Patents Examined by Palmer Demeo
  • Patent number: 4518891
    Abstract: A large-area electroluminescent (EL) faceplate for storage CRT is described. The EL faceplate has a non-planar mesh structure which includes individual current limiting resistance between a power source and an array of small-area active regions for improving the faceplate breakdown characteristics. The mesh, which comprises high conductivity strips and delivers power to the active regions, is substantially reduced in area relative to a simple conventional device, and is disposed on thick dielectric nonactive regions to further reduce the possibility of catastrophic breakdown.
    Type: Grant
    Filed: December 31, 1981
    Date of Patent: May 21, 1985
    Assignee: International Business Machines Corporation
    Inventor: Webster E. Howard, Jr.
  • Patent number: 4518893
    Abstract: CRT (cathode-ray tube) comprises an evacuated glass envelope, an electron-gun mount assembly housed in the envelope, the electrodes of said envelope being confined by closely-spaced glass surfaces, and a smooth, electrically-conductive coating of tin oxide on said glass surfaces opposite electrodes of said mount assembly. The electrically-conductive coating is electrically floating and, preferably, is a substantially-continuous circumferential band on the inner surface of the neck of the CRT.
    Type: Grant
    Filed: November 23, 1982
    Date of Patent: May 21, 1985
    Assignee: RCA Corporation
    Inventors: James Kane, John Murr, Jr.
  • Patent number: 4518892
    Abstract: A television tube having an electron gun and an aperture mask with a plurality of line of sight openings in the aperture mask wherein the line of sight openings in the aperture mask are partially defined by material on the cone side surface of the aperture mask and partially defined by material on the grade side surface of the aperture mask with the aperture opening size and shape varying in accordance with the position of the opening in the aperture mask. Two techniques known as the capital I and capital H resist layout techniques are taught to illustrate the formation of the aperture mask.
    Type: Grant
    Filed: September 13, 1982
    Date of Patent: May 21, 1985
    Assignee: Buckbee Mears Company
    Inventor: Roland Thoms
  • Patent number: 4517490
    Abstract: A dispersion type electroluminescent element comprising dielectric, which is liquid at -20.degree. to +60.degree. C. and has a dielectric constant of 30-80, a gelling agent, and an electroluminescent phosphor, when used as an electroluminescent layer, has a practical brightness, which is never lowered for a long time, and has less disturbance to the electroluminescent surface.
    Type: Grant
    Filed: May 24, 1982
    Date of Patent: May 14, 1985
    Assignee: Hitachi, Ltd.
    Inventors: Hideo Takahashi, Mitsuo Nakatani
  • Patent number: 4517487
    Abstract: This invention relates to improved CRT internal magnetic shielding means in the form of at least two one-piece substantially longitudinal open trough-like metallic shielding members of arcuate cross-sectional construction having closed rounded ends. Each member incorporates strengthening features and is free of constructional jointures. The members are attached to the rear of the supporting frame of the screen-related apertured member, being oriented at the top and bottom thereof with their longitudinal openings in facing relationship.
    Type: Grant
    Filed: March 14, 1983
    Date of Patent: May 14, 1985
    Assignee: North American Philips Consumer Electronics Corp.
    Inventor: Richard A. Tamburrino
  • Patent number: 4517488
    Abstract: In-line electron gun structure for color cathode ray tubes in which the final focussing and accelerating electrodes each employ three in-line tapered, partially overlapping apertures in facing relationship, and at least one pair of electron beam spot-shaping inserts associated with the central aperture of the focussing electrode.
    Type: Grant
    Filed: April 14, 1983
    Date of Patent: May 14, 1985
    Assignee: North American Philips Consumer Electronics Corp.
    Inventor: Donald L. Say
  • Patent number: 4517492
    Abstract: A gas discharge display/memory device is shown wherein the discharge is selectively and advantageously controlled, particularly for increased light output and panel brightness. The device comprises an ionizable gaseous medium in a thin gas chamber between a pair of opposed dielectric charge storage member, each member backed by an array of electrodes with each array oriented relative to the other so as to form a multiplicity of gas discharge cells. Both opposing storage surfaces of each cell are coated with a first layer of low electron yield material and a second layer of high electron yield material--in the geometric form of dots, lines, strips, etc.--the second layer being appropriately positioned such that it is surrounded by the first layer of low electron yield material and such that two opposing surfaces of high electron yield material at or near a discharge cell site cause the cell discharge to occur at the pair of opposing surfaces of high electron yield material.
    Type: Grant
    Filed: June 2, 1975
    Date of Patent: May 14, 1985
    Assignee: Owens-Illinois, Inc.
    Inventors: Bernard W. Byrum, Jr., Roger E. Ernsthausen
  • Patent number: 4516051
    Abstract: A cathode filament formed from a thin metal wire wound into a helical spiral is welded at its two ends to connection braces by means of a high energy beam such as a laser beam. By increasing the pitch of at least one of the turns near each of the two ends, welding is confined to a predefined number of turns and uniformly welded cathodes are obtained having filament resistances which differ by less than 1%.
