The invention relates to a gutter system (1) comprising at least one frame unit (10), at least one cover unit (20) and at least one securing element (30), wherein the frame unit (10) comprises at least one receiving area (12) for arranging the cover unit (20), and wherein the securing element (30) is adapted to engage in the cover unit (20) and to releasably engage in the receiving area (12) so the cover unit (20) can interlock in the receiving area (12) of the frame unit (10). The invention also relates to a cover unit (20) and a securing element (30).

An inlet filter and method of use are disclosed. In one aspect, the inlet filter comprises a frame, filter material, a feed stream inlet, and a filtrate outlet. The frame is configured so an exterior of the frame is shaped like a wedge. In another aspect, the method comprises inserting an inlet filter into a storm sewer inlet. The inlet filter can be one of a plurality of inlet filters inserted into the storm sewer inlet, the filters cooperating to filter a feed stream entering the storm sewer inlet. In a third aspect, a system comprises a plurality of inlet filters configured to be coupled together to filter a feed stream to a storm sewer inlet. The system can be configured so that the width of the plurality of filters is adjustable. For example, a first inlet filter and second inlet filter can be slidably engaged with a connecting filter.

An inlet filter includes a frame, filter material, a feed stream inlet, and a filtrate outlet. The frame includes a thick portion and a narrow portion. The frame also includes a spring-comprising portion having an adjustable height. A method includes inserting an inlet filter into a storm sewer inlet. The inlet filter can be one of a plurality of inlet filters inserted into the storm sewer inlet, the filters cooperating to filter a feed stream entering the storm sewer inlet. A system includes a plurality of inlet filters configured to be coupled together to filter a feed stream to a storm sewer inlet. The system can be configured so that the width and the height of the plurality of filters is adjustable. For example, a first inlet filter and second inlet filter can be slidably engaged with a connecting filter.

An inlet filter and method of use are disclosed. In one aspect, the inlet filter comprises a frame, filter material, a feed stream inlet, and a filtrate outlet. The frame is configured so an exterior of the frame is shaped like a wedge. In another aspect, the method comprises inserting an inlet filter into a storm sewer inlet. The inlet filter can be one of a plurality of inlet filters inserted into the storm sewer inlet, the filters cooperating to filter a feed stream entering the storm sewer inlet. In a third aspect, a system comprises a plurality of inlet filters configured to be coupled together to filter a feed stream to a storm sewer inlet. The system can be configured so that the width of the plurality of filters is adjustable. For example, a first inlet filter and second inlet filter can be slidably engaged with a connecting filter.

An inlet filter and method of use are disclosed. In one aspect, the inlet filter comprises a frame, filter material, a feed stream inlet, and a filtrate outlet. The frame is configured so an exterior of the frame is shaped like a wedge. In another aspect, the method comprises inserting an inlet filter into a storm sewer inlet. The inlet filter can be one of a plurality of inlet filters inserted into the storm sewer inlet, the filters cooperating to filter a feed stream entering the storm sewer inlet. In a third aspect, a system comprises a plurality of inlet filters configured to be coupled together to filter a feed stream to a storm sewer inlet. The system can be configured so that the width of the plurality of filters is adjustable. For example, a first inlet filter and second inlet filter can be slidably engaged with a connecting filter.

A drain assembly for providing a drain passage for fluid flow from a surface to the drainpipe of a plumbing system. The surface would typically be that of a structure such as that of a floor, a floor of a shower or floor of a bathtub. The drain assembly includes a multi-channel cove wherein each flow channel is configured or curved in such a way to prevent the passage of a ligation (e.g., wire, cord, or rope) through the channels to allow the ligation to be tied to the cover.

A drain assembly for providing a drain passage for fluid flow from a surface to the drainpipe of a plumbing system. The surface would typically be that of a structure such as that of a floor, a floor of a shower or floor of a bathtub. The drain assembly includes a multi-channel cove wherein each flow channel is configured or curved in such a way to prevent the passage of a ligation (e.g., wire, cord, or rope) through the channels to allow the ligation to be tied to the cover.

An inlet filter and method of use are disclosed. In one aspect, the inlet filter comprises a frame, filter material, a feed stream inlet, and a filtrate outlet. The frame is configured so an exterior of the frame is shaped like a wedge. In another aspect, the method comprises inserting an inlet filter into a storm sewer inlet. The inlet filter can be one of a plurality of inlet filters inserted into the storm sewer inlet, the filters cooperating to filter a feed stream entering the storm sewer inlet. In a third aspect, a system comprises a plurality of inlet filters configured to be coupled together to filter a feed stream to a storm sewer inlet. The system can be configured so that the width of the plurality of filters is adjustable. For example, a first inlet filter and second inlet filter can be slidably engaged with a connecting filter.

The access cover includes one or more sensors disposed at the underside thereof to measure the height of the water and/or sediment in a drain gully.