Pneumatic tool with an improved soundproof device

Details Pneumatic tool with an improved soundproof device Pneumatic tool with an improved soundproof device

2009-05-15

2011-12-13

Rada, Rinaldi (Department: 3721)

Tool driving or impacting

Means to drive tool about an axis

Fluid motor

C173S218000

Reexamination Certificate

active

08074736

ABSTRACT:
A pneumatic tool with an improved soundproof device includes a housing whose rear end has a screw hole for supplying a high-pressure gas. The input high-pressure gas drives a pneumatic motor before it leaves the rear end of the housing. A cover covers the rear end of the housing. The cover has a penetrating hole. A guiding element has a guiding section that gradually expands outwards. The guiding element goes through the penetrating hole. An annular ventilation space is formed between the guiding section of the guiding element and the penetrating hole. A gas inlet connector is disposed in the screw hole. The shoulder part of the gas inlet connector stops the guiding element, so that the gas in the ventilation space is guided by the guiding section of the guiding element to escape.

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