Cutting – With product handling means – By fluid current
Reexamination Certificate
2006-08-01
2006-08-01
Dexter, Clark F. (Department: 3724)
Cutting
With product handling means
By fluid current
C083S098000, C083S478000, C083S490000, C144S252100, C241S101200, C451S456000
Reexamination Certificate
active
07082867
ABSTRACT:
A circular saw includes a worktable, a blade supporting unit pivotally mounted to the worktable, a saw blade shaft mounted rotatably on the supporting unit and driven by a motor to rotate a saw blade, a driving shaft mounted rotatably on the supporting unit, and a dust collecting member confining a dust passageway which has an intake port in the vicinity of the saw blade, and an outlet port for passage of wood dust. A blower casing is disposed outwardly of the supporting unit, and defines an accommodation chamber disposed downstream of the outlet port and receiving a driving end of the driving shaft. An impeller is mounted on the driving end and is rotatable so as to draw wood dust from the dust passageway into the accommodation chamber and out through a discharge port.
REFERENCES:
patent: 1013534 (1912-01-01), Cheney
patent: 1983277 (1934-12-01), Emmons
patent: RE20687 (1938-04-01), Grozier
patent: 2236232 (1941-03-01), Brescka et al.
patent: 3669163 (1972-06-01), Crane
patent: 6772664 (2004-08-01), Chiang
patent: 6837134 (2005-01-01), Chin-Chin
patent: 6866568 (2005-03-01), Liao
patent: 6925919 (2005-08-01), Liao et al.
patent: 6948412 (2005-09-01), Brazell et al.
Dexter Clark F.
DLA Piper Rudnick Gray Cary US LLP
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