Patents Represented by Attorney, Agent or Law Firm Louis E. Marn
  • Method for slit radiography
    Patent number: 4916723
    Abstract: In a method for slit radiography a fan-shaped X-ray beam scans a body to form an X-ray shadow image. The fan-shaped beam is formed by a number of sectors situated next to each other. For each sector the transmitted X-ray radiation is controlled instantaneously during a scan by means of controllable beam sector modulators. The X-ray radiation is cyclically modulated in a predetermined manner for all the sectors taken together. The controllable beam sector modulators are individually controlled to select cyclically and in synchronism with the predetermined cyclic modulation a part of the X-ray radiation for each sector.
    Type: Grant
    Filed: June 17, 1987
    Date of Patent: April 10, 1990
    Assignee: B.V. Optische Industrie "De Oude Delft"
    Inventor: Ronald J. Geluk
  • Deferred actuated battery
    Patent number: 4910104
    Abstract: There is disclosed a deferred actuated battery assembly comprised of a plurality of bipolar electrodes disposed between an inert cathode current collector acting as a hydrogen electrode and an anode plate formed of a material selected from the group consisting of aluminum, magnesium, aluminum alloys, magnesium alloys and mixtures thereof and configured for electrolyte flow therebetween.
    Type: Grant
    Filed: March 29, 1989
    Date of Patent: March 20, 1990
    Assignee: Alupower, Inc.
    Inventors: Bhaskara M. L. Rao, Robert P. Hamlen
  • Process and apparatus for operating a deferred actuated battery
    Patent number: 4910102
    Abstract: There is disclosed an improved battery assembly and process for operating same wherein a battery assembly comprised of bipolar electrodes disposed between an inert cathode current collector acting as a hydrogen electrode and an anode plate formed of a material selected from the group consisting of aluminum, magnesium, aluminum alloys, magnesium alloys and mixtures thereof is configured for electrolyte flow wherein the electrolyte includes hydrogen peroxide in an amount to provide 0.5 to about 30 volume percent solution.
    Type: Grant
    Filed: March 30, 1989
    Date of Patent: March 20, 1990
    Assignee: Alupower, Inc.
    Inventors: Bhaskara M. L. Rao, Wojciech Halliop
  • Radio-active method for determining trace amounts of peroxide
    Patent number: 4908321
    Abstract: There is disclosed a method of contacting a peroxide containing substance with non-volatile, alpha-keto acid radiolabeled with --C.sup.14 in the carboxyl group and determining radioactivity evolved .sup.14 CO.sub.2 and thereby calculating the amount of peroxide in the substance.
    Type: Grant
    Filed: February 3, 1989
    Date of Patent: March 13, 1990
    Inventor: Shambhu D. Varma
  • Electrochemical cathode and materials therefor
    Patent number: 4906535
    Abstract: There is disclosed a process for producing an electrochemical cathode for an electrochemical cell comprised of a current collecting layer or substrate laminated between layers of a nonwoven conductive fibrous web, preferably of conductive carbon fibers, impregnated with a mixture of carbon particles and a nonfibrous polymeric substance, and optionally with a hydrophobic microporous film or layer disposed on one of the layers of the nonwoven conductive fibrous web as well as the product produced thereby.
    Type: Grant
    Filed: December 20, 1988
    Date of Patent: March 6, 1990
    Assignee: Alupower, Inc.
    Inventor: William H. Hoge
  • Radiographic image detection device
    Patent number: 4906850
    Abstract: There is disclosed a radiographic image detection device comprised of a semiconductive matrix having rows and columns of radiation sensitive areas, a protective layer formed on the semiconductive matrix and having lands or land portions defined by grooves corresponding to areas between the rows and columns of the sensitive areas and crystals capable of adsorbing X-ray radiation disposed on the lands or land portions of the protective layer.
    Type: Grant
    Filed: May 20, 1988
    Date of Patent: March 6, 1990
    Assignee: BV Optische Industrie "De Oude Delft"
    Inventor: Meindert J. M. Beerlage
  • Temperature control indicating apparatus of a hot runner in a thermoplastic synthetic resin injection molding system
    Patent number: 4899288
    Abstract: In a temperature control indicating apparatus of a hot runner in a thermoplastic synthetic resin injection molding system, the apparatus has a hot runner comprising a body heater, a tip heater and a temperature sensor. The hot runner is connected to a hot runner temperature control circuit having A/D converter. The apparatus has the function of arithmetic control, setting operation and display. Further, the apparatus comprises a digital control means including a microprocessor, thereby the body heater of the hot runner is digital-controlled in the process of thermoplastic synthetic resin injection molding operation.
