By Impinging Plural Liquid Masses Patents (Class 264/11)
  • Patent number: 5556633
    Abstract: A drug delivery ophthalmic insert prepared by forming a water soluble solid polymer into a paste by the addition of a small fixed amount of water, drying the paste and then sectioning the paste into a plurality of rod shaped inserts is provided. The insert is rendered suitable for prolonged and sustained delivery of medication to the eye since it is formed by the addition of a small amount of water and has a surface area less than about 3 mm.sup.2. Specific water soluble solid polymers which may be used include methylcellulose, hydroxyethyl cellulose, alginic acid and combinations thereof as well as mixtures of pilocarpine dispersed in methylcellulose and its combinations.
    Type: Grant
    Filed: April 28, 1993
    Date of Patent: September 17, 1996
    Inventors: Heskel M. Haddad, Spiro P. Loucas
  • Patent number: 5539971
    Abstract: An optical system to be incorporated in endoscopic instrumentation is provided. The optical system includes objective lens, relay lens and eye lens assemblies. The relay lens assembly includes at least one relay lens module for transferring an image between successive image planes. The relay lens module consists of two identical optical components in symmetrical arrangement relative to a center plane of symmetry. Each optical component includes a single curved lens and a doublet lens. In a preferred embodiment, the single and doublet lenses are thin lenses and are fabricated from polymeric materials. An illumination system is also provided and preferably includes a plurality of small diameter polymeric fibers in cooperation with a heat absorbing filter means.
    Type: Grant
    Filed: September 13, 1993
    Date of Patent: July 30, 1996
    Assignee: United States Surgical Corporation
    Inventor: Eugene J. Kelly
  • Patent number: 5541247
    Abstract: An optical resin, of which the refractive index continuously changes in a specific direction, is produced by filling a polymerization container with a mixed solution containing at least one type of polymerizable monomer or polymerizable monomer sol and at least one type of substance whose solubility parameter differs by 7 (cal/cm.sup.3).sup. 1/2 or less and refractive index by 0.001 or more from those of a polymer produced by polymerization of the monomer, and by subjecting the mixture to polymerization reaction by applying heat or energy rays to the container from outside so that the polymerization reaction starts and progresses preferentially from a particular region of the mixture, thus forming a concentration gradient of the substance having different refractive index.The polymerization container may be made of a polymer which swells and dissolves into the mixed solution from an inner wall thereof.
    Type: Grant
    Filed: June 17, 1993
    Date of Patent: July 30, 1996
    Inventor: Yasuhiro Koike
  • Patent number: 5534101
    Abstract: A method of forming an optical element on the surface of a substrate by ejecting a curable light guide forming liquid from a nozzle onto the substrate and curing the curable light guide forming liquid. A waveguide may be formed by moving the nozzle in a linear pattern over the surface of the substrate during ejection of the liquid from the nozzle. Curing the liquid may include exposing the liquid to ultraviolet radiation, and the radiation may be applied to only a small portion of the liquid. A multilayered waveguide may be formed by ejecting a further light guide forming liquid onto the first and curing it. A core and cladding may be formed simultaneously by ejecting core forming liquid from an inner tube and cladding forming liquid from an annulus about the inner tube. The waveguide may be formed in a groove, and a splitter may be formed by branching a second waveguide from a first, or by laying out two parallel waveguides and connecting them.
    Type: Grant
    Filed: March 2, 1994
    Date of Patent: July 9, 1996
    Assignee: Telecommunication Research Laboratories
    Inventors: Barrie P. Keyworth, James N. McMullin
  • Patent number: 5534038
    Abstract: Disclosed are processes for tinting hydrogel materials, such as contact lenses, by dissolving a leuco sulfate ester of a vat dye in an compatible monomer solution, adding an oxidizing initiator to the monomer solution, and oxidizing and polymerizing the monomer solution and dye in the same solution. In one aspect, the oxidation and polymerization are conducted simultaneously whereas in another embodiment, the oxidation of the soluble leuco sulfate ester of a vat dye to the insoluble vat dye and polymerization are conducted sequentially in the same reaction medium.
    Type: Grant
    Filed: May 19, 1995
    Date of Patent: July 9, 1996
    Assignee: Pilkington Barnes Hind, Inc.
