Sectional door panel
AssigneeWayne-Dalton Corp.
InventorWillis Mullet
Life of this patent
Estimating the term…
Abstract
A sectional door movable between a closed vertical position and an open horizontal position having, a plurality of adjacent panels joined by hinges for articulation in moving between the closed vertical position and the open horizontal position, each of the panels having a facer defining the perimeter of the panels by longitudinal edge extensions terminating in ends, the hinges and the longitudinal edge extensions configured to maintain a clearance between the longitudinal edge extensions of the adjacent panels during articulation thereof, and an up-bow in the longitudinal edge extensions to prevent sagging that could result in interference between longitudinal edge extensions of the adjacent panels when the panels are substantially in the horizontal position.
Claims19
A sectional door movable between a closed vertical position and an open horizontal position comprising, a plurality of adjacent panels joined by hinges for articulation in moving between the closed vertical position and the open horizontal position, each of said panels having a facer defining the perimeter of said panels by longitudinal edge extensions terminating in ends, said hinges and said longitudinal edge extensions configured to maintain a clearance between said longitudinal edge extensions of said adjacent panels during articulation thereof, and an up-bow in said longitudinal edge extensions to prevent sagging that could result in interference between longitudinal edge extensions of said adjacent panels when said panels are substantially in the horizontal position.
A sectional door panel for a sectional door system comprising, a generally rectangular facer defining the perimeter of the panel, longitudinal edges extending the length of said facer, ends of said facer at the termination of said longitudinal edges, said longitudinal edges having projecting extensions extending away from said facer, and an out-bow in said facer and longitudinal edges extending in a direction opposite said projecting extensions of said longitudinal edges, whereby said out-bow assists in preventing distortion of the panel when positioned in certain orientations.
Dependencies are inferred from the claim text.