Receptacles – Receptacle having flexible – removable inner liner
Reexamination Certificate
1999-04-02
2001-03-13
Castellano, Stephen (Department: 3727)
Receptacles
Receptacle having flexible, removable inner liner
C220S004160, C220S004170, C220S565000
Reexamination Certificate
active
06199712
ABSTRACT:
This invention relates to a liquid storage container of the type suitable for storing large quantities of liquid such as manure in a container which can have an open top.
BACKGROUND OF THE INVENTION
Generally storage containers of this type are formed from a cylindrical wall of corrugated steel which is bolted to a horizontal concrete footing or base. A coating can be applied on the inside surface of the wall and on the concrete base to provide a waterproof layer to prevent escape of the liquid. In alternative arrangements, a liner is applied in the inside of the wall and over the concrete base. It has also been proposed that the footing comprise simply a concrete ring.
However these constructions are relatively expensive particularly in the large size which is necessary for large scale liquid storage suitable for hog plants and the like.
SUMMARY OF THE INVENTION
It is one object of the present invention, therefore, to provide an improved liquid storage container.
According to one aspect of the invention there is provided a liquid storage container comprising:
a cylindrical wall formed from a plurality of connected panels to define a generally horizontal top edge and a generally horizontal bottom edge surrounding an area of ground surface inside the wall;
a plurality of vertical posts connected to the wall at spaced positions around the wall;
a plurality of ground anchors each having a vertical shaft and a helical flight on the shaft, the shaft and the flight being arranged to be screwed into the ground, each anchor being connected at its upper end to a respective one of the posts;
and an impermeable liner lying over the area of ground surface inside the wall and having a skirt portion attached to the wall.
Preferably the wall is formed from corrugated steel panels bolted together and bolted to the posts.
Preferably the skirt portion is attached to the wall by an adhesive sealant material at a position on the wall spaced upwardly from the bottom edge.
Preferably there is provided an attachment band at the upper edge of the skirt portion and bolted to the wall.
Preferably each post has a horizontal plate at the bottom end thereof which is attached to the shaft of the ground anchor.
Preferably the ground anchor includes a screw threaded portion for screw height adjustment of the plate.
Preferably there is provided a reinforcing hoop member connecting the posts at a position adjacent the top edge of the wall.
Preferably there is provided a reinforcing hoop member comprises a tubular member which is attached to each of the posts by a pair of clamps.
Preferably the posts each comprise a channel member having an open face facing outwardly of the wall and an inner face opposite to the open face which is bolted to the wall.
The construction therefore avoids the necessity for any footing of cast concrete or the like and the storage container is applied directly to the ground surface simply by initially excavating the ground surface to a generally horizontal level, by inserting the ground anchors at the required positions around the base of the wall, by levelling the height of the ground anchors by adjustment of a nut on the screw thread portion at the top of the anchor and by applying the posts and wall construction directly to the anchors. The area around the base of the wall can then be backfilled. The liner is applied directly to the ground without the necessity of any concrete base. The bituminous layer on the inside surface of the wall is relatively inexpensive and provides a sealing effect and anti-corrosion effect. The skirt portion of the bottom liner is attached by adhesive and clamping plate to the wall to prevent the escape of the liquid around the outside of the liner.
This construction is therefore relatively simple and therefore relatively inexpensive. The container also can be dismantled and reassembled at a new site without incurring a high assembly cost. Leakage can be readily repaired by simply applying an additional layer of the bituminous coating to a cleaned section of the coating where a leakage is suspected.
REFERENCES:
patent: 2378159 (1945-06-01), Royer
patent: 3225362 (1965-12-01), Barrera
patent: 3409916 (1968-11-01), Billig et al.
patent: 3460705 (1969-08-01), Green
patent: 3793786 (1974-02-01), Jahnke
patent: 3990600 (1976-11-01), Rossitto et al.
patent: 4240562 (1980-12-01), Holschlag
patent: 4436214 (1984-03-01), Henderson
patent: 5083327 (1992-01-01), Gillebaard
patent: 5358209 (1994-10-01), Ward
Battison Adrian D.
Castellano Stephen
Thrift Murray E.
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