Patents Represented by Attorney Charles E. Pfund
  • Patent number: 5317328
    Abstract: A conical horn microwave antenna has a reflector positioned at the large end of a conical feed horn which has the side walls of the horn wider than the projected effective area of the reflector such that microwave absorber material lining the feed horn does not obstruct wave propagation between the feed horn and the effective reflector area.
    Type: Grant
    Filed: April 2, 1984
    Date of Patent: May 31, 1994
    Assignee: Gabriel Electronics Incorporated
    Inventor: Daniel C. Allen
  • Patent number: 5237190
    Abstract: A charge-coupled-device image sensor includes first, second and third linear array imagers, first, second and third horizontal charge-coupled-devices, first, second and third transfer gates and first and second vertically arranged charge-coupled-devices. The first transfer gate is operated so as to transfer electrons from the first linear array imager to the first horizontal charge-coupled-device. The third transfer gate, the first and second vertically arranged charge-coupled-devices and the second horizontal charge-coupled-device are operated so as to transfer electrons from the third linear array imager to the third horizontal charge-coupled-device. The second and third transfer gates and the first vertically arranged charge-coupled-device are operated after electrons from the third linear array imager have been transferred to the third horizontal charge-coupled-device so as to transfer electrons from the second linear array imager to the second horizontal charge-coupled-device.
    Type: Grant
    Filed: July 31, 1992
    Date of Patent: August 17, 1993
    Assignee: Hualon Microelectronics Corporation
    Inventors: Liang-Chung Wu, Clarence Choi
  • Patent number: 5219372
    Abstract: A door accessory, such as a door hinge or a door check, includes a hydraulic retarding device for cushioning the closing action of a door. The hydraulic retarding device has a cylinder body which confines a fluid receiving space to receive hydraulic fluid therein. One end of a piston rod extends into the fluid receiving space and has a valve unit provided thereon. The valve unit includes a piston which is formed with perforations and which forms a clearance with the cylinder body and a valve ring which is loosely sleeved on the piston rod.
    Type: Grant
    Filed: June 18, 1992
    Date of Patent: June 15, 1993
    Inventor: Simpson Lee
  • Patent number: 5195210
    Abstract: A door hinge includes a hydraulic retarding device for cushioning the closing action of a door. The hydraulic retarding device has a cylinder body which confines a fluid operating space to receive hydraulic fluid therein. The fluid operating space includes a pair of longitudinally extending cylindrical spaces and an intermediate longitudinal passage provided between and communicating the cylindrical spaces. A vane unit is provided in each of the cylindrical spaces and has a blade which defines a longitudinal clearance with an inner surface of the cylinder body. A baffle extends longitudinally into each of the cylindrical spaces and is disposed between the passage and a respective one of the vane units. The baffles are substantially arc-shaped in cross-section and face away from each other. A gate valve is provided in the passage between the baffles.
    Type: Grant
    Filed: June 19, 1992
    Date of Patent: March 23, 1993
    Inventor: Simpson Lee
  • Patent number: 5024154
    Abstract: In apparatus for supplying ink and or water to a plate cylinder through fountain roller, swinging roller and a transfer roller, the transfer roller is supported by a swinging lever and the motion thereof is allowed or prevented by a spring biased control member. Such allowance and prevention is selected by an operating handle.
    Type: Grant
    Filed: February 17, 1981
    Date of Patent: June 18, 1991
    Assignee: Komori Printing Machinery Co., Ltd.
    Inventor: Kiyoshi Ito
  • Patent number: 4976781
    Abstract: Noble metal or diamond values are recovered from ore slurries by contact with pellets of oil, coal and bitumen as a secondary binder. The pellets are of a size above 0.75 mm and contain 2% bitumen and 18% lighter oil fractions. The pellets do not disintegrate and size range remains constant.
    Type: Grant
    Filed: August 21, 1987
    Date of Patent: December 11, 1990
    Assignee: Charlton Mineral Associates Pty. Ltd.
    Inventors: David Mainwaring, Mark Cadzow
  • Patent number: 4974137
    Abstract: A luminaire for high intensity indirect lighting providing a horizontally symmetrical light distribution with peak candle power at low angles is disclosed. The luminaire includes an inner light directing member nested in spaced relation within a generally dome-shaped outer translucent member. The inner light directing member includes means for directing the majority of light emitted by an axially located vertical light source out of the upwardly facing open end of the light directing member after no more than one reflection, and means for illuminating the outer translucent member to a substantially homogenious brightness level comparable to that of the surrounding ceiling.
