Woodworking – Cutter hood or dust conveyor
Reexamination Certificate
2002-10-31
2003-10-07
Bray, W. Donald (Department: 3725)
Woodworking
Cutter hood or dust conveyor
C015S312200, C015S314000, C144S114100, C409S137000
Reexamination Certificate
active
06629548
ABSTRACT:
CROSS REFERENCE TO RELATED APPLICATION
This application claims priority of Taiwan Application No. 091210748, filed on Jul. 15, 2002.
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a sawdust collecting device, more particularly to a sawdust collecting device for a wood planing machine.
2. Description of the Related Art
Referring to
FIGS. 1 and 2
, a conventional sawdust collecting device for a wood planing machine
2
is shown to include a sawdust collecting bag
11
, and a C-shaped fastener clip
12
. The sawdust collecting bag
11
has a constricted open top end
110
sleeved around a sawdust discharging outlet
21
of the wood planing machine
2
. The C-shaped fastener clip
12
is sleeved around the top end
110
of the sawdust collecting bag
11
, and is tightened by means of a screw
13
and a nut
14
so as to prevent removal of the sawdust collecting bag
11
from the sawdust discharging outlet
21
.
The aforementioned conventional sawdust collecting device is disadvantageous in that it is inconvenient to tighten or loosen the fastener clip
12
around the open top end
110
of the sawdust collecting bag
11
. Moreover, it is fairly difficult to discard the sawdust from the sawdust collecting bag
11
since the open top end
110
is relatively small.
SUMMARY OF THE INVENTION
Therefore, the object of this invention is to provide a sawdust collecting device for a wood planing machine so as to eliminate the aforesaid disadvantage.
Accordingly, a sawdust collecting device of the present invention is adapted to be mounted on the sawdust-discharging outlet of a wood planing machine, and includes a flexible sleeve, a truncated coneshaped coil spring, and a sawdust collector. The flexible sleeve includes a tapered top section having an open top end and an inner wall, and a bottom section having an open bottom end that is opposite to the open top end and that has a cross-section greater than that of the open top end. The open top end is tapered in a direction away from the open bottom end. The coil spring is disposed in the tapered top section of the flexible sleeve, and abuts against the inner wall of the tapered top section of the flexible sleeve so as to expand the tapered top section. The coil spring is adapted to be sleeved on the sawdust-discharging outlet of the wood planing machine. The sawdust collector has an open top end connected removably to the open bottom end of the flexible sleeve.
REFERENCES:
patent: 5150499 (1992-09-01), Berfield
patent: 5882155 (1999-03-01), Testa, Jr.
patent: 6289956 (2001-09-01), Shriver
patent: 6293321 (2001-09-01), Chiang
patent: 6382278 (2002-05-01), Liao et al.
patent: 6481474 (2002-11-01), Liao et al.
patent: 6481475 (2002-11-01), Liao et al.
Bray W. Donald
Trop Pruner & Hu P.C.
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