Linear Actuator in an Electric Percussion Tool
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United States of America Patent
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Issued Date -
Oct 16, 2008
app pub date -
Mar 31, 2006
filing date -
Apr 15, 2005
priority date (Note) -
Abandoned
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Abstract
A linear actuator in an electric percussion tool is equipped with a rotor and a stator, wherein the rotor has at least two stacks, which are arranged at a predetermined distance from one another, of superposed permanently magnetic bars, the stator is formed, at least partially, from a soft-magnetic material and has at least two pairs of teeth with mutually opposed teeth, of which each pair of teeth receives one of the two stacks between them, in each case, while forming an air gap, and wherein the stator has at least two magnetically conductive inner regions which are located between the two stacks, are arranged at a predetermined distance from one another in the direction of movement of the rotor and are at least partially surrounded, in each case, by an essentially hollow-cylindrical coil arrangement, the central longitudinal axis of which is oriented approximately transversely to the direction of movement of the rotor, and the rotor has a driving element which is able to transmit a mechanical impulse to a tool belonging to the electric percussion tool.
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