Filter assembly for a pneumatic tool

Details Filter assembly for a pneumatic tool Filter assembly for a pneumatic tool

2005-09-14

2008-08-05

Griffin, Walter D. (Department: 1797)

Gas separation: processes

Solid sorption

Organic gas or liquid particle sorbed

C055S385800

Reexamination Certificate

active

07407530

ABSTRACT:
A filter assembly for a pneumatic tool has an inner housing, a cover, an inner tube and a connecting post. The cover is attached to the inner housing and has a connecting portion and at least one air passage. The connecting portion has an inner space. The at least one air passage communicates with the inner space in the connecting portion. The inner tube is mounted inside the inner housing and defines an annular space between the inner tube and the inner housing to hold filters and/or drying agents inside and communicating with the at least one air passage. The connecting post extends into the inner tube, is detachably connected with the cover and has an air channel and multiple discharging holes. The discharging holes communicate with the air channel in the connecting post and the annular space between the inner tube and the inner housing.

REFERENCES:
patent: 2579053 (1951-12-01), Schulstadt
patent: 3681899 (1972-08-01), Grote
patent: 4136009 (1979-01-01), Samiran
patent: 4400187 (1983-08-01), Lane
patent: 4548624 (1985-10-01), Waller
patent: 5020610 (1991-06-01), Lyon et al.
patent: 2006/0162302 (2006-07-01), Terrell

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