Piston rod for a vibration damper with amplitude-dependent damping force

A piston rod has a hollow section with an open end, a housing, and a fastening connection for a piston. The housing includes a cap welded to the open end, a tubular intermediate piece welded to the cap, and a bottom part attached to the fastening connection. The cap has a shoulder received in the in...

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Bibliographic Details
Main Authors SAUER KLAUS, BREUN WOLFGANG, EBERLEIN LUDWIG, WILHELM RALF
Format Patent
LanguageEnglish
Published 12.06.2007
Subjects
BLASTING
ENGINE PLANTS IN GENERAL
ENGINEERING ELEMENTS AND UNITS
GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS
HEATING
LIGHTING
MACHINES OR ENGINES IN GENERAL
MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENTTYPE, e.g. STEAM ENGINES
MEANS FOR DAMPING VIBRATION
MECHANICAL ENGINEERING
SHOCK-ABSORBERS
SPRINGS
STEAM ENGINES
THERMAL INSULATION IN GENERAL
WEAPONS
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Summary:A piston rod has a hollow section with an open end, a housing, and a fastening connection for a piston. The housing includes a cap welded to the open end, a tubular intermediate piece welded to the cap, and a bottom part attached to the fastening connection. The cap has a shoulder received in the intermediate piece to form an annular space which functions as a labyrinth seal to receive any weld spatters formed during the friction welding process. The outside surface of the piston rod is machined to final dimensions and surface coated following welding.
Bibliography:Application Number: US20050206986