Filter cartridges for liquid, and to filters fitted with such cartridges
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 9, 1995
Grant Date -
N/A
app pub date -
Jul 23, 1993
filing date -
Jul 23, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A filter cartridge for a liquid is designed to be removably received in a housing and comprises a tubular filter element of zig-zag folded paper having two ends that are secured to two respective flexible washers. The cartridge does not have any central reinforcement of its own and its washers co-operate directly for sealing purposes with appropriate annular bearing surfaces of a perforated rigid tube that is included in the housing: the cartridge is therefore easily discarded or degraded after use.
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Cited Art Landscape
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