Patents Assigned to The Hall Company
  • Patent number: 5777014
    Abstract: A plasticized polyvinyl chloride (PVC) resin composition and method of plasticizing and decreasing the hydrophobicity of said PVC resin for adherence of aqueous coating compositions, such as water-based inks, by incorporating into the PVC resin a polymeric plasticizer for PVC, a monomeric diacid plasticizer, comprising primarily a C.sub.5, C.sub.4 or C.sub.3 diacid plasticizer, or mixtures, in a ratio of polymeric/monomeric plasticizers of 5/95 to 95/5, preferably 90/10 to 60/40, and at least about 0.1%, based on the weight of the PVC resin, of a metal salt additive, wherein the metal salt is an oxide or a hydroxide and has an oxidation state of plus two, three or four, preferably calcium oxide and/or calcium hydroxide. The monomeric/polymeric plasticizer combination together with the metal salt additive(s) unexpectedly decreases the hydrophobicity of the PVC surface for strong adherence of water-based inks and coatings thereto.
    Type: Grant
    Filed: December 3, 1996
    Date of Patent: July 7, 1998
    Assignee: The C.P. Hall Company
    Inventors: Steven P. Hopper, Kimberly L. Stefanisin, Ronald D. Svoboda
  • Patent number: 5607530
    Abstract: An apparatus for applying polymer to metal pipe during the pipe forming process has a pump for pumping the polymer, a first extruder die receiving polymer from the pump and configured to apply polymer to metal pipe as the metal pipe is being formed from metal stock, and a second extruder die for forming pipe couplers. A valve effects diversion of the polymer from the first extruder die to the second extruder die when a stoppage of the pipe forming process occurs.
    Type: Grant
    Filed: August 9, 1995
    Date of Patent: March 4, 1997
    Assignee: W.E. Hall Company
    Inventors: Robert E. Hall, James R. Andre, J. K. Leason
  • Patent number: 5480505
    Abstract: A metal pipe and method of forming the same with an integrally formed liner for use in corrosive and abrasive environment is disclosed. The liner is comprised of a relatively thick polyethylene which is thermally bonded to the metal pipe. An intermediate co-extruded polymer layer of ethylene acrylic acid and a polyethylene/ethylene acrylic acid blend is applied to the metal pipe to facilitate thermal bonding. The intermediate layer is applied to the sheet metal in a pre-treatment process prior to roll forming ribs into the sheet metal. The polyethylene liner is applied after the ribs are formed, preferably after the pipe has been formed, to provide a smooth, hydraulically efficient surface which is resistent to the corrosive action of sulfuric acid and the like encountered in sanitary applications, as well as abrasion caused by the flow of water-born debris such as dirt and gravel as is encountered in culvert applications.
    Type: Grant
    Filed: April 8, 1994
    Date of Patent: January 2, 1996
    Assignee: W. E. Hall Company
    Inventor: James R. Andre
  • Patent number: 5454402
    Abstract: A hydraulically efficient metal pipe particularly adapted for use in storm drain and sanitary sewer applications which is adapted for use with a self-supporting interior inert protective lining. The pipe has a channeled wall defining a plurality of outwardly projecting structural ribs and a hydraulically smooth interior surface. The ribs are preferably of a helical configuration and the channels which are formed interiorly thereof are generally either square or rectangular in cross-section and are open along the interior surface of the pipe. The walls defining the ribs can be tapered inwardly to form triangular-shaped channels so as to define an anchor throughout the length of the pipe for securing thereto a smooth interior lining of corrosion-resistant protective material.
    Type: Grant
    Filed: April 29, 1994
    Date of Patent: October 3, 1995
    Assignee: W. E. Hall Company
    Inventors: James R. Andre, Larry Daniels
  • Patent number: 5316606
    Abstract: A metal pipe and method of forming the same with an integrally formed liner for use in corrosive and abrasive environments is disclosed. The liner is comprised of a relatively thick high density polyethylene which is thermally bonded to the metal pipe. An intermediate co-extruded polymer layer of ethylene acrylic acid and a polyethylene/ethylene acrylic acid blend is applied to the metal pipe facilitate thermal bonding. The intermediate layer is applied to the sheet metal in a pre-treatment process prior to roll forming ribs into the sheet metal. The polyethylene liner is applied after the ribs are formed To provide a smooth, hydraulically efficient surface which is resistent to the corrosive action of sulfuric acid and the like encountered in sanitary applications, as well as abrasion caused by the flow of water-born debris such as dirt and gravel as is encountered in culvert applications. Various means for further securing the polyethylene layer to the metal pipe surface are disclosed.
