Patent ID: 8292541
Filing Date: 2012-10-23
Classification: E03F

Abstract:
1. A frame for retaining a trench cover over a drainage trench, the frame comprising: a substantially vertical support member; a bearing flange extending substantially perpendicular inwardly from the support member for supporting the cover over the drainage trench, with the cover laying on the bearing flange adjacent to the support member, the hearing flange including at least one aperture for receiving a fastener that secures the cover to the bearing flange; and a chute positioned below the aperture and including an opening directed toward the trench, wherein when the frame is installed on the drainage trench the fastener is removable from the at least one aperture and debris collected through the aperture is directed toward the trench through the chute to maintain the at least one aperture open so that the fastener can be re-positioned in the at least one aperture.