DRAIN GRATE SYSTEM AND METHOD

摘要

A drain grate system can be installed in a curbside or storm drain to block the passage of debris while allowing liquid to flow into the drain. The drain grate system can open in response to a high flow rate to allow liquid and debris to flow into the drain. A locking mechanism can maintain the drain grate system in a closed and locked position and can unlock in response to a predetermined amount of force of a fluid flow.

主权项

1. A drain grate system for positioning at a drain and to control fluid flow into the drain, the drain grate system comprising:
a frame configured to be fixed in position with relation to a drain; at least one axle; a grate having a curved top, the grate pivotally coupled to the frame through the at least one axle at the curved top, the grate configured to filter flows of liquid therethrough and to pivot between a closed position and an open position; a locking mechanism biased to lock the grate in the closed position, the locking mechanism comprising:
a force plate coupled to the grate and configured such that a flow of liquid acting upon the force plate causes a portion of the force plate to move away from the grate thereby unlocking the grate and allowing the grate to move to the open position.