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| Number | Title | Issue Date |
| 4058265 | Cable magazine Cable magazine provided with two mainly parallel shafts on which sets of pulleys are arranged, and over which a cable is intended to be thread in several long and narrow coils, whereby one of the two sets of pulleys is stationary and the other one is mova... | 11/15/1977 |
| 4057312 | Connecting device at a bus bar A connecting device for connecting an electric wire to a bus bar, with a groove between two walls which form together a U-shaped section, characterized in that, a connecting piece has two inwardly sloping connecting surfaces to be pressed towards the edge... | 11/08/1977 |
| 4053947 | Method and apparatus for executing sequential data processing instructions in function units of a computer In a computer which includes function units interconnected by a bus system there is a first type of instruction which selects one function unit and orders the performance of an internal function and a second type of instruction which selects two function ... | 10/11/1977 |
| 4053723 | Method and apparatus for measuring the bit error frequency in a cable caused by crosstalk between line pairs during transmission of a 3-level coded PCM signal A method and an apparatus for measuring the bit error frequency in a cable caused by crosstalk from at least one disturbing pair to a disturbed pair at transmission of a 3-level coded PCM signal utilizes the fact that a PCM signal transferred on a pair an... | 10/11/1977 |
| 4051819 | Rotary block engine A rotary-block engine is provided with an eccentrically mounted cylinder block about the main drive shaft. The radial cylinders of the cylinder block each contain a reciprocating piston which is also eccentrically mounted about a secondary shaft, so that ... | 10/04/1977 |
| 4048579 | Feed-forward amplifier A feed-forward amplifier with an input arranged to receive wide-band signals and an output to supply a linearly amplified version of these has two parallel signal paths arranged between such input and output, one of the signal paths includes a cascade con... | 09/13/1977 |
| 4048581 | Oscillator frequency control loop In an oscillator circuit controlled by a reference frequency a voltage regulated oscillator is controlled by the output voltage from digital-to-analog converter whose digital input is obtained from an up/down counter. The counter is controlled by the outp... | 09/13/1977 |
| 4047132 | Multilayer printed circuit boards The present invention is concerned with multilayer printed circuit boards which have more than a single plane of interconnection conductors spaced away from a common plane, such as an earth or power plane. In such a case the conductors of the interconnect... | 09/06/1977 |
| 4047241 | Capacitive switch A capacitive switch includes: an electrical circuit formed by two spaced pads of conductive material on an insulative substrate; and a capacitive coupling member on the end of a keystem wherein the end of the keystem has a looped ribbon formed by two laye... | 09/06/1977 |
| 4046447 | Contact device A connector for a plurality of contact parts which are arrayed next to each other in a plane are supported by a planar shell of insulating material. A removable cap is provided with a plurality of receptacles for the free ends of the contact parts with a ... | 09/06/1977 |
| 4045743 | Detector circuits A waveform-level detector circuit is described for use in conjunction with waveforms showing positive and negative excursions about a neutral axis, the waveform trace crossing the axis between positive and negative peaks. Ideally, each axis crossing has s... | 08/30/1977 |
| 4042289 | Plug contact device intended for mounting on circuit cards In a plug contact to be mounted on a printed circuit board, separate flat contact springs are mounted in a plurality of parallel grooves on an insulating body. To hold the contact springs each groove is provided with projections and the contact spring is ... | 08/16/1977 |
| 4041867 | Conductor containing explosive gas mixture for initiation of ignition element and explosive charge A tubular fuse, which is supplied with an explosive gas, is formed so that as the explosive gas is detonated a turbulence will be created to aid in the propogation and continuance of the detonation. To achieve this turbulence, the inner circumferential su... | 08/16/1977 |
| 4040269 | Apparatus for continuously cooling wire shaped objects An apparatus for cooling plastic sheathed wires after the sheathing operation comprises two concentric tubes where the compartment between the tubes acts as a manifold for numerous nozzles directing jets of compressed air into the inner tube. A water stre... | 08/09/1977 |
| 4041458 | Arrangement for carrying out random selection among a plurality of selectable devices in a telecommunication system Arrangement in a telecommunication system for random choice of one of a number of selectable devices, the condition of which is marked by the condition of a marking wire connected to the respective device. The selection is made by a selector chain consist... | 08/09/1977 |
| 4041417 | Low duty cycle pulse generator using two thyristors A pulse generator with a low duty factor includes a capacitor arranged to alternately be charged via a first current path and discharged via a second current path, the second current path has a thyristor element with its anode-cathode circuit connected ac... | 08/09/1977 |
| 4040122 | Method and apparatus for refreshing a dynamic memory by sequential transparent readings A data processing system which includes a central processing unit, a refresh control unit, and a dynamic memory unit whose memory cells require periodic refreshing and which are refreshed merely by being read. After the reading of a group of memory cells ... | 08/02/1977 |
| 4035768 | Personal identification apparatus Apparatus used in identifying a person by means of pressure patterns associated with a signature comprises first and second spaced and parallel planar conductor elements with a lamina of elastomeric material on an exposed surface of one of the elements to... | 07/12/1977 |
| 4032721 | Stored program logic system using a common exchange circuit A stored program logic system for use in a telephone central office of the space switching type connected to peripheral units includes: a data memory divided into areas, a computer assemblage with a program memory; and separate linking circuits connected ... | 06/28/1977 |
