Fusion Bonding Of Glass To A Formed Part Patents (Class 65/36)
  • Patent number: 5157831
    Abstract: A process for preparing an electrical connector from a glass plug, a rigid metal shell, and at least one pin conductor is disclosed.The glass plug is made by mixing glass powder with binder, forming a green body, debindering the green body, and heating the debindered green body.The metal shell and metal pin conductor(s) are first cleaned by heating them in a hydrogen-containing atmosphere, and thereafter forming an oxide coating on their surfaces.An assembly is then formed from the rigid metal shell, the glass plug, and the pin conductor(s). This assembly is then heat treated to form the electrical connector.
    Type: Grant
    Filed: December 20, 1991
    Date of Patent: October 27, 1992
    Assignees: Alfred University, Howard J. Greenwald
    Inventors: Xingwu Wang, Jun Lou
  • Patent number: 5152818
    Abstract: Disclosed is a method of making a polarization retaining single-mode optical fiber. Longitudinal grooves are formed on opposite sides of a cylindrically-shaped core perform having a glass core surrounded by cladding glass. The core preform is inserted into a glass tube, the tube is shrunk onto the core preform, and the interface between the core preform and the tube is fused to form a solid preform having longitudinal apertures on opposite sides of the core. An etchant gas is flowed through the apertures to enlarge the apertures into holes having a substantially round cross-section. Inserted into each aperture is a stress rod formed of glass having a coefficient of expansion different from that of the cladding glass. The resultant draw blank is drawn to form a single-mode optical fiber having a core that is subjected to a stress-induced birefringence.
    Type: Grant
    Filed: November 9, 1990
    Date of Patent: October 6, 1992
    Assignee: Corning Incorporated
    Inventors: George E. Berkey, Venkata A. Bhagavatula, Robert M. Hawk, Steven H. Tarcza
  • Patent number: 5143533
    Abstract: Disclosed is a method of producing thin films by sintering which comprises:a. coating a substrate with a thin film of an inorganic glass forming parulate material possessing the capability of being sintered, andb. irridiating said thin film of said particulate material with a laser beam of sufficient power to cause sintering of said material below the temperature of liquidus thereof.Also disclosed is the article produced by the method claimed.
    Type: Grant
    Filed: August 22, 1991
    Date of Patent: September 1, 1992
    Assignee: The United States of America as represented by the Department of Energy
    Inventor: Raymond M. Brusasco
  • Patent number: 5133795
    Abstract: A method is provided for making a hermetically sealed package for a power semiconductor wafer having substantially entirely silicon materials selected to have coefficients of thermal expansion closely matching that of the power semiconductor wafer. A semiconductor wafer such as a power diode includes a layer of silicon material having first and second device regions on respective sides. An electrically conductive cap and base of silicon are disposed in electrical contact with the first and second regions of the semiconductor device, respectively. An electrically insulative sidewall of silicon glass material surrounds the semiconductor wafer, is spaced from an edge thereof, and is bonded to the cap and base for hermetically sealing the package.
    Type: Grant
    Filed: April 8, 1991
    Date of Patent: July 28, 1992
    Assignee: General Electric Company
    Inventor: Homer H. Glascock, II
  • Patent number: 5095519
    Abstract: Signal strength in an optical fiber transmission path is attenuated in one direction to a desired lower level by incorporating a selected length of coreless, undoped fiber of the same diameter into the signal-carrying fiber. On encountering the insert, the beam diameter expands to a pre-selected value at the far end of the insert. The ratio of the beam diameter at this point to the diameter of the adjacent fiber end establishes the attenuation factor. Steps are taught for achieving high consistency in both structural strength of the attenuator as well as the attenuation factor.
    Type: Grant
    Filed: November 30, 1990
    Date of Patent: March 10, 1992
    Assignee: AT&T Bell Laboratories
    Inventor: Carl S. Dorsey
  • Patent number: 5055957
    Abstract: A low magnetic isolation closure glass for use in multitrack magnetic tape heads has been prepared by combining a specific lead borosilicate glass with a specific borosilicate glass in a 60/40 weight percent ratio. The glass formed from the combination exhibits compatibility with ferrite and has reduced wear. Controlling the anneal temperature regulates the residual stress of the closure glass produced, and thus, provides some control over the wear characteristics of the glass.
    Type: Grant
    Filed: November 2, 1990
    Date of Patent: October 8, 1991
    Assignee: International Business Machines Corporation
    Inventors: Gerald A. Daughenbaugh, Eugene B. Rigby
  • Patent number: 5049176
    Abstract: Fiber composites, particularly for imaging, easy to manufacture even with great cross-sectional area, in which fibers are in a peak-to-valley relation with abutting pairs of fibers throughout.
    Type: Grant
    Filed: July 9, 1990
    Date of Patent: September 17, 1991
    Assignee: Galileo Electro-Optics Corp.
