| 摘要 |
1,067,020. Pressure seals. G. & J. WEIR Ltd. Dec. 23, 1965 [Dec. 30, 1964], No. 52757/64. Headings F2G and F2P. Annular clearance between a first member 2 and a second member 1 passing through it is closed by means 7 which holds the second member against expulsion or withdrawal when used in conjunction with a seal comprising an annular protrusion 4 outstanding from the member 1, an endless metal seal ring 6 to abut one side of the protrusion 4 and a closure plate 8 to abut directly or -indirectly on to the seal ring 6 and the member 2. The closing means includes a second protrusion 5 which co-operates with the second seal ring 7 which is drawn tight against the edge of a hole through the plate 3 of an inner member 3 when bolts 9 passing through holes in the member 2 draw the closure plate against the seal ring 6. The seal rings are of resilient, deformable metal which can be sprung over the protrusions for assembly and the closure plate is flexible. In alternative constructions the protrusion 5 is replaced by a simple ledge or protrusion which seats below a lip or ledge without any seal ring (Fig. 2, not shown), also or seal rings may be provided additionally where the closure plate 8 contacts the member 2 (Fig. 3, not shown). |
