Compact track system with rear mount counterbalance system for sectional doors
AssigneeWayne-Dalton Corp.
InventorsWillis J. Mullet, Derek S. Paquette
Life of this patent
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AssigneeWayne-Dalton Corp.
InventorsWillis J. Mullet, Derek S. Paquette
Estimating the term…
An overhead door system including, a sectional door (D") having top, bottom, and intermediate panels (321, 324, 322) hinged for moving between a closed vertical position and an open horizontal position, top rollers (332) on the top panel, bottom rollers (341) on the bottom panel, intermediate rollers (337) positioned between the top rollers and the bottom rollers, inner vertical tracks (351) for engaging the intermediate rollers, transition tracks (353) connected to the inner vertical tracks and curving through an angle of approximately ninety degrees for directing the travel of the intermediate rollers, horizontal tracks (355) extending from the transition tracks for engaging the intermediate rollers to support the door in the open horizontal position, and outer vertical tracks (357) for guiding the bottom rollers in a substantially vertical path paralleling said inner vertical tracks and having upper extremities (357') that are inwardly offset in the direction of the transition tracks.
An overhead door system comprising, a sectional door having top, bottom, and intermediate panels hinged for moving between a closed vertical position and an open horizontal position, top rollers on said top panel, bottom rollers on said bottom panel, intermediate rollers positioned between said top rollers and said bottom rollers, inner vertical tracks for engaging said intermediate rollers, transition tracks connected to said inner vertical tracks and curving through an angle of approximately ninety degrees for directing the travel of said intermediate rollers, horizontal tracks extending from said transition tracks for engaging said intermediate rollers to support the door in the open horizontal position, and outer vertical tracks for guiding said bottom rollers in a substantially vertical path paralleling said inner vertical tracks and having upper extremities that are inwardly offset in the direction of said transition tracks.
An overhead door system according to claim 6, wherein said upper extremities of said outer vertical tracks terminate proximate to said upper horizontal tracks.
An overhead door system comprising, a sectional door having top, bottom, and intermediate panels hinged for moving between a closed vertical position and an open horizontal position, top rollers on said top panel, bottom rollers on said bottom panel, intermediate rollers positioned between said top rollers and said bottom rollers, inner vertical tracks for engaging said intermediate rollers, transition tracks connected to said inner vertical tracks and curving through an angle of approximately ninety degrees for directing the travel of said intermediate rollers, lower horizontal tracks extending from said transition tracks for engaging said intermediate rollers to support the door in the open horizontal position, outer vertical tracks for guiding said bottom rollers in a substantially vertically path when moving between said open horizontal position and said closed vertical position of the door and upper horizontal tracks for guiding said top rollers on said top panel.
An overhead door system comprising, a sectional door having top, bottom, and intermediate panels hinged for moving between a closed vertical position and an open horizontal position, top rollers on said top panel, bottom rollers on said bottom panel, intermediate rollers positioned between said top rollers and said bottom rollers on said intermediate panels, horizontal tracks for guiding said top rollers on said top panel and having door seating assemblies for securely seating said top panel in the closed vertical position, and vertical tracks for guiding said bottom rollers and having upper ends that terminate proximate to said horizontal tracks and inwardly of said door seating assemblies.
Dependencies are inferred from the claim text.