SEWER BASKET AND ITS SUPPORT

PANIER D'EGOUT ET SUPPORT CONNEXE

English Abstract

The sewer basket is to be positioned at any selected level within a vertical sewer pipe having an interior surface and an opening at street level without in any way modifying the same. A basket support is provided comprising an expandable support for extending entirely around the interior surface of the sewer pipe and having at least one pair of opposite spaced free ends that define inturned ears through which a bolt extends and the ears are spread apart by nuts screwed on the bolt. For a sewer pipe of circular cross-section, the basket frame and the support frame are both of circular shape, the expandable frame having a single pair of spaced ears with a single bolt extending through the ears. For sewer pipes of quadrilateral shape, both the basket and the support frame are similarly quadrilateral, the support frame being made of two U-shaped sections each having opposite free ends defined by inturned ears and a bolt with nuts extending through each pair of ears. In another embodiment, the support frame is a telescopic tube with sewer engaging pads at both ends and with a pair of bolt and nuts tube expanding devices on each side of the tube.

French Abstract

Le panier d'égout doit être positionné à un niveau quelconque sélectionné dans une canalisation d'égout verticale ayant une surface intérieure et une ouverture au niveau d'une rue, sans modifier celle-ci. Un support de panier comprend un support extensible pouvant s'étendre complètement autour de la surface intérieure de la canalisation d'égout, et ayant au moins une paire d'extrémités libres espacées opposées, qui définissent des oreilles tournées vers l'intérieur, à travers lesquelles un boulon s'étend, et les oreilles sont séparées par des écrous vissés au boulon. Pour une canalisation d'égout de section transversale circulaire, le cadre de panier et le cadre de support sont tous deux de forme circulaire, le cadre extensible ayant une seule paire d'oreilles espacées avec un seul boulon s'étendant à travers les oreilles. Pour des canalisations d'égout de forme quadrilatère, le panier et le cadre de support sont également quadrilatères, le cadre de support étant fait de deux sections en forme de U ayant chacune des extrémités libres opposées définies par des oreilles tournées vers l'intérieur, et un boulon avec des écrous s'étendant à travers chaque paire d'oreilles. Dans un autre mode de réalisation, le cadre de support est un tuyau télescopique avec des plaques de prise d'égout aux deux extrémités, et avec une paire de dispositifs s'étendant dans le tuyau avec un boulon et des écrous de chaque côté du tuyau.

