Patents Represented by Law Firm Eyre, Mann, Lucas & Just
  • Clutch mechanism for hoisting apparatuses
    Patent number: 4307870
    Abstract: The drum of a hoisting apparatus is axially shifted to frictionally engage a driving plate. The drum is shifted by rotating an adjacent, first disc about the drum axis relative to a coaxial stationary disc. Each of the discs has three holes of a particular configuration to define three cooperative pairs of holes. Each cooperative pair of holes receives a dowel of predetermined length so that rotation of the first disc causes the dowel to react against the discs and shift the first disc and drum away from the stationary disc and into frictional driving engagement with the driving plate.
    Type: Grant
    Filed: October 14, 1980
    Date of Patent: December 29, 1981
    Assignee: Elkem A/S
    Inventor: Johannes Sandvik
  • Glass-to-glass sealing method with conductive layer
    Patent number: 4302706
    Abstract: A glass-to-glass seal with an intervening layer of metal oxide is made using a frit containing a high lead content and a metallic nucleating agent. The metal oxide may optionally be used to provide conductive paths through the seal without embedded metallic conductors.
    Type: Grant
    Filed: January 14, 1980
    Date of Patent: November 24, 1981
    Assignee: Wagner Electric Corporation
    Inventor: Richard DuBois
  • Removable magnetic suspension system
    Patent number: 4302061
    Abstract: A removable magnetic suspension system for a rotor comprising at least one electromagnetic bearing constituted by an armature supported by a sleeve fast with the rotor and a stator mounted on a fixed support, and at least one electromagnetic rotor-position detector constituted by a fixed stator cooperating with a part forming an armature integral with the rotor for controlling the bearing characterized in that the detector is mounted independently of the bearing which it controls and comprises a stator removably mounted on a fixed support and disposed directly opposite a reference surface formed on the rotor and independent of the sleeve supporting the bearing armature.
    Type: Grant
    Filed: October 24, 1979
    Date of Patent: November 24, 1981
    Assignee: Societe Europeenne de Propulsion
    Inventor: Maurice Brunet
  • Pressure relief hole seal for a sealed-beam headlamp
    Patent number: 4302697
    Abstract: The invention relates to automobile sealed-beam headlamps in which a reflector and lens assembly are hermetically sealed by an epoxy resin. A pressure relief hole in the reflector eliminates the problem of excessive expansion and contraction of the atmosphere within the lamp such as would prevent forming a hermetic seal between the reflector and lens during the epoxy resin curing cycle. A deformable metal pellet forms a hermetic seal in the pressure relief hole. An epoxy resin is applied over the deformable metal seal and cured to produce a final permanent seal.
    Type: Grant
    Filed: November 19, 1979
    Date of Patent: November 24, 1981
    Assignee: Wagner Electric Corporation
    Inventors: Nickolas P. Demas, James E. Bair, Robert A. Grunder
  • Display unit
    Patent number: 4300299
    Abstract: A display assembly comprising a substantially vandal-proof enclosure for sheets of advertising, bus schedules, and the like is adapted for assembly at the site and mounting on different types of poles so that removal of previously mounted fixtures is not required.
    Type: Grant
    Filed: May 1, 1980
    Date of Patent: November 17, 1981
    Assignee: Almac Plastics
    Inventors: Lester Batky, Michael P. Batky, Jack Manne
  • Rear stop type lens system
    Patent number: 4298252
    Abstract: A rear stop type lens with highly corrected comatic flare is constituted of one convex meniscus lens, two concave lenses and one biconvex lens arranged in the order mentioned from the object side.
    Type: Grant
    Filed: August 30, 1979
    Date of Patent: November 3, 1981
    Assignee: Fuji Photo Optical Co., Ltd.
    Inventors: Yoshikazu Doi, Takaaki Uchida, Yutaka Sakai
  • Control of tungsten filament erosion in a halogen lamp
    Patent number: 4297611
    Abstract: The present invention is directed to an incandescent lamp having tungsten filaments and halogen gas in the lamp enclosure wherein an inoperative surrogate tungsten filament is incorporated to reduce the tendency for active halogen gas to attack the filament and other metal parts within the lamp enclosure.