    Inventors: Lee M. Cook, Danna A. Mancini, Susan M. Patternson
  • Patent number: 5043004
    Abstract: An assembly structure and a method for making a ceramic lid for a hermetically sealed package for an EPROM circuit are disclosed. The assembly structure includes, in combination, a ceramic lid, a UV transparent lens, and two fixtures for supporting the lens in the lid. The two fixtures are configured to contact the lens only at predetermined areas which are not crucial to UV transparency. The UV transparent lens is hermetically sealed to the ceramic lid by firing the assembly structure. The assembly structure prevents the lens from attracting foreign particulate matter during firing, thereby leaving the surfaces of the lens clean. The method provides a ceramic lid having a UV transparent lens hermetically sealed thereto, which finds wide use in integrated circuit packages for high-density EPROM's because of the untainted surfaces of the lens.
    Type: Grant
    Filed: August 29, 1990
    Date of Patent: August 27, 1991
    Assignee: Kyocera America, Inc.
    Inventor: Nobuaki Miyauchi
  • Patent number: 5030336
    Abstract: The cathode sub-assembly of a polarographic sensor comprises an elongate housing with a longitudinal opening therethrough and with noble metal wires extending completely through the opening, the wires held symmetrically in the longitudinal opening by an extensive plug of glass which is solidified in situ in sealing contact with the wires and with the wall of the longitudinal opening. A suitable tubular anode is provided through which the cathode sub-assembly protrudes, and a flexible membrane of an inert material, which is permeable to gas and impermeable to water vapor and other than gaseous dissolved solutes, is secured in sealed relationship over the anode and the cathode, with a film of electrolyte bathing the anode and the cathode and contained by the membrane.
    Type: Grant
    Filed: September 5, 1989
    Date of Patent: July 9, 1991
    Inventor: Cameron J. Koch
  • Patent number: 4983251
    Abstract: A method for manufacturing a semiconductor device comprising at least a support body and a monocrystalline semiconductor body, in which both bodies are provided with at least one flat optically smooth surface obtained by means of bulk-reducing polishing (mirror polishing), and at least the semiconductor body is then provided at the optically smooth surface with an electrically insulating layer with at least the electrically insulating layer on the semiconductor body being subjected to a bonding-activating operation, whereupon both bodies after their flat surfaces have been cleaned, are contacted with each other in a dust-free atmosphere in order to obtain a rigid mechanical connection, after which they are subjected to a heat treatment of at least 250.degree. C., whereupon the semiconductor body is etched to a thin layer having a thickness lying between 0.05 and 100 .mu.m.
    Type: Grant
    Filed: June 16, 1986
    Date of Patent: January 8, 1991
    Assignee: U.S. Philips Corporation
    Inventors: Jan Haisma, Theodorus M. Michielsen, Jan A. Pals
  • Patent number: 4978379
    Abstract: A method of manufacturing a semiconductor substrate includes the steps of performing flame electrolysis on a galss source with an oxyhydrogen flame, spray-depositing the resultant glass particles on a joint surface of a semiconductor substrate, placing another semiconductor substrate on the deposited glass particles and performing heat-treatment, and joining the two substrates by sintering the glass particles.
    Type: Grant
    Filed: October 31, 1988
    Date of Patent: December 18, 1990
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Renshi Sawada, Junji Watanabe
  • Patent number: 4964688
    Abstract: An optical fiber connector element comprises a connector body having a passage extending therethrough, the passage having a forward portion for receiving an optical fiber and a rearward portion which is wider than the forward portion for receiving an optical fiber and surrounding protective material, and an optical fiber stub secured within the forward portion of the passage, the optical fiber stub having a forward end surface which has an optical finish. The connector element is used to terminate an optical fiber cable by cutting the cable to a desired length, stripping back an end portion of protective material surrounding an optical fiber of the cable to expose an end portion of the optical fiber, and securing the exposed fiber end portion and an end portion of the protective material remaining on the fiber in the connector body passage with the fiber end portion in abutment and axial alignment with the fiber stub.
    Type: Grant
    Filed: July 27, 1989
    Date of Patent: October 23, 1990
    Assignee: Northern Telecom Limited
    Inventors: Kevin G. Caldwell, Steve J. Lischynsky, Elza V. Seregelyi
  • Patent number: 4940635
    Abstract: Process to manufacture glass or glass ceramic articles with a graphite insert encapsulated therein, characterized by the fact that said encapsulation is made in the presence of one or several gas getter metals chosen among aluminum, chromium, niobium, tantalum, titanium and zirconium.
    Type: Grant
    Filed: November 23, 1988
    Date of Patent: July 10, 1990
    Assignee: Corning Incorporated
    Inventors: Andre Andrieu, Jean-Pierre P. Davot, Jean-Pierre A. M. Thibieroz
  • Patent number: 4923273
    Abstract: A method for producing reflectors in a continuous length of optical fiber is disclosed. The present process includes the steps of preparing the ends of two or more optical fibers, placing one or more of these fibers in a vacuum system and applying a metallic or dielectric coating to the fiber ends, and then fusing the prepared, coated ends of the fibers together until the reflectivity of the region reaches a desired value.
