Cutting by use of rotating axially moving tool – With product handling or receiving means
Patent
1996-01-19
1997-11-18
Howell, Daniel W.
Cutting by use of rotating axially moving tool
With product handling or receiving means
408113, 408241S, 409137, B23B 4500
Patent
active
056880820
ABSTRACT:
A dust extraction housing for a rotary drill has a rear collar 10 which attaches to a stationary boss 14 of the drill and a concertina tube 18 extending forward to enclose the drill bit 22. A forward end piece 24 of the housing has an outlet 26 for attachment of a vacuum source and an air inlet 34 fitted with a removable filter 36.
REFERENCES:
patent: 3339435 (1967-09-01), Heitz
patent: 4921375 (1990-05-01), Famulari
patent: 5034041 (1991-07-01), Austin
patent: 5113951 (1992-05-01), Houben et al.
patent: 5292210 (1994-03-01), Nowick
patent: 5467835 (1995-11-01), Obermeier et al.
Cohen Jerry
Howell Daniel W.
Tsai Henry W. H.
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