Metal Base Patents (Class 427/239)
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Patent number: 4022935Abstract: This specification describes a process and apparatus for closing leaks and spraying a sealant composition to interior walls of an underground gasoline tank such as is used in retail gasoline service stations. A gas tank suspected of leaks is emptied of stored gas and purged with compressor air applied thru a valve control and pipe conduit threadly inserted in the conventional fill pipe of the tank. The pipe conduit includes a means defining an aperture at the lower extremity of the conduit which extends into the tank interior. An explosion safety level meter is attached to the pipe conduit for providing a humanly detectable signal of the environment within the tank. An excavation enables a craftsperson to cut an access port through the tank wall for entering the tank interior, cleaning-up residue, sandblasting the interior walls, and spraying a sealant composition of thixotropic polyester resin and a catalyst onto the sandblasted walls.Type: GrantFiled: March 12, 1975Date of Patent: May 10, 1977Inventors: Paul W. Kinney, Carl Walter Kirk
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Patent number: 4016341Abstract: Vinyl chloride monomer, or a mixture thereof with a copolymerizable monomer or monomers, is bulkpolymerized so that the deposition of polymer scale on the inner walls of the polymerization vessel and other surfaces in contact with the monomer or monomers can be greatly reduced by coating them with phosphoric esters, polyphosphoric esters or their alkali metal salts before the polymerization is commenced. Clean-up operations following each polymerization run are much simplified.Type: GrantFiled: October 23, 1975Date of Patent: April 5, 1977Assignee: Shin-Etsu Chemical Company LimitedInventors: Kinya Ogawa, Kazuhiko Kurimoto, Yoshitsugu Eguchi, Satoshi Kuwata
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Patent number: 4009302Abstract: A burner assembly in which various elements are joined in a manner which ensures gastight integrity of the assembly. A porcelain-coated base plate is formed of a pair of overlying steel sheets with integral embossments defining air-gas ducts to burner heads mounted on the base plate and defining ignition tubes for conducting a flame from a pilot housing to the burner heads. The air-gas ducts are sealed by establishing a pressurized flow of a slurry of ceramic frit therethrough, which is effective to coat the full interior of the ducts and close any crevices formed between the sheets. The burner head elements are arranged to provide metal-to-metal sealing engagement with peripheral edges of apertures in the base plate sheets which are characteristically free of porcelain enamel coating. An annular embossment on one of the sheets is preloaded by deflecting it toward the other sheet during assembly of the burner head elements.Type: GrantFiled: June 6, 1975Date of Patent: February 22, 1977Assignee: Athens Stove Works, Inc.Inventors: William P. Biddle, John J. Tacker
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Patent number: 4004055Abstract: A method of inhibiting stress cracking of stainless steel exposed to a chloride-ion containing fluid environment which comprises coating the surface of the stainless steel with at least a trace amount of metallic mercury. The invention also contemplates the mercury/stainless steel amalgam.Type: GrantFiled: April 21, 1975Date of Patent: January 18, 1977Inventors: Daniel N. Hess, Ramon A. Bannister
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Patent number: 3995075Abstract: Methods and apparatus for coating the interior side seam of can bodies. The can bodies proceed down a line in serial order with end toward end and uniformly spaced from each other down the line extending from a can body side seaming machine. An airless spray coating is shot into each can body from the front and the rear to leave a coating of plastic along the interior side seam of a soldered can body.Type: GrantFiled: April 18, 1974Date of Patent: November 30, 1976Assignee: Continental Can Company, Inc.Inventors: Larry V. Cernauskas, Harry B. Foss
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Patent number: 3995074Abstract: A method is provided for the continuous manufacture of self-locking internally threaded fasteners having a locking body or patch comprised of resilient thermoplastic material, applied to the fastener in powder form. A support member having a plurality of cavities for receiving said fasteners, and a nozzle associated with each of said cavities, is moved along a path through a plurality of locations wherein the fastener is deposited at a cavity aligned with a respective nozzle at a first location, material is forced through the nozzle onto the fastener at a second location, the fasteners are removed from the respective support at a third location, and the nozzles are purged of material at a fourth location prior to the initiation of a subsequent sequence of operations by the apparatus.Type: GrantFiled: April 28, 1975Date of Patent: November 30, 1976Assignee: USM CorporationInventors: Richard J. Duffy, Richard M. Elliott, Philip J. Rodden
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Patent number: 3994392Abstract: A container for a solution containing heteropolyacid ions, at least that surface of the container which makes contact with the solution containing heteropolyacid ions selected from the group consisting of silicotungstic acid, borotungstic acid, phosphotungstic acid, silicomolybdic acid and phosphomolybdic acid and being made of an alloy comprising 2 to 7% by weight of nickel, 19 to 27% by weight of chromium, not more than 0.5% by weight of carbon and the remainder being iron and minor elements.Type: GrantFiled: September 11, 1975Date of Patent: November 30, 1976Assignee: Tokuyama Soda Kabushiki KaishaInventors: Yoshihisa Kajiyama, Takao Tomita, Eiichi Wataki
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Patent number: 3988514Abstract: A self-cleaning catalytic coating for cooking oven walls comprises a mutually sintered matrix of hard catalyst particles and binder particles.The coating is preferably made by forming large hard catalyst particles, such as compressed pellets, milling them to the required size range, typically averaging above 2 microns, then incorporating them with a binder and applying the mixture to a substrate.Type: GrantFiled: November 21, 1973Date of Patent: October 26, 1976Assignee: Imperial Chemical Industries LimitedInventors: Patrick John Denny, Donald Anderson Crooks