Claims

CLAIMS
The embodiments of the invention, in which an exclusive property or
privilege is claimed, are defined as follows:
1. The combination of a removable sewer basket with a sewer
basket support for retaining said basket at a selected level within a vertical
sewer
pipe having an interior surface and an opening at street level, said basket
including a basket frame, a filter screen secured to and closing said basket
frame, said basket support comprising an expandable support for extending
entirely around said interior surface of said sewer pipe, said support having
at
least one pair of opposite spaced free ends, an adjustable expansion device
joining said opposite ends to expand said support against said interior
surface of
said sewer pipe and to fix said support to said interior surface at the
selected
level below street level, said basket frame releasably resting on said
support, and
a handle device accessible at street level to position and place said basket
on
and to retrieve said basket from said basket support.
2. The combination as defined in claim 1, further including a
crossbar secured to opposite sections of said basket frame, said handle device
including a post, a handle at the upper end of said post, the lower end of
said
post attached to the middle of said crossbar.
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3. The combination as defined in claim 2, wherein an upright sleeve
is secured to the middle of said crossbar, the lower end of said post
releasably
fitted within and attached to said sleeve.
4. The combination as defined in claim 2, wherein an eye member
is secured to the middle of said crossbar and further including a hook member
formed at the lower end of said post and removably engaging said eye member.
5. The combination as defined in claim 1, wherein said support
includes a frame forming strip, said opposite ends formed by the ends of said
strip and including inturned perforated ears and said expansion device
includes a
bolt extending through and joining said ears and nuts screwed onto said bolts
and engaging said ears to spread said ears apart and retain said ears spaced
apart from each other.
6. The combination as defined in claim 1, wherein said support is
circular and has one said pair of opposite ends.
7. The combination as defined in claim 1, wherein said support has
a quadrilateral shape being made of two U-shaped sections with two of said
pair
of opposite ends.
8. The combination as defined in claim 2, wherein said crossbar is
straight and overlies said filter screen.
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9. The combination as defined in claim 2, wherein said crossbar is
angled at the center thereof, the central portions of said crossbar and of
said filter
screen being downwardly recessed relative to their outer portions.
10. The combination as defined in claim 1, wherein said support
has inwardly directed ears on which said basket removably rests.
11. The combination as defined in claim 5, further including a
crossbar secured to opposite portions of said basket frame, said handle device
including a post, a handle at the upper end said post, the lower end said post
attached to the middle of said crossbar.
12. The combination as defined in claim 11, wherein an upright
sleeve is secured to the middle of said crossbar, the lower end of said post
releasably fitted within and attached to said sleeve.
13. The combination as defined in claim 11, wherein an eye
member is secured to the middle of said crossbar and further including a hook
member formed at the lower end of said post and removably engaging said eye
member.
14. The combination as defined in claim 5, wherein said support is
circular and has one said pair of opposite ends.
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15. The combination as defined in claim 5, wherein said support
has a quadrilateral shape being made of two U-shaped sections with two of said
pair of opposite ends.
16. The combination as defined in claim 14, wherein said crossbar
is straight and overlies said filter screen.
17. The combination as defined in claim 14, wherein said crossbar
is angled at the center thereof, the central portion of said crossbar and of
said
filter screen being downwardly recessed relative to their outer portions.
18. The combination as defined in claim 15, wherein said crossbar
is straight and overlies said filter screen.
19. The combination as defined in claim 15, wherein said cross bar
is angled at the center thereof and overlies said filter screen, the central
portion
of said cross bar and of said filter screen being downwardly recessed relative
to
the their outer portions.
11

