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| Number | Title | Issue Date |
| 4387485 | Method of extracting meat of small crustaceans The essence of the method of extracting or recovering meat of small crustaceans, e.g. antarctic krill, resides in that crustaceans are introduced into an air flow relative to the surface of the crustaceans at a given velocity required for creating a press... | 06/14/1983 |
| 4305455 | Multipass corrosion proof air heater In an air heater, an initial group of passes on the airside is arranged in the form of a package wherein the passes consisting of banks of tubes are connected in parallel with the uptake gases. The passes of the package are located predominantly at the same ho... | 12/15/1981 |
| 4304984 | Non-consumable electrode for plasma-arc welding A non-consumable electrode for plasma-arc welding in an atmosphere of carbon dioxide or carbon-dioxide-based mixtures, includes a holder of copper or copper alloys and an active insert of hafnium embedded in the holder, with a hafnium oxycarbide layer dis... | 12/08/1981 |
| 4300802 | Apparatus for drifting openings in hard rock An apparatus for drifting openings in hard rock incorporating a carrier capable for travelling along the floor of the opening. A means of breaking of the percussive type is mounted on the carrier by means of a turnable jib with provision for turning about... | 11/17/1981 |
| 4299293 | Percussive tool angular position device A percussive tool has a working tool mounted for reciprocations in a barrel. A collar is arranged between a shank and a working portion of the working tool. The shank of the working tool reciprocates in a guide bushing secured in the barrel to ensure reci... | 11/10/1981 |
| 4296528 | Drawing mechanism The drawing mechanism comprises a housing accommodating a feed couple defined by a pair of endless belts. One endless belt is mounted about a driving cylinder, and moves in engagement with a movable guide and transmits motion to the other belt running abo... | 10/27/1981 |
| 4297589 | Speed governor for a hydroelectric unit A speed governor for a hydroelectric unit includes an error sensing means, an integrator and a gate opening control means connected to the output of the integrator for controlling the degree of opening of the turbine gate apparatus. The governor further c... | 10/27/1981 |
| 4297665 | Doughnut-type transformer for resistance butt welding The doughnut-type transformer comprises a spirally wound core consisting of several individual annular cores each tightened by rod members. The annular core is surrounded by transformer sections comprising the primary and the secondary windings. Each wind... | 10/27/1981 |
| 4297739 | Device for exciting synchronous machine A device for exciting a synchronous machine, comprises an exciter electrically connected to an exciting winding of the synchronous machine, a starting unit connected in parallel with the exciter and comprising at least one branch having a resistor and a t... | 10/27/1981 |
| 4295353 | Mill stand for forming discontinuous longitudinal deformations in sheet metal The mill stand comprises forming rolls, which have congruent forming elements, mounted on a stand frame member in such a way that one of the forming rolls is adapted for a vertical reverse motion. This forming roll is connected with a hydraulic cylinder p... | 10/20/1981 |
| 4295386 | Apparatus for balancing bodies of revolution The apparatus for balancing bodies of revolution includes balancing tanks located peripherally within the body of revolution. Mounted coaxially with the body of revolution is a distributing chamber with conduits hydraulically connecting said distributing ... | 10/20/1981 |
| 4292830 | Mill for making transverse deformations on sheet metal A mill comprises at least one rolling stand with rolls having congruent lengthwise arranged forming elements, a drive stand and apparatus for locally heating a sheet metal at its portions to be transversely deformed or corrugated. The apparatus for locall... | 10/06/1981 |
| 4292820 | Method of and apparatus for knitting the heel of a hosiery article The method includes guiding two systems of warp threads to the knitting needles by two systems of thread guides, and moving the latter to knit the main loop courses and additional loop courses which are made between the main loop courses and which are sho... | 10/06/1981 |
