Woodworking – Planer – Adjustable work carrier
Reexamination Certificate
2002-03-21
2002-12-17
Bray, W. Donald (Department: 3725)
Woodworking
Planer
Adjustable work carrier
C144S114100, C144S117100, C248S188200
Reexamination Certificate
active
06494239
ABSTRACT:
CROSS-REFERENCE TO RELATED APPLICATION
This application claims priority of Taiwan patent Application No. 90224279, filed on Dec. 31, 2001.
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to a wood planing machine, more particularly to a wood planing machine with a height adjusting unit for adjusting the height of a work table of the wood planing machine.
2. Description of the Related Art
FIGS. 1 and 2
illustrate a conventional wood planing machine for planing a wooden work-piece (not shown). The planing machine includes a main support
11
defining a mounting wall
123
that faces upwardly and inclinedly relative to a horizontal plane, and a work table
10
having a horizontal plate
12
that defines the horizontal plane, and front and rear side plates
122
that project downwardly from the horizontal plate
12
and that are mounted slidably on the mounting wall
123
so as to permit the work table
10
to be movable in a longitudinal direction, which, in turn, permits adjustment of the thickness of the wooden work-piece to be planed. A height adjustment unit is mounted on the main support
11
, and includes a threaded part
131
that is secured to a bottom of the horizontal plate
12
, and a handle wheel
134
with a screw rod
133
that is secured to the main support
11
and that threadedly engages the threaded part
131
so as to permit sliding movement of the work table
10
together with the threaded part
131
in the longitudinal direction. The conventional planing machine is disadvantageous in that the thread formed in the threaded part
131
tends to be worn or damaged by the screw rod
133
due to vibration of the planing machine during that planing operation. Moreover, the side plates
122
of the work table
10
are mounted on the mounting wall
123
via a wedging mechanism which is difficult to be formed on the side plates
122
and the mounting wall
123
.
SUMMARY OF THE INVENTION
Therefore, it is an object of the present invention to provide a wood planing machine that is capable of overcoming the aforesaid drawbacks associated with the prior art.
Accordingly, a wood planing machine of this invention comprises: a main support including a base that has opposite front and rear ends and opposite left and right ends, and front and rear side walls that respectively and uprightly project from the front and rear ends of the base, that cooperately confine a mounting space therebetween, and that define a top open end of the main support opposite to the base; a mounting seat disposed in the mounting space and extending between and secured to the front and rear side walls, the mounting seat having an inclined mounting wall that extends inclinedly relative to a horizontal plane in a longitudinal direction from the right end of the base toward the left end of the base and that is formed with an elongated slot which extends in the longitudinal direction; a sliding member that is slidably mounted on the inclined mounting wall within the mounting space, and that has a top wall extending in a horizontal direction parallel to the horizontal plane, the sliding member being slidable on the inclined mounting wall in the longitudinal direction; a work table defining the horizontal plane, covering the top open end of the main support, and secured to the top wall of the sliding member so as to be co-slidable with the sliding member in the longitudinal direction; and a height adjusting unit including a screw unit, and a threaded part mounted securely on the sliding member via the screw unit which extends through the elongated slot, the sliding member and the threaded part so as to permit concurrent sliding movement of the sliding member and the threaded part on the inclined mounting wall in the longitudinal direction. The height adjusting unit further includes a screw rod that is rotatably mounted on the mounting seat, that extends in the longitudinal direction, and that threadedly engages the threaded part so as to move the work table together with the sliding member and the threaded part in the longitudinal direction upon rotation.
REFERENCES:
patent: 2960125 (1960-11-01), Erickson et al.
patent: 5143128 (1992-09-01), Chen
patent: 5979521 (1999-11-01), Garcia
patent: 6390425 (2002-05-01), Juang
Bray W. Donald
Trop Pruner & Hu P.C.
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