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Match Document Document Title
7600406 Apparatus for rectifying round pipe and tubing  
Apparatus for reducing the diameter, rounding or straightening of pipe or tubing by rolling comprising a plurality of cylindrical rollers arranged in a parallel-cylindrical array through which the...
7418848 High-performance and high-efficiency rolled fin tube and forming disk therefor  
Disclosed herein is a forming disk for fabricating a fin tube. The forming disk comprises a substantially circular plate having a shaft connection hole formed adjacent a center thereof for...
7159432 Device for bending profiles by thinning a wall of the profile  
In a device and in a process for bending a tube 72 , the tube 72 is guided through a bending tool 71 , which rotates around a section guide housing 81, 82 and also around a cam unit formed by...
7024899 Roll assembly for a rolling mill  
A roll shaft assembly especially for a planetary cross roll rolling mill for tubing and the like has the roll shaft and mill roll connected by a conical centering arrangement and a screw,...
6968719 Apparatus and methods for forming internally and externally textured tubing  
A machine may produce a tube having textured internal and external surfaces in a single operation. Inner and outer knurling tools may form the textured surfaces. The texturing of the internal and...
6898957 Method of reducing slot width in slotted tubular liners  
A method of reducing slot width in slotted tubular liners. A slotted tubular liner ( 1 ) is provided having an interior surface ( 3 ), an exterior surface ( 2 ) and a plurality of slots ( 4 )...
6792781 Arrangement for inclined rolling of tube-shaped or bar shaped rolling products  
An arrangement for inclined rolling of tube-shaped or bar-shaped rolling products comprises at least two rollers adapted to receive therebetween a rolling product so as to determine a longitudinal...
6666060 Roller head for a planetary rolling mill  
A roller head for a planetary rolling arrangement, said roller head comprising a housing, inside which housing there is rotatably arranged a hollow outer axis and means for rotating said outer...
6666058 Method and device for manufacturing a surface-structured pipe conduit element  
A method for producing a, in particular thin-walled, pipe conduit element with a surface structure reinforcing the pipe conduit element is proposed wherein the pipe conduit element continuously...
6619089 Tube corrugating apparatus and method  
A method and apparatus for forming annularly-corrugated tubes and cables utilizing a multiple gear corrugating head which is rotated about the tube or cable, to be corrugated as the tube or cable...
6550300 Apparatus for producing annularly corrugated metal tubes  
An apparatus for producing annularly corrugated metal tubes, particularly the outer conductor of coaxial high-frequency cables, using at least one pressure roller revolving around a plain tube. The...
6497129 Method for rolling tube blanks in a planetary skew rolling mill  
A method and device for rolling tube blanks in a planetary skew rolling mill continuously feeds tubular blanks which are to be rolled into the rolling gap end to end. A first tube blank is located...
6073473 Device for corrugating tubes  
In an apparatus for continuous corrugation of walls of tubes or tubular elements, especially cable components, at least one corrugating wheel, rotatable about its own axis, also rotates about the...
5685187 Arrangement for inclined rolling of tube- and bar-shaped rolling articles  
An arrangement for inclined rolling of tube-and bar-shaped rolling articles has two or more driven rollers rotatable about a longitudinal axis of a rolling article and supported in or on a rotor...
5524467 Method for the inner profiling of tubes or pipes  
The invention relates to a method for the better utilization of the working width of a profiling stone in the inner profiling of heat exchanger pipes. The press on width of the revolving roller...
5522124 Roller burnishing apparatus having directly driven, coaxially disposed burnishing head assembly  
A machine tool apparatus having a burnishing head assembly coupled directly to a hollow, tubular output shaft of the motor of the apparatus. The tubular output shaft is coupled to the armature of...
4924568 Burnishing device for external surfaces of workpieces having circular sectional contours  
A roller burnishing device for sizing and/or finishing the external surface of a workpiece having a circular sectional contour by causing a relative rotation between the workpiece and a plurality...
4876870 Method for manufacturing tubes  
The method of the invention relates to the manufacturing of tubes of a continuously cast or the like billet by means of cold working, wherein the temperature of the material rises to the...
4876869 Inner grooving process for a metallic tube  
An inner grooving process for the tube expanding rolling type by which inner grooves such as wide width grooves or deep grooves which cannot normally be formed readily can be formed with a high...
4794775 Method of producing a heat transfer tube for single-phase flow  
A method for producing a heat transfer tube for single-phase flow having rows of discontinuous projections formed on the inner surface thereof along one or more spiral curves. Each projection has a...
4776195 Apparatus for manufacturing core wire for optical fibers  
An apparatus for manufacturing a core wire for use in laying optical fibers over a long distance produces a plurality of continuous corrugated deep grooves in a wire that are capable of holding...
4736607 Apparatus for bias rolling of strip metal  
A process and apparatus for bias rolling of strip metal is provided wherein the strip stock is formed cylindrically and passed through a rolling station wherein roll passes formed by small diameter...
4712407 Apparatus for working surface of metal pipe  
An apparatus for working a surface of a metal pipe is provided. The apparatus comprises a drawing unit for drawing a metal pipe to reduce a diameter thereof, and a working assembly for working the...
4624122 Machine for the manufacture of tubes deformed to provide a helicoidal profile for heat exchangers and similar applications  
For manufacturing tubes of the "corrugated" type, i.e. comprising at least one deformation of helicoidal profile, the smooth tube (28) is displaced axially inside a fixed sheath (7) about which...
