Vibration Damped Impact Tool with Pressure Air Feed Means
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United States of America Patent
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N/A
Issued Date -
Mar 27, 2008
app pub date -
Jul 5, 2005
filing date -
Jul 5, 2004
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A pneumatic impact tool comprises a housing having pressure air supply passage, and an impact mechanism movably supported in the housing and having a front opening for receiving a working implement and a hammer piston for delivering hammer blows to the working implement. The impact mechanism is supported in the housing by a pivot device in a point located between the forward and rear ends of the impact mechanism and allowing longitudinal and pivotal movements but preventing in the support point radial and rotational movements of the impact mechanism relative to the housing. A resilient membrane is located at a distance from the pivot device and is arranged to bias the impact mechanism to a neutral position relative to the housing while absorbing longitudinal as well as radial vibration movements of the impact mechanism. The membrane has at least one air feed passage connecting the air supply passage to the impact mechanism.
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