control of a black liquor recovery boiler |
August 4, 1987 |
| A method for controlling the combustion and reduction processes in a black liquor (B.L.) boiler of a paper pulp plant by influencing the feeding of black liquor to the B.L. recovery boiler by means of a B.L. gun. Characteristic of the method is that the average thickness of the layer of |
| 4676295 |
Method and apparatus for the production of castings |
June 30, 1987 |
| A method and apparatus in the production of metallic castings in which metal in molten state is fed from a heated container to a mold or a smaller container via a pressure pipe, a pressure-generating means and a suction pipe. The temperature of the metal, which is present in the suct |
| 4676086 |
Press of pressure cell type |
June 30, 1987 |
| A press of pressure cell type comprises a press stand with two opposing force-absorbing elements between which a space is formed. In this space there is located a plate with a recess in which an elastic diaphragm is arranged. The diaphragm forms, together with the plate, a pressure cell. |
