Woodworking – Cutter hood or dust conveyor
Reexamination Certificate
2002-07-11
2003-06-03
Bray, W. Donald (Department: 3725)
Woodworking
Cutter hood or dust conveyor
C015S312100, C015S314000, C015S091000, C083S167000, C144S114100, C451S453000, C451S456000
Reexamination Certificate
active
06571838
ABSTRACT:
CROSS REFERENCE TO RELATED APPLICATION
This application claims priority of Taiwan Application No. 91205357, filed on Apr. 19, 2002.
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a wood machining apparatus, more particularly to a sawdust collector for a wood machining apparatus
2. Description of the Related Art
Referring to
FIGS. 1 and 2
, a conventional wood machining apparatus
10
according to U.S. Pat. No. 6,293,321 B1 is shown to include: a base
11
, a cutter carriage
13
, a motor housing
15
mounted on the cutter carriage
13
and having a vent port, a motor (not shown) disposed in the motor housing
15
, a rotary cutter
14
mounted on the cutter carriage
13
, a shaft
12
extending from the rotary cutter
14
and driven by the motor, a blower
22
mounted on the cutter carriage
13
and having a fan
221
that is driven by the shaft
12
, a sawdust-guiding member
21
mounted on the cutter carriage
13
and having a box
211
and a spout which extends from the box
211
to the rotary cutter
14
to define a sawdust passage, an air duct
212
in fluid communication with the vent port of the motor housing
15
and the box
211
, a first conduit
23
in fluid communication with the blower housing
22
and the box
211
, a second conduit
24
in fluid communication with the blower housing
22
, and a sawdust collector
25
in fluid communication with the second conduit
24
. In operation, sawdust enters the spout, and is carried by the air flowing through the sawdust passage and the first and second conduits
23
,
24
into the sawdust collector
25
.
The aforementioned conventional wood machining apparatus
10
occupies a relatively large amount of space since the sawdust collector
25
is disposed externally of the base
11
.
SUMMARY OF THE INVENTION
Therefore, the object of this invention is to provide a wood machining apparatus in which a sawdust collector can be disposed directly below a cutter carriage so as to save space.
Accordingly, a wood machining apparatus of the present invention includes a base, two pairs of supporting rods, a cutter carriage, a rotary cutter, a blower, a sawdust-guiding member, a conduit, and a sawdust collector. The base has two opposite sides and front and rear sides. The supporting rods respectively extend uprightly from the opposite sides of the base. The cutter carriage includes a pair of parallel carriage casings mounted movably and respectively on the supporting rods. The rotary cutter is mounted rotatably on, and extends between the carriage casings, and is adapted to plane a wooden workpiece thereunder. The blower is mounted on one of the carriage casings, and has a blower housing. The sawdust-guiding member includes an air duct that extends between and that is mounted on the carriage casings, that is connected to and that is in fluid communication with the blower, and that is adapted to receive sawdust generated by the rotary cutter during a machining operation. The conduit has a first end connected to and in fluid communication with the blower housing, and a second end opposite to the first end. The sawdust collector is disposed below the base, includes a casing having two opposite upright walls with top and bottom ends, and a supporting wall that interconnects the top ends of the upright walls to support the base thereon, and that cooperates with the upright walls to confine a bin-receiving space. The supporting wall is formed with a conduit opening to permit extension of the second end of the second conduit therethrough. A mounting rod is mounted on and extends between the bottom ends of the upright walls at the rear side of the base. A sawdust collecting bin defines a sawdust-collecting space therein, has a top opening for access into the sawdust-collecting space, and two opposite side walls that confine two opposite sides of the sawdust-collecting space, and is pivoted to the mounting rod in such a manner that the sawdust collecting bin is turnable about the mounting rod between a sawdust collecting position, in which the top opening in the sawdust collecting bin is enclosed in the bin-receiving space so as to permit collection of sawdust from the air duct via the conduit into the sawdust collecting space, and a sawdust removing position, in which the top opening in the sawdust collecting bin is exposed outwardly of the bin-receiving space so as to facilitate removal of sawdust from the sawdust collecting space.
REFERENCES:
patent: 2637396 (1953-05-01), Spiller et al.
patent: 4392268 (1983-07-01), Bueno
patent: 4555874 (1985-12-01), Chung
patent: 6293321 (2001-09-01), Chiang
Bray W. Donald
Trop Pruner & Hu P.C.
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