# US 12,760,595 B2 · Refeed structure and roll-up door assembly > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,760,595 B2 - Document ID: US12760595B2 - Status: Granted - Kind: B2 - Application number: 18/667,356 - Filed: 2024-05-17 - Published: 2024-11-21 - Granted: 2026-10-13 - Earliest claimed: 2023-05-18 - Assignees: ASI Doors, Inc. - Applicants: ASI Doors, Inc. - Inventors: George F. Balbach; Jonathon M. Haggerty - Web page: https://patentgrep.com/patent/US12760595B2 ## CPC - E06B 9/58: Guiding devices - E05D 15/165: {Details, e.g. sliding or rolling guides (E05D15/18 - E05D15/24 take precedence)} - E06B: FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES (shades or blinds for greenhouses A01G9/22; curtains A47H; lids for car boots or bonnets B62D25/10; skylights E04B7/18; sunshades, awnings E04F10/00) - E05D: HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS (pivotal connections in general F16C11/00) ## Abstract A refeed block for refeeding a displaced edge of a roll-up door into the rail of a refeed assembly. The refeed block has two guide blocks placed at an angle to one another and each has a low coefficient of friction such that the lateral edge of the roll-up door can glide over the guide block with virtually no drag from the guide block. ## Claims ### Claim 1 A refeed structure for use with a roll-up door comprising: a refeed housing, the housing having a front face, a first side, a second side, and a bottom; a substantially vertical slot defined in the housing, the slot separating the first housing side from the second housing side, the slot having a width and extending from the front face of the housing to a point in the housing and terminating at a bottom point of the housing; a substantially vertical first opening defined in the housing, the first opening being cylindrical in shape running vertically at the point in the housing where the slot ends and, at such end, the first opening has a diameter that is greater than the width of the slot; a vertical second opening defined in the housing, the second opening disposed at the bottom of the housing and forming acutely angled V-shaped structure diverging away from a vertical plane from the first opening and having opposing surfaces; and a pair of immovable guide blocks, one of the guide blocks fastened to one of the surfaces of the second opening and one of the guide blocks fastened to the opposing surface. ### Claim 2 (depends on 1) The refeed structure of claim 1 further comprising a back portion connecting the first housing side to the second housing side to form a unitary structure. ### Claim 3 (depends on 1) The refeed structure of claim 1 further comprising guide block fasteners that fasten the guide blocks to each of surfaces of the second opening from points outside the housing. ### Claim 4 (depends on 1) The refeed structure of claim 1 wherein an outer surface of each of the guide blocks comprises a rounded circumferential edge. ### Claim 5 (depends on 4) The refeed structure of claim 4 wherein the circumferential edge of each of the guide blocks is chamfered. ### Claim 6 (depends on 4) The refeed structure of claim 4 wherein each of the guide blocks has a low coefficient of friction. ### Claim 7 A refeed structure for use with a roll-up door, the roll-up door comprising a central door panel flanked by two lateral edges, the refeed structure comprising: a refeed housing, the housing having a front face, a first side, a second side, and a bottom; a substantially vertical slot defined in the housing, the slot separating the first housing side from the second housing side, the slot having a width and extending from the front face of the housing to a point in the housing and terminating at a bottom point of the housing, the vertical slot further being configured to receive one of the lateral edges and a portion of the central door panel nearest the lateral edge; a substantially vertical first opening defined in the housing, the first opening being cylindrical in shape and running vertically at the point in the housing where the slot ends and having a diameter that is greater than the width of the slot, the first opening being configured to receive one of the lateral edges of the roll-up door; a vertical second opening defined in the housing, the second opening disposed at the bottom of the housing and forming acutely angled V-shaped structure diverging away from a vertical plane from the first opening and having opposing surfaces; and a pair of immovable guide blocks, one of the guide blocks fastened to one of the surfaces of the second opening and one of the guide blocks fastened to the opposing surface, the guide blocks being configured to allow one of the lateral edges and the portion of the central door