Static molds – In situ construction engineering type or building type-mold... – Forming building structure
Reexamination Certificate
1999-03-23
2001-05-15
Friedman, Carl D. (Department: 3635)
Static molds
In situ construction engineering type or building type-mold...
Forming building structure
C249S018000, C249S033000, C249S043000, C249S216000, C052S426000
Reexamination Certificate
active
06231025
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to a ready-mixed concrete placing method for filling ready-mixed concrete between formworks disposed at a predetermined interval, and a formwork unit used for this method.
BACKGROUND OF THE INVENTION
In a conventional ready-mixed concrete placing method and an unit used for this method as shown in
FIG. 18
, formworks
2
and
3
are placed on a foundation, a concrete subslab, or concrete floor
1
. A pair of pipes
4
and
5
are disposed in such a way as to sandwich the formworks
2
and
3
and thereby reinforce them. Ready-mixed concrete C is then filled in a space provided between the formworks
2
and
3
disposed in this manner until the concrete reaches the middle of formworks
2
and
3
.
In the conventional ready-mixed concrete placing method, it is very difficult to form the horizontal upper surface of the ready-mixed concrete C filled in the space provided between the formworks
2
and
3
. Even considerably skilled operators cannot level the horizontal surface of the ready-mixed concrete C precisely.
It is an object of the present invention to solve the problem of the conventional ready-mixed concrete placing method, and to provide a ready-mixed concrete placing method and associated formwork unit that enhance operability.
SUMMARY OF THE INVENTION
To achieve this object, the present invention is characterized in that at least two holding members comprising formwork fixing blocks and threaded rods screwed into tapped holes in the formwork fixing blocks are arranged at a predetermined interval, and a formwork unit configured by mounting formworks on the formwork fixing blocks is placed on a foundation member, and then the threaded rods are rotated so that the formwork fixing blocks with the formworks mounted thereon move along the threaded rods in the vertical direction, thereby leveling the formworks, and then ready-mixed concrete is filled in a space provided between the opposed formworks up to their upper end surfaces.
In addition, to attain the above object, the present invention provides a formwork unit comprising a holding member having formwork fixing blocks and threaded rods screwed into tapped holes in the formwork fixing blocks and also comprising formworks mounted on the formwork fixing blocks.
REFERENCES:
patent: 779288 (1905-01-01), Lane
patent: 5492303 (1996-02-01), Jaruzel
patent: 5852907 (1998-12-01), Tobin
Armstrong Westerman Hattori McLeland & Naughton LLP
Chavez Patrick J.
Friedman Carl D.
Takemura Kogyo Kabushiki Kaisha
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