| 4032376 | Explosive composition with tellurite gelling agent An explosive composition, fluid when formulated and gelling to a paste at a predetermined time is provided. The composition, which is particularly useful for blasting rocks and can be readily poured or pumped into drillholes, comprises an oxidant, a combu... | 06/28/1977 |
| 4028900 | Pile with a foot A piling pole, comprising a piling pole for driving into the ground and having a shoe or foot provided with a displacement member, wherein the displacement member is formed by a plurality of parts, for example by two parts and both parts are disposed oppo... | 06/14/1977 |
| 4028031 | Screw extruder and calender assemblage A screw extruder-calender assemblage consists of a screw extruder and a pair of calender rolls disposed adjacent to the discharge end of the extruder and normal to the lengthwise axis thereof. An equalization chamber between the extruder discharge end and... | 06/07/1977 |
| 4024447 | Stepping motor driving apparatus A source of electric current has a first terminal connected to one end of each of a plurality of phase windings of a stepping motor whose other ends are connected via controllably operable switches to a second terminal of the current source, the switchesa... | 05/17/1977 |
| 4022313 | Ribbon lifting mechanism In a printer wherein a ribbon is driven against a platen by a print element there is provided a ribbon lifting mechanism having a one revolution motor which drives, via a n-to-1 reduction gear, a ribbon guide to pivot to different positions whereby differ... | 05/10/1977 |
| 4023112 | Broad band amplifier having negative feedback and a controllable amplification factor A broad band amplifier with negative feedback and controllable amplification factor for use in a carrier frequency system is described. The amplifier is preferably used as a control amplifier in the receiver of a basic group, for example, a basic 60-group... | 05/10/1977 |
| 4022982 | Apparatus for rearrangement of a switching network Apparatus establishes a connection between a certain network input or input channel and a certain network output or output channel by rearrangement of a three-stage switching network, where, in a specific network condition, each network input or input cha... | 05/10/1977 |
| 4021762 | Quartz crystal compensation circuit A compensation circuit is provided for a piezo-electric quartz crystal in a filter circuit for reducing the influence of the secondary resonance frequencies of the crystal on the filter characteristic. The Q-value of the crystal at one or several secondar... | 05/03/1977 |
| 4020649 | Brilliantized step cut diamond A step cut stone with a straight edged polygonal shaped girdle has a generally pyramidal base and a crown with at least girdle and table breaks wherein at least one of these breaks is cut with triangular shaped facets.... | 05/03/1977 |
| 4017783 | Power transistor drive apparatus in a DC-converter A current drive apparatus in a DC-converter including a pair of alternately conducting power transistors. The drive apparatus includes two drive transistors and a first and second drive transformer. The primary winding of the two transformers is connected... | 04/12/1977 |
| 4014243 | Expanding bolt An expanding bolt for attachment to the walls of a cavity, which bolt is threaded at its outer end for cooperation with a nut, and at its inner end is formed to a cone. The cone is surrounded by an expanding sleeve, one edge of which is continuous and ova... | 03/29/1977 |
| 4014604 | Sound slide There is disclosed sound slide assemblages which comprise a generally rectangular body incorporating an image bearing portion and a magnetic sound track portion. The image bearing portion is adapted to receive either a mounted or unmounted transparency. T... | 03/29/1977 |
| 4013971 | Integrated amplifier A monolitic transistor amplifier includes a negative feedback network between the output stage and an input stage. The network comprises one or more resistive voltage divider L-link with shunt elements which have a higher temperature coefficient than its ... | 03/22/1977 |
| 4012883 | Device for securing a beam to sheet piling There is disclosed a device for fixedly attaching a double-T or an I-beam to a sheet piling. Such fixed attachment of the beam is effected by welding an anchor bolt to the rib of the beam and/or bracing bars which in turn are welded to the flanges of the ... | 03/22/1977 |
| 4012698 | Device for obtaining a jitterstable synchronization of a counter A device for obtaining a jitterstable synchronization of a counter which has a clock input for receiving bit timing pulses from a remote control unit, an output for supplying regenerated frame timing pulses, and a reset input comprises: a phase comparator... | 03/15/1977 |
| 4012030 | Fixture for precision positioning of work pieces A fixture for holding of work pieces on a work table of a machine tool and for precision positioning of the work pieces in rotation and in translation. The fixture is held by springs pressing it against the work table and is thus floating on the work tabl... | 03/15/1977 |
| 4011680 | Line guide for a fishing rod A line guide for a fishing rod which consists of a guide ring material essentially consisting of titanium with ceramic as a binder and which is fitted within a ring made of hard metal and mounted to a support for attachment to a fishing rod.... | 03/15/1977 |
| 4012735 | Dual mode pattern generator In a cathode ray tube display system, characters are generated for display either as matrices of dots or as sets of strokes on the lines of a parallel horizontal line raster.... | 03/15/1977 |
| 4011494 | Inverter with symmetry correction circuits An inverter switching circuit, for example for a power supply, including semiconductors in push-pull configuration. To compensate for differences (basically in storage time) between the semiconductors in the two limbs the input pulse to each limb is of a ... | 03/08/1977 |
| 4010562 | Embroidery hoop holder A holder is provided for an embroidery hoop which has a grooved main portion in which is mounted the portion of the embroidery hoop that adjusts the tension of the outer hoop relative to the inner hoop. The main portion is supported by a pair of legs exte... | 03/08/1977 |
| 4008493 | Magnetic head structure with minimum feedthrough A magnetic head structure comprising a read transducer (head) and a write transducer (head) longitudinally disposed for operating on the same channel of a magnetic medium has a neutralizing transducer positioned lateral to either the read or write transdu... | 02/15/1977 |