    Inventor: John M. Evans
  • Patent number: 5532884
    Abstract: A deflection mirror tower (DMT) of a multiple-disk array, optical storage system includes a plurality of prism members, each having an angular mirror surface, arranged along a vertical axis of the DMT and configured at a predetermined angular orientation to deflect a laser beam to a respective disk surface. The DMT is generally fabricated using a two-level partitioning process. Several prepared glass substrates, i.e., one for each mirror type, are initially sliced into bars having predetermined geometries. A bar from each substrate is sequentially aligned to a master reference and bonded to adjacent bars to form an intermediate bar stack. The stack is then segmented into a plurality of DMT components, each having a plurality of prism members.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: July 2, 1996
    Assignee: Quantum Corporation
    Inventors: Neville K. Lee, Amit Jain, Roy E. Martin
  • Patent number: 5524419
    Abstract: An improved, automated method and apparatus for molding contact lenses generally comprises the steps of: (1) forming anterior and posterior mold cavities in longitudinally spaced relation in first and second webs of material, respectively; (2) dispensing a liquid, curable, lens material (e.g., monomer) in each anterior cavity of the first web; (3) aligning and bringing the posterior and anterior cavities into sequential, mating, centered engagement with each other; (4) curing the lens material captured between respective posterior and anterior molds; and (5) separating the webs to release the lenses cast therebetween. In an advantageous embodiment of the invention, the mold cavities are vacuum-formed in the respective webs, and packaging receptacles are formed in one or both of the webs used to mold the lenses.
    Type: Grant
    Filed: February 2, 1995
    Date of Patent: June 11, 1996
    Assignee: Bausch & Lomb Incorporated
    Inventor: John H. Shannon
  • Patent number: 5526454
    Abstract: A method is proposed for producing passive and/or active optical polymer components having integrated fibre-chip coupling by means of casting technology. For this purpose, the master structure is produced in common on a silicon substrate both for accommodating an optical waveguide and a fibre-guiding structure anisotropically etched into the substrate [sic], this master structure is cast by electroplating and the negative mould thus produced is used to produce daughter structures identical to the master structure, the anisotropically etched V-shaped positioning trenches being filled with polymer materials, so that a planar surface is produced, the planar surface is coated with a photoresist or another structurable polymer, trench-shaped openings which subsequently produce the optical waveguides are structured into the polymer coating, and the trench structures are opened by means of laser ablation.
    Type: Grant
    Filed: October 11, 1994
    Date of Patent: June 11, 1996
    Assignee: Robert Bosch GmbH
    Inventor: Klaus-Michael Mayer
  • Patent number: 5519069
    Abstract: An interpenetrating network copolymer, method of producing same, and method of producing optical lens blanks and finished lenses therefrom. The method broadly involves the preparation of first and second mixtures of polymerizable vinyl monomers and interrupting the polymerization of the first mixture at a relative viscosity of from about 1.05 to about 10 by admixing the partially polymerized first mixture with the second mixture to create a casting solution and thereafter, when desired, polymerizing molded casting solution in heat to create a solid lens material.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: May 21, 1996
    Assignee: Pilkington Barnes Hind, Inc.
    Inventors: William J. Burke, Lisa A. Folk, Donald J. Ratkowski
  • Patent number: 5516467
    Abstract: A process for producing a tinted contact lens, which includes dissolving a soluble vat dye in a monomer capable of dissolving the soluble vat dye therein, mixing the monomer having the soluble vat dye dissolved therein and other monomers, polymerizing the monomer mixture and processing the resulting polymer into a shape of a contact lens.
    Type: Grant
    Filed: July 15, 1994
    Date of Patent: May 14, 1996
    Assignee: Menicon Co., Ltd.
    Inventors: Kazuharu Niwa, Yoshitaka Taniyama, Noriko Iwata, Yasuhiro Yokoyama
  • Patent number: 5508317
    Abstract: The invention relates to a novel process for the manufacture of mouldings, especially contact lenses, in which a soluble prepolymer comprising crosslinkable groups is crosslinked in solution, and also to mouldings, especially contact lenses, obtainable in accordance with that process. The present invention relates also to novel prepolymers that can be used in the process according to the invention, especially derivatives of a polyvinyl alcohol having a molecular weight of at least about 2000 that, based on the number of hydroxy groups of the polyvinyl alcohol, comprise from approximately 0.5 to approximately 80% of units of formula I ##STR1## wherein R is lower alkylene having up to 8 carbon atoms,R.sup.1 is hydrogen or lower alkyl andR.sup.
    Type: Grant
    Filed: August 4, 1994
    Date of Patent: April 16, 1996
    Assignee: Ciba-Geigy Corporation
    Inventor: Beat Muller
  • Patent number: 5505884
    Abstract: An interpenetrating network copolymer, method of producing same, and method of producing optical lens blanks and finished lenses therefrom. The method broadly involves the preparation of first and second mixtures of polymerizable vinyl monomers and interrupting the polymerization of the first mixture at a relative viscosity of from about 1.05 to about 10 by admixing the partially polymerized first mixture with the second mixture to create a casting solution and thereafter, when desired, polymerizing molded casting solution in heat to create a solid lens material.
    Type: Grant
    Filed: May 15, 1995
    Date of Patent: April 9, 1996
    Assignee: Pilkington Barnes Hind Inc.
