Politechnika Warszawska

Krystian H Eyman

The invention relates to a method of obtaining mechanical periodic oscillations shocks, used particularly in vibrators for compaction of concrete mixes and other materials. A method according to the invention consisting in setting into rotary motion of at least two eccenters is characterized in that the eccenters are set into rotary motion with various speeds and phase displacements so that the sum of centrifugal forces in the set-up direction provides periodical oscillating motion in whose each period at least once all centrifugal forces of revolving eccenters, or the plurality of centrifugal forces coincide simultaneously with the set-up sense and operation direction, or directions parallel to each other.

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Warsaw, undefined

Krystian H Eyman