| 摘要 |
A submersible bell having a diver's compartment in the upper region thereof, a depending conduit from the diver's compartment to provide a passage for the diver to enter and leave the diver's compartment within the bell and a spiral wall between the bell and depending conduit to provide a winding passage for purging air from the diver's compartment to the water and/or for the diver to enter and leave the diver's compartment within the bell. A submersed bell having a conduit connecting a diver's compartment with the bell and a spiral passage between the bell and the conduit, the conduit and spiral passage permitting a diver to enter and leave the diver's compartment and also purging air from the diver's compartment.
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