Patent ID: 8925617
Filing Date: 2015-01-06
Classification: E06B

Abstract:
1. A rolling shutter assembly comprising: a curtain comprising a plurality of interlocking slats including a first slat and a second slat, wherein each slat comprises two ends, and each slat comprises a profile comprising a height and a width when viewed from one of the two ends; a reel connected to the curtain that is capable of winding the curtain around the reel when the curtain is not covering a building opening; a guide track that guides the curtain when the curtain is extended to cover the building opening, and which retains one slat end of each of the slats of the curtain; wherein the first slat has a first end retention device attached to a first slat end, said first end retention device designed to retain the first slat end within the guide track, and the second slat has a second end retention device attached to a second slat end, said second end retention device designed to retain the second slat end within the guide track, wherein the first and second end retention devices each comprise a shaft extending for a length from the respective first and second ends, a head at the end of the shaft, and a washer disposed around the shaft, wherein the washer is larger than the width of the profile of the respective first and second slat and is wide enough to prevent the shaft from being pulled from the guide track when the curtain is subject to a cantenary force, and wherein the first and second end retention device have a first and second spacer, respectively, disposed around the respective shaft between the washer and the head, wherein at least one of the first and second spacer is compressible, and the first and second spacer have different lengths when uncompressed such that washers of the first and second end retention devices may assume varying positions relative to one another so as not to interfere with one another when the shutter curtain is wound around the reel.