Percussive mechanism with an electrodynamic linear drive
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United States of America Patent
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Sep 17, 2013
Grant Date -
Sep 23, 2010
app pub date -
Jun 28, 2006
filing date -
Jun 29, 2005
priority date (Note) -
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Abstract
A percussive mechanism, which is provided in the form of an, e.g. pneumatic spring percussive mechanism, comprises an electrodynamic linear drive, a drive piston, which can be reciprocally moved inside a percussive mechanism housing by the linear drive, and a percussive piston. An additional hollow space is provided in front of and/or behind the drive piston and can be isolated at least in part from the surrounding area so that a pneumatic spring can be created in the additional hollow space. The pneumatic spring slows the drive piston at its returning points and facilitates a returning motion without loading the electrodynamic linear drive.
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