Patents Represented by Attorney Robert H. Robinson

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  • Method for improving adhesion of joint compound to metal cornerbead
    Patent number: 4587173
    Abstract: Metal cornerbead for drywall partitions is coated with a water reducible acrylic resin to improve the adhesion of joint compound to it. Aqueous solution of resin may be added to roll-forming lubricant such as hexylene glycol.
    Type: Grant
    Filed: April 26, 1984
    Date of Patent: May 6, 1986
    Assignee: United States Gypsum Company
    Inventors: Geronimo E. Lat, Terrance L. Williams
  • Clip for use with runner and area separation wall structure utilizing clip
    Patent number: 4586305
    Abstract: An integral clip for use in combination with a lower channel-form runner for securing and supporting a pair of spaced-apart wallboard panels in a demountable structure, the clip having flanges for engaging and being supported upon the edges of the flanges of the runner, and having a platform for supporting the lower edges of the wallboard panels in a position spaced above the bottom of the runner to prevent absorption of water and formation of mildew at the edges of the wallboard panels.
    Type: Grant
    Filed: April 2, 1984
    Date of Patent: May 6, 1986
    Assignee: United States Gypsum Company
    Inventor: Henry A. Balinski
  • Furring bracket for fireproofed beams
    Patent number: 4584811
    Abstract: Fireproofing of I-beams in building structures is necessary to prevent the loss of strength in the event of a fire. Gypsum board liners for elevator shafts and the like rest in runners attached to the I-beams. Proper placement of the runners is especially critical in the construction of elevator shafts but the correct location of the runners may not be known until after the I-beams have been fireproofed. The furring clip disclosed herein snaps onto the bottom flange of an I-beam and is fireproofed along with the beam. The ceiling runner may be screw attached to the furring clip after the hoistway rails in the elevator shaft are in place.
    Type: Grant
    Filed: August 27, 1984
    Date of Patent: April 29, 1986
    Assignee: United States Gypsum Company
    Inventor: Henry A. Balinski
  • Concealable double acting fastener for wallboard
    Patent number: 4584808
    Abstract: A first wallboard and a second wallboard in edge-to-edge abutment are secured to an underlying stud by a double acting fastener which bends around the stud from a flange to the web where a screw passing through a bight in the fastener holds it in place. Oppositely oriented wire talons 20 and 25 are extensions of a first arm 17 and a second arm 18, respectively. Talon 20 is impaled in the edge of the first wallboard and talon 25 is impaled in the edge of the second wallboard. A loop 23 in the second arm 18 rests behind the first wallboard and both arms rest behind the second wallboard. A force tending to move either wallboard away from the stud is resisted by both arms.
    Type: Grant
    Filed: April 9, 1984
    Date of Patent: April 29, 1986
    Assignee: United States Gypsum Company
    Inventor: Alan C. Wendt
  • Wire impaling clip for gypsum panels
    Patent number: 4578922
    Abstract: Gypsum panels and the like are attached to "H" studs by a resilient, one-piece wire clip having talons which are anchored in the edge of a panel and a clamping portion which grips a flange of the stud.
    Type: Grant
    Filed: September 30, 1983
    Date of Patent: April 1, 1986
    Assignee: United States Gypsum Company
    Inventor: Alan C. Wendt
  • Apparatus for the production of mineral fibers having supplemental collection chamber exhaust
    Patent number: 4576620
    Abstract: An apparatus for the production and collation of mineral fibers, comprising an air fiberization apparatus for generating mineral fibers, a collection chamber for collecting the fibers produced, and a cyclone type air exhaust apparatus connected by a duct to an upper portion of the collection chamber, the exhaust apparatus reducing the air pressure generated within the collection chamber thereby increasing the efficiency of fiber collection, and means for returning mineral fibers escaping from the collection chamber through the cyclone exhaust apparatus to the main fiber discharge position.
    Type: Grant
    Filed: December 4, 1984
    Date of Patent: March 18, 1986
    Assignee: United States Gypsum Company
    Inventors: William F. Porter, Michael J. Porter, Dwight E. Johnson
  • Curtain wall stud slide clip
    Patent number: 4570400
    Abstract: A clip for connecting a curtain wall stud to the load bearing framework of a building is provided with detents so that the clip may be pushed onto the stud and does not have to be supported by hand while it is being welded to the framework.
