Patents Represented by Law Firm Kirschstein, Kirschstein, Ottinger & Israel
  • High resolution radar system
    Patent number: 4688043
    Abstract: A radar system for tracking airborne targets, in which the transmitted pulse signal is swept over a predetermined frequency range (3). A local oscillator (15) in the receiver is swept over a similar frequency range the L.O. sweep modulation being initiated (20) by the first significant target return signal. Reflectors on the target at different ranges therefore produce different I.F.s in the receiver. Discrimination between the various target reflector features is thus achieved by filtering (25, 27, 29) the I.F. signals in a series of small bands, each band corresponding to a particular target-feature range. Azimuth, elevation and magnitude of a target feature can thus be obtained for each range cell.
    Type: Grant
    Filed: April 28, 1982
    Date of Patent: August 18, 1987
    Assignee: Marconi Avionics Limited
    Inventor: John Welsh
  • Angular position sensors
    Patent number: 4684249
    Abstract: An angular position sensor for sensing the relative angular position of a helmet worn by a passenger in an aircraft with respect to the aircraft is disclosed. The sensor includes three spaced linear photodetector arrays fixed to the aircraft, and a light source mounted on the helmet and arranged to produce a light beam which rotates cyclically about an axis in the helmet so as to successively irradiate a photodetector within each array within each cycle. A sensor attached to the helmet produces a time datum signal during each cycle. A computer uses the location within the arrays of the irradiated photodetectors, and the relative timing of the irradiations with respect to the time datum to provide the required azimuth, elevation and roll angles of the helmet.
    Type: Grant
    Filed: April 3, 1985
    Date of Patent: August 4, 1987
    Assignee: GEC Avionics Limited
    Inventor: Stafford M. Ellis
  • Wave-propelled marine vessel
    Patent number: 4684350
    Abstract: A wave-propelled marine vessel is advanced by rising and falling water currents acting on pivotable fins located on submerged outer fin assemblies, and on other fins on a submerged central fin assembly. The outer fin assemblies are adjustably positioned to be integral wave lengths apart to maximize forward propulsion efficiency.
    Type: Grant
    Filed: July 31, 1986
    Date of Patent: August 4, 1987
    Inventor: Daniel D. DeLima
  • Solar cell arrays
    Patent number: 4683348
    Abstract: A solar cell array comprises a common member (13) on which solar cells (4) of a plurality of solar cell units are mounted, the primary reflectors (2) of the cell units being formed on shaped portions of a first unitary member (7) and the secondary reflectors (3) on shaped portions of a second unitary member (8). The common member (13) serves to conduct heat away from the cells.
    Type: Grant
    Filed: April 23, 1986
    Date of Patent: July 28, 1987
    Assignee: The Marconi Company Limited
    Inventors: Alastair N. Pidgeon, Arthur L. Webb
  • Surge voltage protective circuit arrangements
    Patent number: 4683514
    Abstract: A circuit arrangement for protecting a load connected across a supply against surge voltage includes a gas-filled arrester connected in parallel with a semiconductor arrester across the load. A firing circuit is provided which is responsive to the breakdown of the semiconductor arrester to apply a voltage between a trigger electrode in the gas-filled arrester and another electrode within the gas-filled arrester to reduce the breakdown voltage of the discharge gap of the gas-filled arrester. The arrangement is operative for protection against surge voltages between the supply lines, and also between each line and earth.
    Type: Grant
    Filed: October 1, 1985
    Date of Patent: July 28, 1987
    Assignee: The M-O Valve Company Limited
    Inventor: Kenneth G. Cook
  • Switch selector mechanism
    Patent number: 4681988
    Abstract: A selector mechanism, especially for actuating a switch and capable of selectively operating in two different modes utilizing the same operation of a common actuator, comprises a pair of links each connected at one end to an actuating member and carrying at the other end a projection engaging in a respective slot in an operating member, each of which slots has a recess into which the respective projection rests in a neutral position of the operating member, and a selector device operable to cause a surface thereof to engage one or other of the projections and retain it within the respective recess, so as to cause movement of the respective link to be transmitted to the operating member and move it in a direction determined by the link, while leaving the projection associated with the other link free to move along its respective slot.
    Type: Grant
    Filed: January 16, 1986
    Date of Patent: July 21, 1987
    Assignee: Associated Electrical Industries Limited
    Inventors: George A. Hodkin, Roger H. Blane
  • Lamps and ribbon seals
    Patent number: 4682071
    Abstract: An electric lamp designed to operate in air and of the type incorporating at least one current-supply foil embedded within and extending along a light transmitting stem and welded at its inner and outer ends to an inner conductor and a terminal conductor respectively, in which the end face of the stem is unenclosed and is such that a proportion of radiation which is incident upon it from the lamp in use thereof is directed away from the foil and adjacent region of the terminal conductor. The invention is especially applicable to high power lamps and has the effect of reducing the temperature of the outer ends of the current-supply foils, which are vulnerable to oxidation.
