Pneumatic impact tool and piston for a pneumatic impact tool
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United States of America Patent
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-
Jan 23, 1996
Grant Date -
N/A
app pub date -
Mar 22, 1994
filing date -
Mar 30, 1993
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The impact tool is provided with a piston (15) oscillating within a cylinder (10). For selecting, with which piston impact surface the piston (15) impacts on the head (7) of a tool holder (2) and accordingly for the selection whether the impact tool generates forward or rearward strikes, respectively, the cylinder (10) is displaced pneumatically between two positions. The displacement occurs depending on the position of a switch (21). This changing of the impact direction is simple and makes it possible to fix the tool holder in the housing (1) making the impact tool sturdy.
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