Pneumatic power tool with exhaust air outlet deflector

Details Pneumatic power tool with exhaust air outlet deflector Pneumatic power tool with exhaust air outlet deflector

2005-08-02

2005-08-02

Smith, Scott A. (Department: 3721)

Tool driving or impacting

Passage in manipulating handle for drive motor motive fluid

Motive fluid control valve in handle passage

C173S168000, C173S170000, C173SDIG002

Reexamination Certificate

active

06923272

ABSTRACT:
A pneumatic power tool comprises a housing (10, 11) with a motor and a pressure air inlet passage (12) and an exhaust air outlet passage (16) both extending through the housing (10, 11) and communicating with the motor, wherein the outlet passage (16) is provided with sound attenuating elements (36, 37) formed in a highly porous resinous material and arranged to be penetrated by the exhaust flow for exhaust noise reduction, and an exhaust flow diverting deflector (17) mounted at the outlet end of the outlet passage (16) and comprising a shell like body (18) with a cylindrical neck portion (19) rotatively received in the outlet passage (16), a concave flow guiding surface (28), and two parallel inner walls (30a, b) forming between them a main flow passage (31) and between them and the shell body (18) two narrow secondary flow passages (32a, b) for accomplishing noise dampening low velocity air flow shields on both sides of the main flow.

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patent: 0849052 (1998-06-01), None
patent: WO 0154865 (2001-08-01), None

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