Mtu Motoren-und Turbinen-union Muenchen, Gmbh

Mtu Motoren-und Turbinen-union Munchen Gmbh

Daimler-benz Ag

Benckiser-knapsack Gmbh

Hjs Gelenk System Gmbh

Peter Adam

Joachim Bamberg

Martin Thoma

Erwin Bayer

Horst Pillhoefer

Heinrich Walter

Ludwig Steinhauser

Albin Platz

Dietmar Kubein-Meesenburg

Hans Naegerl

Wolfgang Eichmann

Klaus Schweitzer

Lothar Reisinger

Michael Vogt

Manfred Podlech

Joachim Theusner

Horst Meyer-Spradow

Adolf Nebelung

Thomas Sedlmair

Horst Pillhofer

An artificial joint () suitable for use as an endoprosthesis for a human knee joint, having a first joint compartment () formed by a first condyle () and a first socket () and a second joint compartment () formed by a second condyle () and a second socket (). The contact surfaces (C) of the respective joint compartments () are offset in the main functional plane. To further improve the characteristics of the artificial joint (), the contact surfaces (C) of the two joint compartments () are sloped as a function of the flexion angle such that the surface normals () of the contact surfaces (C) have a common point of intersection at every flexion angle. This arrangement of the contact surfaces (C) achieves self-stabilization of the joint () both when a rotary motion or torsion and when lateral forces are introduced.

Artificial joint particularly suitable for use as an endoprosthesis for a human knee joint

A process for the manufacture of a thermo-mechanically stable thermal insulating layer, in which a ceramic thermal insulating layer is applied to a metallic component by thermal spraying and the thermal insulating layer is shot peened during and/or after its application in order to reduce sintering effects. The ceramic thermal insulating layer has a porous structure which is opened up by the formation of microscopic fissures formed near the surface of the layer by the shot peening.

Thermal insulating layer for a metallic component and its process of manufacture

A ceramic heat insulation layer applied to a metal structural part or to an intermediate adherent layer thereon, has the surfaces of its inner, open pore structure coated with a passivating ceramic material or a metal deposition material for improving the properties of the heat insulation layer.

Ceramic, heat insulation layer on metal structural part and process for

Ceramic, Heat insulation layer on metal structural part and process for

Inner and outer surfaces of structural components are aluminized by an aluminum gas diffusion process. For this purpose a gas mixture of a halogenous gas, aluminum monohalide gas, hydrogen, and negligible proportions of aluminum trihalide gas is caused to flow over the outer and inner surfaces of the component to be coated. The process is performed in a vessel in which at least two different temperature zones are maintained for keeping one or more aluminum sources at a higher temperature than the component to be coated. Especially gas turbine engine blades are protected against oxidation and corrosion by the so formed aluminum diffusion coatings on outer and inner surfaces of the blades.

Method for coating a structural component by gas diffusion

A process for vapor depositing a metallic interlayer on the surface of a metal component, for example, by sputtering and thereafter depositing an aluminum diffusion coating on the interlayer. The metallic interlayer is vapor deposited on the surface of the component in a noble gas atmosphere, more than one-half of which, in per cent by weight, is composed of noble gases which are heavier than argon. Advantageously, the noble gases can be krypton or xenon. The process can be used with particular advantage for applying protective aluminum diffusion coatings on turbine blades.

Formation of interlayers for application of aluminum diffusion coatings

Method and apparatus for coating a structural component by gas diffusion

A structural component made of a base metal composition on a nickel or cobalt basis is provided with a protective coating against oxidation, corrosion, and thermal fatigue. The protective coating and the base metal are made of chemically the same or identical material, whereby the bonding of the protective coating is increased, the tendency to crack is reduced, and the resistance to thermal fatigue is improved. The grain size of the coating is substantially smaller than the grain size of the base metal composition.

Structural component with a protective coating having a nickel or cobalt

A process for the production of a layer of hydroxyapatite (HA) on metallic and non-metallic bodies for implants is disclosed, wherein a layer of .alpha.- or .beta.-tricalcium phosphate (TCP) is applied and this is then completely converted into pure HA by reaction with water at an elevated temperature.

Hydroxylapatite coating on metal or ceramic

Structural components, especially components having complicated configurations, are endurance tested for their creep resistance or strength in a removable massive metal testing block which encloses the component being tested in the manner of a mold. The mold type testing block is made of a high heat resistant metal acting as a susceptor in an induction heating system in which the testing block is surrounded by an induction heating coil. In this system the component being tested can be heated to high, highly constant temperatures which provides a substantial improvement in the creep testing results and reduces the cost of testing.

Apparatus for creep endurance testing structural components

A process for the production of a sodium-filled valve in which the sodium is introduced into a hollow valve stem through a filling bore of relatively large diameter and which is sealed through a plug and/or usual welding. Subsequent to the closing off of the filling bore, the hollow inner space is evacuated through a passageway having a small cross-section and is thereafter sealed vacuum-tightly in a vacuum through either welding or soldering. Through the evacuation of the hollow space there is avoided any kind of oxydation of the sodium and thereby any change. Moreover, no froth or foam formation is encountered so as to facilitate the presence of an extremely constant heat transfer.

Process for the production of a sodium-filled valve

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Dachau, Germany

Peter Adam