This disclosure presents a safe high speed roll-up door with spiral brackets. To enable a high speed operation, robust spiral brackets having efficient spacing are provided to guide the plurality of sectional slats. Durable and low noise signature rollers are used. A unique assembly configuration of the slats and the tracks guiding the rollers enable quick replacement of each individual roller without disassembling the door. A double-belt counter weight mechanism balances the door and incorporates safety sensors that prevent loosening the belts when the door is jammed. The belts are further adjustable using ratchets such that adjustment for the horizontal balance as well as weight position is made effortless. In all, the high speed roll-up door using sectional slats performs faster and quieter, withstands greater loads, and lasts longer than other existing roll-up doors with spiral brackets.

A roller-shutter door system comprises a pair of opposed substantially parallel guide rails and a door formed by longitudinally hinged door slats coupled to a retraction roller. The door can be opened and closed with rotation of the retraction roller, and longitudinal ends of the door slats ride within door guide channels in the guide rails. Exterior side seals may cover a gap between the door slats and the door guide channels, and wear shields may be interposed between coated exterior surfaces of the door slats and the side seals so that the side seals bear on the wear shields instead of the coated exterior surfaces. The guide rails may have equipment channels on interior sides thereof, and radius guides may be releasably received in open superior ends of the equipment channels. The radius guides have outwardly facing guide surfaces to guide the door slats toward the retraction roller.

In example implementations, a windlock is provided. The windlock includes a body, a windlock lip, and a gusset. The body includes holes to receive a fastener to be coupled to a slat of a roll-up door. The windlock lip is formed from a portion of the body that is bent from the body. The gusset is coupled to the body and the windlock to provide mechanical strength to the windlock lip.

In example implementations, a universal endlock is provided. The universal endlock includes a body, a first side along a first edge of the body, a second side along a second edge of the body opposite the first edge, a first lip on a first end of the first side, and a second lip on a first end of the second side. The body includes an intersecting hole pattern on a center portion of the body. The first side and the second side are each bent towards a back side of the body. The first lip is bent away from a first edge of the body and the second lip is bent away from the second edge of the body.

This disclosure presents a safe high speed roll-up door with spiral brackets. To enable a high speed operation, robust spiral brackets having efficient spacing are provided to guide the plurality of sectional slats. Durable and low noise signature rollers are used. A unique assembly configuration of the slats and the tracks guiding the rollers enable quick replacement of each individual roller without disassembling the door. A double-belt counter weight mechanism balances the door and incorporates safety sensors that prevent loosening the belts when the door is jammed. The belts are further adjustable using ratchets such that adjustment for the horizontal balance as well as weight position is made effortless. In all, the high speed roll-up door using sectional slats performs faster and quieter, withstands greater loads, and lasts longer than other existing roll-up doors with spiral brackets.

A spacer device for slats of rolling shutters or rolling gates that slide in a first vertical guide and a second vertical guide opposed to one another comprises a first and a second connecting rods (2), each having at least one first slot (3, 4) connected via first pins (5) inside first seats (7) present on the opposed faces (8, 9) of a first slat (10) and connected via second pins (6) inside second seats (4) present on the opposed faces (17, 18) of a second slat (19), said first and second pins having a stem (20), which has a first end (21) that engages in first and second housings (22), present, respectively, on first and second caps (23, 24) for closing said opposed faces of said first and second slats, and a second end (25), opposite to said first end, that engages in said first and second seats (7, 16).

The invention relates to a vertically movable gate with a gate panel comprising several gate panel segments, where two adjacent gate panel segments are each hingedly connected to one another by way of at least one hinge, and with a motorized drive which transmits a force for lifting and lowering the gate panel via at least one drive means to the gate panel, and a connection means for connecting the drive means to the gate panel. Gates of the type mentioned at the outset are improved according to the invention such that, though such a gate can be moved easily between an open and a closed position largely independent of the forces arising, it nevertheless provides a compact and simultaneously stable and fail-safe design in that several gate panel segments are each individually connected to the drive means.

A closure may include a door configured to seal an opening. The door may include a section with an internal cavity. The closure may also include a core within a first portion of the internal cavity of the section. The core may be configured to expand from a relaxed state to an expanded state and provide a seal between the door and an edge of the opening when the core is in the expanded state.

A roller shutter may include a rotatable drum; a shutter curtain including a series of three or more elongate slats pivotally interlocked in a longitudinal-edge-to-longitudinal-edge arrangement and arranged parallel to the rotatable drum, wherein a first and second longitudinal end portions of each elongate slat may be respectively aligned to form a first side border and a second side border, respectively, of the shutter curtain, wherein the first and second longitudinal end portions of each elongate slat may be respectively provided with at least one eyelet-structure which protrudes therefrom, whereby a first and second rows of eyelet-structures are formed along the first and second side borders; and at least a first cord and a second cord respectively strung loosely through all eyelet-structures of respective row of eyelet-structures, and each cord may be configured to confine all eyelet-structures of the respective row of eyelet-structures within a length of each cord.

In example implementations, a universal endlock is provided. The universal endlock includes a body, a first side along a first edge of the body, a second side along a second edge of the body opposite the first edge, a first lip on a first end of the first side, and a second lip on a first end of the second side. The body includes an intersecting hole pattern on a center portion of the body. The first side and the second side are each bent towards a back side of the body. The first lip is bent away from a first edge of the body and the second lip is bent away from the second edge of the body.