Static structures (e.g. – buildings) – Enclosure including flaccid nonmetallic or foraminous surfacing
Reexamination Certificate
2002-10-15
2004-07-06
Chapman, Jeanette (Department: 3635)
Static structures (e.g., buildings)
Enclosure including flaccid nonmetallic or foraminous surfacing
C052S079100, C047S020100, C047S031000, C135S121000, C135S122000
Reexamination Certificate
active
06758014
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention is related to an improved trellis structure that can be conveniently assembled.
With reference to
FIGS. 27-29
, a conventional greenhouse trellis for culture is composed of multiple upright columns
71
, transverse beams
72
and a ridge beam
73
which are connected by various patterns of connecting members, such as screws. The trellis is covered by a light shading mesh (not shown) or plastic sheet (not shown) for achieving shading effect. In order to prevent the light shading mesh or plastic sheet from being broken during drilling or screwing, a fixing member
8
is provided for connecting the columns with the beams. The fixing member
8
has an insertion channel
81
defined therein. The fixing member
8
is first connected with the upright column
71
, transverse beam
72
or the ridge beam
73
. Then the light shading mesh or plastic sheet is inserted into the insertion channel
81
of the fixing member
8
for fixing the light shading mesh or plastic sheet. Accordingly, multiple fixing members
8
are necessary to the trellis during assembling. This complicates the assembly of the trellis and leads to increment of cost.
The fixing member
8
is connected with the column
71
, transverse beam
72
or the ridge
73
by connecting members
9
and the connecting member of the preferred embodiment of the convention trellis structure is a screw. Consequently, the exposed heads of the screws often hook and break the light shading mesh or plastic sheet when the light shading mesh or plastic sheet is inserted into the fixing member
8
.
SUMMARY OF THE INVENTION
It is therefore a primary object of the present invention to provide an improved trellis structure in which a press beam is used instead of the conventional fixing member. The press beam of the trellis of the present invention has double functions of supporting the trellis and fixing the light shading mesh or plastic sheet. Therefore, the components of the trellis are simplified and the assembling procedure of the trellis is facilitated and the cost for the trellis is lowered.
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