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7415765 |
Flange coupling and manufacturing method for the same
An object of the present invention is to provide a flange coupling in which the height of a horizontal portion of an L-shaped pipe is made as small as possible. The present invention provides a...
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7328510 |
Elbow rotator
An elbow rotator apparatus for rotating an integrally formed section of an elbow workpiece includes a pair of gripping arms which are selectively positionable in a first position displaced from the...
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7254980 |
Gas supply tube and method of making same
A metal gas-feed tube for a head air bag automotive vehicle has a sleeve formed on a bent end thereof to fit onto a connecting fitting of a gas generator. That sleeve is formed in part from an...
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7096585 |
Apparatus and method for automated production of adjustable duct member
An apparatus and method for forming a duct member having a plurality of adjustable sections which are rotatable relative to one another. The apparatus and method causes relative rotation between...
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6832623 |
Gas meter valve and method
Disclosed is a gas meter valve for connection to an outlet of a gas meter and a method for its use. The gas meter valve comprises a valve inlet coupleable to the meter outlet, a valve outlet...
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6643930 |
Method and apparatus for producing end flange member for cylindrical duct
A method for producing a cylindrical flange for the end of an air duct is produced by compressing a panel by differing amounts to cause the panel to take on an arcuate cylindrical shape.
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6591650 |
High-pressure bulge-forming apparatus
A high-pressure bulge-forming apparatus has a multipart die having a cavity adapted to receive a hollow workpiece and having ends oppositely open along an axis. Respective actuators aligned with...
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6382679 |
Meter loop frame assembly
A meter loop frame assembly for connecting a gas meter to a gas supply line and a gas service line. The meter loop frame assembly includes a gas inlet conduit, a gas outlet conduit, and a brace....
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5979202 |
Method and apparatus for making pipe line steel grooved-end fittings
A method for making a grooved-end pipe fitting from standard pipe includes the steps of bending length of pipe on a press mandrel to form a curved pipe segment with an oval cross section and...
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5775736 |
Plastic pipe fittings
A reinforced plastic pipe fitting is made by using interference fit techniques to apply an outer pipe over a straight section of inner pipe. Appropriate sections of the outer pipe are then cutout....
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5765285 |
Method of bending a rigid thermoplastic pipe
The present invention relates to a method of forming a sharp small radius bend in a rigid thermoplastic pipe having a close fitting metal sleeve without kinking or cracking in the thermoplastic at...
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5625948 |
Method for producing a pipe and apparatus for the same
According to the present invention, in the first process, a pipe end of a long pipe is bent with a radius of curvature which is larger than a minimum radius of curvature to form a large R portion....
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5615481 |
Method and apparatus for the production of circumferentially compressible pipe fittings
To form a pipe fitting (90) having a body (92) formed with at least one outer bulge (93) defining an inner circumferential groove (93a), in which a sealing ring (93b) can be located, so that the...
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5473815 |
Method for producing a connector for fluid pipe elements
A kit for producing a non-straight connector for fluid pipe elements comprises loose sleeve couplings and at least one flat blank which has been given such a shape and such dimensions that, after...
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5257825 |
Barb and swivel spout elbow fittings
An elbow fitting of selected member configurations and comprised of two members separately machined utilizing bar stock exterior form and one of which is cross drilled for assembly with the other...
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5189790 |
Method of fabricating a double walled pipe elbow
A double walled pipe elbow with an intermediate space between an inner pipe and an outer pipe is formed by joining the ends of a straight inner pipe and a straight outer pipe. The two pipes are...
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5014424 |
Method of making a curved pipe
A bent pipe is made of a metal strip having one edge in a straight line and the other edge in a curved line by winding it helically. A double fold and a single fold are formed along the straight...
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4998337 |
Method for the permanent mutual connection of already finished metal tubes
Method for the permanent mutual connection of the ends of at least two already finished metal tubes (1,2,3), consisting in placing the ends of said tubes in a mould, particularly an injection...
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4991293 |
Means for providing very small bend radii in the tube-like structures
The method disclosed allows the bending of tubular structures with much smaller radius bends than is normally acceptable for the diameter of the tubing section that is being bent. The method is...