    Type: Grant
    Filed: July 26, 1991
    Date of Patent: May 31, 1994
    Assignee: W. E. Hall Company
    Inventor: James R. Andre
  • Patent number: 5096206
    Abstract: A pipe joint sealer for providing a watertight joint in metal pipe, cast concrete pipe, plastic pipe and the like is disclosed. The pipe joint sealer prevents fine dirt and sand from entering the pipe through the joint. The pipe joint sealer is comprised of an absorbent material such as low density, open cell, resilient foam which is saturated with a quantity of water reactive urethane prepolymer. The urethane prepolymer saturated foam is sandwiched between two layers of a geotextile fabric such as polypropylene which permit moisture to come into contact with the urethane prepolymer saturated foam. Moisture causes the urethane prepolymer saturated foam to expand and thereby form a dynamic watertight seal. Drying of the urethane prepolymer saturated foam causes it to shrink back toward its original volume. Thereafter, the pipe joint sealer of the present invention forms a new watertight seal each time it is wetted.
    Type: Grant
    Filed: June 1, 1990
    Date of Patent: March 17, 1992
    Assignee: W. E. Hall Company
    Inventors: James R. Andre, Paul A. Carothers
  • Patent number: 5028647
    Abstract: The present invention is a composition comprising a linear saturated polyester and from 0.5 to 30 percent by weight of thee polyester of at least one ester of an ethoxylated polyfunctional alcohol having a molecular weight of from 500 to about 1,500. The ester is of an ethoxylated aromatic alcohol and a carboxylic acid wherein the ethoxylated aromatic alcohol has the formulaHO (R O).sub.n --R.sup.1 --(OR).sub.n --OHwherein, R is the same or different hydrocarbon radical of from 2 to 4 carbon atoms, n can be the same or a different integer of from 2 to 15; and R.sup.1 is an aromatic radical preferably derived from an aromatic dialcohol, most preferably bisphenol A. The ethoxylated aromatic alcohol has greater than 20 carbon atoms. The acid is a carboxylic acid of from 1 to 25 and preferably 3 to 10 carbon atoms, and from 1 to 10 carboxyl groups. Preferably the acid has from 3 to 10 carbon atoms and one carboxyl group.
    Type: Grant
    Filed: March 13, 1989
    Date of Patent: July 2, 1991
    Assignees: Allied-Signal Inc., The C.P. Hall Company
    Inventors: John C. Haylock, Harold W. Tuller, Nicholas Vanderkooi, Jr.
  • Patent number: 4978447
    Abstract: An apparatus for cleaning algae and debris from a water treatment tank includes a carriage that is mounted for movement while extending over a clean water flow channel of the treatment tank. A motor drives the carriage around the tank while a guide maintains the carriage in the proper position for cleaning. A series of brush assemblies are connected to a frame of the carriage. The brushes of these assemblies are adapted to engage and clean the weir, baffle, spillway and clear water flow channel of the tank as the carriage moves. Additionally, a directional controller automatically controls the direction of operation of the motor and hence the direction of movement of the carriage. The directional controller also includes a sensor adapted to sense any obstructions, such as a service walkway, extending across the movement path of the carriage. Upon sensing an obstruction, the direction of movement of the carriage is reversed.
    Type: Grant
    Filed: January 26, 1990
    Date of Patent: December 18, 1990
    Assignee: Ford W. Hall Company
    Inventor: Ford W. Hall
  • Patent number: 4905847
    Abstract: A display shelf system that includes at least one shelf that is preferably titled from the horizontal and dividers that are releasably secured to the shelf to segregate merchandise and said dividers include securement to affix the same to the shelf and indexing provided on the shelf and dividers to align and position said dividers with respect to said shelf.
    Type: Grant
    Filed: May 2, 1988
    Date of Patent: March 6, 1990
    Assignee: Stuart Hall Company, Inc.
    Inventor: Charles G. Hanson
  • Patent number: 4514325
    Abstract: This invention relates to water based and water dilutable compositions containing about 5 to 20% by weight of water insoluble lipophilic organic solvents and a coupling agent comprising a compound having the formula ##STR1## where R--(CH.sub.2).sub.n is the residue of a sulfonated monounsaturated C.sub.12 to C.sub.18 fatty acid having the C--S attachment in one of the carbon atoms of the residue and M is an alkali metal, alkaline earth metal or amine, the weight ratio of solvent to coupling agent being from about 1:1 to 2:1. The composition is useful for metal cleaning, rust removing and phosphatizing.
    Type: Grant
    Filed: April 13, 1984
    Date of Patent: April 30, 1985
    Assignee: J. Hall Company
    Inventors: Anthony Russo, Thomas Mauthner
  • Patent number: 4423294
    Abstract: A laminate switch assembly or keyboard comprises a tensioned dome switch plate having improved durability which provides tactile feedback to the operator. Each tensioned dome on the switch plate is aligned with an electrical contact area formed on a printed circuit board so that depression of the dome completes an electrical circuit through the aligned contact area. Each tensioned dome is surrounded by a reinforcing collar or band which relieves the stresses normally produced in the transition area between the switch domes and the remaining planar portion of the switch plate.
