| 摘要 |
PCT No. PCT/GB90/00922 Sec. 371 Date Mar. 26, 1991 Sec. 102(e) Date Mar. 26, 1991 PCT Filed Jun. 15, 1990 PCT Pub. No. WO90/15945 PCT Pub. Date Dec. 27, 1990.An isolator including a combined blade and flap arm assembly in which two opposed side members (22) of a blade frame (31) are extended (22a) to attach to an operating shaft (21) to act as the load-bearing members of the system, the frame being completed by two opposed side members (23) oriented parallel to the shaft. Preferably insulation (37) is provided on one side only of a blade plate (33) attached in a flexible manner to a cross-sectionally generally channel-shaped blade frame by being either welded or bolted to at least one strip (34 or 34a, 34b, or 41, 42) welded to the frame. The blade designed in accordance with the present invention will accept differential expansion due to operational conditions while retaining the lightest possible construction.
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