Percussion device
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United States of America Patent
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-
Feb 9, 1988
Issued Date -
N/A
app pub date -
Sep 22, 1986
filing date -
Feb 9, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The percussion mechanism of this device, comprising a cylinder, a free piston, an anvil, a tool holder in which a bundle of needles is disposed, the heads of which are applied to the anvil, is mounted to slide in a tubular housing between two springs used to insulate dynamically the percussion mechanism of the housing and of the handle which holds it. The cylinder is mounted in the housing by a suspension comprising two annular seals and the cylinder is set with a clearance so that the centering provided by the seals insulates mechanically the cylinder of the housing and reduces the transmission of vibrations.
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