    Type: Grant
    Filed: December 12, 1983
    Date of Patent: February 18, 1986
    Assignee: United States Gypsum Company
    Inventors: Richard E. Slager, Henry A. Balinski
  • Partition system adapted to support a cantilevered load
    Patent number: 4570390
    Abstract: A slotted standard adapted to receive a shelf bracket or the like is fastened to a metal stud having a longitudinal channel defined by the fingers of a furcated extension of the sutd's web. The walls of the channel are either threaded or threadable to receive a screw which passes through the standard and fastens the standard to ledges on both sides of the channel opening. When placed in a partition, the stud serves as an anchor for the standard so that a bracket may be attached to the standard in order to support a shelf, a piece of furniture or the like.
    Type: Grant
    Filed: November 14, 1983
    Date of Patent: February 18, 1986
    Assignee: United States Gypsum Company
    Inventor: Alan C. Wendt
  • Base trim system for partition corners
    Patent number: 4569171
    Abstract: A base trim piece for the corner of intersecting walls has two upright wings angularly joined at a first edge of each, a recessed flange joined to the opposite edge of each wing, and a planar hook projecting upwardly from each such flange to lie in a plane between the vertical planes of the corresponding wings and flanges. The hook acts as a fastener for an abutting planar base trim piece.
    Type: Grant
    Filed: January 25, 1985
    Date of Patent: February 11, 1986
    Assignee: United States Gypsum Company
    Inventors: Albert F. Kuhr, Alan C. Wendt
  • Edge attachment clip for wall panels
    Patent number: 4567706
    Abstract: An integral clip for attaching wall panels to metal studs having flanges in engagement with the wall panels, the clip comprising impaling points adapted to be driven into the edge of a panel and additional impaling points adapted to be driven into a major surface of the panel for securing the clip to the panel, the clip also having flange attachment members struck from the clip and adapted to engage the flange of a stud, thereby affixing the panel to the stud.
    Type: Grant
    Filed: August 3, 1983
    Date of Patent: February 4, 1986
    Assignee: United States Gypsum Company
    Inventor: Alan C. Wendt
  • Movable partition base attachment
    Patent number: 4565041
    Abstract: A base trim attachment assembly is provided for movable partitions comprising retainer clips having formed barbs which are installed into gypsum panels by pressing the barbs into the panels, and having means for receiving a nail which is driven on a downward angle into the panels. The nails prevent outward movement of the clips and the barbs restrict any upward movement which would normally permit loosening of the nails. After the clips are installed, the base is slipped down over the clips until it snaps in place. The present structure permits a very thin base which matches existing moveable partition components.
    Type: Grant
    Filed: May 9, 1983
    Date of Patent: January 21, 1986
    Assignee: United States Gypsum Company
    Inventor: Alan C. Wendt
  • Fire resistant gypsum board containing mineral wool fibers and method
    Patent number: 4557973
    Abstract: Blown mineral wool fibers are introduced into slurries (such as gypsum board core formulations and steel column fireproofing plaster formulations) by first blending and coating the blown mineral wool with a powdered calcium sulfate to produce a light, open nodulated effect. When mixed into aqueous calcined gypsum slurries, the nodules open up, thoroughly dispersing the mineral wool--calcium sulfate blend in the aqueous slurry and contributing fire resistant properties to the set gypsum product.
    Type: Grant
    Filed: December 28, 1983
    Date of Patent: December 10, 1985
    Assignee: United States Gypsum Company
    Inventor: Mohammad H. Ali
  • Gas desulfurization reactant
    Patent number: 4552683
    Abstract: A process for adsorbing sulfur dioxide from a gas comprising contacting a gas containing SO.sub.2, such as a flue gas, with about stoichiometric amounts of a specially prepared calcium oxide so that substantially all of the sulfur dioxide content is reacted throughout the calcium oxide particle to form a calcium sulfate reaction product. The useful calcium oxide particles comprise a highly voided skeletal structure of very large surface area and large pore volume with numerous macro pores. Such particles are obtained by flash calcining sand-size grains of calcium carbonate, such as aragonite, calcite or dolomite.
    Type: Grant
    Filed: September 14, 1983
    Date of Patent: November 12, 1985
    Assignee: United States Gypsum Company
    Inventors: Byron E. Powell, Virendar S. Bakhshi, Donald A. Randolph
  • Paper having calcium sulfate mineral filler for use in the production of gypsum wallboard
    Patent number: 4548676
    Abstract: A composite paper particularly adapted for use as cover sheets in the production of gypsum wallboard, the paper being sufficiently porous to permit better drainage and more rapid drying in the production of the paper, and when applied to the surfaces of a gypsum slurry for forming wallboard, permits less heat to be utilized in the wallboard conversion, thereby saving energy in the board production required for drying the board. The paper comprises in weight percent:(A) cellulosic fibers in an amount of from about 65% to about 90% and preferably having a fiber freeness of from about 300 ml to about 550 ml Canadian Standard Freeness,(B) calcium sulfate as a filler in an amount of from about 10% to about 35%,(C) a binder in an amount from about 1% to about 31/2%,(D) a flocculant in an amount of from about 0.1% to about 0.2%,(E) a buffering agent in an amount from about 0.