    Type: Grant
    Filed: May 12, 1988
    Date of Patent: February 6, 1990
    Inventor: Shigeru Tsutsumi
  • Dosimeter for ionizing radiation
    Patent number: 4896041
    Abstract: A dosimeter for ionizing radiation is of oblong shape. It comprises a gas-filled measuring chamber surrounded by a casing. THe casing is formed of two oblong frames of insulating material that are substantially similar in shape. The two frames are mounted on each other in a gas-tight manner. The anode wires are situated in the plane of separation between the frames and are secured by the frames in contact with each other. At least one of the frames is provided with a cathode over its whole length and parallel to the plane in which the anode wires are situated. Along the edge of the cathode extends a guard electrode which surrounds the cathode with a certain gap. The dosimeter is made of materials that are transparant to the ionizing radiation. It can be used particularly in slit radiography equipment in which the slitwidth can be controlled locally and independently along the length of the slit.
    Type: Grant
    Filed: November 14, 1986
    Date of Patent: January 23, 1990
    Assignee: B.V. Optische Industrie `De Oude Delft`
    Inventors: Hugo Vlasbloem, Simon Duinker
  • Bipolar electrode and process for manufacturing same
    Patent number: 4892797
    Abstract: There is described an improved bipolar electrode comprised of an intermediate double-sided adhesive conductive plastic film or layer disposed between electronegative and electropositive layers wherein the intermediate layer has a volume resistivity of at least 0.5 ohm-cm. as well as a process for manufacturing same by passing a laminate of such layers through a pressure roller assembly at pressures between 30 to 500 psig.
    Type: Grant
    Filed: March 10, 1989
    Date of Patent: January 9, 1990
    Assignee: Alupower, Inc.
    Inventors: Bhaskara M. L. Rao, William Kobasz, James C. Menke
  • Image pickup device with exposure control based on pixel samples
    Patent number: 4893186
    Abstract: Image pickup device comprising a matrix having horizontal rows and vertical columns of image pickup elements and having means supplying clock signals to the matrix of pickup elements in order to shift image information in the column direction in the time delay and integration mode. Along each column in image pickup elements at predetermined positions a determination is made of whether the charge at those positions exceeds a limit value. If so, the charge in such image pickup elements is removed completely and integration starts again. From the charge in the last element in a column as well as the number of times charge has been removed it can be deduced what the total charge would have been without removal.Thus images can be recorded the contrast ratio of which otherwise would exceed the maximum contrast ratio which the image pickup device is capable of recording.
    Type: Grant
    Filed: February 8, 1988
    Date of Patent: January 9, 1990
    Assignee: B.V. Opische Industrie "De Oude Delft"
    Inventor: Hendrik Mulder
  • Process and apparatus for the flame preparation of ceramic powders
    Patent number: 4891339
    Abstract: There is disclosed a novel process and apparatus for continuously producing very fine, ultrapure ceramic powders from ceramic precursor reactants in a self-sustaining reaction system in the form of a stabilized flame thereof to form ceramic particles and wherein the thus formed ceramic particles are collected in the absence of oxygen.
    Type: Grant
    Filed: October 23, 1987
    Date of Patent: January 2, 1990
    Assignee: AeroChem Research Laboratories, Inc.
    Inventors: Hartwell F. Calcote, William Felder
  • Piezoelectric attenuation tongue system for slit radiography equipment
    Patent number: 4890312
    Abstract: A piezo-electric attenuation tongue system for slit radiography equipment comprises a number of tongues placed next to each other. The tongue system is manufactured by slitting a plate of piezoelectric material from one of the edges but leaving unslit a strip of the plate along the opposite edge.
