Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Yarom Polsky0
Date of Patent
August 30, 2011
0Patent Application Number
123646000
Date Filed
February 3, 2009
0Patent Citations Received
Patent Primary Examiner
Patent abstract
A pneumatic device control apparatus and method comprising a ported valve slidably fitted over a feed tube of the pneumatic device, and using a compliant biasing device to constrain motion of the valve to provide asymmetric timing for extended pressurization of a power chamber and reduced pressurization of a return chamber of the pneumatic device. The pneumatic device can be a pneumatic hammer drill.
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