Hand-held tool with a linear oscillating drive
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United States of America Patent
Stats
-
Jul 9, 2002
Grant Date -
N/A
app pub date -
Apr 20, 2000
filing date -
Oct 21, 1997
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A motor housing (11) is mounted in a handle body (10) so as to slide in the longitudinal direction. A tubular pipe (37) that can slide in a bore (38) of the body (10) projects from the back of the housing (11). Compressed air can be applied to the bore (38) through a switching valve (40). A piston (14) with a piston rod (17) can slide in the housing and a tool can be secured to its front end. A flutter valve (23) which alternatingly connects the bore (38) to the two cylinder chambers (27, 28) is built into the valve housing (22). The piston (14) alternatingly opens the connection to an outgoing air conduit (29-31). A pre-stressed spring (47) is set between the body (10) and the housing (11). In operation, the housing (11) oscillates out of step with the piston (14), so that their initial forces are largely compensated and no vibrations are transmitted to the handle body (10).
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Cited Art Landscape
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