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Patent number: 3982050Abstract: This invention relates to a method for coating inner faces of metal pipes of a small diameter which comprises feeding a stream of a powdery resin at a rate of 2 to 10 m/sec into a metal pipe of a small diameter preheated at a temperature higher by 20.degree. to 70.degree.C. than the melting or softening point of said powdery resin so that the concentration of said powdery resin or a mixture of said powdery resin and a carrier is 5 to 40% by volume.Type: GrantFiled: May 16, 1974Date of Patent: September 21, 1976Assignee: Dai Nippon Co., Ltd.Inventors: Haruhiro Kato, Tsunehiko Toyoda, Hiroyuki Tanabe
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Patent number: 3978803Abstract: A steel sheet having a Ni or Cu base plating layer and a Sn upper plating layer characterized by the absence of any alloy layer intervening therebetween is subjected to an ironing operation with the thickness of the plating being relatively small. The internal surface of the can thus formed is provided with an organic coating for packing foodstuffs including effervescent beverages.Type: GrantFiled: July 15, 1974Date of Patent: September 7, 1976Assignee: Nippon Steel CorporationInventors: Hidejiro Asano, Yashichi Oyagi
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Patent number: 3974306Abstract: A method for coating the inner surface of a metal pipe having an inner diameter of about 1 to 15 cm, which comprises feeding from one end of said metal pipe dry particles of a coating composition into the interior of the metal pipe preheated at a temperature of from a softening point of said coating composition to below a melting point thereof, sucking air at the same time from the other end of the metal pipe so as to form an air stream carrying the particles and flowing in the interior of the pipe at a flow rate of about 4 to 20 m/sec and to allow the particles to deposit on the inner surface of the pipe, and fusing the deposited particles at a reduced pressure of 10 to about 100 mm Hg to form a continuous film on the inner surface of the pipe.Type: GrantFiled: October 4, 1973Date of Patent: August 10, 1976Assignee: Kansai Paint Company, Ltd.Inventors: Keizo Inamura, Tadayoshi Tatsuno, Toshio Okoshi
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Patent number: 3968311Abstract: Metal surfaces are coated with an aqueous dispersion containing a water dispersible carboxylic acid containing resin and aliphatic polyamine.Type: GrantFiled: September 8, 1975Date of Patent: July 6, 1976Assignee: Continental Can Company, Inc.Inventors: Ihab M. Hekal, Raymond G. Chelton
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Patent number: 3966691Abstract: A linear conjugated diene of 4 to 8 carbon atoms or a mixture of such conjugated dienes or a mixture of such a conjugated diene and a vinyl aromatic monomer is polymerized in a monomer-starved process to yield homopolymers of copolymers of low molecular weight containing as low as 35 and up to 90 or 95% or more of microcyclic structures, if properly catalyzed and depending upon the temperature and other conditions of the reaction. These microcylic structures are defined as microcyclic rings of molecules containing 6 to 18 or more alkylene units. These cyclic structures are produced by the monomer-starved process which causes the bond between the carbon and the metal to bite back on itself.Type: GrantFiled: February 19, 1974Date of Patent: June 29, 1976Assignee: The Firestone Tire & Rubber CompanyInventor: Adel Farhan Halasa
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Patent number: 3961098Abstract: An article is provided with improved resistance to hot corrosion through a coating on a metal surface based on an element selected from Fe, Co and Ni, the coating comprising a filled matrix bonded by interdiffusion with the substrate. The matrix is applied by impinging on the substrate metal surface a plurality of heated metallic particles, such as by plasma spraying. The coating includes a filler metal of aluminum and preferably an alloy of aluminum and at least one other element, for example Cr, deposited on and interdiffused with the matrix, such as through a halide vapor deposition process employing a mixture of aluminum powder and other powders. As a result of application of the filler metal, there is provided from the matrix a coating layer of an alloy including an average of about 8-20 weight percent aluminum, the application process resulting in substantial recrystallization of the matrix.Type: GrantFiled: April 23, 1973Date of Patent: June 1, 1976Assignee: General Electric CompanyInventor: Irwin I. Bessen
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Patent number: 3958595Abstract: A valve, such as a butterfly valve having an offset closure vane and a thru shaft for operating the vane in the flow passage of the body, has all exposed and/or potentially vulnerable metal surfaces encapsulated in a corrosion resistant polymeric plastic coating. By extending the coating uninterrupted from the flow passage through the shaft bore and sizing the bore coating to within controlled tolerances, overall corrosion protection of the valve is substantially enhanced while enabling the coating per se to function as a bearing surface for the operator shaft.Type: GrantFiled: November 22, 1974Date of Patent: May 25, 1976Assignee: Dresser Industries, Inc.Inventors: Rene J. Al, Ralph E. Henry
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Patent number: 3959063Abstract: A method of protecting a surface from a heat source by adhering a refractory heat-insulating material to the surface using an adhesive consisting essentially of 20 - 90% by weight aqueous alkali metal silicate solution 10 - 80% by weight of a powdered metal and up to 15% by weight of a fibrous refractory material.Type: GrantFiled: October 1, 1973Date of Patent: May 25, 1976Assignee: Foseco International LimitedInventor: Peter Frederick Hawthorne
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Patent number: 3956533Abstract: Liquid sealant is applied to threaded parts that are to be connected by screwing or fitting together in a gas- or liquid-tight manner in a uniformly thick coating and the coating allowed to harden, so that the parts may be stored indefinitely before use. The coating is applied by an application tool which has a similar threaded shape to the part to which the coating is to be applied and which is provided with outflow openings in its surface.Type: GrantFiled: September 26, 1973Date of Patent: May 11, 1976Assignee: Georg Fischer AktiengesellschaftInventors: Gunter Weber, Reinhold Speck, Stefan Forberger, Josef Jusko