| 摘要 |
The closure takes the form of a frame (16) which fits into the aperture, and on which a door structure (11) is pivotably suspended. Between the two parts of the closure is a screen sealing arrangement (14,17) extending around the frame, and comprising two magnetically attractive sealing components (14,23) borne by the frame and door respectively. Two contact surfaces (14,22) which are separable, are fitted on the frame and door respectively, and are connected or connectable to a screen (25,13) and one of the sealing components (23) is enclosed in a tubular, elastically deformable casing (22) of flexible, electrically conductive material, the outside of which forms one of the contact surfaces. The casing is movably located in a track (18) in its supporting part, and along the track, between its base and an outer surface, is a constriction (20,21). (Provisional basic advised week 89/02) |
