| 摘要 |
<p>In a window opening having frame members defining the opening and containing the marginal edges of a transparent panel and a flexible screen for covering and uncovering the panel longitudinally extending tracks extend in parallel spaced relation along at least two parallel spaced apart members of the window opening and have longitudinally extending grooves receiving guides. Seals extend longitudinally of the tracks and include substantially continuous sealing strips positioned on the outer side of the track grooves and the guides the sealing strips each having an inner marginal edge secured to the track and an outer marginal edge terminating in spaced parallel relation to the track. The guides are connected to two opposite edge portions of the screen of a spacing inwardly from the screen edges to cause the screen edges to extend outwardly past the tracks and abut the sealing strips to militate against the flow of air therethrough.</p> |
