Patents Examined by David Klein
  • Patent number: 4193797
    Abstract: A process for forming a photoresist which comprises:(1) applying to a surface the surface of a solid unexposed photosensitive layer of thermoplastic photosoluble or photodesensitizable material, the other surface being adhered to a film support, then in either order(2) exposing the layer, and(3) stripping the support, and then(4) washing away the exposed areas of the layer.The surface bearing the resist can be etched, plated, or treated in other ways.
    Type: Grant
    Filed: November 22, 1972
    Date of Patent: March 18, 1980
    Assignee: E. I. DuPont de Nemours and Company
    Inventors: Abraham B. Cohen, Robert B. Heiart
  • Patent number: 4153462
    Abstract: The present invention is directed to a method for forming the crystals of a photographic silver halide emulsion which comprises crystallizing silver halide grains from a solution of a water-soluble complex of silver halide complexed with excess halide ions. The crystals may be sensitized before the binder is added.
    Type: Grant
    Filed: August 14, 1975
    Date of Patent: May 8, 1979
    Assignee: Polaroid Corporation
    Inventors: Arthur M. Gerber, Vivian K. Walworth
  • Patent number: 4149926
    Abstract: Disclosed herein is an apparatus for assembling and bonding a pre-cured tread strip to the carcass of a new tire or the casing of a tire to be retreaded wherein the tread is preheated and that heat is utilized to assist in the final bonding of the tread to the carcass. A heated drum is utilized, with the tread being wrapped around the periphery thereof and brought to an elevated temperature following which a roller type transfer mechanism is used to transfer the tread to a tire support and assembly apparatus where a stitcher and locking and sealing ring temporarily secure the tread to the periphery of the carcass with previously applied cushion gum material sandwiched therebetween. A shifting mechanism is then activated to transfer the tire and the tire support and assembly apparatus to a curing chamber where the tread is engaged by a heated belt which, together with the residual heat in the tread, serves to complete bonding of the tread to the carcass.
    Type: Grant
    Filed: April 1, 1977
    Date of Patent: April 17, 1979
    Assignee: Victor E. Buehrle
    Inventor: Don A. Taylor
  • Patent number: 4124434
    Abstract: Apparatus for lining by lamination air-permeable containers with thermoplastic film involving a deep drawing operation. The containers are held in deep drawing molds formed in a rotating table and the film blanks are formed from a film web onto individual holding means secured to another rotating table, the driving means for the tables being synchronized such that the film blanks are timely presented for the deep drawing operation following heating. Each holding means includes a metallic frame having a plurality of closely spaced pins for penetrating a film blank around the area to be deep drawn, the pins causing the area to be relieved of stresses during heating and shrinkage and hence troublesome wrinkles in the blanks prior to being deep drawn. Surprisingly, the pins do not cause tearing of even very thin film, because of the head conductor property of the pins and its effect on the arcing of the film blank in the vicinity of the pins as the blank shrinks.
    Type: Grant
    Filed: October 26, 1976
    Date of Patent: November 7, 1978
    Assignee: Maschinenfabrik Rissen GmbH
    Inventors: Fritz Wommelsdorf, Werner Schmidt
  • Patent number: 4123280
    Abstract: There are disclosed a method and an apparatus for the production of photographic materials by vacuum deposition of silver halides on a continuously moving substrate. The silver halides are heated in a crucible placed within a vacuum chamber by radiant heating means disposed outside the chamber and the crucible is so shaped and positioned so close to the continuously moving substrate that a stream of silver halide vapour impinges perpendicularly on the substrate and silver halide is deposited on the substrate at a rate of 200 to 2000 A/sec. The substrate is usually primed with a layer of a material which enhances deposition of the silver halide thereon. The use of the photographic material thus produced in the production of direct positive and negatively emitting photographic materials is described.
    Type: Grant
    Filed: June 12, 1975
    Date of Patent: October 31, 1978
    Assignee: Zlafop pri BAN
    Inventors: Yordan P. Malinovski, Borislav D. Mednikarov, Jakob J. Assa
  • Patent number: 4113551
    Abstract: A family of etchants for polycrystalline silicon based upon an aqueous solution of NR.sub.4 OH, where R is an alkyl group, has a relatively low etching rate enabling the exercise of better control over the delineation of fine structures.
    Type: Grant
    Filed: December 16, 1977
    Date of Patent: September 12, 1978
    Assignee: International Business Machines Corporation
    Inventors: Ernest Bassous, Cheng-Yih Liu
  • Patent number: 4112159
    Abstract: A process is provided for the continuous production of modular tubular filter elements using nonwoven webs in cylindrical or sheet form spun from thermoplastic fibers, spinning the fibers continuously from a melt onto a rotating internal tubular core for the filter element, serving as a mandrel, and winding them up on the core to form a wound tube.