4602493 Rolling mill for reducing the thickness of the wall of a tube  
A method of reducing the thickness of the wall of a tube wherein in the zone of the reduction of the wall thickness, on the internal surface of the tube the plug of a mandrel exerts a pressure...
4587820 Roll head for a planetary crossrolling mill  
A roll head for a planetary crossrolling mill in which the roll shaft bearing the tapered roll is mounted at one end close to the tapered roll in a radial bearing and an axial bearing while the...
4579289 Skew roller for a planetary type skew rolling mill  
A skew rolling mill is equipped with a plurality of skew or inclined rollers each of which is constructed of a number of roller segments (1', 2) which are interconnected in a form-locking, force...
4566301 Method and means of manufacturing spirally fluted tubes  
A method and apparatus for the manufacture of spirally fluted tubes and which comprises a rotatable die for receiving the tube longitudinally therethrough during the forming operation for...
4512177 Method of manufacturing metallic materials having a circular cross section  
The invention relates to a method of manufacturing solid metallic materials having a circular cross section by employing a rotary mill. A three or four roll cross-type rotary mill is employed, with...
4501134 Rolling mill plants  
A rolling mill plant has a planetary skew rolling mill and a reducing or sizing rolling line disposed at a short distance therebeyond for the purpose of manufacturing tubes. In order to avoid axial...
4480454 Skew-rolling mill for reducing solid and hollow cross-sections  
A skew-rolling mill for reducing solid or hollow cross-sections, in which a roll carrier and a first hollow shaft rotatably mounted therein and allowing passage of the rolled stock are supported...
4457152 Apparatus for changing the tapered rolls of a skew rolling mill  
The apparatus for changing the rolls (6) of a skew rolling mill comprises a roll-change carriage (14) movable along the direction of feed of material (10) being rolled. A carrier (11) is mounted on...
4425696 Method of manufacturing a high performance heat transfer tube  
A method of making a new high performance heat transfer tube for use in an evaporator of a refrigeration system is disclosed. According to this novel method, a grooved mandrel is placed inside an...
4395895 Skew rolling mill for reducing solid and hollow cross-sections  
A skew rolling mill has three taper rolls, inclined at an angle to the axis of the rolled stock and offset relative to each other by 120°. Each taper roll is driven through a bevel gear pair,...
4391114 Shear forming apparatus for elongated non-rotating metal tubes  
A supply of elongated metal tubes are successively transferred laterally to and from a reducing position aligned with the axis of a hollow spindle, and one end of each tube is clamped by a gripper...
4353234 Heat transfer surface and method of manufacture  
A heat transfer surface for nucleate boiling of liquids is formed on the outer surface of a heat exchanger tube. Helical ridges having two fins each encase the tube. A fin at each ridge is angled...
4336702 Method of and apparatus for making spiral tubes  
A method of and apparatus for forming spirally-shaped indentations in tubular products. An internal shaft is formed with a spirally-shaped female die and an outside die consists of a single metal...
4299106 Finned tubing  
The invention provides for a method of and an apparatus for manufacturing finned tubing from tubular metal fin stock in which the fin stock is in axially continuous form. There are provided at...
4294306 Withdrawal roll unit for horizontal continuous billet casting machines  
The present invention is used in continuous casting machines where a billet is withdrawn from a mould and simultaneously rotated about its own axis. The invention provides a withdrawal roll unit...
4202195 Skew rolling mill roller  
The tapered working roller of a skew rolling mill is provided with a deformation surface in the form of a paraboloid and a smoothing surface at the end of smaller cross-section in the form of a...
4202194 Inclined rolling stand  
An inclined rolling stand for reducing a starting material to a pipe or rod, which includes a roll carrier adapted to be driven and to permit a central passage of the material to be rolled. The...
4194381 Device for the cold working of heat exchanger tubing for the attachment of spiral fins  
A device for the cold rolling of narrow flat lands on the cylindrical surface of heat exchanger tubing, just prior to the winding onto the tubing of one or more metal strips for the production of...
4179911 Y and T-finned tubes and methods and apparatus for their making  
This invention concerns finned tubes for use in heat exchanging whereby the fins have a generally T or Y shape. There is disclosed process and apparatus for making these Y and T-finned tubes...
4178785 Skew rolling mill  
A skew rolling mill is provided with a deforming smoothing means in contact with the stock immediately beyond the working rollers to remove markings. The deforming means is supported in a support...
4161872 Rolling mills  
There is disclosed a rolling mill comprising a pair of generally discus shaped rolling heads affording opposed rolling surfaces, the rolling surface of each head being provided by its surfaces...
4154076 Roller for skew rolling mill  
A working roller for a skew rolling mill which has the shape of a truncated cone is provided with internal passages for circulating a heat transfer medium therethrough to thereby control the...
4114431 Method of forming tubular metal products  
A method of fabricating seamless tubes of malleable metal is provided comprising supporting an annular work piece of greater wall thickness than the required thickness of the completed tube within...
4106352 Wire pointing machine  
The wire pointing machine comprises two grooved rolls which are supported in a gear ring pivotable about a horizontal axis. Teeth are provided on end trunnions of the grooved rolls which mesh with...
4043161 Apparatus for forming corrugations of "zero" pitch in coaxial cable  
An apparatus for forming corrugations of "zero" pitch in coaxial cable includes a takeup drum which pulls the coaxial cable through a three jaw chuck or head at a speed related to the rotation of...
4037446 Method of producing bright steel from rolled steel wire  
Method of producing bright steel from rolled steel wire, in which the diameter of the rolled wire is first reduced by passing the same through a calibrating device, preferably a reducing mill,...
Matches 1 - 50 out of 100 1 2 >