Single-stroke pneumatic apparatus
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United States of America Patent
Stats
-
Sep 19, 1989
Grant Date -
N/A
app pub date -
Jun 16, 1988
filing date -
Oct 17, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A single-stroke pneumatic apparatus incorporates a hollow cylindrical frame1) with inlet and outlet ports (2,3). A handgrip (4) containing a directional flow control (5) is attached to the upper end of the frame. A striker (6) is provided in the bore of the frame (1) with provision for reciprocating back and forth so as to divide this bore into a forward-stroke chamber (8) a back-stroke chamber (7). A tool (9) is supported in the lower end of the frame (1). A shell (10) with holes (11) surrounds the frame (1) from the outside, forming a muffling chamber (12) therewith, within a full length of the stroke of the striker (6). Additional outlet ports (15) are provided in the lower end of the frame (1) which communicate the back-stroke chamber (8) with the muffling chamber (12) located wherein is a filter (6) overlapping the holes (11) in the shell (10).
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Cited Art Landscape
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