| 4293238 | Ditchless drainlayer A ditchless drainlayer comprising a frame mounting a cutter-type working element for laying drainpipes. It is provided with a hydraulic cylinder for changing its angular position and a transmitter of its angular position with an amplifier-converter. Also,... | 10/06/1981 |
| 4292522 | Material density radiological measurement system with substantially linear output A material density radiological measurement system is provided. The system comprises a material density radiological detector, a squaring circuit connected to the output terminal of the detector, a constant multiplying circuit connected to the output term... | 09/29/1981 |
| 4291718 | Pressure valve The pressure valve is actuated by pressurized fluid and has a housing with a high-pressure space and a low-pressure space separated from each other by a partition. The partition has a bore accommodating a valve member. Axial passages are made in the body ... | 09/29/1981 |
| 4291742 | Method and apparatus for obtaining an ingot The invention relates to a method and apparatus for obtaining an ingot wherein elastic oscillations are directed on metal being crystallized over a broad frequency range and at high intensity in the form of powerful pulses generated by a high-voltage spar... | 09/29/1981 |
| 4292460 | Electrode-slipping apparatus for electric furnaces An electrode-slipping apparatus for electric furnaces comprises an electrode, a hydraulic hoist with electrode-slipping hydraulic mechanisms mounted thereon, a locking ring, contact shoes with a clamp and hydraulic clamping mechanisms, a locking ring cont... | 09/29/1981 |
| 4292494 | Electric spark building-up of metal on the working surface of rolls An electric spark building-up of metal on the working surfaces of rolls is effected by applying a voltage from an unipolar current source to each roll being treated and to an electrode interacting with the surface of the rolls. Building up of metal is eff... | 09/29/1981 |
| 4292486 | Apparatus for delivery of melting rings and valves to an inductor heater An apparatus for delivery of melting rings and valves to an inductor heater, for hard facing of valves for internal combustion engines by melting rings of heat-resistant alloy upon the working surfaces of valves, comprises gravity feed trays, one for feed... | 09/29/1981 |
| 4289985 | Electrical machine with cryogenic cooling An electrical machine with cryogenic cooling has a hollow rotor filled with a coolant and comprising a superconducting winding provided with at least two supply leads being cooled. One of the supply leads is connected to a plus sign current-collecting mea... | 09/15/1981 |
| 4290051 | Device for reducing irrational-base codes to minimal form A device for reducing irrational-base codes to a minimal form, comprising "n" identical functional cells whereof each Bth cell incorporates a flip-flop with a count input and an AND convolution element intended to evaluate the possibility of performing th... | 09/15/1981 |
| 4289121 | Method for controlling functional state of central nervous system and device for effecting same The method consists of subjecting the central nervous system to the effects of rhythmic audio and light signals which are applied simultaneously in accordance with biorhythms corresponding to a stable state of the central nervous system. After setting the... | 09/15/1981 |
| 4289280 | Crusher bowl clamping device The crusher bowl clamping device comprises a stationary carrier ring screw-threaded to the bowl, a cylindrical bush mounted on the top end of the carrier ring, and a flange arranged above the bush carrying hydraulic jacks to provide a clamping thrust in t... | 09/15/1981 |
| 4289299 | Hydraulic lifting jack including a safety device for an elevator therein A hydraulic lifting jack on wheels, comprising a pair of frame plates, an elevator pivotally mounted on the frame plates, a lifting saddle arranged in the free end of the elevator, and a hydraulic power unit for lifting the elevator, in which a safety dev... | 09/15/1981 |
| 4288347 | Novel catalyst for dealkylating alkyl benzenes and fractions of aromatized benzines by conversion with steam A catalyst for dealkylating alkyl benzenes and fractions of aromatized benzines by means of steam conversion is disclosed. The catalyst comprises rhodium or rhodium in a mixture with another noble metal from Group VIII of the Periodic System in an amount ... | 09/08/1981 |