    Type: Grant
    Filed: December 19, 1988
    Date of Patent: May 8, 1990
    Assignee: Texas A&M University System
    Inventor: Henry F. Taylor
  • Patent number: 4917934
    Abstract: A telescope mirror blank having a supporting network core composed of sintered ceramic struts, and a method of forming such core from a thermally crystallizable, powdered glass and as a separate component from the faceplate, are disclosed. Optionally, the mirror faceplate may be formed in a similar manner.
    Type: Grant
    Filed: April 27, 1989
    Date of Patent: April 17, 1990
    Assignee: Corning Incorporated
    Inventor: Daniel R. Sempolinski
  • Patent number: 4898604
    Abstract: A method of manufacturing a blank for a light-weight mirror. Graphite molding bodies are positioned at regular intervals on a base that functions as a mirror plate or backing plate. The base is surrounded up to the top of the molding bodies with a graphite wall. The interstices between the molding bodies and between the wall and the molding bodies are filled with granular quartz. The assembly is heated in an evacuated furnace to approximately 1730.degree. C. into a honeycomb-shaped supporting structure that is securely fastened to the base. The graphite molding bodies and wall are removed after cooling. Either a backing plate or a mirror plate in the form of another plate is applied to the resulting supporting structure.
    Type: Grant
    Filed: March 1, 1988
    Date of Patent: February 6, 1990
    Assignee: Heraeus Quarzschmelze GmbH
    Inventor: Paul Sauerwein
  • Patent number: 4877303
    Abstract: An optical fiber connector element comprises: a connector body having a passage extending therethrough, the passage having a forward portion for receiving an optical fiber and a rearward portion which is wider than the forward portion for receiving an optical fiber and surrounding protective material; and an optical fiber stub secured within the forward portion of the passage, the optical fiber stub having a forward end surface which has an optical finish. The connector element is used to terminate an optical fiber cable by: cutting the cable to a desired length; stripping back an end portion of protective material surrounding an optical fiber of the cable to expose an end portion of the optical fiber; and securing the exposed fiber end portion and an end portion of the protective material remaining on the fiber in the connector body passage with the fiber end portion in abutment and axial alignment with the fiber stub.
    Type: Grant
    Filed: September 22, 1988
    Date of Patent: October 31, 1989
    Assignee: Northern Telecom Limited
    Inventors: Kevin G. Caldwell, Steve J. Lischynsky, Elza V. Bagi
  • Patent number: 4861364
    Abstract: A method for assembling and soldering pieces of stained glass involves placing a template to outline a mosaic fit of glass pieces on a workboard by nailing flat sided nails to the outer perimeter of the glassware as defined by the template in which glass pieces are cut and wrapped with copper foil positioned on the template with attaching the support assembly to a rotatable workboard which is positioned to solder the glassware together in which the template is subsequently removed and the glassware turned and rotated on the workboard and the glassware is soldered together.
    Type: Grant
    Filed: November 14, 1988
    Date of Patent: August 29, 1989
    Inventors: Ted A. Trujillo, Suzanne S. Trujillo
  • Patent number: 4857093
    Abstract: A chopped fiber reinforced glass or glass-ceramic matrix integral structure having no bond lines. The structure comprises a face plate, a back plate, and a grid array of chamber walls. The face plate connects to the back plate through the chamber walls forming a grid array of chambers. The back plate has an array of apertures that lead to the chambers. The structure is fabricated by disposing at least two mold inserts in a mold housing having a bottom and sides. The mold inserts are in contact and in an array that follows the surface contours of the mold. The mold inserts and mold insert array is not capable of lateral movement. Heated chopped glass or glass ceramic impregnated fibers are displaced into the mold under pressure to form a composite. The composite is cooled and the mold inserts are removed by chemical dissolution.
    Type: Grant
    Filed: November 23, 1987
    Date of Patent: August 15, 1989
    Assignee: United Technologies Corporation
    Inventors: Karl M. Prewo, Eric Minford
  • Patent number: 4853020
    Abstract: A microchannel electron multiplier is formed by placing into a glass tube a plurality of bundles optical fibers, each having an etchable glass core and a glass cladding which is non-etchable when subjected to the conditions used for etching the core material. The fiber bundles located around the inside edge of the glass tube are replaced by support fibers having both a core and a cladding of a material which is non-etchable under the above-described conditions. The assembly of the tube, bundles and support fibers is heated to fuse the tube, bundles and support fibers together. The etchable core material is then removed and the assembly sliced into wafers. The inner surface of each of the claddings which bound the channel formed after removal of the core material is rendered electron emissive by reduction of the lead oxide by hydrogen gas. Metal films are deposited onto the opposed surfaces of each of the wafers to form contacts.
