| 主权项 |
1. A gutter debris cover comprising:
an elongate first screening element adapted to be installed across a top opening of a gutter, said first screening element having a longitudinal axis, a first end, a second end, and a plurality of first apertures adapted to allow fluid to flow therethrough into the gutter, each first aperture having a first axis extending generally parallel to the longitudinal axis of said first screening element and a second axis extending generally transversely to said first axis of said first aperture, said first axis being equal to or longer than said second axis, said first screening element extending transversely in a generally undulating manner between said first end and said second end of said first screening element such that said first screening element includes one or more elongate ridges and one or more elongate valleys that extend generally parallel to said longitudinal axis of said first screening element; a second screening element overlying said first screening element, said second screening element including a first end, a second end and a plurality of second apertures, said second apertures of said second screening element have smaller open areas than the open areas of said first apertures of said first screening element, said second screening element being supported by one or more of said ridges of said first screening element and spaced apart from one or more of said valleys of said first screen element such that an open elongate channel is respectively formed between each said valley of first screening element and said second screening element, each said open elongate channel having a transverse width between adjacent ridges that is longer than the distance between adjacent open elongate channels; and a first clamping member coupling said second screening element to said first end of said first screening element. |
