Phoenix Rubber Gumiipari Kft.

Contitech Rubber Industrial Gumiipari Kft.

Richter Gedeon Vegyeszeti Gyar Rt

Contitech Usa, Inc.

Taurus Gumiipari Vallalat

Eddelbuttel + Schneider Gmbh

Contitech Rubber Industrial Kft.

Phoenix Rubber Industrial Ltd.

Csepeli Femmu

Tibor Nagy

Istvan Grepaly

Jeno Kotai

Sandor Antal

Elemer Lantos

Tamás Katona

Andras Boros

Imre Domonkos

Gyula Beteri

Bela Stefko

Istvan Gebhardt

Laszlo Palotas

Karoly Zalai

Peter Gorgenyi

Denes Mathe

Ferenc Kovacs

Nandor Pfisztner

Imre Füstös

Gyorgy Gyongyosi

Mihaly Stefan

Ferenc Koszo

Sandor Daroczi

Urbán Mónika Bereczkné

Arpad Hadhazy

Gyula Csokas

Tamas Mezo

Gergely Szekely

Zsolt Kovacs

Miklosne Lengyel

Laszlo Nacsa

Jozsef Kiraly

Gyorgy Toth

Sandor Gelencser

Burghard Brink

Laszio Nacsa

Elemér Lantos

Gyula Bétéri

Lajos Kis

Zalán Kádár

István Grépály

Györgyi Szöllösi

A rubber hose includes a distinctly colored inner wear indicator integrated into its liner, wherein a distance b of the inner wear indicator from the inner surface of the liner is less than 40% of the liner's thickness v, and height h of the wear indicator, measured perpendicularly to a longitudinal axis of the hose, falls between 1% to 90% of liner thickness v, or even from 10% to 40% of the liner thickness v. The inner wear indicator may have concentric sectional surface area of the inner wear indicator may even gradually decrease in the radial direction as a function of distance from the longitudinal axis. The rubber hose may be connected at one end to a plunger pump and connected at a second to a common manifold, in an oilfield pump system, or used in any hose application in an oilfield fluid pump system.

Early life erosion tracking layer for high pressure fracking hoses

A high-pressure, large-bore bonded flexible rubber pipe resistant to aggressive chemicals and gases, particularly for conveying gas or oil, the flexible pipe having a liner made of poly(vinylidene-fluoride) homopolymer or copolymer wherein a hydrogenated nitrile rubber-based, peroxide-vulcanized rubber compoundis bonded to the poly(vinylidene-fluoride) liner, which has a Mooney 05, 150&#xb0; C. scorch time of at least 10 minutes. Further, a method for manufacturing such hoses, the method including vulcanization performed at a temperature of at least 160&#xb0; C.

Chemical and gas-resistant, high-pressure, large-bore bonded flexible rubber pipe and method for producing the same

The invention relates to a bonded high-pressure rubber hose comprising a flexible internal stripwound tube (), a liquid and gas tight liner () made from rubber or plastic, reinforcing plies embedded in rubber, and in specific cases an adhesively bonded coupling body (), the lower reinforcing ply or plies being disposed at an angle smaller than the so-called angle of equilibrium (35.26&#xb0;). The invention is characterized by that in addition to the primary liner the hose () comprises a liquid and gas tight secondary liner () disposed above the small angle reinforcing ply or plies (), and that the following inequality holds for the angle of lay of the lowest reinforcing ply () of the hose: &#x2022;where &#x2022;ais the angle of lay of the lowest small angle reinforcing ply () &#x2022;D s is the outside diameter of the internal stripwound tube () &#x2022;Dis the mean diameter of the lowest small angle reinforcing ply ().

