Blind system

摘要

A blind system, including a screen with one end secured to a bar; and a guide track on opposite edges of said screen, each said guide track having a single rigid longitudinal body defining a guide channel with discrete parallel first and second channel portions; wherein, said screen has a edge portion extending through the second channel portion, a slit formed along said body, and into said first channel portion, for guiding the movement of said screen along said slit and for resisting separation of said edge portion from said first channel portion, and wherein said bar has an end portion adapted for movement only within said second channel portion for guiding said bar to move along said body.

主权项

1. A blind system, including:
a screen with opposite edge portions extending along edges of the screen and defining a screen surface plane therebetween, and one end portion secured to a bar; and a guide track on each said opposite edge portions of said screen, each said guide track having a single rigid longitudinal body forming a guide channel with discrete first and second channel portions and a slit formed along said body between the first and second channel portions; at least one of said opposite edge portions extending through the second channel portion and into said first channel portion, adapted to guide the movement of said screen along said slit and adapted to resist separation of the at least one of said opposite edge portions from said first channel portion, said bar having a guide portion at the end of the bar adapted for movement only within said second channel portion to guide said bar to move along said body, the guide portion being wider than the screen in a direction transverse to the screen surface plane, wherein the opposite edge portions are retractable and wherein each edge portion has a cross-sectional size greater than a clearance of said slit so that said edge portion resists separation of said screen from said first channel portion.