    Type: Grant
    Filed: January 25, 1988
    Date of Patent: August 1, 1989
    Assignee: ITT Electro Optical Products, A Division of ITT Corporation
    Inventor: Ronald A. Sink
  • Patent number: 4830646
    Abstract: A method is disclosed in which the bare glass fibers are firmly soldered into a solder bath of the splicing device and, after being scored and broken, unsoldered again. To that end, the glass fibers are placed across the solder bath, the solder is heated, and the level of the molten solder is raised above the glass fibers by pressing a slide into the solder trough. The heat supply to the solder bath is subsequently cut off. After the solder has cooled, the glass fibers are firmly fixed therein. To release the fixed glass fibers, the solder is liquefied again. The device for carrying out the method consists essentially of a slotted guide bar, which serves to hold the glass fibers apart, and the solder bath. The latter is a copper block which is thermally insulated from the splicing device and has a projection at one end for attaching a soldering iron.
    Type: Grant
    Filed: November 12, 1987
    Date of Patent: May 16, 1989
    Assignee: Alcatel N.V.
    Inventor: Rolf Rossberg
  • Patent number: 4824712
    Abstract: A method and composition for coating scored regions or holes in glass articles prior to heat treatment in order to maintain residual compressive stresses and reduce venting are disclosed. The method and composition of the present invention utilize silica-containing sols which gel and density and ultimately form glassy films during the heat treatment of the coated glass articles.
    Type: Grant
    Filed: October 8, 1985
    Date of Patent: April 25, 1989
    Assignee: PPG Industries, Inc.
    Inventors: Charlene A. Falleroni, Chia-Cheng Lin
  • Patent number: 4822389
    Abstract: An optical fiber splice and the method of forming it are described wherein a hollow cylindrical glass member is provided, the member having a bore along the longitudinal axis thereof. Fluid at a pressure in excess of ambient pressure is provided to the bore while the member is subjected to localized heating of the member to the softening point of the glass. In this manner, a bubble is formed within the member bore under the influence of said heating and pressure. For more uniform blubbles, the member may be rotated about its longitudinal axis while it is subjected to said fluid pressure and heating. The splice member is subsquently formed by severing the cylindrical member at the location of the bubbles. Optical fibers may be inserted into the ends of the splicing member and cemented in place.
    Type: Grant
    Filed: August 7, 1987
    Date of Patent: April 18, 1989
    Assignee: Corning Glass Works
    Inventor: George E. Berkey
  • Patent number: 4816053
    Abstract: The use of a flat faceplate comprised of self-polished float glass substantially reduces the cost of a cathode ray tube incorporating a flat tensioned shadow mask while affording a high degree of video image acuity. The float glass flat faceplate does not require polishing and acid etching to provide a high degree of smoothness in its inner and outer surfaces and, in combination with a flat tensioned shadow mask mounted to the flat faceplate, offers a low cost, easily manufactured and assembled color CRT front assembly.
    Type: Grant
    Filed: December 23, 1987
    Date of Patent: March 28, 1989
    Assignee: Zenith Electronics Corporation
    Inventors: Kazimir Palac, deceased, Judith A. Palac, heir, Donald T. Palac, heir, Susan M. Palac, heir
  • Patent number: 4812344
    Abstract: A composite capillary tube structure made of a plurality of glass layers and methods for making same. This composite includes inner and outer layers of fused silica glass separated by an intermediate layer of a glass material having a higher coefficient of thermal expansion than the fused silica glass. The glass material of the intermediate layer also has a glass transition temperature on the same order as that of fused silica, so that the fused silica layers are maintained under compressive forces over a temperature range of up to about 400.degree. C. Preferably, the intermediate layer is a borosilicate or aluminosilicate glass.
    Type: Grant
    Filed: March 28, 1988
    Date of Patent: March 14, 1989
    Assignee: Spectran Corporation
    Inventors: Raymond E. Jaeger, Mohd Aslami
  • Patent number: 4804395
    Abstract: A system is provided for positioning a pair of electrodes on either side of the end portion of an optical fiber extending through a contact, to establish an arc through a cross-aperture in the contact and across the fiber to melt the fiber into a lens, which assures close control of the arc and which prolongs the life of the electrodes. The tips of the electrodes are positioned to lie slightly within opposite ends of the cross-aperture, to avoid establishing an arc between the electrodes which passes around the contact instead of through the cross-aperture. The electrodes are spaced apart by at least about eight times the diameter of the optic fiber, to avoid deposition of vapors from the heated optic fiber onto the electrodes. The cross-aperture extends to the tip of the contact, so the contact can be moved along its axis to a position where the electrodes lie on opposite sides of the fiber end portion.
