Patents Represented by Law Firm Lilling & Greenspan
  • Patent number: 4926105
    Abstract: Method of induction motor vector control in Cartesian and polar coordinates, whereby control of the rotor speed, induction motor torque, as well as dynamic, power, and thermal processes, which is interconnected with control of the rotor flux linkage amplitude and phase as functions of the desired induction motor torque, is achieved in an electric drive by synchronizing the stator current control by a controlled synchronization frequency by means of three control inputs, one control input is used to control the synchronization frequency and phase as functions of the desired rotor torque and speed; two other control inputs are used to control the amplitudes of ortho-phasal and current phase to a phase angle equal to the ratio of the ortho-phasal and co-phasal and ortho-phasal currents as functions of the desired induction motor torque, the actual desired amplitude of the rotor flux linkage, and magnetizing characteristic of the induction motor, while the amplitudes of the ortho-phasal and co-phasal currents is
    Type: Grant
    Filed: February 17, 1987
    Date of Patent: May 15, 1990
    Inventors: Vladislav A. Mischenko, Natalya I. Mischenko
  • Patent number: 4923127
    Abstract: A ball tube mill in which an inclined wall dividing a housing of the mill into coarse and fine grinding chambers is fabricated from rigidly interconnected rods forming therebetween through slots for the passage of the material being ground. Part of each slot in the area of contact of the inclined wall with the grinding bodies at the side of the fine grinding chamber has a width smaller than the part of each slot at the remaining portion of the inclined wall at the side of the fine grinding chamber.
    Type: Grant
    Filed: April 20, 1988
    Date of Patent: May 8, 1990
    Inventors: Vasily S. Bogdanov, Viktor S. Platonov, Nikolai S. Bogdanov, Jury G. Bedko, Ivan I. Miroshnichenko, Nikolai D. Vorobiev
  • Patent number: 4920705
    Abstract: The method envisages measuring strip tension and computing the difference between tensions at the inlet to and outlet from each descaling zone, comparing this difference is strip tension with a preset difference, and compensating for deviations in strip tension from the preset difference by varying the pressure exerted by the powder on the strip in each descaling zone.
    Type: Grant
    Filed: November 2, 1988
    Date of Patent: May 1, 1990
    Inventors: Jury V. Lipukhin, Eduard A. Garber, Boris Y. Orlov, Viktor N. Ponosov, Vladimir M. Novikov, Gennady N. Rumako, deceased
  • Patent number: 4919527
    Abstract: A solar radiation concentrator includes a supporting frame (1), facets (2) arranged thereupon in annular rows, the reflecting surface of the facets being divided into annular zones (3). At least one of the peripheral annular zones (3) has a toroidal surface whose generatrix (4) is an arc. The center (5) of curvature of the generatrix (4) lies to the other side from the concentrator optical axis (6) relative to the generatrix. The geometric parameters of the annular zone (3) having a toroidal surface are chosen in such a way that of all the beams falling thereupon parallel to the optical axis (6) of the concentrator two beams (7, 8) are focused to the projected focus (F).
    Type: Grant
    Filed: November 19, 1987
    Date of Patent: April 24, 1990
    Inventors: Nurmamed Saiylov, Shaakhmed A. Nazarov
  • Patent number: 4918960
    Abstract: A method relates to the metallurgical industry. The claimed method includes stretching of the strip (1) flat in a horizontal position through the cleaning zone with abrasive ferromagnetic powder (6), in so doing, the strip is stretched first in one direction, then in the opposite, direction, enclosing the cleaning zone between the upper (2) and lower (3) branches formed on the strip (1).
    Type: Grant
    Filed: September 21, 1988
    Date of Patent: April 24, 1990
    Inventors: Jury V. Lipukhim, Leonid I. Danilov, Eduard A. Garber, Anatoly N. Subbotin
  • Patent number: 4918557
    Abstract: A cleaner for magnetic heads of tape recorders includes two gears centrally engaged with the revolving shaft of the recorder during use and pivotally installed in two revolving shaft holes on the tape cartridge respectively and peripherally engaged with each other. A plurality of projecting posts are spaced equally along the circumference in the planes of the two gears and alternately disposed in respect of each other post. A rocker is centrally and pivotally installed nearby the front end of tape recorder and between the two gears. Two opposite contact legs are provided to the rear end of the rocker and projected toward these posts respectively so as to contact these post alternately and respectively, and a cleaning element is installed on the front of the rocker.