    Type: Grant
    Filed: April 11, 1990
    Date of Patent: November 27, 1990
    Assignee: Lam Lighting Systems
    Inventors: Royal H. Evans, Jr., Robert Rutledge
  • Patent number: 4892131
    Abstract: A stationary board adapted to support a metal die and a frame adapted to support an injection cylinder are formed as an integral hollow structure. A sleeve teemed with molten metal extends through the board coaxially with the injection cylinder, and the molten metal in the cylinder is injected into the die by a plunger operated by the injection cylinder. With this construction, the weight of the apparatus is decreased and the rigidity can be increased. Further, not only centering of the injection cylinder is facilitated but also the length of the sleeve can be decreased.
    Type: Grant
    Filed: April 27, 1989
    Date of Patent: January 9, 1990
    Assignee: Ube Industries, Ltd.
    Inventor: Toyoaki Ueno
  • Patent number: 4862580
    Abstract: This invention discloses a multi-purpose modular plug crimp tool which is provided with at least one set of modular plug receiving groove, conduction piece pressing block, bus pressing block etc., and is thus applicable to perform crimp operations for several types of modular plugs.
    Type: Grant
    Filed: July 12, 1988
    Date of Patent: September 5, 1989
    Assignee: Dual Enterprises Corporation
    Inventors: Yough J. Wang, Wen L. Shyu
  • Patent number: 4858865
    Abstract: A wedge operated levelling shoe is disclosed for supporting machine tools or the like. A top and bottom plate are separated by an adjustable distance determined by the position of an intermediate wedge. The parts are maintained aligned by slidable keys and resilient spring elements which provide a compact unit with higher natural resonant frequency than the individual parts.
    Type: Grant
    Filed: October 20, 1987
    Date of Patent: August 22, 1989
    Assignee: Air-Loc Schrepfer AG
    Inventor: Rudolf Schrepfer
  • Patent number: 4855200
    Abstract: A high contrast and brightness fluorescent screen of a color picture tube has a light absorbing layer in the form of fine dots or stripes provided for the inner surface of a panel of the tube on which the phosphor layer is formed, and a light reflection layer provided at an interface between the light absorbing layer and the phosphor layer. To manufacture the fluorescent screen, a photosensitive resin layer coated on an inner surface of the panel is exposed to light through a photomask mounted on outside of the panel to form a pattern. Nonluminous light absorbing substance is applied on the pattern to form the light absorbing layers.
    Type: Grant
    Filed: December 28, 1987
    Date of Patent: August 8, 1989
    Assignee: Hitachi, Ltd.
    Inventors: Yoshifumi Tomita, Masahiro Nishizawa, Saburo Nonogaki
  • Patent number: 4833364
    Abstract: An electron gun for a color picture tube has at least a cathode, a control grid, an accelerating grid, a focus grid and an anode, each of which has three apertures aligned in line. The focus grid and the anode made of elongated plates serves as main lens electrodes, and the apertures of the focus grid and the anode constitute a main lens assembly. The three apertures of each of the elongated plates has a central aperture defined by two first curves arcuated outward, two side apertures each of which is defined by a second curve as an inner half arcuated inward and a third curve as an outer half arcuated outward, the first and second curves being less arcuated than the third curve. The three apertures are aligned such that the major axes thereof are parallel to a shorter axis of the elongated plate and are located at equal intervals. The three apertures are spaced apart from each other through corresponding bridge portions.
    Type: Grant
    Filed: April 2, 1985
    Date of Patent: May 23, 1989
    Assignee: Hitachi, Ltd.
    Inventors: Yukihiro Izumida, Shoji Shirai, Hidemasa Komoro, Kazuo Majima, Akio Yamaguchi
  • Patent number: 4833575
    Abstract: The present invention provides a brightness equalizing light filter system which can be utilized as the bottom panel or as one of a set of bottom panels in an indirect fluorescent light fixture to evenly illuminate the fixture to approximately the same degree of brightness as the surrounding area which it lights. The brightness equalizing light filter system comprises a translucent diffuser panel with an opaque, electrically-connected pattern of thin metal film deposited thereon, wherein the density of the opaque pattern for each point on the panel is proportional to (or the linear function of) the intensity of light impinging on that point from the light source. The metal film serves both as the required electrical ground to act as a starting aid for the lamps and as a reflecting surface to increase the photometric efficiency of the fixture.