    Inventors: William J. Burke, Lisa A. Folk, Donald J. Ratkowski
  • Patent number: 5500161
    Abstract: A method for the preparation of microparticles, and the product thereof, that includes dispersing a substantially water insoluble non-ionic or ionic polymer in an aqueous solution in which the substance to be delivered is also dissolved, dispersed or suspended, and then coagulating the polymer together with the substance by impact forces to form a microparticle. In an alternative embodiment, the microparticle is formed by coagulation of an aqueous polymeric dispersion through the use of electrolytes, pH changes, organic solvents in low concentrations (the minimal amount necessary to break up the dispersion), or temperature changes to form polymer matrices encapsulating biological materials.
    Type: Grant
    Filed: September 21, 1993
    Date of Patent: March 19, 1996
    Assignee: Massachusetts Institute of Technology and Virus Research Institute
    Inventors: Alexander K. Andrianov, Robert S. Langer
  • Patent number: 5493623
    Abstract: A piezoelectric fiber optic phase modulator having a mount at a nodal point of the vibratory system of the modulator. The modulator is excited with an electric field applied in a direction parallel to the axis of the modulator or perpendicular to the radial direction of movement of the modulator. In contrast to the mere hollow cylinder modulator of the related art, the modulator of this invention has a web or center structure integral with the inside surface of the cylinder. The modulator here has a rugged mount, low absorption vibration and negligible harmonics at the mount for efficient and high Q functioning, and has rugged electrical connections for dependable operation.
    Type: Grant
    Filed: June 28, 1994
    Date of Patent: February 20, 1996
    Assignee: Honeywell Inc.
    Inventors: Richard H. Frische, Dick Ang
  • Patent number: 5482773
    Abstract: Polymeric fibrids containing embedded activated carbon are useful as adsorbents.
    Type: Grant
    Filed: March 9, 1995
    Date of Patent: January 9, 1996
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Thomas I. Bair
  • Patent number: 5481633
    Abstract: A method of producing passive and/or active optical polymer components (10) having vertical coupling structures (45), wherein at least one structure (22) for receiving a light waveguide (40; 46), and at least two fiber guide structures (14) and at least two adjusting structures (36) are produced on a substrate plate (32) and on a lid plate (34) such that both the plate and the lid plate possess fiber guide structures (14) with which the adjusting structures (36) located opposite in the lid plate or substrate, plate respectively are associated after assembly, and wherein the light waveguide structures (22) of the substrate plate (32) and the lid plate (34) which connect the fiber guide structures (14) extend parallel to each other in at least one region (45) such that the optical fields in the respective light waveguides (40) can be coupled with one another.
    Type: Grant
    Filed: August 1, 1994
    Date of Patent: January 2, 1996
    Assignee: Robert Bosch GmbH
    Inventor: Klaus-Michael Mayer
  • Patent number: 5454055
    Abstract: A method for making a cover for an integrated optical circuit, a cover for an integrated optical circuit, and an integrated optical circuit made with this cover are proposed. The method serves to minimize the effort and expense in integrating optical components in fiberoptical systems. An optical element 29 is placed in a molding die (10) with adjusting elements (13) that adjust the optical component (29) in its position, and a curable liquid is cast all around the optical component (29), and after it solidifies, this liquid forms the cover (25).
    Type: Grant
    Filed: May 10, 1994
    Date of Patent: September 26, 1995
    Assignee: Robert Bosch GmbH
    Inventors: Hans Kragl, Wolf-Henning Rech, Hergo H. Wehmann
  • Patent number: 5435945
    Abstract: A method and apparatus are provided for generating seed particles. In one technique, a spray of water droplets is discharged to intersect a spray of liquid sulphur droplets to effect contact between some of the sulphur droplets and water droplets. The cooling sulphur droplets form seed particles. In another technique, water is sprayed into dispersed sulphur granules moving through a processing region. Subsequently, as the water is evaporating from the granules, liquid sulphur is sprayed onto the granules. Some of the liquid sulphur droplets impinge upon the water film-coated granules and solidify to form new seed particles which become detached from the granules. In another technique, a stream of liquid sulphur is discharged under pressure into a receiving region. A plurality of jets of atomizing fluid are injected into the stream to form a spreading spray of liquid sulphur droplets which solidify into seed particles.
    Type: Grant
    Filed: May 29, 1992
    Date of Patent: July 25, 1995
    Assignee: Procor Sulphur Services, Inc.
