| 摘要 |
<p>Vessels (10), or housings, and covers therefor are detailed herein. Loads and load-bearing surfaces exist principally at the periphery of the covers (22), by contrast with centralized loadiing utilized in other designs. In some versions of the vessels (10), a cover (22) is sandwiched, at its periphery (P2), between a cap assembly (26) formed of both a jack ring (42) and an upper component or cap (38) and thus carried on and off the associated vessel (10) when the cap (38) is placed onto or removed from the vessel (10), respectively.</p> |
