Storm water filter and components thereof and methods of installation and use
AssigneeEHL Limited
InventorsMichael Morton Hannah, Gregory Paul Yeoman, Gary John Lawford, Nicholas Alan Vigar
Life of this patent
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Abstract
A storm water drain filter including a collapsible frame supporting a filter bag. The filter may be installed in a stormwater drain pit to capture contaminants and particulate matter before it enters a stormwater drain. The collapsible frame is light weight, compact, simple and inexpensive. The filter bag is secured to the frame so as to maintain its shape and avoid deformation. There is also disclosed a method of installing a stormwater drain filter in a stormwater drain pit to provide an effective seal between the stormwater drain filter and the pit.
Claims56
A collapsible frame for supporting a storm water drain bag including a plurality of rigid elements that may be assembled to form a rigid self supporting frame and disassembled into a collapsed form for transport.
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A storm water filter bag having a base and a plurality of side walls joined at corners including attachment elements at the corners positioned for engagement to a supporting frame such that as the bag fills bulging of the side walls of the bag is resisted by the attachment elements retaining the side walls in tension between the frame.
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A storm water drain filter including:
- a. a collapsible frame consisting of a plurality of rigid elements that may be assembled to form a rigid frame and disassembled into a collapsed form for transport;
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- b. a bag having connectors positioned about its periphery for attachment to the frame, when assembled, so as to maintain the shape of the bag in use.
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Dependencies are inferred from the claim text.