Percussion apparatus
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United States of America Patent
Stats
-
Sep 2, 1986
Grant Date -
N/A
app pub date -
Feb 7, 1985
filing date -
Feb 7, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Percussion apparatus having a compressed air inlet (3) and serving to impart percussive movement to a tool (10), the said tool (10) sliding inside an envelope (1) fixed to the apparatus and being terminated by a spherical portion (22), includes the improvement wherein the said tool (10) includes a hollow tube (13) with one end (21) holding a ball (22) captive, which ball is urged against the end (21) by a spring (24) lodged in the tube (13). When the ball (22) is worn, it is easily changed.
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