    Inventors: Sergio A. De Paoli, Jamsheed P. Irani, Lloyd W. Ogle, Jerome P. Gillis, Shaun E. Molloy, Charles R. Kulhawy
  • Patent number: 5421848
    Abstract: The invention presents a method for the fabrication or production of three-dimensional lenses with a variable refractive index by wrapping a material with a given refractive index. It is preferred, that this material has the shape of a thread, which might be cylindrical. The preferred shape of the lens to be produced is spherical or semi-spherical, which can be achieved by an appropiate wrapping process or by cutting the spherical shape. By the inventive method it is possible to produce the said lenses with a smooth varying of the refractive index. It is preferred to use the produced lenses as part of a microwave antenna system.
    Type: Grant
    Filed: June 28, 1993
    Date of Patent: June 6, 1995
    Assignee: Thomson Consumer Electronics, S.A.
    Inventors: Gerhard Maier, David Harrison, Masahiro Fujimoto
  • Patent number: 5394498
    Abstract: A fiber optical array with precision fiber and positioning and a process for manufacturing such an array. The position of the ends of the optical fibers depends upon placement within a target that has been lithographed using highly precise lithography similar to that used in VLSI integrated circuits. The placement of an end with its core within its target is performed with the aid of microscopes and micro-manipulators. Once an end is in the proper location, ultraviolet curable adhesive is used to permanently fix its position precisely. Arrays having positional precision to within 1 micrometer are achievable by this invention.
    Type: Grant
    Filed: November 5, 1993
    Date of Patent: February 28, 1995
    Assignee: AT&T Corp.
    Inventors: Stephen J. Hinterlong, Robert A. Novotny, Jose M. Sasian-Alvarado
  • Patent number: 5389708
    Abstract: An internal release agent comprises a sulfur-containing acid phosphoric esters selected from the group consisting of thiophosphoric acid esters and dithiophosphoric acid esters of the formula, ##STR1## where X and Y are independently selected from the group consisting of an oxygen atom and a sulfur atom, at least one of X and Y is a sulfur atom, and R.sub.1 and R.sub.2 are independently alkyl groups.
    Type: Grant
    Filed: January 27, 1993
    Date of Patent: February 14, 1995
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Masahiko Kusumoto, Hiroyuki Yamashita, Teruyuki Nagata
  • Patent number: 5380473
    Abstract: The present invention is a unique process and apparatus for making a new matrix material called a shearform matrix which results in transformation of the morphology of a feedstock. The process is characterized by increasing the temperature of a nonsolubilized feedstock carrier to a point where it will undergo internal flow, followed by ejecting a stream of the feedstock and then subjecting it to disruptive fluid shear force which separates it into separate parts or masses which have a transformed morphology. The shearform matrix may include other ingredients such as oleaginous material and actives.
    Type: Grant
    Filed: October 23, 1992
    Date of Patent: January 10, 1995
    Assignee: Fuisz Technologies Ltd.
    Inventors: B. Arlie Bogue, Richard C. Fuisz, Peter G. Hiscocks
  • Patent number: 5376313
    Abstract: A plastic assay cuvette having the desired optical properties for the analysis of a test sample or reaction mixture thereof, and a method for making such plastic assay cuvette, are described. The optical properties of the plastic assay cuvette are substantially the same as the optical properties of glass wherein low birefringence throughout the optical read region thereof is provided. When used for the analysis of a test sample or reaction mixture thereof, such as in fluorescence polarization assays and absorbance assays, the plastic assay cuvette provides accurate and reproducible results while, at the same time, provides a low-cost disposable assay cuvette which can be used in place of conventional glass assay cuvettes.
    Type: Grant
    Filed: July 20, 1992
    Date of Patent: December 27, 1994
    Assignee: Abbott Laboratories
    Inventors: William J. Kanewske, III, James A. Vaught, Richard L. Vickstrom, Frederic L. Clark, Gilbert Clift, Kendall B. Hendrick, Peter A. Lagocki, Richard R. Martin, James E. Mitchell, Larry E. Moore, Charles D. Pennington, Edna S. Walker, B. Jane Smith, Apparao Tayi, David A. Yost
  • Patent number: 5367593
    Abstract: An optical/electrical connector including a molded base having a well and a plurality of grooves extending from the well to a first outer edge of the base and alignment guides associated with the grooves at the first outer edge. The base further having external electrical connections with first ends exposed and positioned in the well and second ends extending outwardly beyond a second outer edge of the base. An array of photonic components is positioned in the well and each aligned with a separate groove. The array is electrically coupled to the exposed first ends of the external electrical connections of the base. The grooves are filled with a plastic material to form optical waveguides from the optical ports to the first outer edge.
    Type: Grant
    Filed: September 3, 1993
    Date of Patent: November 22, 1994
    Assignee: Motorola, Inc.
    Inventors: Michael S. Lebby, Christopher K. Y. Chun, Shun-Meen Kuo, Davis H. Hartman
  • Patent number: 5367596
    Abstract: A method of making an optical scanner is disclosed that includes light transmitting and receiving optical fibers to illuminate and scan an image to be copied, transmitted or stored.
