Metabowerke Gmbh & Co.

Michael Keller

Uwe Bunz

A vibration-cushioned handle, to be clamped in at one end, is designed for an electrical tool or the like. The handle has a coupling at one end for firm attachment to the body of the tool, and a coaxial handle sleeve. At least one cushioned spring element is located between the sleeve and the coupling. The handle provides good reduction of vibration, and sufficient sturdiness of the handle connection on the other, while being of simple construction. To this purpose, the spring element has different spring rigidities, on the one side in the radial direction relative to the axis of the handle sleeve, and on the other side in the direction of a pendulous or Cardanic excursion of the handle sleeve, around a pole lying on their axis.

Vibration-cushioned handle

A damping element for damping three-dimensional and torsional oscillations, in particular in hand tools, is proposed. The damping element includes an approximately bell-shaped rubber spring element defining a cavity which is filled with a damping fluid. The cavity is closed off at its open end with a rubber diaphragm. Within the cavity there is mounted at least one partition which defines overflow conduits or passages, and additional partitions at an angle to the partition defining the overflow conduits. The partition defining the overflow conduits is rigidly joined to a fastening sleeve situated in the rubber spring at the end thereof opposite to its open end.

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Nurtingen, Germany

Michael Keller