Abrading – Abrading process – With critical nonabrading work treating
Reexamination Certificate
2002-07-18
2004-09-07
Rachuba, M. (Department: 3635)
Abrading
Abrading process
With critical nonabrading work treating
C451S055000
Reexamination Certificate
active
06786804
ABSTRACT:
CROSS-REFERENCES TO RELATED APPLICATIONS
The present application claims priority under 35 U.S.C. §119 to Japanese Patent Application No. 2001-220290, filed Jul. 19, 2001, entitled “SIDING BOARD FOR CLAPBOARD BOARDING AND A CLAPBOARD BOARDING STRUCTURE”. The contents of this application are incorporated herein by reference in their entirety.
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a clapboard boarding structure wherein lower side portions of upper siding boards are overlapped frontward of upper side portions of lower siding boards for installing a plurality of siding boards to a framework of a building, siding boards for clapboard boarding used therein, and a method for manufacturing the same.
2. Discussion of the Background
As a known external wall structure for a building, there is such a clapboard boarding structure
9
as illustrated in FIG.
13
. When assuming one siding board
8
as a positional standard, a lower side portion
81
of another siding board
8
which disposed above the standard siding board
8
is overlapped frontward of an upper side portion
82
of the standard siding board
8
, and the two siding boards
8
are fastened to a framework
3
by nailing a nail
49
from a surface of the lower side portion
81
. This basic construction is repeated, thereby building the clapboard boarding structure
9
.
Such a clapboard boarding structure
9
is built by installing a plurality of siding boards
8
, which are lateral elongated shaped and made of wood, on a framework
3
in vertical directions.
However, such a clapboard boarding structure
9
has a disadvantage that the use of siding boards
8
of laterally elongated shape will result in a monotonous external appearance in view of an appearance in the lateral direction.
In view of this point, there has been proposed a clapboard boarding structure
90
constructed in the same manner as the above-described clapboard boarding structure
9
(that is, aligning a plurality of siding boards
80
in vertical directions in a partially overlapping manner and fastening them to a framework
3
by means of nails
49
) by using siding boards
80
obtained by laterally aligning and mounting a plurality of wooden single plates
88
onto an underlayment board
89
of a laterally elongated shape, as illustrated in
FIGS. 14
to
16
.
A longitudinal directional dimension of each wooden single plate
88
is larger than that of the underlayment board
89
, and a lateral directional dimension of each wooden single plate
88
is sufficiently smaller than that of the underlayment board
89
as shown in
FIGS. 14
,
15
. Moreover, the sizes of the respective wooden single plates
88
differ from each other.
With this arrangement, it is possible to obtain a clapboard boarding structure
90
with an external appearance as if the wooden single plates
88
of various shapes were individually mounted. More specifically, every wooden single plate
88
will produce different patterns and shapes so that it is possible to obtain an external wall having a touching external appearance with superior design. Construction will also be simplified by employing siding boards
80
of laterally elongated shapes.
However, such a clapboard boarding structure
90
has a disadvantage that the number of processes for manufacturing the siding boards
80
will be large since the siding boards
80
are obtained by mounting wooden single plates
88
onto the underlayment boards
89
. The fact that the siding boards
80
are made of wood also may result in insufficient weatherability and durability of the clapboard boarding structure
90
.
It has thus been considered to obtain a clapboard boarding structure employing ceramic type siding boards to produce an external appearance similar to the above-described clapboard boarding structure
90
as if single plates of various shapes were mounted thereon. More particularly, siding boards in which vertical joints are provided on designed surfaces of them and lower edges of lower side portions are arranged irregularly are formed of cement.
In such a case, vertical joints of the designed surface are formed through embossing at the time of manufacturing original plates. It is difficult to form the lower edges of the lower side portion at various positions through a grinding process owing to the complicated outlines thereof. It will thus be necessary to perform a punching process of semi-fabricated products prior to curing of the cement during the molding. Therefore, since large-sized siding boards are apt to deform, it will be difficult to obtain long siding boards.
It will consequently be necessary to perform construction by aligning a plurality of small siding boards in horizontal directions for obtaining such a structure. Therefore constructing a clapboard boarding is difficult.
SUMMARY OF THE INVENTION
An object of the present invention is to provide a siding board for clapboard boarding which is easily manufactured and enables easy construction of a clapboard boarding structure exhibiting superior external-appearance design, weatherability and durability, a method for manufacturing the same, and a clapboard boarding structure that can be obtained thereby.
According to one aspect of the invention, there is provided a siding board for clapboard boarding that is employed in a clapboard boarding structure in which a plurality of siding boards are installed to a framework of a building such that lower side portions of upper siding boards are overlapped frontward of upper side portions of lower siding boards, wherein the siding board is a ceramic type siding board having vertical joint grooves on a designed surface thereof, lower edges of a lower side portion formed at different heights with boundaries of the vertical joint grooves, a rear surface stepped portion formed on the lower side portion, which has been obtained by notching a rear surface of the siding board, and an upper end surface of the rear surface stepped portion formed to extend in a substantially straight line in lateral directions.
The siding board is formed with the vertical joint grooves on the designed surface thereof, and lower edges-of the lower side portion are formed at different heights with boundaries of the vertical joint grooves. Thus, the designed surface of the siding board is partitioned by the vertical joint grooves. Moreover, lower ends of the respectively partitioned designed surface are disposed at different positions. The siding board is employed in constructing a clapboard boarding structure, wherein the lower edges are exposed when in a constructed condition. Thus, it is possible to obtain a clapboard boarding structure that exhibits an external appearance as if a plurality of single plates of different sizes were mounted, that is touching and rich in variation, and that is of superior external-appearance design, when in a constructed condition.
Since the siding board may be a long siding board of a shape as if a plurality of single plates were integrated, construction thereof is made easy.
Since the siding board is a ceramic type siding board; it exhibits superior weatherability and durability. Moreover, since various concave and convex patterns may be easily formed on the designed surface, it is possible to obtain a large variety of external-appearance design.
Further, the rear surface stepped portion which has been obtained by notching the rear surface is formed on the lower side portion of the siding board. Thus, by overlapping the rear surface stepped portion of an upper siding board onto an upper end portion of a lower siding board, it is enabled to construct a clapboard boarding structure easily and reliably.
Since the upper end surface of the rear surface stepped portion is formed to extend in a substantially straight line in a lateral direction, the rear surface stepped portion may be easily formed through a grinding process or others, and the siding board may thus be easily manufactured.
As discussed above, it is possible to provide a siding board for clapboard boarding that may be
Nichiha Co., Ltd.
Rachuba M.
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