    Type: Grant
    Filed: October 18, 1982
    Date of Patent: May 7, 1985
    Assignee: U.S. Philips Corporation
    Inventor: Jozef A. M. Hooft van Huijsduijnen
  • Patent number: 4516052
    Abstract: A dispenser for supplying metal vapor to an ion source. The metal is provided in a capsule which may be broken to release the metal by turning a knob which causes a capsule housing to move to the right, thus causing the capsule to break against a piston member. The piston member communicates with a conduit which in turn communicates with the associated ion source, partly shown in the drawing. A heating mantle is provided to vaporize the metal in the housing so that it can pass from the dispenser through a conduit, to the ion source.
    Type: Grant
    Filed: June 1, 1982
    Date of Patent: May 7, 1985
    Assignee: Dublier Scientific Limited
    Inventors: Phillip D. Prewett, Derek K. Jefferies, Neil A. Pashley, Thomas D. Cockhill
  • Patent number: 4516053
    Abstract: A flat panel display apparatus is disclosed which includes first and second insulating plates at least one of which is transparent, a first plurality of parallel electrodes mounted on one surface of the first plate, a second plurality of parallel electrodes mounted on one surface of the second plate to intersect at a predetermined angle to the first electrodes, the first electrodes being spaced with and opposed to the second electrodes to define a cross conductor matrix for locating glowing regions, and a plurality of parallel insulating barriers mounted on at least one surface of the first plate so as to extend in parallel with the first electrodes and project toward the second plate, the barriers having the same pattern, pitch and width as that of the first electrodes, and each of the barriers overlapping the respective one side edge portion of one of the first electrodes, and the first and second plates being joined together with their outer edges sealed and gas capable of glowing mounted between the plate
    Type: Grant
    Filed: December 29, 1981
    Date of Patent: May 7, 1985
    Assignee: Sony Corporation
    Inventor: Yoshifumi Amano
  • Patent number: 4514663
    Abstract: An electron beam injection structure for flat panel display device includes electron injection electrodes which span a beam guide assembly for propagating electron beams. One end of the electron injection electrodes is in closer proximity to the cathode than the corresponding end of the beam guide structure. The injection of electrons from the cathode to the beam guide structure therefore can be maximized by increasing the voltage on the electron injection electrodes while permitting changes in the operating voltages applied to the beam guide structure and other elements of the display device.
    Type: Grant
    Filed: April 29, 1983
    Date of Patent: April 30, 1985
    Assignee: RCA Corporation
    Inventor: Leon J. Vieland
  • Patent number: 4514661
    Abstract: An electron gun comprises at least one cathode for generating an electron beam along a beam path and a plurality of electrodes serially disposed along the beam path. The electrodes include at least one accelerating and focusing electrode having two spaced-apart electrode sections axially separated along a plane substantially perpendicular to the beam path. An arc-suppression resistor interconnects the spaced-apart electrode sections of the electrode. The interconnected electrode sections normally operate at substantially the same voltage. The arc-suppression resistor acts in the event of an arc to limit the arc current and prevent damaging cascading arcs.
    Type: Grant
    Filed: September 27, 1982
    Date of Patent: April 30, 1985
    Assignee: RCA Corporation
    Inventor: Robert P. Stone
  • Patent number: 4514659
    Abstract: An electron gun for a high resolution color display tube comprises three inline cathode assemblies, a control grid with three inline apertures, a screen grid with three inline apertures and slots at each aperture on a side facing away from the control grid, a first focusing electrode having three inline apertures facing the screen grid and three inline apertures facing away from the screen grid, and a second focusing electrode having three inline apertures facing the first focusing electrode. The diameters of the control grid apertures are in the range of 0.43 mm to 0.59 mm. The screen grid is spaced 0.13 mm to 0.26 mm from the control grid. The diameters of the screen grid apertures are in the range of 0.43 mm to 0.59 mm, and their thickness is in the range of 0.20 mm to 0.31 mm. The ratio of the depth of the slots in the screen grid to their widths is in the range of 0.13 to 0.23. The diameters of the apertures in the facing portions of both focusing electrodes are in the range of 4.06 mm to 5.
    Type: Grant
    Filed: March 4, 1982
    Date of Patent: April 30, 1985
    Assignee: RCA Corporation
    Inventor: Hsing-Yao Chen
  • Patent number: 4514660
    Abstract: A cathode-ray tube having an electron gun includes at least one cathode assembly comprising a tubular cathode sleeve, a heater filament disposed within the sleeve and a novel cathode eyelet coaxially surrounding at least a portion of the cathode sleeve and attached thereto. The cathode sleeve has oppositely disposed ends, one end being open and the other end being closed by a cap having an electron emitting coating thereon. The novel eyelet comprises a laminated bimetal member including a support layer and an emissivity modifying layer. The support layer has a distal end, a proximal end and a central portion therebetween. The proximal end of the support layer is attached to the open end of the cathode sleeve. The emissivity modifying layer is disposed on at least a portion of the interior surface of the central portion of the support layer to reduce radiation loss from the cathode sleeve and cap.
