Method of controlling driving power of double-solenoid electric percussion tools
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United States of America Patent
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Jun 2, 1998
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app pub date -
Oct 23, 1996
filing date -
Oct 23, 1996
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Abstract
A method of controlling driving power of a double-solenoid electric percussion tool utilizing the change of energizing time of the first solenoid to control the location of a hammer when the first solenoid is switched to the second solenoid so as to increase the driving power of a percussion tool.
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