US PATENT SUBCLASS 376 / 292
.~.~ Concentric tubes or conduits

Current as of: June, 1999
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376 /   HD   INDUCED NUCLEAR REACTIONS: PROCESSES, SYSTEMS, AND ELEMENTS

277  DF  REACTOR PROTECTION OR DAMAGE PREVENTION {14}
287  DF  .~ Shield or barrier between radiation or heat source and object to be protected (e.g., insulation, thermal shield) {4}
292.~.~ Concentric tubes or conduits

DEFINITION

Classification: 376/292

Concentric tubes or conduits:

(under subclass 287) Subject matter wherein the means to attenuate radiation and/or egress of material includes set of nested cylinders.

(1) Note. The outer cylinder may provide an additional means to retard the egress of material within the inner cylinder.