    Type: Grant
    Filed: January 13, 1987
    Date of Patent: February 14, 1989
    Assignee: ITT Corporation
    Inventors: Kenneth M. Clark, Bruce Coutts
  • Patent number: 4793845
    Abstract: A method for heat sealing an electron gun mount, having a glass stem, into a neck of a cathode-ray tube includes a mount socket for supporting the mount within the neck and a plurality of burners for applying heat to the outside of the neck proximate the stem. The neck softens, thins and then seals to the stem, causing excess neck material that is lower than the stem, known as cullet, to be cut off. Prior to applying heat, a sleeve is disposed around the mount socket within the neck adjacent to the cullet, with a clearance between the sleeve and both the socket and the neck. A vibrating coil is attached to the sleeve for vibrating the sleeve while applying heat to the outside of the neck.
    Type: Grant
    Filed: October 28, 1987
    Date of Patent: December 27, 1988
    Assignee: RCA Licensing Corporation
    Inventors: Emil V. Fitzke, Michael A. Colacello, Jack F. Otto
  • Patent number: 4792348
    Abstract: A method of producing a joint between a beta-alumina electrolyte tube and alpha-alumina flange with a glass bonding agent in a solid annular bead form devoid of additives such as a coupling agent or the like capable of being heated when subjected to microwave energy which comprises utilizing in the heating step a source of microwave energy rather than a gas flame or electrical resistance heat source so as to heat the beta-alumina tube by microwave energy for a time period sufficient to enable the heat generated in the beta-alumina tube to be conducted to glass bead and the alpha-alumina flange and heat the glass bead to a temperature above the glass deformation point, and allowing the tube to cool to solidify the glass bead in intimately penetrating relation to the surfaces of the beta-alumina tube and alpha-alumina flange engaged thereby so that the glass forms a bond between the beta-alumina tube and the alpha-alumina flange characterized by a fusion of the glass within the engaged beta-alumina and alpha-al
    Type: Grant
    Filed: March 2, 1987
    Date of Patent: December 20, 1988
    Assignee: Powerplex Technologies, Inc.
    Inventor: Alina V. Pekarsky
  • Patent number: 4772239
    Abstract: There is disclosed a sealing apparatus for picture tubes which includes a heater unit. This heater unit is located outside an index table, having bulb holders for retaining the glass bulb, during rotation of the table and is moved onto the table during a halt of the rotation. A bulb neck portion is encompassed with the heater unit to be heated by this unit. In this sealing apparatus for picture tubes, it is feasible to rapidly heat process the bulb neck portion without undergoing influences of external disturbances, whereby sealing of high quality can be obtained.
    Type: Grant
    Filed: January 13, 1987
    Date of Patent: September 20, 1988
    Assignee: Hitachi, Ltd.
    Inventor: Koichi Yasuda
  • Patent number: 4765820
    Abstract: A process of producing a ceramic arc tube for a high-pressure metal-vapor discharge lamp, including a translucent ceramic tube, and at least one end cap which closes corresponding at least one end of the ceramic tube and which supports a discharge electrode. A green ceramic tubular body which gives the ceramic tube is formed of a first ceramic material, whereas at least one green end cap which gives the at least one end cap is formed of a second ceramic material of a same kind as the first ceramic material. Each green end cap has a cylindrical portion, and a flange portion which extends radially outwardly from one of opposite axial ends of an outer circumferential surface of the cylindrical portion. The cylindrical portion of each green end cap is inserted and positioned in a corresponding end portion of the green ceramic tubular body, such that the flange portion abuts on an end face of the corresponding end portion of the green ceramic tubular body.
    Type: Grant
    Filed: January 20, 1987
    Date of Patent: August 23, 1988
    Assignee: NGK Insulators Ltd.
    Inventors: Hitoshi Naganawa, Kouichiro Maekawa
  • Patent number: 4755203
    Abstract: A system is described for forming a lens at the end of an optical fiber which extends through a hole in a contact, so the tip of the lens lies at a desired lens position located a predetermined distance rearward of the tip of the contact. The fiber is fixed to the contact at a position wherein the tip of the fiber lies forward of the desired lens position, at about the tip of the contact. The contact is positioned vertically, with the tip of the fiber pointing upwardly, and an arc is passed across the end portion of the fiber, to initially heat and bulge out a location on the fiber spaced rearward of the tip. As the fiber is heated, the tip portion falls into the bulging portion, while the bulging portion moves down, with the heating continued long enough so that the tip of the molten ball of glass lies at the desired lens position.
    Type: Grant
    Filed: January 13, 1987
    Date of Patent: July 5, 1988
    Assignee: ITT Corporation
    Inventor: Bruce Coutts
  • Patent number: 4743283
    Abstract: A system is provided for forming an end of an optical fiber into a lens, which produces a lensed fiber having an especially smooth lens surface and high strength near the intersection of the lens and the rest of the fiber. A lens is formed by establishing a pair of electrodes on opposite sides of a fiber end portion and establishing an arc between the electrode tips for a sufficient current and time to melt the fiber end portion into a lens, with the arc being repeatedly terminated and restarted at a rate of thousands of times per second.
