Class 285/288.11 - Having pre-formed weld ring

Subclass of Class 285 - Pipe joints or couplings
Definition: Subject matter including placement of a pre-shaped ring
No. of patents: 31
Last issue date: 08/01/2006

Number	Title	Issue Date
6886349	Brazed aluminum heat exchanger An aluminum heat exchanger is provided. In one embodiment, the aluminum heat exchanger comprises a fin having a first aperture therethrough with a flange formed around the first aperture. The fin is made from a first alloy having a first melting point. The heat exch...	05/03/2005
6843509	Coupler for use with metal conduits A coupler for joining an aluminum conduit to a steel or stainless steel conduit and which includes a main body which is formed from a first layer of aluminum and a layer of steel or an iron-chromium alloy which are explosively welded together, and wherein the main b...	01/18/2005
6230747	Pipe connecting method and piping structure A pipe (40) having a specific length is filled with nitrogen gas (4a). From opening ends of connecting portions (42, 42) located at respective ends of the pipe (40), cross sectionally hat-shaped block plugs (50) made of brazing material are pressed into t...	05/15/2001
6161876	Elbow connection for tubular manifold for a motor vehicle air-conditioning condenser A device inserted through a tubular wall by means of a cylindrical flange surrounding a through-bore which is used to insert a tool for flaving the annular region defined by the flange around the bore on the inside of said wall, so that the device may be ...	12/19/2000
5875954	Bonded pipe and method for bonding pipes A bonded pipe produced by using the liquid phase diffusion process in which the pipe ends of pipes to be bonded are butted with an insert material lower in melting point than the pipe material against each other, wherein the thickness is increased in such...	03/02/1999
4844322	Method for replacing a section of tubing A method for replacing a damaged or defective section of a length of original piping or tubing located within a structrue such as the turbine of a jet engine wherein access to the tubing is limited, and replacing such damaged section with a new section of...	07/04/1989
4817994	Aseptic pipe joint An aseptic pipe joint for food processing pipe fittings of the type including a pair of frustoconical ferrules having radially extending surfaces, a "C" shaped metallic ring positioned between the surfaces in abutting relation therewith, a resilient O-rin...	04/04/1989
4815650	Hydraulically activated welding flange An apparatus for welding a section of pipeline onto an existing pipeline, the process including the steps of cutting away the section of damaged pipeline; providing a apparatus insertable within each end of the existing line for venting off gas within the...	03/28/1989
4728126	Weld joint The present invention relates to a weld joint for metal pipes. The object is to provide a weld joint which is easy to make and which has a clean surface inside the pipe. The ends of the pipes to be jointed are flared and a cylindrical metal sealing ring u...	03/01/1988
4693499	Pipeline for gaseous fluids and method of assembling its components A pipeline wherein one end portion of a first metallic pipe fits with annular clearance into the adjacent end portion of a second metallic pipe and the adjacent end portion has an internal groove for a radially and axially deformable ring which is biased ...	09/15/1987
4674772	Soluble pipe spacer A wafer-shaped spacer ring for a pipe and fitting. The ring is formed of liquid soluble material to allow the ring to dissolve after the pipe and fitting are welded and the pipe is flushed....	06/23/1987
4671543	Ball and socket type joint for use between adjacent sections of a fluid conduit and method of manufacturing same An improved ball and socket type joint for use in a fluid conduit and an improved method of forming such a joint are disclosed. The joint comprises ball and socket portions each provided with communicating internal passageways. The socket portion of the j...	06/09/1987
4652019	Partially consumable spacer chill ring A partially consumable spacer chill ring for welding a pair of adjacent pipe ends together, includes a non-consumable, substantially annular, base metal ring having an outer surface with an outside diameter permitting a snug fit interiorly of the pipe end...	03/24/1987
4643464	Device for connecting two pipe ends The invention relates to a device for connecting two pipe ends, having a socket, a spigot and an annular seal therebetween. These parts are clamped together by flanges of a clamp in order to close the device. While prior art sockets and spigots have been ...	02/17/1987
4634040	Process for welding pipe ends and an insulating ring therefor An improvement is provided in a known process for welding liquid-filled aligned end sections of pipe. The known process involves positioning a sleeve over the junction between the pipe ends and fillet welding the two ends of the sleeve to the pipe ends. T...	01/06/1987
