Abstract: Particular aspects of the inventive technology may, in embodiments, relate to a fluid filter apparatus that includes a filtered fluid conduit that has a length that is at least three times a characteristic diameter; and a plurality of holes, wherein at least one of said holes has a first shape and engages an end cap during fluid filter operation, and wherein at least one other of said holes has said first shape and passes filtered fluid from outside of said filtered fluid conduit to a conduit interior during fluid filter operation.
Type:
Grant
Filed:
May 3, 2011
Date of Patent:
December 31, 2013
Assignee:
Harvard Corporation
Inventors:
Otto Knottnerus, Larry Langmeier, Mark Berger
Abstract: A ceramic filter comprising: (a) from about 75% to about 95% by weight of diatomaceous earth; (b) from about 10% to about 20% by weight of a flux; and (c) from about 0.03% to about 0.4% by weight of a metallic compound; the percentages by weight being percentages by weight of the ceramic filter.
Type:
Grant
Filed:
December 12, 2008
Date of Patent:
December 17, 2013
Assignee:
Aqua-Nu Filtration
Inventors:
Patrick Farrelly, Sean McCormack, Robert Verkerk, David Maybin