    Type: Grant
    Filed: January 13, 1987
    Date of Patent: May 10, 1988
    Assignee: ITT Corporation
    Inventor: Leslie M. Borsuk
  • Patent number: 4737006
    Abstract: A single mode fiber expanded beam termination is formed by fusion splicing an undoped (pure) silica rod to a single mode fiber. The length of the rod controls the expanded beam diameter, and forms a lens on the free end of the undoped silica rod to collimate an output beam.
    Type: Grant
    Filed: May 13, 1986
    Date of Patent: April 12, 1988
    Assignee: STC PLC
    Inventor: Kevin J. Warbrick
  • Patent number: 4732599
    Abstract: A method of fabricating optical sensing devices for detecting displacement of a part thereof comprising the steps of bonding a multiplicity of optical devices to one surface of a relatively large transparent substrate so that the optical devices are accurately located relative to one another and to the substrate itself, securing to the opposite surface of the substrate and one surface of a transparent optical element-carrying substrate in parallel relationship thereto resilient spacer support means and dividing the entire assembly into individual unit parts each of which comprises an optical device bonded to one substrate unit and coupled to another substrate unit having its own optical element by a divided part of the resilient spacer support means so that the two substrate units are resiliently mounted relative to one another whereby relative movement between the two substrate units produces variations in the optical characteristics of the device which can be sensed.
    Type: Grant
    Filed: August 26, 1985
    Date of Patent: March 22, 1988
    Assignee: Plessey Overseas Limited
    Inventor: Ian Bennion
  • Patent number: 4731040
    Abstract: In a method for manufacturing a cathode ray tube, a bulb is held by a first holding mechanism. An electron gun is inserted and held in a neck portion of the bulb by a second holding mechanism. Then, the neck portion and a stem of the electron gun are welded by a welding unit. The unit includes an annular burner having an inner surface with a plurality of burner holes formed in substantially the entire area along a circumferential direction thereof. The annular burner is constructed by two burner members which can be separated in a radial direction. The burner is positioned by an opening/closing mechanism and a reciprocating mechanism such that the inner peripheral surface of the burner is coaxially located outside the neck portion and opposes the stem of the electron gun. Thereafter, the neck portion is heated by flames injected from the burner holes, and then the burner is reciprocally rotated about its axis through a predetermined angle.
    Type: Grant
    Filed: December 23, 1986
    Date of Patent: March 15, 1988
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Fujio Tominaga, Akihiro Hayashi, Yasunori Minamoto
  • Patent number: 4729778
    Abstract: A unitary disposable chamber and filter unit including a method for making same in which a support surface on the chamber has energy directors such that when ultrasonic energy is applied thereto the energy directors will become molten and bond a filter card to the support surface at spaced locations away from the point of discharge of the fluid through the filter card onto a microscopic slide or other surface for analysis.
    Type: Grant
    Filed: March 2, 1987
    Date of Patent: March 8, 1988
    Assignee: Whale Scientific, Inc.
    Inventor: Daniel V. Griffin
  • Patent number: 4725298
    Abstract: A low pressure mercury vapor discharge lamp forms an electric discharge path by the use of a bulb placed on an end plate and the bulb is formed by a process which results in the connecting outer side surfaces of juxtaposed glass tubes through communication holes formed in the outer side surfaces respectively. The process involves placing the juxtaposed glass tubes so that their outer surfaces are opposed in a contacting state. A portion of each of the glass tubes is heated in order to form a communication hole through the utilization of a burner inserted through an open end into the interior of each of the glass tubes in order to cause fusion of that particular portion in each tube to thereby form the communication hole by wind pressure.
    Type: Grant
    Filed: May 12, 1986
    Date of Patent: February 16, 1988
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Takao Takeda, Hitoshi Yamazaki, Yoshiteru Taniguchi, Norihiko Tanaka, Hiroshi Ito, Minoru Uchida, Jun Imai
  • Patent number: 4713105
    Abstract: In the interest of producing high-strength splice connections between silica-based glass fibers a method of using a tri-particle flow of gases for flame fusion is disclosed. An outer relatively high-velocity flow of oxygen surrounds an intermediate, lower-velocity flow of chlorine or oxygen which in turn surrounds a central flow of H.sub.2, D.sub.2, NH.sub.3, or ND.sub.3.Particularly high strengths are achieved when a central flow of hydrogen or deuterium and an intermediate flow of chlorine are used in such a fashion as to heat fiber ends to be spliced to temperatures of 500 degrees C. and beyond only after these ends have been enveloped by chlorine.
