Pneumatic sanding machine

Details Pneumatic sanding machine Pneumatic sanding machine

2005-11-29

2005-11-29

Thomas, David B. (Department: 3723)

Abrading

Frame or mount

Portable abrader

C451S451000, C451S456000, C451S344000, C451S357000, C451S353000, C409S137000

Reexamination Certificate

active

06969311

ABSTRACT:
A pneumatic sanding machine includes a body, a pneumatic motor assembly mounted in the body and a control valve detachably mounted in the body to change the path of compressed air that actuates the sanding machine. The control valve includes a first portion selectively closing one of different air passages in the body at a time, a second portion and a neck portion interconnecting the first portion with the second portion. Thus, a dust bag or a vacuum cleaner can be connected to the sanding machine to collect dust or sanding debris so that the sanding machine provides three different ways of dust collection, one of which is not to deal with the powder, the second is to collect the powder into a dust bag, and the third is to vacuum the powder into a vacuum cleaner.

REFERENCES:
patent: 3820558 (1974-06-01), Mueller
patent: 4302910 (1981-12-01), Tschacher
patent: 5538040 (1996-07-01), Huber et al.
patent: 5919085 (1999-07-01), Izumisawa
patent: 6328643 (2001-12-01), Huber
patent: 6447387 (2002-09-01), Tseng
patent: 2002/0111127 (2002-08-01), Tseng

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