Tubular piston for a piston engine and method producing a...

Details Tubular piston for a piston engine and method producing a... Tubular piston for a piston engine and method producing a...

2004-01-29

2008-12-02

Leslie, Michael (Department: 3745)

Expansible chamber devices

With lubricating means

Lubricant passage extends axially through articulated piston...

C092S176000, C092S260000

Reexamination Certificate

active

07458313

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.

REFERENCES:
patent: 3319575 (1967-05-01), Havens
patent: 5265331 (1993-11-01), Engel et al.
patent: 5642654 (1997-07-01), Parekh et al.
patent: 6237467 (2001-05-01), Beck
patent: 19706075 (1997-02-01), None
patent: 19938046 (1999-08-01), None
patent: WO2004/070205 (2004-08-01), None

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