panel nearest the lateral edge to pass between them and to urge the portion of the lateral edge into the slot and first opening when the roll-up door is traveling upwardly. ### Claim 8 (depends on 7) The refeed structure of claim 7 further comprising a back portion connecting the first housing side to the second housing side to form a unitary structure. ### Claim 9 (depends on 7) The refeed structure of claim 7 further comprising guide block fasteners that fasten the guide blocks to each of the surfaces of the second opening from points outside the housing. ### Claim 10 (depends on 7) The refeed structure of claim 7 wherein an outer surface of each of the guide blocks comprises a rounded circumferential edge. ### Claim 11 (depends on 10) The refeed structure of claim 10 wherein the circumferential edge of each of the guide blocks is chamfered. ### Claim 12 (depends on 7) The refeed structure of claim 7 wherein each of the guide blocks has a low coefficient of friction such that the lateral edge of the roll-up door can glide over the guide block with virtually no drag from the guide block. ### Claim 13 A refeed structure and roll-up door assembly comprising: a pair of vertically extending and opposing wall clips, each of the wall clips being disposed to one side of a doorway and each of the wall clips comprising a face frame slide, the face frame slide extending upwardly to a first point; a rail disposed within each wall clip, the rail extending upwardly to a second point and each of the rails comprising a notch disposed at a third point; a roll-up door, the roll-up door comprising a central door panel flanked by two lateral edges; a refeed housing, the housing having a front face, a first side, a second side, and a bottom, the refeed housing being located at and extending above the third point where the notch is disposed within the rail; a substantially vertical slot defined in the housing, the slot separating the first housing side from the second housing side, the slot having a width and extending from the front face of the housing to a point in the housing and terminating at a bottom point of the housing, the vertical slot further being configured to receive one of the lateral edges and the portion of the central door panel nearest the lateral edge; a substantially vertical first opening defined in the housing, the first opening being cylindrical in shape and running vertically at the point in the housing where the slot ends and having a diameter that is greater than the width of the slot, the first opening being configured to receive one of the lateral edges of the roll-up door; a vertical second opening defined in the housing, the second opening disposed at the bottom of the housing and forming acutely angled V-shaped structure diverging away from a vertical plane from the first opening and having opposing surfaces; and a pair of immovable guide blocks disposed just above the third point where the notch is disposed within the rail, one of the guide blocks being fastened to one of the surfaces of the second opening and one of the guide blocks being fastened to the opposing surface, the guide blocks being configured to allow a lateral edge and a portion of the central door panel nearest the lateral edge to pass between them and to urge the portion of the lateral edge into the slot and first opening when the roll-up door is traveling upwardly; wherein a disengaged portion of the lateral edge of the roll-up door can be reintroduced to the rail by passing through the notch in the rail, then between the guide blocks and then back into the rail when the roll-up door is travelling upwardly. ### Claim 14 (depends on 13) The refeed structure and roll-up door assembly of claim 13 wherein the refeed structure further comprises a back portion connecting the first housing side to the second housing side to form a unitary structure. ### Claim 15 (depends on 13) The refeed structure and roll-up door assembly of claim 13 wherein the refeed structure further comprises guide block fasteners that fasten the guide blocks to each each of the surfaces of the second opening from points outside the housing. ### Claim 16 (depends on 13) The refeed structure and roll-up door assembly of claim 13 wherein an outer surface of each of the guide blocks comprises a rounded circumferential edge. ### Claim 17 (depends on 16) The refeed structure and roll-up door assembly of claim 16 wherein the circumferential edge of each of the guide blocks is chamfered. ### Claim 18 (depends on 16) The refeed structure and roll-up door assembly of claim 16 wherein each of the guide blocks has a low coefficient of friction such that the lateral edge of the roll-up door can glide over the guide block with virtually no drag from the guide block.