| 4288767 | Automatic magnetic switch An automatic magnetic switch comprising an over-load or short-circuit protection means and a manual magnetic switch installed in the switch casing. A magnetic control means is contained in a sub-casing of the switch. The manual magnetic switch has a condu... | 09/08/1981 |
| 4287779 | Directional-action mechanical vibrator and a mechanical system for converting rotary motion into reciprocating motion The directional-action mechanical vibrator comprises a housing which accommodates a shaft carrying a number of inertia masses arranged eccentrically thereon, said shaft being linked to a power drive, and a rod is adapted to impart motion to the mass being... | 09/08/1981 |
| 4287936 | Ingot casting apparatus An ingot casting apparatus having an open top ingot moulds hinged to an endless hauling chain of a conveyer. The conveyer is inclined so that the upper descending branch of the endless chain with the ingot moulds placed thereon is inclined to the horizont... | 09/08/1981 |
| 4287474 | Method and apparatus for non-destructive quality testing of spot welds A method of non-destructive quality testing of spot welds resides in that in the test weld nugget region there is produced a primary electromagnetic field inducing eddy currents in that region. Thereupon, the primary electromagnetic field is displaced in ... | 09/01/1981 |
| 4286450 | Apparatus for manufacturing corrugated tubes An apparatus for manufacturing corrugated tubes comprises a unit with a hydraulic drive for clamping and sealing the tubular billet, and a device for axial compression of said tubular billet communicating with a compressed gas source. The apparatus also c... | 09/01/1981 |
| 4287344 | N,N-bis-(decahydroquinolyl-N-methyl)imidazolin-2-thiones The present invention relates to novel derivatives of imidazolin-2-thione and a method of preparing same. These novel compounds comprise N,N'-bis-substituted imidazolin-2-thiones of the formula: ##STR1## wherein R1 is ##STR2## R | 09/01/1981 |
| 4285704 | Apparatus for purifying air An apparatus for separating solid impurities from a fluid, such as air, comprising a housing, a set of filter elements fixed on a set of perforated sleeves, a fan with a driving electric motor, a louvered cyclone positioned around the filter elements, a c... | 08/25/1981 |
| 4285780 | Method of making a multi-level circuit board A multi-level printed circuit board with at least two levels of circuitry. A substrate has a first level of circuitry, an insulating covering or layer over the entire surface of the substrate and the circuitry except in first predetermined areas, a second... | 08/25/1981 |
| 4286025 | Detector for thermoluminescence dosimetry A detector for thermoluminescence dosimetry (TELDE™) based on an ionic compound is shaped as a pellet. The pellet is composed of a plurality of single-crystal particles bonded together by molecular forces. A method for manufacturing such a detector is c... | 08/25/1981 |
| 4286060 | Process for production of an amino acid The process according to the invention comprises submerged cultivation of microorganisms producing an amino acid in a nutrient media including nitrogen, mineral salts and a source of carbon - a mixture of hexose and pentose monosaccharides obtained by per... | 08/25/1981 |
| 4286065 | Apparatus for cultivation of microorganisms on granular nutrient medium The disclosed apparatus relates to the microbiological industry and can be used in the food and medical industries, as well as in agriculture for utilization of the waste and refuse of animal-breeding farms. The apparatus comprises a sealed vertically arr... | 08/25/1981 |
| 4286166 | Device for electron irradiation of rolled materials A device for electron irradiation of rolled materials comprises an electron source arranged in a radiation protection chamber, and a drum for transportation of rolled material in a slotted irradiation zone, defined by the radiation protection chamber wall... | 08/25/1981 |
| 4285190 | Rotobaler A distinguishing feature of the present invention is that the bailing chamber of the rotobaler is installed between the end walls of the frame in a direction parallel to the direction of movement of the machine. The baling chamber is made in the form of a... | 08/25/1981 |
| 4283991 | Percussion mechanism Fluid-actuated percussion mechanism includes a housing with an internal cylindrical space receiving a reciprocating piston dividing the space into a working stroke chamber and an idle stroke chamber. The mechanism further includes fluid distributing means... | 08/18/1981 |