    Type: Grant
    Filed: January 14, 1976
    Date of Patent: September 5, 1978
    Assignee: Pall Corporation
    Inventor: David B. Pall
  • Patent number: 4110149
    Abstract: The longitudinal support members for the endless helical band are circularly disposed about and adjustable radially of the mandrel axis. Each support member is mounted on a plurality of parallel arms of equal length spaced longitudinally of the mandrel axis. The outer end portions of the arms for each support member are pivotally connected thereto. At each of various locations along the mandrel axis, the inner end portions of the arms at that location for all of the support members are pivotally connected to a ring which is adjustable along the mandrel axis to effect radial adjustment of the support members, and a support ring, also adjustable along the mandrel axis, is provided to support the arms radially when the longitudinal support members are in an inner portion of their adjustment range.
    Type: Grant
    Filed: July 7, 1977
    Date of Patent: August 29, 1978
    Assignee: Owens-Corning Fiberglas Corporation
    Inventor: Peder U. Poulsen
  • Patent number: 4110237
    Abstract: This invention provides copper and copper alloy etching solutions comprising a mixed aqueous solution of a peroxysulfate with a diazine compound and a halogen compound added as the catalyst. There is also provided a process for etching copper and copper alloys with said etching solutions.
    Type: Grant
    Filed: June 28, 1977
    Date of Patent: August 29, 1978
    Assignee: Tokai Denka Kabushiki Kaisha
    Inventors: Akira Matsumoto, Katsutoshi Itani
  • Patent number: 4110142
    Abstract: A splicing block for and a method of splicing multitrack magnetic sound recording tape includes a block having a longitudinal groove therein with a transverse slit thereacross. The angle of the slit is such that one outside track leads the other by 0.150 inch regardless of the tape width. The tape pieces to be spliced are set in the block, cut in the slit, and then joined wherein the splice is effected so that one outside track leads the other by 0.150 inch.
    Type: Grant
    Filed: October 17, 1977
    Date of Patent: August 29, 1978
    Assignee: Joel Tall, Inc.
    Inventor: Joel Tall
  • Patent number: 4109038
    Abstract: A suede-like raised woven fabric which comprises: warp yarns; weft yarns, each being a single twist filament yarn or a loopy textured filament yarn consisting of a bundle of fine fibers; and an elastic polymer applied to the fabric. The bundle of fine fibers consists of a raised portion having an average monofilament denier of from 0.05 to 0.4 and an unraised portion having an average monofilament denier of above 0.4 but not exceeding 0.8.
    Type: Grant
    Filed: May 23, 1977
    Date of Patent: August 22, 1978
    Assignee: Teijin Limited
    Inventors: Kazushige Hayashi, Iwao Fujimoto, Toshio Morishita, Norihiro Minemura, Norio Yoshida, Kiyotaka Ozaki, Takanori Shinoki
  • Patent number: 4108712
    Abstract: Heat sealing apparatus is provided in which a heat seal head defines longitudinal slots which underlie a wire heating element and communicate with a cooling fluid path to provide rapid cooling to the heating element. The longitudinal slots have a width that is narrower than the width of the wire to provide wall supports on opposite sides of the wire.
    Type: Grant
    Filed: February 22, 1977
    Date of Patent: August 22, 1978
    Inventors: Harry Bala, John C. Mowli
  • Patent number: 4108716
    Abstract: A process for polishing both the cadmium and sulfur face of CdS using buffered HCl solutions has been found to produce very smooth crystal surfaces. Use of HCl solutions buffered to a pH between 2.2 and 2.8 to polish the cadmium face is quite effective. An equally effective polishing agent for the sulfur face is a HCl solution buffered to a pH between 0.7 and 1.3.
    Type: Grant
    Filed: December 22, 1976
    Date of Patent: August 22, 1978
    Assignee: Bell Telephone Laboratories, Incorporated
    Inventors: Assunta Anna Pritchard, Sigurd Wagner
  • Patent number: 4108657
    Abstract: A multi-active photoconductive insulating element is disclosed having at least two layers comprising an inorganic photoconductor-containing layer and an aggregate photoconductive layer. The aggregate photoconductive layer contains a continuous polymeric phase having dispersed therein a co-crystalline complex composed of (i) at least one polymer having an alkylidene diarylene group in a recurring unit and (ii) at least one pyrylium-type dye salt.
    Type: Grant
    Filed: December 15, 1975
    Date of Patent: August 22, 1978
    Assignee: Eastman Kodak Company
    Inventor: William Mey
  • Patent number: 4106976
    Abstract: A nozzle array structure for pressurized fluid jets includes a uniform deposited membrane having an array of uniform small orifices therein overlaying a planar substrate having an array of larger aperture openings therethrough with approximately the same central axes as the orifice array. The method of making includes forming a substrate of a planar single crystal material oriented with the (100) planes parallel to the surface. A membrane comprising a uniform coating of an inorganic material is applied to the planar surface of the substrate. The substrate is preferentially etched from the rear surface to form an array of openings therein extending therethrough to the membrane. The membrane is then selectively eroded to form an array of uniform small orifices therein.