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4694547 |
One-piece metal covering for insulated pipe bends
An improved one-piece metal jacket for insulated pipe elbows, bends and/or turns having a central metal spine spaced apart along which a plurality of opposed pairs of metal fingers extend...
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4489585 |
Production of tubular members
The invention provides an arrangement for forming an elbow in a length of pipe comprising two internal die pins each mounted for rotation, as limbs of cranked assemblies, about the same axis, the...
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4400863 |
Method of making a rigid fiberglass duct having an integral bendable elbow
A rigid, molded fiberglass duct having an integral bendable elbow comprised of two sections of cured fiberglass securely bonded to a corrugated metal-foil sleeve. The method of manufacturing the...
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4346740 |
Pipe elbow insulator and protective jacket therefor
An insulator for pipe elbows and other similar fittings, comprises an insulative insert encasing the pipe elbow, and a protective jacket positioned about the insert. The protective jacket includes...
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4106797 |
Reinforced fitting construction
In forming a reinforced fitting, an inner shell is first formed of alternate layers of glass filaments arranged transversely and parallel to the central axis of the tubular fitting portion of which...
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4106322 |
Press for pressing pipe fittings
A press with crossheads interconnected by vertical pillars, at least one of said crossheads moving relative to the stationary crosshead which carries a sliding table with the lower die, the upper...
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3979809 |
Pipe elbow and method of making same
The present pipe elbow includes at least two straight pipe sections joined together along a Y-seam, for example by welding. The Y-configuration of the seam is such, that the three limbs thereof all...
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3977706 |
Pipe elbow
A pipe elbow or bend has a pair of adjacent straight pipe sections joined together on one side of a center line of each pipe section, and a wedge shaped insert of a segment of pipe of the same...
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3869776 |
Method of fabricating curved fittings and device for effecting same
The present invention enables a manufacture of thickwalled fittings subjected to the effects of high temperatures, pressures and (or) aggressive media. Fittings manufactured according to the...
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3848308 |
STOVE PIPE ELBOW
A swivel type stove pipe elbow having adjacent ungular sections joined end to end by interlocking slip joint means with each section having an axial lock seam extending to but not through the slip...
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3833985 |
METHOD FOR MAKING CURVED TUBES
A method of forming a curved tube. The method includes a first step of deforming a pair of sheets to form a pair of elongated semicylinders, each having opposed cheek regions extending...
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3815394 |
MACHINE AND METHOD FOR FORMING TUBULAR ADJUSTABLE ELBOWS
A machine for forming tubular adjustable elbows has a frame on which are mounted split die shells opened and closed by a hydraulic jack and carrying split die rings having elliptical grooves....
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3670553 |
TUBE BENDING MACHINE
This tube bending machine includes a base housing having an end aperture adapted to receive a hollow, rectangular tube. An inner die element is spaced from the margin of the aperture so as to be...
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3524238 |
METHOD OF FABRICATING A TUYERE ELBOW
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3501939 |
APPARATUS FOR AND METHOD OF FORMING LONG TANGENT ELBOWS
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3490137 |
ELBOW FORMING METHODS AND MACHINES
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3488766 |
METHOD OF CASTING ELBOWS
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3453716 |
METHOD OF MANUFACTURING PIPE SECTIONS FOR THE TRANSPORTATION OF CRYOGENIC LIQUIDS
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3452583 |
PIPE BENDING PRESS
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3412591 |
Press for elbows and the like
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3354681 |
Tube forming means and method
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3340713 |
Spin forming tubular elbows
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3335485 |
Method for making elbows
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3303680 |
Method and means for forming fittings
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3247581 |
Method of forming a conduit bend
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3243873 |
Tube bending
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3230754 |
Means for forming tube fittings
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3222777 |
Method for forming a miter joint for pipe insulation
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3220098 |
Method and means for forming tubular fittings with solder rings
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3110341 |
Method and apparatus for making elbows by forcing tubular stock through a die
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3095613 |
Method and means for the production of hollow bent articles of plastic material
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