Description

CA 02296034 2000-O1-17
TITLE OF THE INVENTION
Sewer basket and its support.
FIELD OF THE INVENTION
The present invention relates to sewer baskets that are removably
mounted within a vertical sewer opening at street level, commonly known as
storm sewers.
BACKGROUND OF THE INVENTION
These sewer baskets are used to filter coarse material such as
branches, leaves, gravel and the like so as to prevent clogging of the sewer
network. The sewer baskets are removed and cleaned from time to time and
make sewage more easy to filter at the filtration station to which the sewer
network is connected. The baskets are usually supported within the vertical
sewer pipe at about three feet below street level and are removably supported
by
devices that are difficult to install or which require modification of the
surface of
the sewer pipe. For instance angle irons can be permanently secured to the
sewer surface by screws driven into the sewer wall or as described in U.S.
Patent
530,816 to Wright entitled "Manhole for sewers" and dated December 11, 1894, a
metal sleeve has to be inserted into the manhole with an inturned rim at its
lower
end on which the frame of the sewer basket is releasably supported. Another
example of a support system for a sewer basket is found in U.S. Patent 122,209
dated December 26, 1871 entitled "Improvement in sewer traps and catch
basins" to Ashman et al. In this patent the sewer wall is modified at the
desired
level to provide a ledge all around the sewer pipe on which the sewer basket
releasably rests.
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CA 02296034 2001-09-13
OBJECTS OF THE INVENTION
The general object of the present invention is to provide a sewer
basket support that can be releasably secured to the sewer wall at any
adjustable
level and without in any way modifying the structure of the sewer wall.
Another object of the present invention is to provide a sewer basket
support that can be shaped to fit sewers of various cross-sectional shapes.
Another object of the present invention is to provide a sewer basket
of a simple, inexpensive and yet long-lasting construction.
Another object of the present invention is to provide a sewer basket
support frame which can be easily fitted to the sewer wall at an adjustable
level
and using standard tools and within a minimum of time.
SUMMARY OF THE INVENTION
This invention comprises the combination of a removable sewer
basket with a sewer basket support for retaining said basket at a selected
level
within a vertical sewer pipe having an interior surface and an opening at
street
level, said basket including a basket frame, a filter screen secured to and
closing
said basket frame, said basket support comprising an expandable support for
extending entirely around said interior surface of said sewer pipe, said
support
having at least one pair of opposite spaced free ends, an adjustable expansion
device joining said opposite ends to expand said support against said interior
surface of said sewer pipe and to fix said support to said interior surface at
the
selected level below street level, said basket frame releasably resting on
said
support, and a handle device accessible at street level to position and place
said
basket on and to retrieve said basket from said basket support.
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CA 02296034 2001-09-13
Preferably, there is a crossbar secured to opposite sections of said
basket frame, said handle device including a post, a handle at the upper end
of
said post, the lower end of said post attached to the middle of said crossbar.
An upright sleeve is secured to the middle of said crossbar, the
lower end of said post releasably fitted within and attached to said sleeve.
Alternately, an eye member is secured to the middle of said
crossbar and further including a hook member formed at the lower end of said
post and removably engaging said eye member.
The support consists of a frame forming strip, said opposite ends
formed by the ends of said strip and consisting of inturned perforated ears
and
said expansion device includes a bolt extending through and joining said ears
and nuts screwed on said bolts and engaging said ears to spread said ears
apart
and retain said ears in adjusted spaced apart position.
The support is circular and has only one pair of opposite ends.
Alternately, the support has a quadrilateral shape being made of
two U-shaped sections with two pairs of opposite ends. The crossbar may be
straight or downwardly angled and overlies the filter screen.
Preferably, the support has inwardly directed ears on which said
basket removably rests.
Alternately, the support is a telescopic, straight tube including an
inner and an outer tube sections, transversely opposite perforated ears
outwardly
extending from and secured to said inner and outer tube sections respectively
on
each side thereof, there being an expansion device on each side of said tube,
each device including a bolt extending through and joining a pair of ears and
nuts
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CA 02296034 2001-09-13
screwed on said bolts on each side of said ears to spread said ears apart and
retain said telescopic tube sections in telescopically adjusted position.
BRIEF DESCRIPTION OF THE DRAWINGS
In the annexed drawings, like reference characters indicate like
elements throughout.
Figure 1 is a perspective view partly in section of a street with a
vertical sewer shown in longitudinal section inside which is shown an exploded
perspective view of a first embodiment of the sewer basket of the invention
together with the support frame for the same, the Figure also showing the
normal
grate or manhole cover to close the top of the sewer;
Figure 2 is a top view of first embodiment of this basket and its