    Type: Grant
    Filed: July 14, 1993
    Date of Patent: November 22, 1994
    Inventor: Vincent Chow
  • Patent number: 5354517
    Abstract: A process for the preparation of substrate for optical disk characterized in that pellets of 4-methyl-1-pentene polymer or copolymer having a melt flow rate (MFR), as measured according to ASTM D1238 under a load of 5 kg and at a temperature of 260.degree. C., of 240-1200 g/10 min, and a melting point as measured by means of DSC of 234.degree.-240.degree. C., are injection molded into the substrate under the conditions where a temperature of at least part of a cylinder is 320.degree.-370.degree. C. and a mold temperature is not more than 55.degree. C.
    Type: Grant
    Filed: April 27, 1993
    Date of Patent: October 11, 1994
    Assignees: Mitsui Petrochemical Industries, Ltd., Sumitomo Heavy Industries, Ltd.
    Inventors: Kazuyuki Yamasaki, Takehiko Kitamura
  • Patent number: 5343544
    Abstract: An integrated optical coupler comprises a substrate with fiber-aligning grooves and waveguiding channels and a covering with complementary grooves and, optionally, channels. These couplers can be made from reproducible masters and electroplated molds made from those masters.
    Type: Grant
    Filed: July 2, 1993
    Date of Patent: August 30, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Gary T. Boyd, Tzu-Chen Lee, Bruce A. Sventek, Elisa M. Cross, Laura A. Weller-Brophy
  • Patent number: 5333223
    Abstract: An injection molded plastic fiber alignment ferrule is provided with a polishing pedestal. The ferrule has an opening therethrough for receiving the end of a fiber, which extends beyond the pedestal. The fiber is cleaved and the end is severed. The ferrule is polished to remove the pedestal, resulting is a smoothly polished end surface.
    Type: Grant
    Filed: April 13, 1993
    Date of Patent: July 26, 1994
    Assignee: Methode Electronics, Inc.
    Inventors: Philip W. Schofield, James W. McGinley
  • Patent number: 5322650
    Abstract: A molten fiber material flow is rendered into a plurality of fibers by means of a liquid jet such as water jet in place of a pressurized gas or air. The flow moves downwardly in a vertical direction while the water jet cuts it at an inclined angle. The water jet is formed by a single nozzle or plural nozzles of a flat-jet or round-jet type.
    Type: Grant
    Filed: March 13, 1992
    Date of Patent: June 21, 1994
    Assignee: Toshiba Monofrax Co., Ltd.
    Inventors: Shigeo Endo, Haruo Kawashima, Kimio Hirata, Yasuo Misu, Akira Itoh
  • Patent number: 5322648
    Abstract: A method is provided for fabricating a shaped article from aqueous collagen-containing materials. A dispersion containing collagen and a surfactant is cast upon a mold of thermoplastic material and dried by a ramped drying profile under controlled conditions of relative humidity and temperature. The controlled drying allows for initial renaturation of the collagen dispersion then drying at high humidity to form a product with minimal residual stress.
    Type: Grant
    Filed: August 26, 1991
    Date of Patent: June 21, 1994
    Assignee: Vitaphore Corporation
    Inventor: Gregory S. Dapper
  • Patent number: 5320509
    Abstract: There is disclosed a molten metal-atomizing apparatus which prevents the formation of a blocking in an ultra-high pressure atomizing of molten metal, and can produce finer metal powder. A vertical distance from the position of occurrence of a primary atomizing effect to a lower end of a jet injection port of a nozzle is 40% to 85% of a vertical distance from the lower end of the injection port to the position of intersection of jets.
    Type: Grant
    Filed: September 29, 1992
    Date of Patent: June 14, 1994
    Assignee: Hitachi Metals, Ltd.
    Inventor: Teruyasu Oka
  • Patent number: 5316700
    Abstract: Process and apparatus for molding the front and rear surfaces of a contact lens in one step is disclosed. Two mold halves matable to form a contact-lens-shaped cavity and a cavity for excess lens forming material surrounding the cavity are provided. The improvement comprises providing the cavity for excess lens forming material with at least two openings and producing differential gas pressure across the openings to remove excess lens forming material.
    Type: Grant
    Filed: November 2, 1992
    Date of Patent: May 31, 1994
    Assignee: Wesley-Jessen Corporation
    Inventors: Paul J. Soye, Samuel Loshaek
  • Patent number: 5317657
    Abstract: A waveguide structure is directly extruded onto a surface from a nozzle placed a predetermined distance above the surface and which is moved relative to the surface, preferably by means of a translation table. The predetermined distance is preferably maintained constant and the speed of relative motion regulated to achieve a uniform degree of molecular orientation within the extruded material, thus maintaining a sufficiently uniform refractive index along the axis of the waveguide. Partitions within the nozzle allow the formation of a layered waveguide or the simultaneous formation of concentric cladding or protective layers. The waveguides are advantageously formed as a curtain which is later patterned, by direct writing on the surface or between chips mounted on an electronic module.