    Type: Grant
    Filed: November 9, 1977
    Date of Patent: August 15, 1978
    Assignee: International Business Machines Corporation
    Inventors: Charles Chiou, Guido Galli, Karl H. Loeffler, Max R. Lorenz
  • Patent number: 4105487
    Abstract: This invention is concerned with a process of and an apparatus for producing green tires, in which a green case shaped on a tire band building drum is transferred onto a tire building drum by a transfer ring mechanism and an inextensible endless belt built on a belt building drum is also transferred and applied onto the green case, deformed into a toroidal form on the tire building drum, by the transfer ring mechanism. The transfer ring mechanism serves to hold and release the green case and the endless belt and has such a construction to be movable along the axes of the tire band building drum, the tire building drum and the belt building drum.
    Type: Grant
    Filed: December 22, 1976
    Date of Patent: August 8, 1978
    Assignee: Bridgestone Tire Company Limited
    Inventors: Masayoshi Suzuki, Tatuo Oojimi, Toshinori Yabe, Shoji Takahashi
  • Patent number: 4105493
    Abstract: The invention concerns a method for producing foils for dry shavers.The method of the invention includes forming a layer of photosensitive material on each side of a metal plate, exposing each side to light to produce a pattern of exposed and unexposed areas, corresponding to perforations at one side and recesses in the backs of the bars of the foil on the other side, etching each side, them removing photosensitive material from the front side and carrying out further etching until the foil is completely perforated.The invention is especially suitable for forming foils for battery operated dry shavers.
    Type: Grant
    Filed: August 8, 1977
    Date of Patent: August 8, 1978
    Assignee: The Gillette Company
    Inventor: Jean-Daniel Chauvy
  • Patent number: 4105486
    Abstract: Apparatus for transferring a tire component such as a belt and tread assembly includes an annular supporting frame with a plurality of radially movable component gripping sectors mounted on the frame at equal circumferentially spaced locations, each of the sectors being carried by a pair of radially spaced generally parallel links pivotally connected to the frame and to the sectors. An actuating ring is movable circumferentially of the frame and for each sector, an actuating link extends generally axially between the ring and at least one of each pair of links to pivot the links radially upon circumferential movement of the actuating ring. In this manner, the sectors move radially uniformly. The links are connected to one common side of the sectors by fasteners projecting from the other common side so that a different set of sectors may readily be installed. An adjustable stop limits the movement of the sectors. The frame is transported from one position to another to transfer the tire component.
    Type: Grant
    Filed: March 30, 1977
    Date of Patent: August 8, 1978
    Assignee: NRM Corporation
    Inventor: Armindo Cantarutti
  • Patent number: 4105485
    Abstract: Apparatus for forming the stranded conductor portion of a fully-filled electric cable in which the components of the strand in side-by-side relation are fed through an inlet die at one end of a chamber in which a filling medium at a temperature at least 5.degree. C. above the dropping point temperature of the medium and under a pressure above atmospheric pressure is circulated in a direction opposite to the conductor feed direction. In the chamber, the components, preferably groups of conductors, are spread apart by a perforated disc through which they pass and are then twisted together at an outlet die at the opposite end of the chamber to form a strand with a coating of the medium and with the medium filling the spaces between components. From the outlet die the strand passes directly into a bath of the medium in a temperature controlled tank at atmospheric pressure but which maintains the medium at least 5.degree. C. above its dropping point temperature.
    Type: Grant
    Filed: October 20, 1976
    Date of Patent: August 8, 1978
    Assignee: Industrie Pirelli Societa per Azioni
    Inventors: Antonio Portinari, Piero Lavezzari
  • Patent number: 4105488
    Abstract: Apparatus for building a raw edge V-belt carcass comprising, a drum about which differing plies of material are wrapped and about which a cord is helically wound. A servicer adapted to supply rubberized fabric is located adjacent the drum. A squeegee adapted to apply a gummy film mounted on a fabric liner is located adjacent the drum and has an applicator roll engageable with a partially formed carcass on the drum. A cord winder mechanism has a head mounted adjacent the drum and has a motor-driven screw for causing the head to move along the length of the drum. The screw motor is tied to the drum motor at a ratio which is infinitely adjustable within limits to vary the pitch of the cord as it is wound on the drum. The cord winder has a mechanism for detecting changes in the tension on the cord and for using that information to cause variations in the speed of a cord let-off roll so that the speed of the cord let-off roll matches the demand caused by the speed of the drum.
    Type: Grant
    Filed: February 3, 1976
    Date of Patent: August 8, 1978
    Assignee: Akron Standard, Division of Eagle-Picher Industries, Inc.
    Inventors: Richard H. Hayes, Lellan L. McFarland, George L. Schrum, Robert S. Vanderzee