    Type: Grant
    Filed: June 19, 1986
    Date of Patent: July 21, 1987
    Assignee: The General Electric Company, p.l.c.
    Inventor: Paul Thorpe
  • Electric lamps having outer stem surface which minimizes internal reflections
    Patent number: 4677338
    Abstract: In a lamp having at least one seal of solid light-transmitting material, in which is embedded at least one current-supply foil, visible, I.R. and U.V. radiations which would otherwise be internally reflected from the seal surface are dispersed by providing on the seal either a non-uniform surface region or a light-dispersive coating, thus reducing the temperature of the outer ends of the foil and thereby reducing the risk of failure caused by oxidation. The seal may be formed with ribs or sand blasted or it may be provided with a coating of glass containing reflective particles or gas bubbles.
    Type: Grant
    Filed: October 15, 1985
    Date of Patent: June 30, 1987
    Assignee: The General Electric Company, p.l.c.
    Inventors: Angus B. Dixon, Alan Prest, Paul Thorpe
  • Narrow-bodied, single- and twin-windowed portable scanning head for reading bar code symbols
    Patent number: 4673805
    Abstract: A narrow-bodied, single- and twin-windowed, hand-held, laser scanning head for reading bar code symbols includes at least one window mounted at the rear region of the head, and through which either the incident beam going to the symbol and/or the reflected beam returning from the symbol, passes unobstructedly and exteriorly of, and past, the front and intermediate body regions of the head. A field-replaceable laser tube arrangement, a laser tube and method of making the same, an arrangement for and method of controlling a scanning system, optical passive elements for increasing the depth of field, a trigger protective device, and a one-piece support bench and method of fabricating the same by mass-production techniques are also disclosed.
    Type: Grant
    Filed: August 1, 1983
    Date of Patent: June 16, 1987
    Assignee: Symbol Technologies, Inc.
    Inventors: Howard M. Shepard, Edward D. Barkan, Jerome Swartz
  • Tire temperature measurement apparatus
    Patent number: 4673298
    Abstract: A tire temperature measurement apparatus comprising a microwave receiver (9 or 11) sensitive to electromagnetic radiation in a waveband in the frequency spectrum 10 to 100 GHz and a directional antenna (5 or 7) coupled to the receiver input and responsive to radiation from a predetermined surface area only of the tire (1 or 3).
    Type: Grant
    Filed: July 3, 1984
    Date of Patent: June 16, 1987
    Assignee: GEC Avionics Limited
    Inventors: Ian Hunter, Graham Mason, Michael Scorer
  • Air and liquid pump for cushion shoes, combined a pressure scale and a ball pen
    Patent number: 4673007
    Abstract: This invention concerns a kind of air liquid pump particularly used for cushion shoes, combined with a pressure scale and a ball pen. It is portable and can indicate the pressure of the inflated air or liquid and can be also used as a pen.
    Type: Grant
    Filed: September 15, 1986
    Date of Patent: June 16, 1987
    Inventor: Ing-Chung Huang
  • Carrying bag for cones with frozen comestibles
    Patent number: 4674128
    Abstract: Comestible cones with frozen edibles deposited thereon are safely and securely held and transported in a carrying bag. The carrying bag contains a handle portion which is positioned above the center of gravity of the cone-filled carrying bag and insures that said filled carrying bag is in stable equilibrium. The bag comprises two substantially planar sheets, one of which is juxtaposed behind and in registration with the other. Said two sheets are joined together along their bottoms, along a portion of their sides, and intermediate their sides along a plurality of spaced zones which taper diagonally downwardly toward one another to thus define a plurality of quasi-conical pockets. The non-joined portions of the sides of said sheets define upper panel segments. The cones are receivable in the pockets of the bag and are securely and safely held therein during transport of said cones from place to place.
    Type: Grant
    Filed: October 29, 1984
    Date of Patent: June 16, 1987
    Inventor: Stanley L. Ruff
  • Cassegrain aerial system
    Patent number: 4673947
    Abstract: A high bandwidth microwave antenna feed comprises a spigot (4) of relatively high dielectric constant protruding from a conventional hollow waveguide (3) and a generally conical member (12) of relatively low dielectric constant fitted coaxially onto, so as to expand from the protruding spigot. The base portion (2) of the conical member is silvered and constitutes a sub-reflector. In use, microwave radiation from the hollow waveguide is refracted at the spigot/conical member interface and is reflected from the sub-reflector to a facing main reflector (1). The two-part dielectric construction enables the dimensions of the sub-reflector to be reduced, thereby reducing blockage of the main reflector and increasing the bandwidth of the system.