    Type: Grant
    Filed: November 29, 1983
    Date of Patent: April 30, 1985
    Assignee: RCA Corporation
    Inventor: Stephen T. Opresko
  • Patent number: 4514657
    Abstract: A spark plug for spark ignition type internal combustion engines includes an earth electrode formed of a heat-resisting metal, a central electrode, and a supplementary electrode provided on the earth electrode or the tip end of the central electrode. The supplementary electrode cooperates with one of the other electrodes to define therebetween a spark gap which is smaller in dimension than the normal spark gap defined between the earth and central electrodes. The supplementary electrode has a higher specific resistance than that of the earth electrode.
    Type: Grant
    Filed: April 24, 1981
    Date of Patent: April 30, 1985
    Assignee: Nippon Soken, Inc.
    Inventors: Toshihiko Igashira, Toru Yoshinaga
  • Patent number: 4514658
    Abstract: The novel CRT is similar in structure to prior art CRT's except for the color-selection structure, which, as in the prior CRT's is for producing a plurality of lenses for passing and focusing portions of electron beams to associated color groups of the target. In the novel CRT, the color-selection structure comprises at least one lenticular member having therein an array of windows associated with only one color group, each window having a half-width, r, and a conductive mesh having interstitial dimensions small compared to the phosphor elements in the color groups. The lenticular member is longitudinally spaced a distance, s, from the conductive mesh so that the ratio of the longitudinal spacing, s, to the half-width, r, of the window is much less than unity (s/r<<1), so that the lenticular member and the conductive mesh provide a strong lens action.
    Type: Grant
    Filed: March 31, 1983
    Date of Patent: April 30, 1985
    Assignee: RCA Corporation
    Inventor: Stanley Bloom
  • Patent number: 4513220
    Abstract: An ignition plug provided with a tubular center electrode through which open air is introduced into the engine cylinder to accelerate exhaust of the combustion gas from the cylinder in the exhaust stroke of an engine cycle. The tubular electrode has a double-check valve fitted therein to prevent leakage of the high-pressure gas from the cylinder when the cylinder pressure is above the ambient pressure. The valve is composed of two differently-weighted floats serially disposed in the center electrode, one of the floats being in operative position even if the other resonates with engine vibration.
    Type: Grant
    Filed: September 13, 1982
    Date of Patent: April 23, 1985
    Inventor: Mokichi Togashi
  • Patent number: 4513222
    Abstract: An inline electron gun in a color picture tube is improved by the addition of two slots that are spaced sufficiently close to and inward from the two apertures in a portion of the screen grid electrode facing an accelerating and focusing electrode. The slots cause a distortion of the electrostatic field formed between the two electrodes at the two apertures. The field distortion compensates for an opposite distortion within the main lens of the electron gun.
    Type: Grant
    Filed: January 27, 1983
    Date of Patent: April 23, 1985
    Assignee: RCA Corporation
    Inventor: Hsing-Yao Chen
  • Patent number: 4513221
    Abstract: The invention relates to internal magnetic shielding means for a cathode ray tube using a spun-funnel envelope portion. The sidewall of the shielding structure is of discretely shaped contour to provide a desired spatial compatibility with at least portions of a projecting glass ridge on the interior surface of the funnel.
    Type: Grant
    Filed: February 26, 1982
    Date of Patent: April 23, 1985
    Assignee: North American Philips Consumer Electronics Corp.
    Inventor: John D. Robbins
  • Patent number: 4510414
    Abstract: A rear earth yellow to red emitting phosphor exhibiting the sublinear characteristics when the current density of an excitation electron beam is increased. The phosphor is represented by the general formula:(Ln.sub.1-x-y,Eu.sub.x,Ce.sub.y).sub.2 O.sub.2 Sin which Ln is at least one of yttrium, gadolinium, lanthanum and lutetium, x is a number satisfying 10.sup.-4 .ltoreq.x.ltoreq.9.times.10.sup.-2, preferably 10.sup.-2 .ltoreq.x.ltoreq.8.times.10.sup.-2, and y is a number satisfying 10.sup.-6 .ltoreq.y.ltoreq.2.times.10.sup.-3, preferably 2.times.10.sup.-6 .ltoreq.y.ltoreq.10.sup.-3. It exhibits a wide reproduced color range, and free of color drift at a high current. The phosphor is suitable for use in a multi-color cathode ray tube and a multi-color low-velocity electron excited fluorescent display device, and makes it possible to realize a high-performance electronic display unit.
    Type: Grant
    Filed: March 9, 1983
    Date of Patent: April 9, 1985
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Sigeo Fujino, Takashi Hase, Akio Toshinai