High capacity gas filter system with indicator

Details High capacity gas filter system with indicator High capacity gas filter system with indicator

2007-04-25

2010-06-29

Hill, Jr., Robert J (Department: 1797)

Gas separation: apparatus

With signals, indicators, measuring, or testing means

C096S117000, C096S117500, C096S135000, C055SDIG034

Reexamination Certificate

active

07744684

ABSTRACT:
The present invention relates to a high capacity gas filter system. The metal filter of the system includes a visible indicator which indicates when the filter is spent. The indicator is preferably a non-reactive glass tube with indicator material therein. The glass tube can be protected to maintain gas flow integrity in case the glass tube breaks. The filter is attachable to or removable from its connecting base using a cooperating threaded knob and threaded bolt such that the filter is pulled tightly onto the base and forced off of the base depending on how the knob is rotated.

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International Search Report, Form PCT/ISA/210, 5 pages, for International Application No. PCT/US07/010135 completed on Sep. 11, 2007 and mailed Sep. 19, 2007.

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