Agitating – Mortar mixer type – With dynamic delivery
Reexamination Certificate
2000-01-18
2002-05-14
Cooley, Charles E. (Department: 1723)
Agitating
Mortar mixer type
With dynamic delivery
C366S065000
Reexamination Certificate
active
06386747
ABSTRACT:
BACKGROUND OF THE INVENTION
a) Technical Field of the Invention
The present invention relates to an apparatus for mixing cement, and in particular, to a cement mixing device which can be easily operated in the mixing process, or easily assembled for mixing process.
b) Description of the Prior Art
Conventional cement mixing apparatus is shown in
FIGS. 1
,
2
and
3
. The mixing apparatus has a mixing cylinder
92
mounted with a power mechanism
93
. Via a transmission shaft
94
, power is transmitted to the mixing arm
80
of the apparatus such that the mixing cylinder
92
proceeds to mix cement, sand and water. Referning to
FIGS. 1
to
4
, the bottom portion of the mixing apparatus is a frame
91
with four mounting bolts
911
at the four comers thereof. The interior of the Same
91
can accommodate the transmission mechanism
93
, which is mounted at a panel
912
on the frame
91
. The center of the panel
912
is provided with a through hole
913
for the extension of the mounting portion
931
of the transmission mechanism
93
. The bottom portion of the mixing cylinder
92
is provided with a circular hole
921
for the extension of a mounting portion
941
of the ts sion shaft
94
. The mounting portion
941
can engage with the mounting portion
931
of the transmission mechanism
93
. The bottom end of the mixing cylinder
92
has an arch-shaped slot
923
and a straight slot
922
which can be mounted with the mounting bolt
911
. The mounting bolt
911
can be secured using screws, and the mixing cylinder
92
can be fitted to the frame
91
. By removing the screws, the mixing cylinder
92
can rotate 90 degrees facilitating moving the mixing device into a house through a narrow door.
As shown in
FIG. 5
, the interior of the mixing cylinder
92
is provided with a cylinder tube
95
having mounted with bearings enclosing the transmission shaft
94
. The transmission shaft can be rotated within the cylinder tube
95
. The mixing cylinder
92
drives the cylinder tube
95
to rotate 90 degrees. One end of the transmission shaft
94
is connected to the mixing arm
80
, and the other end is connected to the transmission mechanism
93
. Power is transmitted from the transmission mechanism
93
to the mixing arm
80
.
Referring to
FIG. 6
, an outlet
924
is provided at the bottom of the mixing cylinder
92
and after the cement is mixed, it is poured out through the outlet
924
. There are drawbacks found in the conventional cement mixing device
1) The height of the mixing cylinder is higher than the height of the cart to allow pouring out of the mixed cement. Therefore, it is laborious to place the mixing materials prior to mixing.
2) The material for the mixing cylinder is thick and heavy. Therefore, the cost of making the same is high.
3) The mounting of the cylinder tube with the mixing cylinder is complicated.
4) The mixing cylinders can not be stacked together. Therefore, it is not convenient in transporting from the manufacturer to work site.
5) The alignment of the center of the transmission shaft and the transmission mechanism is difficult to achieve.
6) The storage of the entire structure of the cement mixing apparatus is difficult.
7) There are too many parts making up the apparatus. Therefore, the cost of manufacturing is expensive.
SUMMARY OF THE INVENTION
Accordingly, it is an object of the present invention, is to provide an improved structure of a cement mixing apparatus comprising a base frame, two supporting frame, a panel, a mixing cylinder and a transmission mechanism, characterized in that the base seat has a substantial square shaped structure having a plurality of mounting holes for screws; the supporting frame is H-shaped structure with a plurality of mounting holes for screws to mount a reinforcing plate at the top end of the supporting frame to the base frame, and the two supporting frames are mounted together with the reinforcing plate as a unit such that the base frame and two supporting frame are formed into a framework structure.
REFERENCES:
patent: 4134686 (1979-01-01), Hauser et al.
patent: 4191478 (1980-03-01), Zupancic et al.
patent: 4521116 (1985-06-01), Adsit
patent: 4802783 (1989-02-01), Erikson
patent: 5137366 (1992-08-01), Hill et al.
patent: 5419633 (1995-05-01), Lorenzetti et al.
patent: 5730657 (1998-03-01), Olgren
Liao Shu Yuan
Liao Shu-Hung
Nieh Chu-San
A & J
Cooley Charles E.
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