Tubular piston for a piston engine and method producing a tubular piston
AssigneeBrueninghaus Hydromatic GmbH of Elchingen, Germany
InventorJosef Beck
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Abstract
The invention relates to a tubular piston for a piston engine, comprising a tubular section, a collar shaped region and a ball pivot formed thereon, and an inner tube arranged in an outer tube. A cavity is at least partially formed between the outer tube and the inner tube. Said cavity is sealed from the area surrounding the hollow piston in a pressure-tight manner, by a material, especially a solder material, which is arranged in the cavity in a positively locking manner by means of heating.
Claims19
Hollow piston for a piston machine, comprising a tubular section, a collar shaped region and a joint ball, which is integrally formed on the collar shaped region, and also an inner tube arranged in an outer tube, a hollow space being formed, at least partly, between the outer tube and the inner tube,
- wherein the hollow space is closed off pressure tightly from the area surrounding the hollow piston by a material, in particular solder material, which is arranged in the hollow space and is brought into form closure with at least one wall of the hollow space by heating.
Method for producing a hollow piston for a piston machine, comprising a tubular section, a collar shaped region and a joint ball, which is integrally formed on the collar shaped region, and also an inner tube arranged in an outer tube, a hollow space being formed, at least partly, between the outer tube and the inner tube, the hollow space being closed off pressure-tightly from the area surrounding the hollow piston by a material, in particular solder material, which is arranged in the hollow space and is brought into form closure with at least one wall of the hollow space by heating, comprising the following method steps:
- production of a one0piece hollow piston
- insertion of the material, in particular solder material, near the end of the hollow piston
- rotary kneading of the collar shaped region and of the joint ball, and
- hearing of the hollow piston to cause the material, in particular solder material (15) to seep into a region of abutment and/or the collar-shaped region.
Method for producing a hollow piston for a piston machine, comprising a tubular section, a collar-shaped region and a joint ball, which is integrally formed on the collar-shaped region, and also an inner tube arranged in an outer tube, a hollow space being formed, at least partly, between the outer tube and the inner tube, the hollow space being closed off pressure-tightly from the area surrounding the hollow piston by a material, in particular solder material, which is arranged in the hollow space and is brought into form closure with at least one wall of the hollow space by heating, comprising the following method steps:
- pushing of a straight inner tube into a straight outer tube,
- introduction to two materials, in particular solder materials, near the ends of the tubes,
- rotary kneading of the ends and also of the collar-shaped region, and
- heating of the hollow piston to cause the materials, in particular solder materials, to seep into the regions of abutment and/or the collar-shaped region.
Dependencies are inferred from the claim text.