Abstract: A device for cleaning the nozzle openings of a floater oven having duct-like nozzles with rows of nozzle openings along their length. A main frame which may be disposed adjacent to the oven nozzles is provided as a support structure. A main carriage adapted to travel back and forth along the length of the main frame is slidably mounted on the frame. A set of brushes adapted to be driven in rotation are mounted on the main carriage so they may be positioned in contact with the nozzle openings to be cleaned. In operation, the main frame is located adjacent to an oven nozzle. The main carriage is transported along the main frame as the brushes are rotated. The brushes automatically clean the nozzle openings along the nozzle.
Abstract: A sheet material to be saturated with a fast-reacting saturant, approximately one minute at room temperature, passes under a trough positioned across the travelling web and having a longitudinal slot through its bottom. A threaded rod having a diameter larger than the slot width is laid over the slot in the trough. The fast-reacting saturant is supplied to a traversing dispensing device located above the trough. This traversing device dispenses the saturant into the trough. The threaded rod co-acts with the slot in the bottom of the trough to meter the amount of fast-reacting saturant flowing through the trough and onto the sheet material moving under and contacting the bottom of the trough.
Abstract: A liquid radiation and moisture curable 100% reactive coating which cures to yield a clear, tough, glossy abrasion-resistant cured coating is described. The radiation and moisture curable 100% reactive coating composition comprises: 15 to 60 parts by weight acrylate diluents; and 40 to 85 parts by weight of isocyanate terminated urethane prepolymers formed by reacting a mixture of polyester diols and triols with excess aliphatic diisocyanate to form --NCO terminated prepolymer and then reacting the --NCO terminated prepolymers with sufficient hydroxy acrylate to cap between about 5% and 15% of the available --NCO sites to form addition polymerizable ethylenically unsaturated sites and a photoinitiator when light is the radiation source.
Abstract: A novel process has been developed for the molecular-weight modification of polyphosphazenes. Poly(aryloxyphosphazenes) are thermally treated in an inert atmosphere or vacuum at temperatures from 100.degree. C. to 300.degree. C. so as to yield materials having reduced molecular weights, improved processability, and enhanced thermal stability.
Type:
Grant
Filed:
January 5, 1978
Date of Patent:
January 23, 1979
Assignee:
Armstrong Cork Company
Inventors:
Ronald L. Dieck, Louis Goldfarb, Nancy D. Hann
Abstract: A flooring product is made on a paper carrier and the paper carrier is removed from the flooring just prior to the time the flooring is rolled up. The paper carrier, which is free from the flooring, is wrapped up with the roll of flooring to prevent adhesion between the flooring surfaces in the roll and to provide some physical stability to the roll of flooring when it is standing on its end.
Type:
Grant
Filed:
June 1, 1977
Date of Patent:
January 23, 1979
Assignee:
Armstrong Cork Company
Inventors:
William A. Greiner, Jr., Richard J. Evans
Abstract: There is provided a roll-on type ceiling material that has a monolithic appearance free from batten strips, rosettes, or plastic inserts. A base surface is applied and this is covered by a flexible, decorative sheet to form the ceiling covering.
Abstract: The process herein is used for achieving multilevel mechanical embossing of a sheet material having a fused or cured wear layer. An embossed pattern is provided in register with a printed design under the wear layer. A two stage embossing is carried out. In the first stage embossing, a texturing is placed on the raised areas of the finished product. The second stage embossing provides deep embossing, which would be in register with the printed design under the wear layer.
Abstract: An apparatus for forming a mineral wool fiberboard product is described in copending application, Ser. No. 780,419, filed Mar. 23, 1977. This invention constitutes an improvement thereover in that an open porous thermoplastic netting is utilized as the laminating adhesive for bonding the open mesh glass fabric to the mineral wool fiberboard. The thermoplastic netting is fed into the forming chamber immediately over the open mesh glass fabric and beneath the layer of fibers and resins being formed thereover.
Abstract: The longitudinal contraction of fibers of nylon in textile fabrics is caused by the application of a nylon textile fabric contracting agent. The agent comprises a mixture of ammonium or a metal nitrate; an acid selected from the group inorganic acid, organic carboxylic acid, sulfonic acid, and mixtures thereof; and a halo, carbocyclic aryl, carbocyclic aryloxy or alkoxy substituted aliphatic alcohol. The textile fabric is treated with the contracting agent and heated to a temperature of from about 200.degree. F. to about 400.degree. F., to initiate a longitudinal contraction of the treated portions of the nylon fabric. After removal of substantially all of the textile fabric treating agent, the textile fabric is dried, thereby completing the longitudinal contraction.
Abstract: A composite molded product comprising a pressure molded and cured product of(a) expanded perlite particles; and(b) a metal-modified urea-melamine-formaldehyde resin; optionally containing an inorganic or organic fiber with or without a filler, and a method for producing the same.