    Type: Grant
    Filed: October 2, 1979
    Date of Patent: October 27, 1981
    Assignee: Wagner Electric Corporation
    Inventor: Salvatore F. Cortorillo
  • Method of manufacturing improved mineral board
    Patent number: 4297311
    Abstract: A method of producing an improved mineral board and the resulting product are disclosed. According to the present invention, the board is predominantly composed of perlite and a binder therefor, preferably urea-formaldehyde resin. The perlite is crushed after the composition is in its final shape but before the binder is set whereby its strength is substantially increased. The composition and process of making the board substantially reduce energy costs as compared to known methods for making wet-process mineral boards. The product composition may include up to 95% perlite by weight.
    Type: Grant
    Filed: October 17, 1979
    Date of Patent: October 27, 1981
    Assignee: Conwed Corporation
    Inventors: Norman Sherman, John H. Cameron
  • Method of precipitation of pure aluminiumchloride from solutions which contain ions of aluminium and magnesium
    Patent number: 4297327
    Abstract: Method of producing aluminiumchloride with a low content of magnesium from hydrochloric acid solutions which contain ions of aluminium and magnesium and from which the aluminiumchloride is precipitated by hydrochloric gas and where the precipitation is carried out continuously in cascade so that the major part of the aluminium will be precipitated from solutions in which the ratio between aluminium and magnesium calculated as g Al.sup.+3 /g Mg.sup.+2 is above 0,5. Produced aluminiumchloride may be transformed to aluminiumoxide by calcination.
    Type: Grant
    Filed: February 4, 1980
    Date of Patent: October 27, 1981
    Assignee: Elkem-Spigerverket A/S
    Inventors: Norvald Gjelsvik, Gunnar Hannestad, Ingleif Hundere, Jan H. Torgersen
  • Preparation of 2-isopropylamino pyrimidine
    Patent number: 4297495
    Abstract: The invention provides a process for the preparation of 2-isopropylamino-pyrimidine, the process comprising reacting bis(isopropylguanidine)sulphate with 1,1,3,3-tetraethoxy-propane in stoichiometric proportions at 40.degree.-60.degree. C., in acidic aqueous solution.
    Type: Grant
    Filed: June 30, 1980
    Date of Patent: October 27, 1981
    Assignee: Societe d'Etudes de Produits Chimiques
    Inventor: Andre Esanu
  • Method of producing a pure aluminiumoxide from solutions containing dissolved ions of aluminium and iron
    Patent number: 4297326
    Abstract: Method of producing aluminiumchloride with low contents of iron from solutions containing ions of aluminium and iron by precipitation of aluminiumchloride by means of hydrochloric gas where the solution from which the aluminiumchloride is precipitated contains at least 0.1 g Fe/l which solution has been formed by leaching of a natural mineral raw material or artifically produced aluminium-containing raw material by leaching with hydrochloric acid and/or sulphuric acid, respectively a mixture of such acids. The produced aluminiumchloride may be transformed to aluminiumoxide by calcination.
    Type: Grant
    Filed: February 4, 1980
    Date of Patent: October 27, 1981
    Assignee: Elkem-Spigerverket a/s
    Inventors: Norvald Gjelsvik, Ingleif Hundere
  • Bar feeding mechanism for machines for working rotating bar stock
    Patent number: 4295396
    Abstract: An improvement in bar feeding mechanisms is disclosed. The bar feeding mechanism which comprises a plurality of roller assemblies disposed on a frame has an adjustable stop for limiting the movement of the rollers toward the axis of the bar being fed. The mechanism is especially advantageous for irregularly shaped bars.
    Type: Grant
    Filed: April 22, 1980
    Date of Patent: October 20, 1981
    Assignee: Hermann Traub GmbH & Co.
    Inventor: Heinz Hasslauer
  • Conveyor with scrapers
    Patent number: 4295561
    Abstract: This invention provides a conveyor with scrapers for transporting and disposing of machining refuse, the conveyor consisting of a required number of chutes each of which is constructed to be portable and handy.