    Type: Grant
    Filed: July 30, 1992
    Date of Patent: May 31, 1994
    Assignee: International Business Machines Corporation
    Inventors: Antonio R. Gallo, James J. McDonough, Gordon J. Robbins, Robert R. Shaw
  • Patent number: 5281370
    Abstract: A method of making a solid filter material which filters a predetermined wavelength band from a broader spectrum of radiation includes creating a colloidal structure composed of particles dispersed within a medium, and introducing a solvent thereto. Thereafter, the solvent is evaporated and the remaining structure solidifies into a solid crystalline array. Another embodiment of the method includes electrophoretically attracting the particles in a medium to form an ordered array. The particles can also be fused together by polymerization using one of several methods which are provided. Additionally, one aspect of the invention involves coating the particles with an electrostatically-charged material to facilitate inter-particle interactions.
    Type: Grant
    Filed: August 22, 1990
    Date of Patent: January 25, 1994
    Assignee: University of Pittsburgh of the Commonwealth System of Higher Education
    Inventors: Sanford A. Asher, Sesh Jagannathan
  • Patent number: 5275637
    Abstract: A method of pressing flowing-down molten glass from the opposite sides thereof by a pair of shaping mold members to thereby manufacture a glass optical part having surfaces corresponding to the shaping surfaces of the mold members is characterized in that a groove forming ring is provided around the shaping surface of at least one of the shaping mold members, a groove is formed in the molten glass by the groove forming ring during the press and the flowing-down molten glass is cut above that portion thereof which is being pressed, thereby obtaining a glass molded article having an ear protruding outwardly of the groove relative to an optical part body portion.
    Type: Grant
    Filed: January 25, 1991
    Date of Patent: January 4, 1994
    Assignee: Canon Kabushiki Kaisha
    Inventors: Bunryo Sato, Nobukazu Yogo, Hiroe Tanaka, Takeshi Nomura, Hiroyuki Kubo
  • Patent number: 5269977
    Abstract: A light reflective body useful for a panel-type lighting or ornamental member with edge lighting is formed of a transparent inorganic or organic casted glass member, such as a transparent plate of polymethyl methacrylate which has foam layers unevenly dispersed in the inner or outer face of the member or plate. The organic casted glass member of the light reflective body is manufactured by (a) gelling organic glass beads and an organic glass monomer or prepolymer or a mixture of them and thereafter casting them with an organic glass monomer or prepolymer or a mixture of them in a framework; (b) spreading the foaming material on a ready-made organic glass plate and hardening it; or (c) tightly attaching an organic glass foam plate manufactured in advance to an organic glass plate. In accordance with the method (a) or (b), the foam layer is completely integral with the organic casted glass product. Method (c) can also be applied to an inorganic casted glass member.
    Type: Grant
    Filed: January 11, 1991
    Date of Patent: December 14, 1993
    Assignee: Nissen Kagakukogyo K.K.
    Inventors: Sumio Nakahashi, Erika Hagiyama, Takao Iino, Fukuichi Morizane
  • Patent number: 5271083
    Abstract: A molded optical waveguide having electrical conductors molded therein for contacting an optical device mounted at one end of the waveguide and providing external electrical access to the optical device at exposed sides of the waveguide. The waveguide and assembled optical device is mounted on a printed circuit board or the like and contacted by lead wires.
    Type: Grant
    Filed: July 27, 1992
    Date of Patent: December 14, 1993
    Assignee: Motorola, Inc.
    Inventors: Michael S. Lebby, Davis H. Hartman, Shun-Meen Kuo, Christopher K. Y. Chun
  • Patent number: 5266099
    Abstract: Metal and metal alloy preforms having closed cell, spherical porosity are spray formed at high deposition rates by introducing blowing agents into the thixotropic semisolid deposition layer, within which gas formed in thermal decomposition reactions are trapped. Density reductions of nearly 30% were generated in a phosphor bronze matrix, using barium carbonate as the blowing agent. Hollow glass particles were produced in the same matrix alloy by injection of microsphere precursor frit containing sulfur. A simple Newtonian heat transfer model of agent heating in the spray predicts agent/matrix compatibility. Along with modest improvements in damping capacity, tensile and compressive properties were found to be equal or superior to powder metallurgy product at the same porosity levels.