    Type: Grant
    Filed: July 18, 1988
    Date of Patent: April 17, 1990
    Inventor: Benjamin Lee
  • Patent number: 4917312
    Abstract: A ball tube mill has a housing with an inlet and an outlet for material to be comminuted accommodates annular wall plates spaced at a predetermined distance from each other, arranged at an angle to the longitudinal axis of the housing, and having the form of an ellipse. The space between the adjacent annular wall plates is somewhat greater than D/tan .alpha., where D is the inside diameter of the housing, and .alpha. is the inclination angle of the annular wall plate to the longitudinal axis of the housing.
    Type: Grant
    Filed: July 18, 1988
    Date of Patent: April 17, 1990
    Inventors: Vasily S. Bogdanov, Ivan I. Miroshnichenko, Nikolai S. Bogdanov, Nikolai D. Vorobiev, Vladimir Z. Pirotsky, Ivan N. Shevchenko
  • Patent number: 4916742
    Abstract: The method of recording and reading audio information signals in digital form includes detecting, during time compression of digital signals, a chain of code values of the digital signal corresponding to a pause in the audio signal, measuring the duration of this chain of code values of the digital signal and shaping a pause identifier code and a pause duration code for subsequent recording with the digital signal. Furthermore, in the reading mode, time decompression of the digital signal includes detecting the pause identifier code and the pause duration code and using them to restore the duration of said chain of code values of the digital signal. To perform this method, the apparatus comprises a pause decoder (17), a pause identifier code shaper (18), a pause identifier code decoder (19), a condition (20) of pause duration count control signals and a pause duration counter (21).
    Type: Grant
    Filed: December 18, 1987
    Date of Patent: April 10, 1990
    Inventors: Viktor M. Kolesnikov, Mikhail U. Bank, Ilya M. Lazer, Gennady S. Brailovsky, Viktor I. Prygun
  • Patent number: 4916535
    Abstract: A method of non-destructive quality inspection of materials wherein a data transmitter and a material to be inspected are positioned very near to each other and set in motion in relation to each other. Information fed by the data transmitter is converted into a black-white or color image indicative of the quality of the material being inspected. Information fed by the data transmitter is kept in a memory and, as it is converted into a black-and-white or color image, it is periodically read out. The address of a memory location in the memory from which the readout cycle is to begin is assigned prior to the start of each readout cycle. A videomonitor realizing this method including a data transmitter mounted on a scanning device, a display unit connected to a control unit and an address unit including a recording counter series connected to a switch, as well as a readout counter connected to another input of the switch.
    Type: Grant
    Filed: August 6, 1987
    Date of Patent: April 10, 1990
    Inventors: Dmitry B. Volodchenko, Valery S. Kozlov, Vladimir A. Troitsky, Vladimir V. Kljuev, Alexandr V. Stepanenko, Orest S. Semenov, Jury K. Bondarenko, Jury B. Eskov, Semen S. Kulev, Nikolai V. Kotov
  • Patent number: 4915123
    Abstract: An apparatus for preparing gas mixtures from constituents taken in a given proportion which incorporates sources of gas mixture constituents connected to pressure-reducing valves and to a device for stabilizing absolute pressures of the gas mixture constituents an outlet of which communicates with a device for setting a proportion between the gas mixture constituents consisting of a distributor which is series-connected to at least two--depending on the number of the gas mixture constituents--sets of capillary tubes featuring all the same friction head. The device for setting the proportion between the gas mixture constituents is connected to a main mixer of the gas mixture components an outlet of which communicates with a controller of absolute pressure of the gas mixture.
