Note: Descriptions are shown in the official language in which they were submitted.
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ROOFING SLAB
FIELD AND BACKGROUND OF THE INVENTION
The present invention relates to a roofing slab with
roof lead-through in the form of a pipe of adjustable inclination
which extends from the bottom of the roofing slab to a point above
the slab, there being provided a correspondingly dimensioned
passage hole in the region of the vertex of a dome having a
cupola-shaped top furthermore there is associated with the pipe a
hood part of corresponding shape, the resting of the hood part on
a dome being secured by urging the pipe towards the roofing slab
in a region of the lower part of the roofing slab.
A roofing slab of this type is known from Federal
Republic of Germany Utility Model 83 16 888.
In view o:E the di~ferent purpose of use of such roof
lead-throughs, for instance for stove exhaust hoods, for venting
and even for the passage of antennas, there is a considerable
diversity in shape, even .Eor parts which, based on their function,
would not have to be included in the variation. Storage and
shipment are correspondingly expensive.
SUMMARY OF T~E INVENTION
It is the object of the present invention to create a
roofing slab with roof lead-through of this type in the case of
which the adaptation to a specific special purpose of use or
configuration is achieved with the simplest means from a
manufacturing and mounting s.tandpoint.
This object is achieved by the invention in which there
is provided a roofing slab with a dome and a roof lead-through in
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the form of a pipe having adjustable inclination relative to the
slab, the pipe extending from a point beneath the roofing slab to
a point above the slab via a correspondingly dimensioned passage
hole provided in a region of the vertex of the dome, there being a
dome-shaped upper side of the dome for receiving the hood part in
form-fitting manner, the hood part encircling the pipe; and
wherein the pipe is divided into a lower and an upper pipe part by
a coupling place located above the hood part; said slab further
comprising means at said eoupling place for securing said lower
pipe part on the lower side of the slab to the hood part and to
said upper pipe part, a top of said lower pipe part being joined
to a bottom of said upper pipe part; and wherein a resting of the
hood part on the dome is secured by said securing means.
As a result of this development, a roofing slab of this
type ls of increased value in use. Due to the fact that the pipe
is now developed in two parts with a coupling place above the hood
paxt, only the pipe part which is in accord with the purpose
pursued need be attached. A11 other basic parts can remain
unchanged. This is advantageous both ~or stocking and with
respect to possible later changes, for instance in the manner that
the roof lead~through is now used for the leading through of an
antenna rather than as a vent device as previously. The mounting
is limited to the eliminatlng o~ the coupling connection and the
corresponding attachment of the other part. The place of coupling
is freely accessible.
As an advantageous further development, it is proposed
that the hoo~ part which is displaceable on the lower pipe part ba
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acted on in the region of the place of coupling of the upper pipe
part in the direction of clamping the application of hood part and
dome against each other. As a result of suitable clamping, the
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inclination between roofing slab and pipe can be shifted and
clamped fast by this means.
With this development even the previously employed
bonding of the hood part to the inward leading pipe can be
dispensed with. The sealing problems inherent therein also no
longer occur. Rather, the clamping pressure obtainable even
favors the tight application of the parts which are coupled to
each other. Specifically a solution is favourable in which the
hood part forms a collar which is adapted to the cross section of
the pipe and the end edge of which is acted on by a shoulder of
the upper pipe part. The clamping stress flows equally into the
end edge; no partial maximum stresses are produced. The
corresponding annular wall of the collar can therefore also be
kept very thin, which has a positive effect with regard to the
saving o~ material, which is today of great interest.
Furthermore, it is advantageous that the upper pipe part
can be screwed into the end of the lower pipe part. In this way
the simplest manner of coupling can be realized in practice and
the clamping together adjusted precisely. It is advantageous from
a structural standpoint for the shoulder to be formed by a wall
offset. Due to the fact that the collar protrudes beyond the end
edge of the lower pipe part, there is always an axial free clamp-
ing space which still permits additional clamping at any time.
Finally, one advantageous feature resides;in the fact that the
lower e~nd of the upper pipe is forked with rotational symmetry.
The upper end of the lower pipe part enters into the groove of the
fork. The radial joint is in this way covered by a cap-shaped
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structural part, which therefore effectively prevents the
penetration of rain water if the seat is not suficiently tight.
Water of condensation which precipitates within the pipe cannot
pass to the outside of the pipe.
BRIEF DESCRIPTION OE' THE DRAWINGS
The object of the invention is explained in further
detail below with reference to embodiments shown in the
accompanying drawings, in which:
Figure 1 shows the roofing slab of the invention with
roof lead-through, seen in vertical section,
Figure 2 is a left side view thereof, partially broken
away and provided with a different upper end part,
Figure 3 shows the roofing slab with roof lead-through
in an exploded view, and
Figure ~ is an enlarged view of the section designated A
in Figure 1 with variant shown in dash-dot line.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
The roofing slab developed as roof lead-through is
shaped basically like the other roofing slabs in order to assure
an optically pleasing adaptation to the overall picture of the
roof.
A~pipe 2 serving, for instance, as vent passes through a
passage hole 3 in the roofing slab 1. The hole is located in the
region of the vertex of a dome 4 which is arched out towards the
top of~the roof and it is developed as a slot.
The dome 4 is arched in cupola-shape on its top. The
arch line ext0nds, seen in the direction of inclination of the
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roofing slab 1, around a radius point P. The radius point lies a
slight distance above the top of the roofing slab and intersects
the longitudinal center axis x-x of -the pipe 2.