    Type: Grant
    Filed: June 18, 1984
    Date of Patent: October 22, 1985
    Assignee: United States Gypsum Company
    Inventors: Norman E. Johnstone, John R. Kehoe
  • Process for continuously calcining gypsum to low dispersed consistency stucco
    Patent number: 4533528
    Abstract: Wet chemical gypsum cake may be directly fed to a continuous kettle calciner to produce a stucco having lowered dispersed consistency. Pre-drying of the chemical gypsum is eliminated and the thus produced stucco may be used in the formulation of building plasters and in gypsum wallboard manufacture that will use less fuel for drying excess gauging water.
    Type: Grant
    Filed: July 15, 1983
    Date of Patent: August 6, 1985
    Assignee: United States Gypsum Company
    Inventor: Michael F. Zaskalicky
  • Apparatus for forming embossed acoustical tile
    Patent number: 4530653
    Abstract: Apparatus for making an acoustical tile having a pattern of raised portions and portions in relief on the tile surface is provided by a hollow embossing roll containing the pattern in reverse and interstices communicating from the surface of the roll into the hollow interior of the roll. In operation the roll contacts the formable, acoustical tile fiber composition pulp with sufficient force as to disspell the pulp, vent air that may be between the roll and the pulp surface through the roll, and produce a reversed pattern of the roll upon the pulp surface, then releasing the pulp from the surface of the roll by rotation of the roll.
    Type: Grant
    Filed: June 27, 1984
    Date of Patent: July 23, 1985
    Assignee: United States Gypsum Company
    Inventor: Yasuo Ishii
  • Process for expanding and coating perlite
    Patent number: 4525388
    Abstract: Expanded perlite is produced while simultaneously or substantially simultaneously coating the expanded perlite with an hydrophobic coating material by passing the expanded perlite and heated expander exhaust gases from the expansion chamber through a cooling and coating chamber provided with spray nozzles to provide a stream of atomized coating material onto the expanded perlite, while upstream thereof an air intake and temperature sensor are situated to control the air flow and temperature in the cooling and coating chamber so as to provide proper curing temperatures for the coating material upon the expanded perlite before it is separated from the exhaust gases.
    Type: Grant
    Filed: December 23, 1983
    Date of Patent: June 25, 1985
    Assignee: USG Corporation
    Inventors: Thomas E. Rehder, Terrance L. Williams
  • Pressure coating of mineral fillers
    Patent number: 4520073
    Abstract: Mineral filler materials are provided with improved hydrophobic coatings by pressure coating of porous minerals using steam as a carrier for the coating material. Thereby more complete sealing of fissures and cracks in the porous filler materials' surface is provided, resulting in very water-resistant coated particles useful in filling polymeric substrates such as paints, plastics and joint compounds.
    Type: Grant
    Filed: December 23, 1983
    Date of Patent: May 28, 1985
    Assignee: USG Corporation
    Inventors: Donald A. Randolph, Kenneth R. Watkins
  • Method for forming a lightweight cementitious structural product and product formed thereby
    Patent number: 4518652
    Abstract: A method for producing a lightweight set cementitious product, and more specifically, gypsum wallboard, having excellent strength and paper-to-core bond, which method comprises producing a foam comprising polyvinyl alcohol and water, introducing the foam thus formed into an aqueous cementitious slurry, depositing the slurry between paper cover sheets, and permitting the cementitious slurry to set. In a further embodiment an emulsion formed of asphalt and wax is added to the cementitious slurry to impart water resistance, the polyvinyl alcohol of the foaming agent cooperating with the asphalt and wax emulsion to improve the water resistant properties of the set gypsum wallboard.
    Type: Grant
    Filed: July 15, 1983
    Date of Patent: May 21, 1985
    Assignee: United States Gypsum Company
    Inventor: Michael D. Willoughby
  • Clip for use with runner and runner assembly including the clip
    Patent number: 4513557
    Abstract: An integral clip for use in combination with a channel-form runner for securing a pair of parallel spaced-apart wallboard panels in a demountable wall structure, the channel having integral means for retaining the clip therein, the clip having means for supporting the wallboard panels within the runner, wherein a runner of single dimension may be utilized to retain wallboards of different thicknesses by utilizing clips of various dimensions.
    Type: Grant
    Filed: February 22, 1984
    Date of Patent: April 30, 1985
    Assignee: United States Gypsum Company
    Inventor: Alan C. Wendt