Bonded high-pressure rubber hose, particularly for conveying gaseous media

The object of the invention is a method for building hoses reinforced with spirally laid fibers, where the hose under construction () undergoes both rotation and advancing motion relative to the laying head (), and where the reinforcing fibers are unwound from drums (). The drums () are rotated about two axes, the first axis being the principal axis of the drums (A) and the second axis (B) being nearly parallel with the direction in which the fibers are unwound, where the direction of rotation of the drums () about the second axis (B) is the same as the direction in which the hose under construction () is rotated. The apparatus for carrying out the method comprises a laying head () and a drum support platform (), where the hose under construction () undergoes both rotation and advancing motion relative to the laying head (), and where the reinforcing fibers () are unwound from drums () through a circular fiber guide () The further object of the invention is a method for building hoses reinforced with spirally laid fibers, wherein the reinforcing fibers () are laid on the hose surface through a rotating self-adjusting circular fiber guide () arranged substantially coaxially with the hose. The invention also relates to an apparatus for carrying out the above method.

Method and apparatus for manufacturing fibre-reinforced hoses

A long-length hose spliced from two or more hoses containing an inner sealing layer, at least two spirally laid reinforcing plies, and a cover. A liner forming the inner sealing layer is formed by leak-tight splicing of liners of hoses to be spliced and the reinforcing plies are embedded into filling/adhesive material inside of a rigid outer sleeve, at the location of the splicing.

Spliced long-length hose and method for splicing hoses

The invention relates to a hose that comprises at least one inner layer () produced from an elastomer material, an embedded reinforcement carcass produced from a textile and/or metal material, an outer layer produced from an elastomer material and a coupling having a flange section inside the hose end. The inventive hose is characterized in that the coupling comprises a fitting, a supporting flange and at least one annular lamina. A first reinforcement carcass, consisting of at least one reinforcement layer, extends along the entire inside of the fitting and changes in the flange area from the axial to the radial direction of extension. The radial area of the first reinforcement carcass is mounted between the supporting flange and the annular lamina(e). A second reinforcement carcass, likewise consisting of at least one reinforcement layer, partially or completely holds the outside of the fitting, especially by way of fastening means. A filler material produced from an elastomer material, in the area of the fitting, fills the space between the first and the second reinforcement carcass. The coupling is integrated into the hose in such a manner that all hose components associated with the coupling give a material-fit hose/coupling system. The invention also relates to a method for producing a hose of the above-described type.

Hose with integral coupling and method for producing the same

The present invention relates to a high-pressure hose structure comprising several layers of reinforcing plies where the reinforcing fibers are spirally laid. The hose structure according to the invention is characterized by the odd number of its reinforcing plies.

High-pressure hose comprising several layers of reinforcing plies

The invention relates to a hose comprising a steel coupling (), in which the structural elements of the hose, namely the reinforcing plies (), liner (), carcass (), and cover () are bonded. The main feature of the invention is that the reinforcing plies () of the hose, which are partially or entirely bonded with rubber, are embedded in the adhesive resin layer in the coupling device () assembled to the vulcanized hose.

High-pressure hose with adhesively bonded hose coupling which can be post-assembled

A rubber hose provided with an outer metal armouring and a vulcanised and/or adhesively bonded coupling, in particular a flexible rubber hose provided with reinforcing plies, wherein the armouring is constituted by a flexible metal stripwound metalpipe with an interlocked profile ( ) which is spliced at least from tow sections and fits with a minimal gap on the hose below.

Rubber hose with outer armouring and process of producing the same

Acaricidal compositions and process for preparing same

Reinforced flexible hose

A relatively simple and rapid process for the production of high-grade copper from an inexpensive starting material such as blister copper or copper scraps is described. The starting material is conventionally smelted and oxidized, after which the charge is subjected to a slagging operation to obtain a pre-refined copper bath. After the slagging step, an artificial slag cover is formed on the pre-refined copper bath using a mixture of (1) an oxide of at least one element selected from the group consisting of silicon, phosphorous and boron, and (2) an oxide of at least one element selected from the group consisting of titanium, aluminum, calcium, strontium, barium, magnesium, sodium, potassium and lithium. At least two of such elements are then fed to the bath through the slag cover as alloying components. After such resulting bath is mixed for at least 30 seconds and is left standing for an additional 15 minutes, the slag cover is removed. A conventional reduction step may then be accomplished to complete the refining process.

Process for the removal of alloying impurities in a slag-covered copper

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Budapest, Hungary

Tibor Nagy