Although the dome 4 could be entirely spherically shaped
it is, however, pulled in parallel to the longitudinal edges 1' of
the roofing slab 1, substantially to the dimension of the pipe
diameter, so that the dome side walls ~' which form an elongated
shaft rest snugly against the wall of the pipe 2 which is of
circular cross section. The ends of the shaft together with the
vertex region pass in a narrow arching into the side walls 4' of
the dome.
The cupola-shaped top of the dome 4 is gripped over by a
hood part 5 which is also passed through by the pipe 2. At least
the inner side o said hood which rests on the cupola-shaped top
side is developed in form--fitting manner. The hood part 5 can
thus be shifted, guided in the plane of inclination, practically
in the manner of a ball joint and , thus the angle of inclination
of the pipe with respect to the plane of the roofing slab can be
adjusted corresponding to the length of the passage hole 3.
For the narrow guidance application of the pipe 2, the
hood part 4 continues on the outside of the roof in a collar 6
which is adapted to the cross section of the pipe 2. The end edge
of the collar is cut flat, i.e. it extends perpendicular to the
longitudinal central axis x-x of the pi~e 2.
The pipe 2 o~ adjustable inclination which extends from
the bottom of the roofing slab 1 up to the top thereof is
developed in two parts. The pipe part which is visible above the
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collar 6 bears the reference number 2' while the lower pipe part,
which extends into the roof space, is designated 2".
The coupling place K which connects the two pipe parts
with each other is located above the hood part 5 or, more
precisely, within the region of the collar 6. Behind this collar
which hides the place of coupling from view, the upper pipe part
2' is screwed into the corresponding end of the lower pipe part
2". The upper pipe part 2' is provided for this purpose with a
corresponding external thread while the corresponding inner thread
lies in the end of the lower pipe part 2"~
In this way the upper pipe part 2' can not only be
attached by manual turning but if necessary it can also be
refitted. Thus an end piece which is open on top, provided with
ample venting slits and serving as cooking range exhaust (see
Figure l) can easily be replaced by an end piece which has a cap
(see Figure 2). Beyond this possibility of variation, a roof
lead-through which is not associated with the ventilation problem
can also be used, for example, an antenna line. In such case an
antenna hood having the corresponding attachment screw-thread is
then screwed in here.
Among other purposes for the supporting of the pipe 2 on
the collar 6, an annular shoulder 7 of the upper pipe part 2'
comes against the corresponding end edge 6' of this collar 6.
This~shoulder 7 is obtained by a wall offset. The shoulder-
forming projection corresponds essentially to the wall thickness
of the plpe or is slightly above. On the outside -the wall surface
of the pipe part 2' is flush with that of the collar 6.
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As an advantageous further development, the shoulder 7
and the screwability of the pipe parts are used to participate in
the formation of a displacement and locking device for the varying
of the inclination of the pipe 2. This is done by clamping the
dome 4 between the two pipe parts with inclusion of the hood part
5. In order to create the necessary support for this on the roof
panel bottom side with respect to the lower pipe part 2', holding
ribs 8 ex-tending on the outside beyond the outer wall of this pipe
part are formed on said pipe part~ These ribs are in diametrical
opposition at the same height to each other and extend axially.
for facilitated plug connection, the end which is directed towards
the inside of the roof forms a run-on bevel 9 (see Fig. 2). The
other end of the holding ribs 8 forms a convexly rounded end
surface 10 which extends into the plane of swing of the pipe.
The end surfaces 10 of the holding ribs 8 lie against
the bottom 11 of the roofing slab 1, namely in the region of the
dome side walls 4' which participate in forming the vertical guide
shaft. In the central tangent zone, these dome side walls 4' form
a mounting through 12 which is open in the direction of the shaft
and downward. The mounting through 12 has a trough bottom which
corresponds to the circular curvature of the end surface 10 but
which, as a result of the diverging course of the adjoining
through flanks, experiences in practice a funnel-shaped widening
the angle of which takes into account the region of displacement
of inclination of the pipe 2. In order to remain with the
relatively slight wall thickness, the mounting trough can be
produced by peripheral wall offset of the support-forming parts of
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the side walls 4'.
The arched end surface 10 extends transverse to the
longitudinal center axis of the pipe 2, the flanks of the support
trough 12 extending in the same manner. In this way, a hood-like
supporting of the pipe 2 is practically achieved on the bottom of
the roofing slab.
This and the further development to the effect that the
collar 6 protrudes beyond the end wall 13 of the lower pipe part
2" permit the roofing slab 1 hooked on the pipe to be pulled over
the shoulder 7 directed axially against the hood part 5 which
extends over it, so that Einally the collar 6 thereof is clamped
by its end wall 6' against the shoulder 7. The frictional
application between the inside of the hood part 5 and the outside
o the dome 4 can thus be varied up to complete clamping closure.
The collar is adapted to the corresponding displaceability of the
lower pipe part 2". The required securing against turning of the
lower pipe part 2" with respect to the upper pipe part 2' results
from the lower supporting engagement between the holding ribs 8
and the support trough 12. The axial clamping free-path y
obtained from the diEference in length explained can be noted from
Figure 4. The maximal clamping dimension is exhausted when the
edge 13 has come against the shoulder 7.
In order to obtain a tight closing between the two pipe
parts 2', 2" the lower end of the upper pipe part 2' is forked
with rotational symmetry. The collar and the threaded section of
the lower pipe part 2" enter into the downwardly open space 14
created in this manner. There is thus obtained here a multi-wall,
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stable attachment. The annular wall-like peripheral fork leg 15
acts like a protective screen. The joint is designated F.
Shoulder 7 and end wall 6' could for this purpose also be cut
eonically with upward direction convergence of their ring flanks.
To the lower end of the lower pipe part there is
connected an accordion body 16 as connecting hose for another
pipeline.
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