    Type: Grant
    Filed: July 18, 1977
    Date of Patent: October 20, 1981
    Inventors: Masaru Yasukawa, Soji Yasukawa
  • Master cylinder assembly with detachable reservoir
    Patent number: 4295336
    Abstract: A master cylinder assembly includes a body in which fluid pressure is developed. A fluid reservoir is detachably attached to the sides of the body. Fluid communication between the fluid reservoir and the body is provided through one of the sides of the body.
    Type: Grant
    Filed: February 5, 1980
    Date of Patent: October 20, 1981
    Assignee: Wagner Electric Corporation
    Inventor: Edward J. Falk
  • Rear stop type zoom lens
    Patent number: 4294521
    Abstract: A compact rear stop type zoom lens suitable for use with a camera having an electronically controlled shutter. The rear stop type zoom lens is comprised of two lens groups which effect variation in magnification when moved in opposite directions on the optical axis of the entire lens.
    Type: Grant
    Filed: August 30, 1979
    Date of Patent: October 13, 1981
    Assignee: Fuji Photo Optical Co., Ltd.
    Inventors: Yoshikazu Doi, Yutaka Sakai, Kazunori Ohno
  • Expansion tank and water box device for heat exchanger, such as a radiator of a motor vehicle
    Patent number: 4289507
    Abstract: An expansion tank and water box device for a heat exchanger with a nest of parallel tubes, such as a radiator of a motor vehicle, in which the water box housed inside the expansion tank is maintained by the assembly of the tank with the hollowed plate through which extend the ends of the tubes. Ribs are interposed between the water box and the expansion tank. Said ribs depend, for instance, from the expansion tank.
    Type: Grant
    Filed: June 13, 1979
    Date of Patent: September 15, 1981
    Assignee: Societe Anonyme Francaise du Ferodo
    Inventors: Patrick Cadars, Bruno Hellouin di Cenival
  • Reinforced thermoplastic film sheet
    Patent number: 4285998
    Abstract: A reinforced thermoplastic lightweight film sheet is disclosed in which a lightweight plastic net or net-like product is freely sandwiched between at least two layers of lightweight thermoplastic film. The net is freely movable with respect to the film layers except along selected strips where at least the plastic film layers are bonded together fixedly securing the net thereat therebetween. The reinforced sheet is especially useful as bagging material where it exhibits increased burst strength and rupture resistance and reduced elongation and creep.
    Type: Grant
    Filed: May 3, 1978
    Date of Patent: August 25, 1981
    Assignee: Conwed Corporation
    Inventor: Raymond J. Thibodeau
  • Exposure control compensating means for close-up photography
    Patent number: 4285585
    Abstract: In an automatic exposure control camera in which exposure is controlled based on an output of an arithmetic unit, the F-value information of the taking lens of the camera in the arithmetic unit is compensated by use of a distance information from a distance detector, and the exposure is controlled based on the compensated F-value, whereby the exposure is compensated in close-up photography.
    Type: Grant
    Filed: May 3, 1979
    Date of Patent: August 25, 1981
    Assignee: Fuji Photo Optical Co., Ltd.
    Inventor: Saburo Numata
  • Disk projector and catcher
    Patent number: 4277068
    Abstract: A flying saucer toy consisting of a pistol and a flying disk fired from said pistol, wherein the pistol includes a pair of resilient pinching blades between which the flying disk is loaded, one pinching blade having an opposing corner while the other having a slippery corner, a thrust provided by the pinching blades to the disk being transformed into a torque between the opposing and slippery corners, the pistol further including a landing spot for allowing a flying disk to land thereon during its flight, the flying disk having an inwardly concave bottom adapted to receive a lift efficiently.
    Type: Grant
    Filed: October 9, 1979
    Date of Patent: July 7, 1981
    Assignee: Kabushiki Kaisha Keiheisha
    Inventor: Sei'ichi Sasaki
  • Putter head
    Patent number: D260160
    Type: Grant
    Filed: May 29, 1979
    Date of Patent: August 11, 1981
    Assignee: Acushnet Company
    Inventors: Charles Giebel, Charles D. Rambo, Gary Spencer