Patent ID: 7642473

Claim:
An explosion containment vessel which includes walls ( 34 ) forming a cavity, a switch in said cavity which can create a spark that sets off an explosion, a body that projects rearwardly from said cavity, said body having an axis and having a bore extending along said axis and having a threaded body rear portion ( 64 ), and a flat cable that projects through said body bore and that has at least one cable conductor that connects to said switch, wherein said flat cable is of non-circular cross-section, wherein: said body bore has a tapered section that is of progressively smaller diameter at progressively more forward locations; and including a tubular seal of a polymer material that deforms under high pressure, said tubular seal having a tapered seal section lying closely in said body bore tapered section and having a seal passage section that closely receives said flat cable; a threaded rear member ( 62 ) that is threadably connected to said body rear portion and that has a forwardly-facing shoulder, and a pressure coupling ( 70 ) that lies between said shoulder and a rear end of said tubular seal, so when said threaded rear member is turned to forwardly advance its shoulder, the pressure coupling presses the tapered seal section ( 84 ) forwardly to radially inwardly compress the tubular seal and tightly seal it to said flat cable and to walls of said body bore.