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US 5,566,740 AGranted
Sectional overhead door
AssigneeWayne-Dalton Corp.
InventorsWillis J. Mullet, Albert W. Mitchell
Life of this patent
Estimating the term…
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AssigneeWayne-Dalton Corp.
InventorsWillis J. Mullet, Albert W. Mitchell
Estimating the term…
A sectional door (20) having a plurality of panels (21, 22, 23, 24) including, a body portion (25) of the panels spacing and joining longitudinal edges (40, 50), one of the edges (40) between adjacent panels on a first panel having a substantially concave curvilinear surface (45) in vertical cross-section, the other of the edges (50) between adjacent panels on a second panel having a substantially planar surface (52) in vertical cross-section, longitudinally-spaced hinges (65) interconnecting the first and second panels for pivotal movement. The hinges include a first hinge element (66) having a first leaf (67) overlying and attached to one of the adjacent panels, a generally cylindrical first knuckle (72) at one edge of the first leaf, a through slot (73) in the first leaf proximate the first knuckle, a second hinge element (80) having a second leaf (85) overlying and attached to an adjacent panel, and a generally cylindrical second knuckle (81) at one edge of the second hinge element extending into the through slot and rotatable about the first knuckle. A panel (22) for sectional door (20) having a generally rectangular foam core (140, 240, 340), an inner surface (145, 245, 345) extending the longitudinal length of said foam core, and a recess (150, 250, 350) in the inner surface and the foam core extending the longitudinal length of the foam core. A bracket assembly (110) for the bottom (35) of the lower panel (24) of the door including, an L-shaped plate (111) overlying a portion of the inner surface (36) of the lower panel, a generally cylindrical sleeve (120) affixed on the plate for receiving a shaft (121) mounting one of the rollers (122), fasteners (115) for attaching the L-shaped plate to the lower panel positioned to underlie a portion of the cylindrical sleeve and the shaft, and cut-outs (125) in the cylindrical sleeve positioned substantially above the fasteners whereby the fasteners may be removed only when the shaft is not positioned in the cylindrical sleeve.
A pivotal connector in combination with a sectional door comprising, at least two adjacent panels, a first hinge element having a first leaf overlying a portion of one of said adjacent panels, spaced apertures in said first leaf for receiving fasteners to attach said first leaf to said one of said adjacent panels, a generally cylindrical first knuckle at one edge of said first leaf, a through slot in said first leaf proximate to said first knuckle, a second hinge element having a second leaf overlying the other of said adjacent panels, spaced bores in said second leaf for receiving fasteners to attach said second hinge element to said other of said adjacent panels, and a generally cylindrical second knuckle at one edge of said second hinge element extending into said through slot and rotatable about said first knuckle for controlled relative pivotal motion between said first hinge element and said second hinge element, said first knuckle having raised circumferential strips for engaging said second knuckle as bearing surfaces.
A pivotal connector in combination with a sectional door comprising, at least two adjacent panels, a first hinge element having a first leaf overlying and attached to one of said panels, said first leaf having longitudinal ends, a generally cylindrical first knuckle at one edge of said first leaf extending substantially the entire distance between said longitudinal ends, a through slot in said first leaf proximate to said first knuckle paralleling said first knuckle and terminating a distance inwardly of said longitudinal ends of said first leaf, a second hinge element having a second leaf overlying the other of said adjacent panels, first bores in said second leaf for receiving fasteners, and a generally cylindrical second knuckle at one edge of said second hinge element having a tongue extending into said through slot and rotatable about said first knuckle for controlled relative pivotal motion between said first hinge element and said second hinge element, said projecting tongue having extending tabs with second bores therein for receiving said fasteners to attach said second hinge element to said other of said adjacent panels.
A pivotal connector in combination with a sectional door comprising, at least two adjacent panels, a first hinge element having a first leaf overlying and attached to one of said panels, said first leaf having longitudinal ends, a generally cylindrical first knuckle at one edge of said first leaf extending substantially the entire distance between said longitudinal ends, a through slot in said first leaf proximate to said first knuckle paralleling said first knuckle and terminating a distance inwardly of said longitudinal ends of said first leaf, a second hinge element having a second leaf overlying and attached to the other of said adjacent panels, and a generally cylindrical second knuckle at one edge of said second hinge element having support members extending substantially the length of said first knuckle and having a tongue projecting from said support members and extending into said through slot and rotatable about said first knuckle for controlled relative pivotal motion between said first hinge element and said second hinge element.
Dependencies are inferred from the claim text.