Stone working – Sawing – Rotary
Reexamination Certificate
2000-01-18
2001-07-24
Rose, Robert A. (Department: 3723)
Stone working
Sawing
Rotary
C125S035000, C451S454000
Reexamination Certificate
active
06263866
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to cutters and more particularly to a stone cutter which is easily to operate and conveniently to move.
Typical stone cutter
10
(as shown in FIGS.
1
,
2
and
3
) includes a sink
11
, a frame
12
disposed on the shoulder
111
of the sink
11
, a guide rod longitudinally secured to the frame
12
, a slider
123
sliding on the guide rod
121
, a plateform
17
having one end secured to the slider
123
and the other end secured to a pulley set
124
which is slidable on a longitudinal plate
122
of the frame
12
, a roughly L-shaped reinforcement
13
having one end integrated with the frame
12
and the other end screwed to a trapezoid upright
14
above the frame
12
, a motor
15
having on lower end screwed to the upright
14
and connected to a saw blade
16
on the other side of the upright opposite to the motor
15
and a casing
161
covering the blade
16
and having one end
164
secured to the outer end of the upright
14
by screw
162
and the other end
163
releasibly disposed to a slot
142
on the inner end of the upright
12
. This type of stone cutter
10
has the disadvantages set forth as follows:
a) the motor
15
is vertically disposed on the upright
14
and difficult to disassemble so as to be inconveniently to move,
b) the inner end
163
is abstrused by the motor
15
so that the opening span of the casing
161
is limited therefore causing difficult to change the saw blade
16
,
c) the saw blade
16
is unadjustable vertically so that it could not cope with the thickness of the working object,
d) which the slider
123
is contaminated with sawdust, the plateform
17
will not smoothly slidable.
The present invention will become more fully understood by reference to the following detailed description thereof when read in conjunction with the attached drawings.
REFERENCES:
patent: 4940038 (1990-07-01), O'Keefe
patent: 5676124 (1997-10-01), Lee
patent: 6000387 (1999-12-01), Lee
patent: 6152127 (2000-11-01), Fuhrman et al.
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