Patent attributes
An end retention system for a rolling shutter system is provided. The end retention system comprises a fastener that has a head and a shaft, a washer and a spacer. The aperture of the washer is greater than that of the shaft. The shaft is configured for insertion into a shutter slat. A guide track is provided with retention fins spaced apart a distance that is less than the outer diameter of the washer. The guide may include a channel partially bounded by the retention fins and having a width that is greater than the outer diameter of the washer. The washer is located in the channel, and is retained near the slat by the head of and the fastener. An end retention system may have a rigid spacer, or a compressible spacer that is a resilient member located between the head of the fastener and the washer. An arrangement of rigid and compressible spacers in a curtain assembly allows the end retention systems in a curtain to have the same degree of horizontal slip, yet prevents the washers from interfering with one another when the curtain is in a rolled position.