    Type: Grant
    Filed: May 2, 1988
    Date of Patent: April 10, 1990
    Inventors: Grigory A. Morgovsky, Evgeny P. Pistun, Zenovy N. Tepljukh, Yakov L. Sankin
  • Patent number: 4913874
    Abstract: A process of producing a tubular polymeric anticorrosion film which includes extrusion of a mixture of a thermoplastic polymer with a corrosion inhibitor in a liquid phase or with a solution thereof in a plastifying agent employed in an amount exceeding the limit of compatibility with the polymer, blowing this melt into a tubular film upon cooling, application of a layer of an enamel or a varnish incompatible with the thermoplastic polymer onto the external surface of the formed tubular film before the line of crystallization, which layer has a difference of the solubility parameters in respect of said corrosion inhibitor or a solution thereof in a plastifying agent of not more than 8.
    Type: Grant
    Filed: February 21, 1989
    Date of Patent: April 3, 1990
    Inventors: Leonid S. Pinchuk, Elena N. Aleshkevich, Viktor A. Goldade, Semen Y. Liberman, Grigory V. Rechits, Ekaterina I. Parkalova
  • Patent number: 4909682
    Abstract: The herein proposed invention relates to mechanical engineering. The essence of the invention resides in the fact that a contrivance for setting the table position includes two disks provided with drives for moving the table in a horizontal plane and disposed eccentrically one above the other as to be free to rotate about their pivot pins, the upper disk being rotatably mounted with respect to the pivot pin of the lower disk. The pivot pin of the lower disk mounts one device for reading the length of table movement in a horizontal plane along one of the coordinate axes, and a pin is fixed in position on the upper disk a distance from its axis equal to the amount of eccentricity between the pivot pins, the pin being movably associated with the table so as to carry another device for reading the length of table movement in a horizontal plane along the other of the coordinate axes.
    Type: Grant
    Filed: July 18, 1988
    Date of Patent: March 20, 1990
    Inventors: Juozas P. Rudzyanskas, Alexei A. Shkolyarenko-Milukas, Galina J. Rudzyanskaite
  • Patent number: 4910374
    Abstract: A welding complex in accordance with the invention comprises a machine for resistance butt welding, means for supporting the end part of the pipeline and holding means including a platform reciprocable axially of the pipeline and a plate with a device for carrying the pipe section to be welded, rotatable by a drive between the positions of loading a pipe section and aligning it with the pipeline. For loading the holding means with the plate rotated into the loading position, by longitudinally displacing a pipe section from the accumulator, the latter is arranged alongside the platform, so that the pipe section it delivers extends at an acute angle relative to the end of the pipeline.
    Type: Grant
    Filed: December 16, 1988
    Date of Patent: March 20, 1990
    Inventors: Vladimir K. Lebedev, Sergei I. Kuchuk-Yatsenko, Vasily A. Sakharnov, Boris A. Galyan, Valery G. Krivenko, Grigory B. Asoyants
  • Patent number: 4907752
    Abstract: A ball-tube mill includes a rotatable drum enclosed at the opposite sides by bottoms having a charging port and a discharge port, the drum accommodating an even number of perforated walls having the form of an ellipse, arranged at an angle to the centerline of the drum, and offset along the like axes of the ellipse one relative to another to define milling chambers occupied by grinding bodies. The bottoms are inclined to the longitudinal centerline of the drum at an inclination angle equal to the angle of inclination of the perforated walls, each bottom and one of the perforated walls being inclined in pairs to the opposite directions, the bottoms and the perforated walls being successively offset along the like axes of the ellipse one relative to the other at an angle .beta.=360.degree.:n, where n is the total number of bottoms and perforated walls.
    Type: Grant
    Filed: April 20, 1988
    Date of Patent: March 13, 1990
    Assignee: Materialov Imeni I.A. Grishmanova. Belgorodsky Tekhnologichesky Institut Stroielnykh
    Inventor: Vasily S. Bogdanov
  • Patent number: 4908814
    Abstract: A method for photothermal information recording, reading and erasing consists in that the surface of a recording medium (1) is charged prior to the photothermal recording process and then exposed, during photothermal information recording and erasing, to a modulated electromagnetic beam (8) localized to a spot size of the order of one information unit with the energy exceeding the energy required for softening the material of the recording medium (1), and, during information readout, with the energy less than that for softening the material of the recording medium (1), the surface of the recording medium (1) being discharged before erasing information.