    Type: Grant
    Filed: June 17, 1982
    Date of Patent: December 27, 1983
    Assignee: The Hall Company
    Inventors: Richard J. Walser, Gary M. Wyant
  • Patent number: 4375552
    Abstract: Waste streams from adipic acid manufacture containing nitric, succinic, glutaric and adipic acids and valuable catalytic metal as salts are treated with alcohols, thereby separating, as esters, succinic and glutaric acids which would contaminate pure adipic acid on recycling, and allowing the re-use of the resulting stream containing nitric acid and metal catalytic salts.
    Type: Grant
    Filed: June 15, 1970
    Date of Patent: March 1, 1983
    Assignee: C. P. Hall Company
    Inventor: Vincent P. Kuceski
  • Patent number: 4309302
    Abstract: Aliphatic alcohols, esters of such alcohols and aliphatic dicarboxylic acids, mixtures of such alcohols and esters and mixtures of such alcohols and esters with aliphatic carboxylic acids are used as additives in the vulcanization of rubbers.
    Type: Grant
    Filed: November 6, 1979
    Date of Patent: January 5, 1982
    Assignee: The C. P. Hall Company
    Inventors: Vincent P. Kuceski, Lenoir Black
  • Patent number: 4185150
    Abstract: Aqueous bleed streams containing soluble aliphatic dicarboxylic acids from the nitric acid oxidation of organic materials and production of dicarboxylic acids, are processed to neutralize or remove nitric acid and also catalysts, if desired, and are then reacted with polyfunctional amines to form polyamides useful in numerous commercial applications.
    Type: Grant
    Filed: March 20, 1978
    Date of Patent: January 22, 1980
    Assignee: The C. P. Hall Company
    Inventor: Vincent P. Kuceski
  • Patent number: 4182844
    Abstract: An energy-conserving method for the manufacture of polyaminoamides is described which involves the reaction of a polycarboxylate ester with a mono and/or polyalkylene polyamine in the presence of 0 to about 5% by weight water by heating approximately stoichiometric proportions of the two reactants to the temperature at which the amidification reaction becomes self-sustaining, then utilizing the exothermic heat of reaction to sustain the reaction at a desired temperature. During the reaction, the heat of reaction is used to vaporize an alcohol reaction product and remove the alcohol from the reaction vessel and from further contact with the reaction vessel contents.
    Type: Grant
    Filed: September 1, 1978
    Date of Patent: January 8, 1980
    Assignee: The C.P. Hall Company
    Inventor: Vincent P. Kuceski
  • Patent number: 4173552
    Abstract: Aliphatic alcohols, esters of such alcohols and aliphatic dicarboxylic acids, mixtures of such alcohols and esters and mixtures of such alcohols and esters with aliphatic carboxylic acids are used as additives in the vulcanization of rubbers.
    Type: Grant
    Filed: February 17, 1976
    Date of Patent: November 6, 1979
    Assignee: The C. P. Hall Company
    Inventors: Vincent P. Kuceski, Lenoir Black
  • Patent number: 4162155
    Abstract: Agriculturally-active aqueous compositions containing an agriculturally-active organic substance and water are stabilized by the addition to the system of a minor amount of N-acetyl-p-aminophenol. The N-acetyl-p-aminophenol is relatively non-toxic and is degradable, thereby making it particularly attractive for agricultural use in view of its high degree of effectiveness as a stabilizer. Advantageous agriculturally-active organic substances are the compounds having carbon to carbon unsaturation, particularly those having aliphatic unsaturation.
    Type: Grant
    Filed: February 25, 1977
    Date of Patent: July 24, 1979
    Assignee: Howard Hall & Company
    Inventor: David W. Young
  • Patent number: 4149516
    Abstract: The grill body is an integral member, preferably made of microcrystalline glass and formed with opposed series of corresponding pairs of upwardly opening saddles at each of two different intermediate levels in two opposed sidewalls. Each pair of saddles receives the opposite ends of a metal bar or the like, to provide two levels of support bars. Preferably, the support bars at each level are not interconnected by cross-bars so they may be removed, cleaned and even replaced individually. Particular gas burner and electric heating element constructions are illustrated.
    Type: Grant
    Filed: April 11, 1977
    Date of Patent: April 17, 1979
    Assignee: Don Hall Company
    Inventor: George W. Hall
  • Patent number: 4038434
    Abstract: N-Acyl-2,6-dialkyl-p-aminophenols wherein each of the 2,6-alkyl groups has a tertiary.alpha.-carbon atom, are used as antioxidants to stabilize edible organic substances subject to deterioration by oxidation, particularly edible fats, fatty oils, fatty alcohols, fatty acids, and esters of fatty acids.
    Type: Grant
    Filed: March 12, 1976
    Date of Patent: July 26, 1977
    Assignee: Howard Hall & Company
    Inventor: David W. Young
  • Patent number: D252664
    Type: Grant
    Filed: April 11, 1977
    Date of Patent: August 21, 1979
    Assignee: Don Hall Company
    Inventor: George W. Hall