    Type: Grant
    Filed: November 25, 1986
    Date of Patent: December 15, 1987
    Assignee: American Telephone and Telegraph Company, AT&T Bell Laboratories
    Inventors: John T. Krause, Charles R. Kurkjian, Un-Chul Paek
  • Patent number: 4706256
    Abstract: An endbell assembly operatively associated with a laser body includes a metal endbell component sealed to a crystalline endbell component which terminates with a crystalline optical component. The crystalline endbell and crystalline optical component are hermetically sealed without using a frit. This is achieved by polishing and a modified optical contacting technique whereby the optical component and crystalline endbell component are polished to a flatness of about 1/2 wavelength of light, placed in a contacting position and then thermally cycled at a temperature of about 400.degree.-500.degree. C. for about 1 to 10 hours, forming a substantially uniform unitary body. This seal is mechanically strong and minimizes the introduction of contaminants into the endbell assembly. In one embodiment, the crystalline endbell component is metallized and braze-sealed to the metal endbell component. In another embodiment, the two endbell components are hermetically sealed by modified optical contact and thermal cycling.
    Type: Grant
    Filed: June 20, 1986
    Date of Patent: November 10, 1987
    Assignee: Spectra-Physics, Inc.
    Inventors: Shinan-Chur S. Sheng, Jeffrey Kaiser, Ralph R. Jacobs, Alan B. Petersen
  • Patent number: 4705585
    Abstract: In a process for preparing a glass or glass-ceramic to metal seal comprising contacting the glass with the metal and heat-treating the glass and metal under conditions whereby the glass to metal seal is effected and, optionally, the glass is converted to a glass-ceramic, an improvement comprises carrying out the heat-treating step using hot isostatic pressing.
    Type: Grant
    Filed: January 4, 1985
    Date of Patent: November 10, 1987
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Michael D. Kelly, Daniel P. Kramer
  • Patent number: 4687500
    Abstract: The body of an ion-sensitive electrode is formed from a bulb (32) of an ion-selective material that is transparent to infrared radiation. A glass tube (12) made of material that absorbs infrared radiation is inserted into the bulb, and a source (15) of infrared radiation is focused through the bulb (32) onto the end of the tube (12) on which the bulb (32) rests. The resultant heating causes the tube and the bulb to fuse together, and the portion of the bulb outside the tube is then removed to result in an electrode body (FIG. 4).
    Type: Grant
    Filed: February 13, 1986
    Date of Patent: August 18, 1987
    Assignee: Orion Research Inc.
    Inventors: Mark A. Gelo, Moshe J. Hirshberg
  • Patent number: 4685948
    Abstract: A glass optical element is directly press-molded by a method using a noble mold. The mold comprises a base material and a press surface film formed on the base material. The press surface film is an Ir film, or a Ru film, or an alloy film comprising Ir and at least a member selected from the group consisting of Pt, Re, Os, Rh and Ru, or an alloy film comprising Ru and at least a member selected from the group consisting of Pt, Re, Os and Rh.
    Type: Grant
    Filed: January 31, 1986
    Date of Patent: August 11, 1987
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kiyoshi Kuribayashi, Masayuki Sakai, Hideto Monji, Masaki Aoki, Hideyuki Okinaka, Hideo Torii
  • Patent number: 4680075
    Abstract: An integrated circuit package is fabricated by assembling a stack which is comprised of a plurality of thin flat epoxy-glass layers, adhesive layers between the epoxy-glass layers, and a staircase-shaped cavity. This cavity extends from an outer epoxy-glass layer to an internal epoxy-glass layer and goes parallel along a portion of the flat surface of the internal epoxy-glass layer and then penetrates through it. Conductors lie on the internal epoxy-glass layer, including bonding pads on the flat surface portions. After the stack is assembled, a plug is inserted into its cavity. This plug is thermoplastic; and it fits snugly into the cavity and extends over a larger area outside the cavity. While the plug is in the cavity, the stack is laminated at a temperature and pressure which causes the plug to soften and conform to the exact shape of the cavity. This dams the adhesive from flowing onto the bonding pads.
    Type: Grant
    Filed: January 21, 1986
    Date of Patent: July 14, 1987
    Assignee: UNISYS Corporation
    Inventors: Norman E. McNeal, Richard A. Nagy
  • Patent number: 4670972
    Abstract: In the manufacture of a magnetic head, a magnetic layer is sputtered or evaporated on a surface of a first substrate of glass or nonmagnetic material and a nonmagnetic material such as glass is sputtered on one end face of the composite body formed by the substrate and the magnetic layer to form a gap filling layer. A second substrate of the same material and thickness as the first is bonded thereto with the magnetic gap filling being interposed therebetween. Magnetic material is sputtered or evaporated on the bonded substrates until a predetermined thickness is reached to form a second magnetic layer. The magnetic layers are then lapped to reveal an edge of the gap filling layer between adjacent edges of the two magnetic layers.Since the gap filling layer is formed by sputtering method, magnetic gap length can be precisely determined and since the thickness of the magnetic layers determines the track width, a magnetic head having a narrow width can be easily manufactured.
