| 摘要 |
The apex end of a tape-reinforced balloon envelope is clamped between two segmented clamping rings which are mounted on a disc-shaped base member. The joint between the two segmented clamping rings is sealed by means of two resilient O-rings which function both as a gas seal and as a mechanical clamp for the reinforcing tapes and the balloon envelope. The O-rings rest in parallel grooves cut in the lower segmented ring and are compressed by matching tangs that project from the upper segmented ring. The grooves, tangs, and O-rings are dimensioned to provide the same O-ring compression factor for different thicknesses of material between the two segmented rings. The joints between the ends of the individual segments of the two clamping rings are staggered with respect to each other and each joint is sealed with a sealant or gasket material to block the escape of gas therethrough. A resilient gasket is interposed between the lower segmented clamping ring and the disc-shaped base member to which it is attached.
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