    Type: Grant
    Filed: August 11, 1992
    Date of Patent: November 30, 1993
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Paul Kelley
  • Patent number: 5260002
    Abstract: The present invention relates to a method and apparatus for producing uniform polymeric spheres with controllable permeability. This invention may be useful for encapsulating living cells or tissue or chemicals or medicines in uniform polymeric spheres. In particular, this invention relates to polymeric microspheres made from polycation and polyanion polymer solutions. An apparatus includes airtight housing 1 having top 3 and bottom 25 chambers. Top chamber 3 includes pressure regulator means 5, stationary polyanion reservoir tank 7, polycation reservoir tank 27, and feed line 9 to adjustable tank 11. Tank 11 is associated with oscillator 13, nozzle 14 and capacitance means 19. Nozzle 14 and oscillator 3 cooperate to form polyanion droplets. In the bottom chamber 25 annular nozzle 50 is used to form an annular jet of polycation solution. The droplets and polycation jet are mixed at minimal impact velocities to form uniform polymeric sphere.
    Type: Grant
    Filed: December 23, 1991
    Date of Patent: November 9, 1993
    Assignee: Vanderbilt University
    Inventor: Taylor G. Wang
  • Patent number: 5259998
    Abstract: A method for making a biosoluble collagen or gelatin ophthalmic shield, which optionally contains a pharmaceutically active agent, by casting collagen or gelatin in a mold; chilling the mold with the collagen or gelatin shield until the shield is strong enough to allow the mold to be opened without deforming the shield in one half of the mold; drying the collagen or gelatin shield while it is still in the mold; and then cross-linking the collagen or gelatin shield to achieve the desired solubility. The resulting shield can be worn comfortably in the eye and leaves no observable material after complete dissolution and drug release.
    Type: Grant
    Filed: October 4, 1991
    Date of Patent: November 9, 1993
    Assignee: Chiron Ophthalmics, Inc.
    Inventors: Cary Reich, Jean Toner-Webb
  • Patent number: 5249245
    Abstract: A method for interconnecting a waveguide (102), an optoelectronic component 101, and an electronic component (103). A first surface (108) is formed from a portion of cladding region(107) and a second surface (109) is formed from a portion of core region and a portion of the cladding region. A substrate (104) having electrical tracings (212', 213') is attached to the waveguide (102) so that an electronic component receiving area (111') and an optoelectronic component area (112') are attached to the first and second surface (108, 109) of the waveguide (102) respectively. An electronic component (103) and an optoelectronic component (101) are mounted to the electronic component receiving area (111') and the optoelectronic receiving area (112') respectively.
    Type: Grant
    Filed: August 31, 1992
    Date of Patent: September 28, 1993
    Assignee: Motorola, Inc.
    Inventors: Michael S. Lebby, Thomas H. Blair
  • Patent number: 5244984
    Abstract: A polymer powder is produced by separately melting two or more of oligomers and monomers which are reactive with each other, spraying a mixture of the oligomers and the monomers, while continuously mixing them with each other, the mixture being solid at a normal temperature, having a melt viscosity of 1,000 cps or below at 300 degree C., then cooling the sprayed mixture to obtain a powder thereof, and solid phase-polymerizing it to obtain the polymer powder. It is useful for powder coating.
    Type: Grant
    Filed: March 22, 1991
    Date of Patent: September 14, 1993
    Assignee: Daicel Huls Ltd.
    Inventor: Hajime Suzuki
  • Patent number: 5244605
    Abstract: In a process for producing a halogenated polycarbonate molded article from a powder or pellets of a halogenated polycarbonate resin or composition thereof by means of injection molding using an injection molding machine, the improvement wherein the injection molding machine comprises a cylinder whose inner circumferential wall being made of a corrosion-resistant and abrasion-resistant alloy comprising alloy component (1), (2), or (3) given below, and a screw part made of a steel having a metal coating formed by hard chromium plating or hard nickel plating or made of SUS420, SUS440, Hastelloy C, or a steel comprising alloy component (4) given below:______________________________________ Alloy component (1): C: 0.5-2 wt % Si: 1-5 wt % B: 0.5-5 wt % Ni: 10-25 wt % Cr: 20-35 wt % W: 10-25 wt % Cu: 0.5 -5 wt % Remainder: Co and unavoidable impurities, Alloy component (2): Si: 0.2-4 wt % Mn: 0.
    Type: Grant
    Filed: June 12, 1991
    Date of Patent: September 14, 1993
    Assignee: Mitsubishi Gas Chemical Co., Inc.
    Inventors: Toshikazu Umemura, Toshiaki Asoh
  • Patent number: 5238388
    Abstract: An apparatus for molding a soft ophthalmic lens, having a male and female portion, one having around the periphery of the optical surface a knife edge and one containing a rim bushing peripherally exterior to the knife edge. The two portions are mated so that the knife edge deformably penetrates the other portion. Excess material is expelled from the mold cavity and separated from the lens by a region of prepolymer discontinuity defined by the rim bushing contact area. The mold portion containing the rim bushing is produced by using a cylindrical insert and an annular sleeve machined to have the rim bushing on the surface of one end.
