F - Mech Eng,Light,Heat,Weapons – 16 – L
Patent
F - Mech Eng,Light,Heat,Weapons
16
L
248/17
F16L 3/16 (2006.01) H01B 17/30 (2006.01) H02G 3/22 (2006.01)
Patent
CA 1240658
ABSTRACT OF THE DISCLOSURE A feedthrough assembly for conduits basically has a wall formed with a throughgoing passage extending along an axis and having a radially inwardly directed wall surface. At least one conduit passes axially through the passage. A lining member in the passage receives at least one elastomeric adapter member having an outer surface complementarily radially outwardly engaging the wall surface and an inner surface snugly surround- ing and engaging the conduit. A tightening unit has a tighten- ing member that presses the inner and outer surfaces of the adapter member sealingly against the respective conduit and wall surface. One of the members is formed with at least one hollow chamber open radially inward at its inner surface and a mass of material generally fills the chamber. This material reacts endogenetically and emits a fire-inhibiting gas when heated substantially. The bulk of the fire-retarding material is provided in the adapter block. The chamber is formed by an axially inwardly open pocket and a plug axially inwardly closing the pocket. More particularly the block is then formed with a relatively narrow slot extending between its inner surface and the chamber. The chamber opens via the slot radially at the inner surface. The block can be formed with a plurality of such chambers and slots spaced angularly around the axis. The inner surface of the block is formed with a radially inwardly open circumferential groove crossing and interconnecting the slots.
474634
Baker Harold C.
Hauff Werner
LandOfFree
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