The invention provides an overhead door tilt protection package comprising an enclosure secured to an overhead door, an electrical connection within the enclosure, electrical components within the enclosure including an electronic tilt detector continuously measuring the angle of door deviation between either a horizontal or a zero-set condition and a determined tilt angle of the bottom bar, producing a deviation signal, determining a stable deviation value from the deviation signal, and setting an electrical deviation condition upon the stable deviation signal reaching a predetermined level. The electrical components produce a visible door power on and door power off condition based upon tilt deviation.

The invention further provides a procedure for improving the operation and safety of overhead doors including measuring deviation of the bottom bar of a door from either horizontal or a pre-set zero condition in real time with an electronic inclinometer, restricting the deviation measurement to a single axis of deviation, averaging the real time signal, determining the average signal as below or above a preset limit and then setting a start/stop condition.

The invention provides an overhead door tilt protection package comprising an enclosure secured to an overhead door, an electrical connection within the enclosure, electrical components within the enclosure including an electronic tilt detector continuously measuring the angle of door deviation between either a horizontal or a zero-set condition and a determined tilt angle of the bottom bar, producing a deviation signal, determining a stable deviation value from the deviation signal, and setting an electrical deviation condition upon the stable deviation signal reaching a predetermined level. The electrical components produce a visible door power on and door power off condition based upon tilt deviation.

The invention further provides a procedure for improving the operation and safety of overhead doors including measuring deviation of the bottom bar of a door from either horizontal or a pre-set zero condition in real time with an electronic inclinometer, restricting the deviation measurement to a single axis of deviation, averaging the real time signal, determining the average signal as below or above a preset limit and then setting a start/stop condition.

A retractable barrier system and method for inhibiting access to designated private and public areas both indoors and outdoor, including retail and warehouse aisles and the like, includes a flexible screen retractable and extensible from a rotatable rod coupled to a mounting member, the mounting member having an attachment mechanism for coupling with a receiving member such as storage rack assembly support post or bracket or the like.

A fabric fire rated door is described. The door utilizes a fire resistant fabric curtain with an end lock attachment. A tubular steel shaft is driven by an internal tube motor. The shaft is supported to minimize deflection. Single door shafts can also be joined together with a coupler shaft to create infinitely wide doors. The coupler shaft is spring loaded to act as a take up reel for a coupling curtain which will overlap each adjacent single door shaft. All curtains are attached to the same bottom bar. A hood covers the shaft, curtain, and the supports that run across the width of the door. The curtain travels over these horizontal supports as it drops down through the hood opening. The horizontal supports keep the curtain in position for proper seal during a fire/smoke event.

A fabric fire rated door is described. The door utilizes a fire resistant fabric curtain with an end lock attachment. A tubular steel shaft is driven by an internal tube motor. The shaft is supported to minimize deflection. Single door shafts can also be joined together with a coupler shaft to create infinitely wide doors. The coupler shaft is spring loaded to act as a take up reel for a coupling curtain which will overlap each adjacent single door shaft. All curtains are attached to the same bottom bar. A hood covers the shaft, curtain, and the supports that run across the width of the door. The curtain travels over these horizontal supports as it drops down through the hood opening. The horizontal supports keep the curtain in position for proper seal during a fire/smoke event.

The disclosure discloses a return device and a windproof roller shutter formed by the return device. The return device includes an end cover, wherein a sliding chute is arranged on the end cover, the sliding chute is arranged slantly, and a horizontal height of a first end of the sliding chute is larger than a horizontal height of a second end of the sliding chute; a sliding component, wherein the sliding component moves along the sliding chute; and a fixed plate mounted at one end of a reel pipe, wherein the sliding component is mounted on the fixed plate. The windproof roller shutter includes a reel pipe, a shutter body, a low rail, two side rails and two return devices.

A method for operationally controlling a motor-driven device for driving a home automated closure or sun-shading apparatus includes at least the following steps: —measuring (E21), via a measuring device, a first value of the strength of an electrical current passing through an electric motor; —determining (E24) a difference in strength relative to the first measured strength value after a period of time starting from the moment that the first strength value is measured has elapsed; —selecting (E25) one of the first threshold strength values on the basis of the elapsed time period; —comparing (E26) the difference in strength determined relative to the selected threshold strength value; and—determining (E27) the presence or absence of an obstacle or end of travel on the basis of the result of the comparison step (E26).

A roll-up door including a flexible curtain having a front surface, a back surface, a first end coupled to a shaft, a second end opposite the first end, and first and second side edges extending between the first end and the second end, the flexible curtain being moveable between a retracted position wherein the flexible curtain is coiled around the shaft and a deployed position wherein the flexible curtain is uncoiled from the shaft. A first retention band is mounted along at least a portion of the first side edge of the flexible curtain, the first retention band including an inner surface at least partially facing towards the flexible curtain, an outer surface opposite the inner surface, a fixed edge attached to the flexible curtain generally parallel to the first side edge, and a free edge opposite the fixed edge and movable relative to the fixed edge.

A roll-up door including a flexible curtain having a front surface, a back surface, a first end coupled to a shaft, a second end opposite the first end, and first and second side edges extending between the first end and the second end, the flexible curtain being moveable between a retracted position wherein the flexible curtain is coiled around the shaft and a deployed position wherein the flexible curtain is uncoiled from the shaft. A first retention band is mounted along at least a portion of the first side edge of the flexible curtain, the first retention band including an inner surface at least partially facing towards the flexible curtain, an outer surface opposite the inner surface, a fixed edge attached to the flexible curtain generally parallel to the first side edge, and a free edge opposite the fixed edge and movable relative to the fixed edge.

A roller tube comprising a tube body which defines on its outwardly facing surface one or more blind substrate or shutter substrate receiving portions, wherein the tube body includes a plurality of sound damping elements located circumferentially around its inwardly facing surface, the sound damping elements extending longitudinally along at least part of the length of the tube body and defining a plurality of sound channels inside the tube.