Patent ID: 9447626
Filing Date: 2016-09-20
CPC Classification: B21D,E06B,Y10T

Claim Text:
1. A method for forming a sill pan, said method comprising: measuring a width and length of an opening sill to be sealed; cutting a piece of flexible sill pan material based on the measured opening sill; and creating fold lines and cuts in said piece to form the sill pan; wherein said piece is rectangular and has a first surface, a second surface, an inner edge, an outer edge, and a pair of side edges, where the inner edge and the outer edge are parallel to each other and perpendicular to the side edges; creating a first fold line on said first surface that defines the height of a back dam at a first distance measured from the inner edge; creating a set of two second fold lines on said first surface that are perpendicular to said first fold line and are parallel to said side edges at a second distance measured from both of said side edges: and creating a third fold line on said first surface parallel to said first fold line at a third distance as measured from the outer edge that defines a width of a seat of said sill pan for seating a window frame, and a downward flap; cutting said set of two second fold lines that extend from the outer edge until the third fold line; and cutting said first fold line from opposing sides from said side edges until said second fold lines to form opposing ends.