| 摘要 |
A sectional door (20) having a plurality of panels (21, 22, 23, 24) including, a body portion (25) of the panels spacing and joining longitudina l 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, th e 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 knuckl e (72) at one edge of the first leaf, a through slot (73) in the first leaf proxima te 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 (8 1) 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) havi ng 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) affixe d on the plate for receiving a shaft (121) mounting one of the rollers (122), fastene rs (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 ma y be removed only when the shaft is not positioned in the cylindrical sleeve. Conveyor apparatus (400, 500) for the continuous production of foam-cored door panel material (22') having a first conveyor (410, 501) having a first panel- engaging surface (426, 503) lying in a plane for engaging the planar skin on one side of the panel material, a drive assembly (415, 510) for driving the first conveyor a t a selected speed, a second conveyor (402, 502) having second and third panel- engaging surfaces (451, 464; 535, 540) for engaging spaced skin surfaces (146,146) and an offset skin surface (150), respectively, on the other side of the pan el material, and a drive assembly (435, 520) for driving at least one of the second and third panel-engaging surfaces of the second conveyor at substantially th e selected speed of the first conveyor.
|