    Type: Grant
    Filed: June 15, 1988
    Date of Patent: May 23, 1989
    Assignee: Lam Lighting Systems
    Inventor: James L. Hamilton
  • Patent number: 4805893
    Abstract: An abnormal-paper sensing apparatus in a printing machine which senses the presence of a front folded corner of a sheet of printing paper. The sheet of paper hits against front lays provided at a front end of an insertion guide plate and stops. The insertion guide plate has a pair of recesses provided in a front end portion thereof so as to extend thereacross at positions where the recesses can face the front corners of the sheet of paper which passes over the recesses. The recess have a triangular cross section with a longer side positioned on the side of the front end of the insertion guide plate and with a shorter side positioned on the side of the rear end of the insertion guide plate.
    Type: Grant
    Filed: November 25, 1987
    Date of Patent: February 21, 1989
    Assignee: Komori Printing Machinery Co., Ltd.
    Inventor: Akehiro Kusaka
  • Patent number: 4792975
    Abstract: Digital processing of speech signals for compression/expansion pitch change is provided by writing and reading a ROM at different rates and controlling the discard/repeat segments of memory to be approximately integral multiples of the pitch period with means to track the pitch period as it is changing and modify the discard/repeat segments accordingly.
    Type: Grant
    Filed: March 10, 1987
    Date of Patent: December 20, 1988
    Assignee: The Variable Speech Control ("VSC")
    Inventor: Kent W. MacKay
  • Patent number: 4791869
    Abstract: In a phase adjusting apparatus for a sheet-fed printing press for adjusting a relative phase in a rotational direction between a paper sheet feeder and a printing apparatus which are coupled through a chain, a sprocket is in internal contact with a tension side of the chain and is axially supported by a slide base. The slide base is supported to be movable in a direction substantially perpendicular to an extension direction of the tension side of the chain. A slide base driving apparatus is arranged on a press frame. A tension sprocket which is biased in a tension direction of the chain by compression coil springs so as to be in contact with a slack side of the chain.
    Type: Grant
    Filed: November 30, 1987
    Date of Patent: December 20, 1988
    Assignee: Komori Printing Machinery Co., Ltd.
    Inventor: Shigeo Furukawa
  • Patent number: 4774470
    Abstract: In a shield machine, there are provided an electromagnetic wave transmitting and receiving unit mounted on the top of the shield machine for radiating electromagnetic impulse wave toward an underground and for receiving the electromagnetic wave reflected from the underground, and a position sensor for collecting an information regarding the position of the electromagnetic wave transmitter and receiver unit. Data processing unit is provided for processing the signals from transmitter/receiver and the position sensor and sent through a transmission line. The data processing unit continuously displays the condition of the underground at the cutting face.
    Type: Grant
    Filed: March 31, 1986
    Date of Patent: September 27, 1988
    Assignee: Mitsui Engineering & Shipbuilding Co., Ltd.
    Inventors: Takamura Takigawa, Kazuaki Ezawa
  • Patent number: 4772816
    Abstract: The apparatus uses a magnetic field (80) to accelerate a charged particle radially towards a target electrode (10). The increased kinetic energy of the particles enables the particle to give up more electrical energy to the target electrode (10) than was initially given to it. This charges the target electrode (10), and the increased energy is extracted from the apparatus by connecting an electrical load between the target electrode and a point of lower or higher potential.
    Type: Grant
    Filed: October 14, 1986
    Date of Patent: September 20, 1988
    Assignee: Energy Conversion Trust
    Inventor: Geoffrey M. Spence
  • Patent number: 4772827
    Abstract: At least one of the focusing electrodes stages disposed between an acceleration electrodes stage and a rear focusing electrodes stage is constituted by first and second grid electrodes, confronting portions thereof having asymmetrical construction with respect to an electron beam axis. A constant focusing voltage is applied to the first grid electrode, and a dynamic focusing voltage gradually increasing or decreasing from the constant focusing voltage as the degree of beam deflection increases is applied to the second grid electrode.
    Type: Grant
    Filed: April 25, 1986
    Date of Patent: September 20, 1988
    Assignee: Hitachi, Ltd.
    Inventor: Kuniharu Osakabe
  • Patent number: RE32838
    Abstract: In an electronic musical instrument of digital processing type, key codes are stored in a memory channel by channel for respective tone productions. The stored key codes are utilized for determining pitches of respective tones to be produced. Upon depression of new keys, the formerly stored key codes are automatically added or subtracted channel by channel with the value for a certain note step toward the new key codes at a certain clock rate defining a glissando speed. Thus automatic glissando performances are easily realized.
    Type: Grant
    Filed: February 6, 1987
    Date of Patent: January 24, 1989
    Assignee: Nippon Gakki Seizo Kabushiki Kaisha
    Inventor: Hideo Suzuki