    Type: Grant
    Filed: April 10, 1984
    Date of Patent: June 9, 1987
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventor: Hiroshi Sakakima
  • Patent number: 4661236
    Abstract: An improved electrode for detecting ion concentration and a method of manufacturing such an electrode. The electrode includes concentric glass tubes, including an inner tube which is filled with a filling solution and a larger, outer tube which extends above the level of the filling solution in the inner tube. A metal contact is immersed in the filling solution and extends outside the inner tube through a hermetic seal to allow electrical contact to be made to the filling solution. The inner tube is made of a different glass from the outer tube so that the inner tube will absorb radiation at selected wavelengths which are transmitted by the outer tube. The inner tube is illuminated with radiation of the proper wavelength so that the inner tube melts and collapses around the metal contact to form the hermetic seal. In an alternate embodiment, the electrode has an inner tube which is made of two different types of glass. An apparatus for mechanizing the electrode sealing process is also described.
    Type: Grant
    Filed: October 28, 1983
    Date of Patent: April 28, 1987
    Assignee: Orion Research, Inc.
    Inventors: Mark A. Gelo, Moshe J. Hirshberg, Lionel S. Goldring
  • Patent number: 4650509
    Abstract: A method for making a fluid lamp assembly which includes a fiberglass wick, consisting of approximately 100 individual fibers in a bundle, is inserted in a glass tube, adjusted with its tip a desired distance above opening, and fused in place by heating to 600 degrees Centigrade for 20 minutes. Fusing temperatures of from about 500 to 600 degrees Centigrade may be employed, for times of from about 10 minutes to about one hour, with a longer fusing time employed with lower temperatures. This provides a premanent wick that is not consumed in use of the lamp assembly.
    Type: Grant
    Filed: February 19, 1985
    Date of Patent: March 17, 1987
    Inventor: Willy Vanbragt
  • Patent number: 4648892
    Abstract: A method of forming an optical shield for a laser catheter is disclosed in which a rod of light transmissive material is optically polished and inserted into a tube of similar material and fused and the distal end of the rod is cut and the assembly is optically polished at the distal end.
    Type: Grant
    Filed: March 22, 1985
    Date of Patent: March 10, 1987
    Assignee: Massachusetts Institute of Technology
    Inventors: Carter Kittrell, Gary B. Hayes, Michael S. Feld
  • Patent number: 4643532
    Abstract: Disclosed is an electric field-assisted method for bonding one glass (or other inorganic insulator) body, typically a plate, to a similar body, such that the two bodies are spaced apart. The interior volume of such a composite body is advantageously filled with liquid crystal material, to produce a liguid crystal display cell. The method comprises forming a patterned layer of an appropriate bonding material (e.g., Al, Ge, Si, preferably Si) on a major surface of one of the two insulator bodies, placing a major surface of the second insulator body into contact with the bonding material, heating at least the second body to a bonding temperature (typically in the range 250.degree.-600.degree. C.), and applying a voltage (e.g., 500-1500 volt DC, the second body negative) across the thus formed sandwich.
    Type: Grant
    Filed: June 24, 1985
    Date of Patent: February 17, 1987
    Assignee: AT&T Bell Laboratories
    Inventor: Rafael N. Kleiman
  • Patent number: 4637684
    Abstract: A waveguide for propagating a light beam, a coupler for coupling the light beam to the waveguide, and a thin film layer provided on the bottom surface of the coupler and consisting of a substance having a refractive index lower than the refractive indices of the waveguide and the coupler, the coupler being joined to the waveguide by optical contact with the thin film layer interposed therebetween, together constitute an optical coupler device which is compact and stable in optical coupling characteristic.
    Type: Grant
    Filed: February 14, 1985
    Date of Patent: January 20, 1987
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yasuo Tomita, Shigetaro Ogura, Kazuya Matsumoto
  • Patent number: RE33183
    Abstract: A shielded faceplate for use in an image intensifier having a photocathode which comprises an inner core of glass transparent to light to which the photocathode is sensitive and an outer shielding region of glass which absorbs light to which the photocathode is sensitive. The outer shielding region surrounds and is adjacent to the inner core. The inner core has a transverse dimension which decreases along its length, the transverse dimension being smallest at the photocathode surface. The shielded faceplate is manufactured by arranging in a mold to which glass does not bond a first type of glass transparent to light to which the photocathode is sensitive and a second type of glass which absorbs light to which the photocathode is sensitive, heating the glass members so that they fuse to produce a block having an inner core of the first type of glass and an outer region of the second type of glass and removing the block from the mold.
    Type: Grant
    Filed: March 10, 1988
    Date of Patent: March 20, 1990
    Assignee: English Electric Valve Company, Limited
    Inventors: David G. Holland, Peter B. Banks