Fire extinguishers – Special applications – With specific extinguishant applying means – or means for...
Reexamination Certificate
2005-08-16
2005-08-16
Doerrler, William C. (Department: 3744)
Fire extinguishers
Special applications
With specific extinguishant applying means, or means for...
Reexamination Certificate
active
06929073
ABSTRACT:
A fire access port is mounted on a flammable material compartment juxtaposed with an access hole. A fire extinguisher nozzle is inserted through the fire port to suppress a fire from outside the compartment The fire port comprises a diaphragm of flexible, resilient material having a predetermined thickness extending between opposite primary and secondary surfaces. First and second transverse grooves extend across the diaphragm primary surface. The grooves have a maximum depth less than the diaphragm thickness, and a floor at the maximum depth, forming first and second frangible webs between each groove floor and the secondary surface. The frangible webs will rupture as the fire extinguisher nozzle is inserted through the diaphragm. An annular ring-like base member extends around the diaphragm. The base member extends from a proximal edge with a predetermined thickness for strength, outward to a distal edge having less thickness. A cylindrical wall extends annularly around the diaphragm for reinforcement. The diaphragm, cylindrical wall, and base member are of one-piece construction.
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Doerrler William C.
Ludy Andrew W.
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