    Type: Grant
    Filed: February 20, 1986
    Date of Patent: June 16, 1987
    Assignee: The Marconi Company Limited
    Inventor: Paul Newham
  • Integrated circuit packages
    Patent number: 4672418
    Abstract: An integrated circuit package including a lead frame (11) sealed between base and cap portions (1 and 3) of the package enclosure. Outwards of the seal each lead (13) in the frame (11) follows an angled path so that manipulation of leads outside the package is unlikely to damage the seal. The angling of the leads (13) is effected by appropriately shaping the cap and base parts (1 and 3) of the package.
    Type: Grant
    Filed: April 8, 1985
    Date of Patent: June 9, 1987
    Inventors: Peter Moran, Barry Vyse
  • Phase-lock loop systems
    Patent number: 4672330
    Abstract: A phase-lock loop system with particular use in radar tracking systems is disclosed. From a number of input signals of varying frequencies such as a carrier frequency and several side band frequencies the system can lock into phase and frequency with the input which has the largest amplitude by sweeping across a predetermined range of frequencies and allowing the phase-lock loop to operate only when a predetermined amplitude is exceeded.
    Type: Grant
    Filed: July 23, 1974
    Date of Patent: June 9, 1987
    Assignee: The Marconi Company Limited
    Inventors: John T. Floyd, Christopher D. Huggett, Michael A. Jones, John R. G. Woods
  • Permanent split-phase capacitor induction motor
    Patent number: 4672284
    Abstract: A permanent split-phase capacitor induction motor having a capacitor (7) connected in series with an auxiliary winding (5) via an electronic switch (9) which is operated by a control circuit (11, 13) so as to obtain a higher starting torque than if the switch were permanently closed.The control circuit suitably comprises an integrating (21 to 31) responsive to the voltage appearing across the switch (9) and trigger circuit (19) which closes the switch when the output of the integrating circuit exceeds a threshold value, the integrating circuit resetting when the switch closes, and the switch reopening at the next current zero.
    Type: Grant
    Filed: October 8, 1985
    Date of Patent: June 9, 1987
    Assignee: Associated Electrical Industries Limited
    Inventor: Philip A. Ward
  • Reversible electrolytic system for softening and dealkalizing water
    Patent number: 4671863
    Abstract: System for softening and dealkalizing water by feeding said water to both chambers of an electrolytic cell which chambers are separated by a cation exchange membrane, applying DC voltage to the electrodes of the cell, at intervals, reversing the applied polarities, and drawing soft dealkalized water from the anodic compartments.
    Type: Grant
    Filed: October 28, 1985
    Date of Patent: June 9, 1987
    Inventor: Alvaro R. Tejeda
  • Wall-mountable wiring installation
    Patent number: 4669804
    Abstract: A boxless wiring installation in which a wall switch or a duplex electrical receptacle may be mounted with snap action within and on a support member which is mounted by means of swing-out wall clamps to a wall.
    Type: Grant
    Filed: June 14, 1985
    Date of Patent: June 2, 1987
    Assignee: Eagle Electric Mfg. Co., Inc.
    Inventor: Ronald G. Munroe
  • Panel-mounted duplex electrical receptacle and power terminal strip
    Patent number: 4669807
    Abstract: A panel-mounted duplex electrical receptacle easily is ganged with another receptacle to form a power terminal strip of any desired length. Each receptacle is mounted with a snap action in a cutout formed in a panel. The receptacles are wired together by inserting a bare conductor into aligned channels formed in the receptacles. Resilient tongues are provided on contact strips provided within the receptacles for pressing the inserted conductor into electromechanical contact with the respective contact strip. A resilient tab on each receptacle lockingly retains the inserted conductor in each channel. Each contact strip is cut from a substantially planar preform in a scrapless manner.
    Type: Grant
    Filed: September 20, 1985
    Date of Patent: June 2, 1987
    Assignee: Eagle Electric Mfg. Co., Inc.
    Inventor: Ronald G. Munroe
  • Electrical insulating bushing with a weather-resistant sheath
    Patent number: 4670625
    Abstract: A bushing arrangement for conveying an electrical conductor through the casing of high voltage electrical apparatus exposed to the weather comprises a rigid member of synthetic resin cast around, so as to be bonded in a gas tight manner to, the conductor, and incorporating an exterior portion protruding outside the casing, the member being enclosed, over at least the major part of its exterior portion, by a plurality of insulting axially-overlapping weather-resistant collars and a stress cone each having a creepage flange or shed, the member being secured to the casing by a flanged collar. The insulating member may be made of a relatively cheap non-weather-resistant epoxy resin and the collars of EPDM rubber.
    Type: Grant
    Filed: July 16, 1986
    Date of Patent: June 2, 1987
    Inventors: Henry S. Wood, John L. Davenport