    Type: Grant
    Filed: October 6, 1987
    Date of Patent: March 13, 1990
    Assignee: Institut Problem Modelirovanija v Energetiki AN Ukr. SSR
    Inventors: Vyacheslav V. Petrov, Dmitry A. Grinko, Alexandr A. Antonov, Andrei A. Krjuchin
  • Patent number: 4906048
    Abstract: The method of downhole hydraulicking of mineral resources consists in sinking main holes, fitting the main holes with casings down to a depth below a lower boundary of a pay-out bed, installing an apparatus for hydraulicking mineral resources in each main hole, breaking rock and forming cavities in a bedrock by a jet from a monitor provided in the apparatus for hydraulicking mineral resources. Auxiliary holes are sunk each above a face of each cavity, using a drilling tool, down to the cavity so that the mineral enters the cavity from the auxiliary hole as soon as the drilling tool is withdrawn therefrom. Pulp is lifted to the surface through the main holes until overburden rock is identified in the pulp.
    Type: Grant
    Filed: February 16, 1989
    Date of Patent: March 6, 1990
    Inventors: Nikolai I. Babichev, Viktor A. Dmitriev, Grigory J. Abramov, Vladimir F. Paveliev
  • Patent number: 4903823
    Abstract: A spatial conveyor includes a draw member (1) running on spherical supports (4) along a trackway. The draw member (1) consists of links each of which comprises interconnected plate cheeks (5, 6) having cavities. Some of the cavities accommodate elements connecting the adjacent plate cheeks (5, 6), whereas the others accommodate the spherical supports (4) running along the trackway made in the form of a plurality of support elements (11, 12, 13, 14) disposed equidistantly and uniformly relative to the longitudinal axis of the conveyor and making up in a section a closed regular polygon.
    Type: Grant
    Filed: May 27, 1988
    Date of Patent: February 27, 1990
    Inventors: Dmitry A. Plesser, Grigory A. Radutsky, Sergei K. Gutov
  • Patent number: 4902214
    Abstract: A new automatic multicolor rubber molding machine includes a feed unit having a plurality of tanks for rubber material of different colors. A heating and pressing unit have upper and lower electric heaters, and a mold unit consisting of one or more distributing boards is mounted on the bottom of the rubber tanks and has a plurality of gates, paths and ports.
    Type: Grant
    Filed: February 23, 1989
    Date of Patent: February 20, 1990
    Inventors: Chang Y. Min, Yi-Shen Chang
  • Patent number: 4902873
    Abstract: A method of elctric-arc welding includes the steps of feeding of a main metal-arc electrode (4) into a welding zone (1), the electrode being composed of at least one filler wire, and an additional metal-arc electrode (5) made up of at least one filler wire (6, 7, 8) and being under the same potential as the main metal-arc electrode (4). Control of the welding current, size and shape of the weld seam is carried out by virtue of a total cross-sectional area of the additional metal-arc electrode (5). Then the crater at the end of a weld seam (13) is filled up by consecutively disengaging the feed traverse of the filler wires of the main and additional metal-arc electrodes (4, 5).
    Type: Grant
    Filed: October 19, 1987
    Date of Patent: February 20, 1990
    Inventor: Alfred V. Ivannikov
  • Patent number: 4902070
    Abstract: An adult to infant convertible seat is described for automobiles and other moving vehicles which have a storage compartment behind the convertible seat. The infant seat is retractable into the storage compartment and extendible into the infant seat use position. The infant or child seat is provided with an upper back rest portion and lower seat portion which are selectively connected and locked to each other to permit unfolding of the seat when a child seat is to be used in a folded condition which substantially reduces the clearance radius of the seat thereby permitting the movement of the child seat in the folded condition into smaller storage compartments and areas of smaller dimensions.
    Type: Grant
    Filed: September 16, 1988
    Date of Patent: February 20, 1990
    Assignee: Child Riding Incorporated
    Inventors: Rudy J. Casale, Neil Messina