Impact wrench with a lubricated impact mechanism
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United States of America Patent
Stats
-
May 10, 2011
Grant Date -
Mar 25, 2010
app pub date -
Oct 8, 2007
filing date -
Oct 13, 2006
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An impact wrench includes a housing, a rotation motor, an output shaft, and an impact mechanism including an inertia drive member with an impact chamber, a drive socket coupling the drive member to the motor, and anvil formed integral with an output shaft and extending into the impact chamber, and a coupling member arranged to transfer kinetic energy from the drive member to the anvil, a lubricant provided in the impact chamber, and barrier forming cover element mounted on the drive member to seal off the impact chamber and prevent lubricant from being expelled from the impact chamber at rotation of the drive member.
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