Drain filter support

DETAILED DESCRIPTION The invention is a modification to the known DRAIN DIAPER.
RTM.
drain filter to enable the filter to be used in drains with the need to support the filter about the entire periphery of the grate.
The modification involves the formation of one or more loops on one or more edges of the filter and inserting a spring loaded rod in the loop so that the rod supports the side in the drain housing.
In one embodiment of the invention, this support also creates a dam of filter material to prevent debris from entering the mouth of a curb drain.
The present invention supports a catch basin insert or filter in an open type curb inlet storm drain found on streets and in parking lots.
Catch basin filters and inserts are designed to collect coarse sediments, oil, grease and debris from storm water runoff.
Such filters require support on all four sides of a grate using the weight of the grate.
The present invention attaches such a filter or insert inside a curb inlet storm sewer where only three sides of a grate are available for support.
The invention may also be used to support the insert or filter within the drain vault without the need to support the insert using the weight of the grate.
The present invention modifies the filter by creating a reinforced pocket on one or more side length of the filter/insert.
The pocket(s) accommodates a spring-loaded adjustable heavy-duty rod.
The rod is placed inside the pocket and adjusted in length to fit inside the curb inlet drain and/or inside the vault.
The rod is then positioned against each sidewall inside the curb drain or vault so that it is secured tightly against the sidewalls.
The rod may be adjustable in length and in spring force exerted within the curb drain or the vault.
The other sides of the filter without the pockets are supported by the weight of the grate.
The present invention also provides a vertical barrier or dam on the open curbside of the catch basin to prevent debris from falling behind the filter/insert into the basin