Pneumatic impact tool and method

Details Pneumatic impact tool and method Pneumatic impact tool and method

2006-06-07

2009-10-27

Rada, Rinaldi I. (Department: 3721)

Tool driving or impacting

Drive controlled by relative axial movement of tool

Drive motor controlled

C173S032000, C091S039000

Reexamination Certificate

active

07607490

ABSTRACT:
A pneumatic impact tool and method includes a cylinder pipe or housing closed with a cover, as well as an impact piston that forms a first pressure chamber between an impact plate and the impact piston, and a second pressure chamber between the cover and the impact piston. The cover is provided with at least one opening, the surface of which is smaller than the piston surface, whereby the impact piston seals the opening when it is in its fully retracted position.

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