Horizontally supported planar surfaces – Folding – Mutually pivoted crossed legs support surface
Reexamination Certificate
2000-01-26
2001-11-13
Rachuba, M. (Department: 3724)
Horizontally supported planar surfaces
Folding
Mutually pivoted crossed legs support surface
C083S859000
Reexamination Certificate
active
06314893
ABSTRACT:
BACKGROUND OF THE PRESENT INVENTION
1. Field of Invention
The present invention relates to table frame, and more particularly to a foldable table frame for cutting machine, which can be quickly and easily folded for carriage and storage and unfolded for supporting the cutting machine.
2. Description of Related Arts
Referring to
FIG. 1
of the drawing, a conventional cutting machine is illustrated, that is commonly used in the construction industry for shaping and cutting materials such as ceramic tile, marble, cranite, and natural stone. The conventional cutting machine comprises a cutting table
11
supported on a supporting frame
12
, four construction posts
121
positioned at four corners of the supporting frame
12
, a cutting head
13
overhanging the cutting table
11
with a circular saw blade
14
which is powered by an electric motor
15
. The electric motor
15
is directly mounted on the cutting head
13
for driving the saw blade
14
to rotate through a transmission means
16
.
Accordingly, the conventional cutting machine further comprises a floor standing frame
17
which comprises a set of four standing legs
171
detachably connected with the four construction posts
121
respectively by a connecting bolt
172
for supporting the cutting machine on a floor. During transportation or storage, a user may detach the four standing legs
171
by pulling them out from four construction posts
121
after unscrewing the connecting bolts
172
.
However, the conventional floor standing frame for supporting the cutting machine includes the following drawbacks:
1. The cutting head comprising a motor and a transmission means is positioned above the supporting frame and the floor standing frame must support the heavy weight of the cutting head. In fact, the four-leg structure of the floor standing frame is weak structure to support the heaving weight. Therefore, the four standing legs of the floor standing frame must be made of strong material such as cast iron or steel alloy can be securely fastened to the four construction posts in order to rigidly support the heavy cutting head.
2. The floor standing frame requires assembly or disassembly to use or store. The floor standing frame is detachably attached on the supporting by means of the four standing legs can be detached from the four construction posts of the supporting frame respectively. So, the user must assemble the floor standing frame when the cutting machine is needed to be used and disassemble the four standing legs from the supporting frame after using the cutting machine.
3. The floor standing frame which is constructed by several parts includes four standing legs and several connecting bolts. When the floor standing frame is disassembled for transportation or storage, the user must carry or store all the several parts of the floor standing frame because it is easy to loss one of the parts.
4. When the floor standing frame is assembled for use, the user must need a tool to attach the floor standing frame to the supporting frame so as to connect the standing legs to the construction posts by screwing the connecting bolts. Likewise, the user must use a tool to unscrew the connecting bolts in order to detach the standing legs from the construction posts when disassembling the floor standing frame.
SUMMARY OF THE PRESENT INVENTION
A main object of the present invention is to provide a table frame for supporting a cutting machine, which can be easily folded for storage and carriage and unfolded for supporting the cutting machine or other similar machines.
Another object of the present invention is to provide a table frame for cutting machine that does not require assembly or disassembly to use or store.
Another object of the present invention is to provide table frame which not only provides adequate support for cutting machine but also provides an additional work table for objects to be or after shaped and cut.
Another object of the present invention is to provide table frame that can be used in any location without using tools for its assembly or disassembly.
Another object of the present invention is to provide table frame that can be easily carried with one hand and transported in any vehicle.
Accordingly, in order to accomplish the above objects, the present invention provides a table frame for cutting machine, which comprises a foldable support frame and a tabletop frame.
The foldable support frame comprises:
two opposing pairs of leg frames each of which comprises a pair of first and second crossed legs pivotally connected together where the first and second crossed legs cross,
a first connection means for supporting the two first crossed legs in parallel manner,
a second connection means for supporting the two second crossed legs in parallel manner,
a supporting bar affixedly connected between two top ends of the two first crossed legs, and
a stopper means for supporting between the first and second crossed legs of each of the two leg frames and limiting the inclination of each of the first and second crossed legs, so that the foldable support frame is able to be unfolded to a set-up structure in which each of the leg frames can be unfolded to form a rigid “X” structure to support the tabletop frame thereon, or be folded up to an overlapping structure.
The tabletop frame comprises:
a hinge bar,
a pair of parallel table arms each having one end perpendicularly connected to two ends of the hinge bar to form a connecting end portion of the tabletop frame which is pivotally connected between two top ends of the two second crossed legs, wherein each of the two table arms is extended from the hinge bar to form a tabletop portion and a tail portion, each of the tabletop portions of the two table arms having a length equal to a distance between the top ends of the first and second crossed legs and supporting between the hinge bar and the supporting bar, the two tail portions of the two table arms respectively extending outwardly from the supporting bar when the table frame is unfolded to the set-up structure, and
a table board affixed between the two tail portions of the two table arms,
thereby, by pivotally rotating the connecting end portion, the tabletop frame can be lifted up to horizontally rest across the supporting bar or be dropped down to vertically overlap with the folded support frame.
REFERENCES:
patent: 152871 (1874-07-01), Shallus
patent: 1743972 (1930-01-01), Krummes
patent: 1941333 (1933-12-01), Whalley et al.
patent: 1975857 (1934-10-01), McKenney
patent: 3017034 (1962-01-01), Klein
patent: 4262606 (1981-04-01), Hodson
patent: 4760801 (1988-08-01), Campbell
patent: 4904018 (1990-02-01), Young
patent: 5320150 (1994-06-01), Everts et al.
patent: 5509360 (1996-04-01), Chin
patent: 5542359 (1996-08-01), Polries
patent: 5542639 (1996-08-01), Wixey et al.
patent: 5584254 (1996-12-01), Williams
patent: 5884681 (1999-03-01), Nickles
Chan Raymond Y.
David and Raymond Patent Group
Flores-Saánchez Omar
Rachuba M.
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