4611830	Partially consumable spacer chill rings and their use in welding pipe joints A partially consumable spacer chill or welding ring includes a generally cylindrical non-consumable base metal ring having an outside diameter of such a size as to snugly fit the inside diameter of the pipe end to be welded. A circular consumable filler m...	09/16/1986
4593938	Welding ring A welding ring is made as a flat ring body, of internal diameter equal to e internal diameter of the parts to be assembled and of outer diameter in excess of the external diameter of the parts to be assembled by the mount of a peripheral edge on each face...	06/10/1986
4575611	Method of joining pipes A method of replacing a defective circumferential butt joint in a metal pipe is disclosed. An annular metal bridge ring, having a smaller wall thickness than the pipe but the same inside diameter, is positioned coaxial with the pipe in the relatively wide...	03/11/1986
4408112	Welding insert ring and method of welding therefor The method of and apparatus for welding of a pair of in-line pipes which utilizes a pair of insert rings. Initially, in the root area of the weld there is located an inner insert ring, which is welded to the pair of abutting pipes by a root welding path. ...	10/04/1983
4400019	Multilayer pipe joint The invention is directed to a multilayer pipe joint and, more particularly, to a pipe joint for effectively joining sections of pipe having an outer metal casing, an inner plastic pipe, and an annular cement grout sleeve. The joint comprises a dual mater...	08/23/1983
4346918	Pipe spacer used in welding A split ring pipe spacer used to separate a pipe from the fitting shoulder during welding. The spacer has yieldable protrusions for the purpose of maintaining proper spacing and alignment of the pipe and fitting during welding....	08/31/1982
4314677	Journal and end closure for tubular vessels A journal and end closure for a tubular vessel particularly a shell supported tubular grinding mill. The mill shell is conventional to the point of the journal. The journal and end closure are formed by a pair of spaced apart cylindrical members and a T-s...	02/09/1982
4229025	Stab-type coupling A stab-type coupling and method for connecting an end portion of a smooth wall non-metallic pipe to fittings or other pipes. The coupling is defined by a non-metallic coupling body, a generally elongated hollow insert, annular spacer rings, seal rings, a ...	10/21/1980
4161273	Tube joint and method of making same A tube joint including a male end which has a rounded inner edge having its original surface finish and a female end which is expanded to receive the male end. The male end is formed by chamfering the end outer diameter and flaring the end inner diameter ...	07/17/1979
4135739	Off-set welding ring An asymmetrical welding ring for facilitating the end to end welding of tubes having unequal inside diameters. The welding ring is provided with an arcuate inner periphery and an irregular outer periphery divided into three distinct frustoconical surfaces...	01/23/1979
4066861	Method of welding a pipe to a pipe plate A method of welding a pipe to a pipe plate conprises slipping a ring over the pipe, the adjoining surfaces of the ring being in contact with the pipe surface and with the pipe plate surface over the entire circumference, inserting the pipe end over a shor...	01/03/1978
4054978	Method for repair of valves A valve bonnet structure has an inner ring spaced slightly from the inner surface of the bonnet structure and secured along its lower edge portion to the bonnet. An angle-shaped member having a downturned leg lapping the ring is secured to the inner surfa...	10/25/1977
4054306	Tube and cylindrical surface sealing apparatus A fluid-tight sealing apparatus for sealing a tube to a cylindrical surface while subjected to axial, rotational and angular misalignments comprising a metallic, resilient sealing member on the tube having a ring portion with a curved surface for contacti...	10/18/1977
4026582	Connected part of concrete pipe This invention relates to connected parts of a long concrete pipe made by connectng some short concrete poles or concrete piles which are separately manufactured. Especially in case that a bending moment acts on an upper part of a concrete pipe having con...	05/31/1977
4019761	Connection for foam insulated pipes A pipe having an annular ring of a foam plastic material on its outer surface and a covering layer of thermoplastic material on the outer surface of the foam plastic ring. An opening between two free ends of foam plastic layer ring lying opposite each oth...	04/26/1977

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Class 285/288.11 - Having pre-formed weld ring