    Type: Grant
    Filed: December 6, 1991
    Date of Patent: August 24, 1993
    Assignee: Johnson & Johnson Vision Products, Inc.
    Inventor: James T. Tsai
  • Patent number: 5239603
    Abstract: An integrally-molded ceramic cylindrical alignment sleeve is composed of a cylindrical sleeve body and at least three convex portions located on the inner surface of the sleeve body, each of the convex portions extending from one end to the other in the longitudinal direction of the sleeve body, with the upper surface of each of the convex portions being formed in the shape of a reverse arc and the section where each of the convex portions connects to the inner surface of the sleeve body being in the shape of a continuous R. A method of producing this integrally-molded ceramic cylindrical alignment sleeve is disclosed.
    Type: Grant
    Filed: June 11, 1992
    Date of Patent: August 24, 1993
    Assignees: Kyocera Corporation, Sanwa Denki Kogyo Co., Ltd.
    Inventors: Hideto Sonoda, Toshiyuki Matsumoto
  • Patent number: 5229128
    Abstract: A drug delivery ophthalmic insert prepared by forming a water soluble solid polymer into a paste by the addition of a small fixed amount of water, drying the paste and then sectioning the paste into a plurality of rod shaped inserts is provided. The insert is rendered suitable for prolonged and sustained delivery of medication to the eye since it is formed by the addition of a small amount of water and has a surface area less than about 3 mm.sup.2. Specific water soluble solid polymers which may be used include methylcellulose, hydroxyethyl cellulose, alginic acid and combinations thereof as well as mixtures of pilocarpine dispersed in methylcellulose and its combinations.
    Type: Grant
    Filed: October 1, 1991
    Date of Patent: July 20, 1993
    Inventors: Heskel M. Haddad, Spiro P. Loucas
  • Patent number: 5213825
    Abstract: A plastic lens molding apparatus. A first mold, having a concave optical surface, and a second mold, having a convex optical surface, are arranged so that the optical surfaces are opposed to each other, each of the optical surfaces having an apex. An adhesive tape is applied over both the first and second molds to form a cavity between the molds. A plastic material is injected into the cavity and is then set. A plane including a tangent at an apex of the optical surface of at least one of both the first and second molds is inclined at a predetermined angle to an optical axis of the lens.
    Type: Grant
    Filed: August 29, 1991
    Date of Patent: May 25, 1993
    Assignee: Seiko Epson Corporation
    Inventors: Toshihiko Shimizu, Osamu Aruga
  • Patent number: 5193133
    Abstract: An injection molded plastic fiber alignment ferrule is provided with a polishing pedestal. The ferrule has an opening therethrough for receiving the end of a fiber, which extends beyond the pedestal. The fiber is cleaved and the end is severed. The ferrule is polished to remove the pedestal, resulting in a smoothly polished end surface.
    Type: Grant
    Filed: January 21, 1992
    Date of Patent: March 9, 1993
    Assignee: Methode Electronics, Inc.
    Inventors: Philip W. Schofield, Paul R. Stonikas, James W. McGinley
  • Patent number: RE34448
    Abstract: An intraocular lens comprising a deformable optic and first and second fixation members. Each of the fixation members has a proximal end portion. First and second elongated anchors are coupled to the proximal end portions of the fixation members, respectively, and the anchors and the proximal end portions within peripheral regions of the optic so that the anchors can assist in attaching the fixation members to the optic. The anchors are spaced apart so that the deformable optic can be folded to facilitate insertion of the optic through a relatively small incision into the eye.
    Type: Grant
    Filed: September 19, 1990
    Date of Patent: November 16, 1993
    Assignee: Allergan, Inc.
    Inventors: F. Richard Christ, Stanley L. Van Gent, Lyle E. Paul
  • Patent number: RE34506
    Abstract: The invention discloses a simplified four step process for making an optical disc master or alternatively a WORM disc by first making or obtaining a transparent polymer disc with a tracking groove of desired geometry molded therein, then spin coating an optically active lamina on the grooved side of the disc, then recording data on said polymer disc with groove controlled and tracked laser means by ablating active lamina, forming pits, the shape of which is determined by the groove geometry and finally depositing a conductive and reflective lamina over the pitted active lamina. To change the OD master to an OD WORM, a protective cover is added to the electrically conductive and optically reflective lamina.
    Type: Grant
    Filed: October 22, 1992
    Date of Patent: January 11, 1994
    Assignee: Del Mar Avionics
    Inventors: Robert B. Dobbin, David G. Loeppky, James R. Norton, Bruce E. Del Mar