support frame;
Figure 2a is a top view of a second embodiment of the assembly of
the sewer basket and of its support frame to fit a sewer wall of quadrangular
shape;
Figure 2b is a top view of the basket of Figure 2a but with another
embodiment of the support frame;
Figure 3 is an end view of the support frame bolt and nuts system
taken along line 3-3 of Fig. 2 to expand the same against the sewer wall and
used for the embodiments of Figs. 2 and 2a;
Figure 4 is a partial perspective view showing one embodiment for
connecting the crossbar of the sewer basket with a post having a handle at its
upper end;
Figure 4a shows another embodiment of the means for connecting
the crossbar of the basket with the handle post;
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CA 02296034 2001-09-13
Figure 5 is a section taken along line 5-5, of Fig. 2;
Figure 5a is an elevation of the assembly of the invention, the
basket being modified with respect to Figs. 1 and 5; and
Figure 6 is a cross-section taken along line 6-6 of Fig. 2b.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring to Fig. 1, there is shown a basket 2 releasably supported
on a basket support 4 within the upper part of a vertical sewer pipe P which
opens at street level and has an interior surface, the street being indicated
at S
and normally closed by a manhole cover M. The basket 2 includes a basket
frame 6 which is circular and formed of a cylindrical flat strip; a filter
screen 8
closes the basket frame 6 being secured thereto all around the lower edge of
the
same. A straight crossbar 10 is secured to the basket frame 6 and extends
across the same; the crossbar 10 overlies the filter screen 8 as shown in Fig.
5.
The crossbar 10a may be angled at its center as shown at 10a for basket 2a in
Fig. 5a. An upright sleeve 12 or 12a is secured to the center of the crossbar
10
or 10a, the sleeve terminating at approximately the top edge of the basket
frame
6 or 6a as shown in Figs. 5 and 5a respectively. A post or rod 14 has its
lower
end 16 fitted within sleeve 12 or 12a by means of a cotter pin 18 as shown in
Fig. 4. As shown in Fig. 4a, sleeve 12 can be replaced by an eye 22 to be
releasably engaged by a hook 24 formed at the lower end of post 14a. The top
end of the post 14 is formed with a handle 20 which normally extends just
underneath the manhole cover, for easy removal of the filled basket and for re-
inserting the same in operative position within the sewer pipe P.
Basket support 4 is expandable for supporting the basket 2 at any
selected level within the sewer pipe P and this without in any way modifying
the
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CA 02296034 2001-09-13
interior surface of the sewer pipe. Basket support 4 includes a flat strip 26
that is
bent into a circular shape with spaced opposite ends each formed by an
inturned
ear 28. The two ears 28 are perforated and a bolt 30 extends therethrough and
spans the space between the ears 28. Two pairs of nuts 32 are screwed on bolt
30 on each side of the respective ears 28 so as to adjust the spacing between
the ears 28 and lock the latter at the desired adjusted spacing. Therefore the
basket support 4 can be first inserted within the sewer pipe P and then
expanded
by means of the bolt 30 and nuts 32 using standard tools. The support strip 26
is
provided with a basket frame engaging ears 34 which are inwardly folded from
top edge 36 of strip 26. The frame 6 of the basket 2 simply rests on the ears
34.
If the sewer pipe P has a quadrilateral cross-section as is often
found in sewer pipe manholes, then the basket and its basket support can be
shaped to fit the cross-sectional shape of the sewer pipe, as shown in Fig.
2a.
There is shown a basket frame 2a of rectangular cross-sectional shape, formed
as in the previous embodiment of a rectangular flat strip frame 6a to the
under
side of which is secured a similarly shaped filter screen 8a which is overlaid
by
crossbar 10. Here again a post 14 is provided with a handle 20 at its upper
end
and a lower end adapted to be connected to the center of the crossbar 10 as by
the systems of the Fig. 4 or 4a.
The basket support 4a is formed of two U-shaped sections 38, the
opposite spaced ends of which are defined by inturned ears 40; each pair of
ears
is connected by a bolt 30 with nuts 32 to adjust the spacing between each of
the
two pairs of ears and therefore to expand the basket support and force the
same
against the sewer pipe interior surface to form a strong support for the
basket.
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CA 02296034 2001-09-13
Figs. 2b and 6 show another embodiment of the expandable basket
support. This support 4b is shown to support basket 2a of Fig. 2a but could as
well support the circular basket 2 of Fig. 2.
Support 4b is a telescopic tube made of an inner tube section 42
fitted within an outer tube section 44. The outer ends of sections 42, 44
carry
sewer engaging pads 46. Four ears 48 having a right angle shape are secured in
transversely opposite pairs to opposed sides of inner and outer tube sections
42,
44 respectively. The outwardly extending portions of ears 48 have a hole
through
which extends a bolt 50 on which are screwed two pairs of nuts 52, 54 the
inner
nuts 52 of each pair on each side of tube sections 42, 44 are screwed to push
pads 46 against the sewer pipe walls and outer nuts 54 are then screwed to
lock
the tube section 42, 44 in adjusted position. Basket 2 or 2a is then simply
deposited on support 4b.
Preferably, both the basket 2 and the basket support 4 are entirely
either made out of rigid and highly resistant non-corrosive material or
protected
against corrosion from any suitable protective coating.
7

Representative Drawing