Type:
Grant
Filed:
August 6, 1976
Date of Patent:
December 5, 1978
Assignee:
Armstrong Cork Company
Inventors:
David L. Barnett, Peter A. Christie, Lewis W. Eckert
Abstract: A solar energy collector in which gas is heated comprising a substantially transparent outer member overlying a corrugated, thermally conductive absorbent transformer means separated from the outer member by a longitudinal fluid space. The corrugations of the thermally conductive absorbent transformer are disposed at an angle in the collector and the transparent outer member is separated from the peaks of the corrugations by an amount such that the flow of gas through the collector assumes a helical pattern. Efficient scrubbing of the thermally conductive absorbent transformer surface results.
Type:
Grant
Filed:
September 19, 1977
Date of Patent:
December 5, 1978
Assignee:
Armstrong Cork Company
Inventors:
Jess W. Oren, III, Eugene M. Kirchner, Charles F. Wehry, Jr.
Abstract: A fluid nozzle designed to shut off when the pressure of the fluid exiting the nozzle reaches a predetermined value, e.g., 30 psi, as set forth in OSHA regulations. The nozzle has a body having an inlet, an outlet, a passage therebetween, and a conventional valve for manually opening and closing the passage between the inlet and outlet. An apertured closure is inserted in the outlet and has a valve seat on its inner surface. A valve having a face on its one end and a passageway through the valve is positioned in the passage to slideably move between the valve seat of the apertured closure and a valve stop. A vent hole through the wall of the body is located between the conventional opening and closing valve and the valve stop.
Abstract: A process is disclosed for the catalytically-induced preparation of phosphazene polymers. Cyclic halophosphazenes are polymerized in the presence of a catalytically sufficient amount of a compound having the formula M(OR').sub.x where M is an alkali metal or alkaline earth metal, x is equal to the valence of the metal and R' is C.sub.1 to C.sub.10 linear or branched alkyl, C.sub.1 to C.sub.10 substituted linear or branched alkyl, the substituent selected from the group consisting of nitro, C.sub.1 to C.sub.10 alkyl, C.sub.1 to C.sub.10 alkoxy, C.sub.6 to C.sub.10 aryl and C.sub.6 to C.sub.10 aryloxy, or N.sub.3 P.sub.3 Cl.sub.z (OR').sub.6-z wherein R' is as defined above and z equals 0 to 5.
Abstract: Flame-retardant and low-smoke plasticized polyphosphazenes are disclosed. The plasticizers are substituted cyclotriphosphazenes and cyclotetraphosphazenes.
Abstract: A phenolic foam that is non-corrosive to metallic substrates over which it is applied is disclosed herein. The foam is prepared by hardening an intimate mixture of a conventional foamable phenolic resole resin containing a blowing agent, a hardener and a surface active agent, and sodium tetraborate.
Type:
Grant
Filed:
May 24, 1976
Date of Patent:
October 24, 1978
Assignee:
Armstrong Cork Company
Inventors:
William L. Garrett, Roy G. Grube, Wayne C. Kennedy
Abstract: A pattern is placed on a carpet backing by the use of sublimable dyes. Carpet facing is tufted into the backing. Subsequent heating with vacuum action causes the sublimable dye to move from the carpet backing to the face yarn to provide the dyed pattern on the face yarn.
Abstract: The invention is directed to a clip structure for fastening a specific type of ceiling panel to a specific type of support structure. Both the support structure and ceiling panel have flanges and the clip spans the two flanges to fasten them together.
Type:
Grant
Filed:
July 29, 1977
Date of Patent:
October 3, 1978
Assignee:
Armstrong Cork Company
Inventors:
Lewis W. Eckert, Harold W. Nikolaus, James C. Ollinger
Abstract: A method and apparatus for ready measurement of total hemispherical emissivity of a surface under ambient conditions, in situ. The apparatus, which may be readily made portable, comprises a heat sink to which is laminated a metal foil heater enclosed in a thermal insulating film. A black coating of known emissivity is applied to the exposed surface of the film and a fast-responding heat flux sensor is attached thereto. This apparatus is spaced a predetermined distance from a test surface and the enclosed air space is surrounded by a reflective skirt. A power source, such as a battery, powers the heater with a fixed current, and a suitable voltmeter is driven by the heat sensor. The method of measurement comprises equalizing the temperature of heat sink and test surface, energizing the heater and noting the steady state value of the voltage provided by the heat sensor.
Abstract: A process is disclosed for the catalytically-induced preparation of phosphazene polymers. Cyclic halophosphazenes are polymerized in the presence of a catalytically sufficient amount of a Lewis acid catalyst.
Type:
Grant
Filed:
December 6, 1976
Date of Patent:
September 26, 1978
Assignee:
Armstrong Cork Company
Inventors:
Ronald L. Dieck, Thomas B. Garrett, Alan B. Magnusson