| 摘要 |
A bolted joint between two parts (10, 12) is strengthened by means of an annular reinforcement (20) having a sloping face (22) engaging a groove (18). Tightening of the bolt produces a compressive stress around the hole which counteracts ovalisation and fatique failure. The reinforcement can be a washer (20) as shown, or can be embodied in a bolt head, nut, rivet insert, or other item. Application of the invention to seals is also described. |
