Hand-held hammer drill
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United States of America Patent
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-
Aug 25, 2009
Grant Date -
Jul 10, 2008
app pub date -
Jan 10, 2008
filing date -
Jan 10, 2007
priority date (Note) -
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status (Latency Note)
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Abstract
A hand-held hammer drill has a housing, a tool spindle rotatingly driving a tool, a hammer action percussion-driving the tool, a swash plate drive driving the hammer action, and a countershaft driving as needed the tool spindle and the hammer action. A first bearing and an axial bearing are provided. The hub is rotatably supported in a cantilevered arrangement by the first bearing in the housing and coaxially surrounds the countershaft. The hub has a free cantilevered end and the axial bearing is disposed on the free cantilevered end, wherein the axial bearing axially supports the countershaft and has radial play relative to the countershaft.
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