    Type: Grant
    Filed: November 14, 1986
    Date of Patent: December 26, 1989
    Assignee: B. V. Optische Industrie "De Oude Delft"
    Inventor: Simon Duinker
  • Apparatus for failsafe metering of a fluid
    Patent number: 4886090
    Abstract: There is disclosed an assembly including a plurality of storage tanks for respective liquid chemicals to be metered, a plurality of feed chambers of a predetermined volume associated with respective storage tanks and disposed below such respective storage tanks, a conduit for process fluid for receiving predetermined volumes of such liquid chemicals as predetermined time cycles wherein the liquid chemicals are introduced in parallel feed to the process fluid in response to respective cycle timers.
    Type: Grant
    Filed: November 29, 1988
    Date of Patent: December 12, 1989
    Assignee: Ashland Oil, Inc.
    Inventor: George F. Hays
  • Reusable plastic drum container assembly and process for refitting such plastic drum container assembly
    Patent number: 4880580
    Abstract: A novel reusable plastic drum container assembly and a process for installing a fitting-receiving member in an opening provided in a drum head wherein the opening is formed by a cylindrically-shaped neck member having an outer sloping surface including a circularly-shaped indentation portion extending perpendicularly from top surface of the drum head and wherein the fitting-receiving member in cross-section is of an inverted U-shape having an inner cylindrically-shaped portion, a circularly-shaped base portion, and an outer cylindrically-shaped leg portion defining a channel and is disposed over the neck member of the drum head with an electromagnetic bonding material fused between the outer surfaces of the neck member and the interior surfaces of the fitting-receiving member.
    Type: Grant
    Filed: December 3, 1987
    Date of Patent: November 14, 1989
    Assignee: Ashland Oil, Inc.
    Inventors: Robert B. Bowers, Mark Chookazian
  • Electric fan assembly for over-the-road trucks
    Patent number: 4875521
    Abstract: There is disclosed an over-the-road truck having an internal combustion engine of at least 200 hp including a radiator and an electric fan assembly therefor consisting of an electric motor to which is attached an axial flow propeller fan and operating only when necessary and of a minimum wattage determined by W=1.75E wherein E is the engine horsepower provided that the core size (in.sup.2) of the radiator is 3E and the air flow (CFM) therethrough is at least 22.5E.
    Type: Grant
    Filed: February 27, 1987
    Date of Patent: October 24, 1989
    Inventor: Roger Clemente
  • Calendar assembly
    Patent number: 4872277
    Abstract: There is disclosed a calendar assembly having a first chamber containing a display mechanism for at least fourteen separate calendar year systems, the first chamber mechanically coupled to a second chamber comprising an index mechanism which includes indices for establishing the relative position between the index mechanism and the calendar year system in order to locate a calendar year system for any pre-selected calendar year.
    Type: Grant
    Filed: August 18, 1987
    Date of Patent: October 10, 1989
    Inventor: Rao V. Angara
  • Elongated X-ray detector tube
    Patent number: 4861977
    Abstract: The housing of an elongated proximity-focus image intensifier comprises at least two elongated parts. The parts have in cross-section such dimensions and such a configuration that the housing is self-supporting. An exemplary embodiment of such a housing which is essentially rectangular in cross-section has a front wall, a rear wall and two side walls, all having an essentially rectangular cross-section. In the case of at least two pairs of adjacent walls the edge in the longitudinal direction of the surface, facing the interior of the housing, of a first of the pair of walls is provided with profiling in the form of a recessed section in which the longitudinal edge of the adjacent tube wall is received.
    Type: Grant
    Filed: February 8, 1988
    Date of Patent: August 29, 1989
    Assignee: B.V. Optische Industrie `De Oude Delft`
    Inventor: Marcel R. de la Fonteijne
  • Eye examination scope with access orifice in eye cup
    Patent number: D303145
    Type: Grant
    Filed: September 12, 1988
    Date of Patent: August 29, 1989
    Assignee: Vision Care Research Labs., Inc.
    Inventor: Dieter R. Berndt
  • Ball-point pen
    Patent number: D303549
    Type: Grant
    Filed: January 28, 1986
    Date of Patent: September 19, 1989
    Assignee: Kreuzer Produktion+Vertrieb GmbH & Co. KG
    Inventor: Gunter Horntrich
  • Tag holder for receiving information pieces
    Patent number: D305911
    Type: Grant
    Filed: May 15, 1986
    Date of Patent: February 6, 1990
    Assignee: Almetek Industries, Incorporated
    Inventor: Albert A. Burlando